3412C Marine Engine High Performance 3JK00146-UP BASIC ENGINE Caterpillar SIS

MARINE ENGINE 3412 MARINE ENGINE 3JK
3412C Marine Engine High Performance 3JK00146-UP SEBP2969 3412 3JK (1992)

Parts group 3412:

For full view, you need register

BASIC ENGINE

CAMSHAFT GP

4N-0965 CAMSHAFT GP

4N-0965 CAMSHAFT GP
S/N 3JK146-1620

CRANKSHAFT GP

4N-0922 CRANKSHAFT GP

4N-0922 CRANKSHAFT GP
S/N 3JK146-1532

4N-0922 CRANKSHAFT GP

4N-0922 CRANKSHAFT GP
S/N 3JK1533-1620

CYLINDER BLOCK GP

125-4360 COVER GP-CYLINDER BLOCK

125-4360 COVER GP-CYLINDER BLOCK
S/N 3JK421-1620

6I-2956 COVER GP-CYLINDER BLOCK

6I-2956 COVER GP-CYLINDER BLOCK
S/N 3JK146-166; 3JK172-1620

126-1372 CYLINDER BLOCK AS

126-1372 CYLINDER BLOCK AS
PART OF 126-1375 CYLINDER BLOCK AS, 126-1373 CYLINDER BLOCK GP

126-1375 CYLINDER BLOCK AS

126-1375 CYLINDER BLOCK AS
PART OF 4P-7752 CYLINDER BLOCK GP
FIELD REPLACEMENT ORDER @@@@@126-1373@@@@@, 12- 7W-4990 TUBE AS-OIL JET, 12-111-8606 BOLT-OIL JET

126-1376 CYLINDER BLOCK AS

126-1376 CYLINDER BLOCK AS
S/N 3JK585-UP
PART OF 115-2337 CYLINDER BLOCK GP
FIELD REPLACEMENT ORDER @@@@@126-1377@@@@@

126-1378 CYLINDER BLOCK AS

126-1378 CYLINDER BLOCK AS
S/N 3JK585-UP
PART OF 126-1377 CYLINDER BLOCK GP

4P-7231 CYLINDER BLOCK AS

4P-7231 CYLINDER BLOCK AS
PART OF 4P-6793 CYLINDER BLOCK GP

9Y-9164 CYLINDER BLOCK AS

9Y-9164 CYLINDER BLOCK AS
PART OF 4P-7752 CYLINDER BLOCK GP

115-2335 CYLINDER BLOCK GP

115-2335 CYLINDER BLOCK GP
S/N 3JK421-584
FIELD REPLACEMENT FOR @@@@@115-2338@@@@@

115-2336 CYLINDER BLOCK GP

115-2336 CYLINDER BLOCK GP
S/N 3JK421-584
PART OF 115-2335 CYLINDER BLOCK GP

115-2337 CYLINDER BLOCK GP

115-2337 CYLINDER BLOCK GP
S/N 3JK421-584

115-2337 CYLINDER BLOCK GP

115-2337 CYLINDER BLOCK GP
S/N 3JK585-1620

115-2338 CYLINDER BLOCK GP

115-2338 CYLINDER BLOCK GP
S/N 3JK421-584
PART OF 115-2337 CYLINDER BLOCK GP
FIELD REPLACEMENT ORDER @@@@@115-2335@@@@@

122-8609 CYLINDER BLOCK GP

122-8609 CYLINDER BLOCK GP
S/N 3JK365-487

126-1373 CYLINDER BLOCK GP

126-1373 CYLINDER BLOCK GP
FIELD REPLACEMENT FOR @@@@@126-1375@@@@@

126-1377 CYLINDER BLOCK GP

126-1377 CYLINDER BLOCK GP
S/N 3JK585-UP
FIELD REPLACEMENT FOR @@@@@126-1376@@@@@

4P-6793 CYLINDER BLOCK GP

4P-6793 CYLINDER BLOCK GP
FIELD REPLACEMENT FOR @@@@@ 4P-7752@@@@@

4P-7752 CYLINDER BLOCK GP

4P-7752 CYLINDER BLOCK GP
S/N 3JK146-364
FIELD REPLACEMENT ORDER @@@@@ 4P-6793@@@@@

4P-7752 CYLINDER BLOCK GP

4P-7752 CYLINDER BLOCK GP
S/N 3JK488-UP
FIELD REPLACEMENT ORDER @@@@@ 4P-6793@@@@@

442-5354 KIT-CYLINDER PACK

442-5354 KIT-CYLINDER PACK
S/N 3JK172-UP

CYLINDER HEAD GP

143-0046 CYLINDER HEAD AS

143-0046 CYLINDER HEAD AS
S/N 3JK146-171; 3JK1105-1620
PART OF 143-0047 CYLINDER HEAD AS
FIELD REPLACEMENT ORDER @@@@@143-0047@@@@@

143-0047 CYLINDER HEAD AS

143-0047 CYLINDER HEAD AS
S/N 3JK146-171; 3JK578-1620
PART OF 141-3228, 205-5792 CYLINDER HEAD GP
FIELD REPLACEMENT FOR @@@@@143-0046@@@@@

141-3228 CYLINDER HEAD GP

141-3228 CYLINDER HEAD GP
S/N 3JK1105-1620
PART OF 9Y-8510 CYLINDER HEAD GP

205-5792 CYLINDER HEAD GP

205-5792 CYLINDER HEAD GP
S/N 3JK146-171; 3JK578-1620
PART OF 205-5800 CYLINDER HEAD GP

205-5800 CYLINDER HEAD GP

205-5800 CYLINDER HEAD GP
S/N 3JK146-1620

9Y-8510 CYLINDER HEAD GP

9Y-8510 CYLINDER HEAD GP
S/N 3JK1105-1620

420-4888 KIT-CYLINDER HEAD GASKET

420-4888 KIT-CYLINDER HEAD GASKET
S/N 3JK172-UP
CONTAINS THE GASKETS, SEALS, & BENDABLE LOCKS TO REBUILD & REINSTALL A SINGLE CYLINDER HEAD. KIT INCLUDES THE TURBO GASKETS, BUT DOESN'T INCLUDE THE SINGLE FUEL INJECTOR SEALS. ORDER A SINGLE INJECTOR SEAL KIT, AS NEEDED. THE FOLLOWING TURBO MOUNTING HARDWARE IS INCLUDED: BOLTS, NUTS, STUDS. WASHERS, SPACER
PART OF 421-9719, 421-9726, 436-1747 KIT-ENGINE OVERHAUL
FOR USE WITH @@@@@143-3522@@@@@, @@@@@105-4833@@@@@, @@@@@105-4832@@@@@, @@@@@132-6105@@@@@, @@@@@132-6109@@@@@, @@@@@143-3523@@@@@
ALSO FIELD INSTALLATION

DAMPER GP

103-8845 DAMPER & PULLEY GP

103-8845 DAMPER & PULLEY GP
FOR USE WITH DITTA ENGINES
AN ATTACHMENT

8N-5572 DAMPER & PULLEY GP

8N-5572 DAMPER & PULLEY GP
FOR USE WITH 1000 HP CSFS MARINE ENGINES
AN ATTACHMENT

9Y-0651 DAMPER & PULLEY GP

9Y-0651 DAMPER & PULLEY GP
S/N 3JK146-1620
FOR USE WITH FIRE PUMP WITH WATER COOLED MANIFOLDS

6N-2890 GUARD GP-DAMPER

6N-2890 GUARD GP-DAMPER
FOR USE WITH ALTERNATOR OR FRONT POWER TAKE-OFF
AN ATTACHMENT

7E-3098 GUARD GP-DAMPER

7E-3098 GUARD GP-DAMPER
FOR USE WHEN NO ACCESSORIES ARE DRIVEN FROM FRONT CRANKSHAFT PULLEYS
AN ATTACHMENT

DRIVE GP-PUMP

136-9498 DRIVE GP-PUMP

136-9498 DRIVE GP-PUMP
FOR USE ON THE LH SIDE OF SAE NO. 1 FLYWHEEL HOUSING, PROVIDES DRIVE FOR SAE NO. B HYDRAULIC PUMP
FOR USE WITH CUSTOMER SUPPLIED A SIZE PUMP WITH SAE NO. 2 BOLT MOUNTING FLANGE
AN ATTACHMENT

6I-1774 DRIVE GP-PUMP

6I-1774 DRIVE GP-PUMP
PROVIDES AN AUXILIARY DRIVE FOR A HYDRAULIC PUMP MOUNTED ON THE RH REAR OF THE SAE NO. 1 FLYWHEEL HOUSING
AN ATTACHMENT

7N-2642 DRIVE GP-PUMP

7N-2642 DRIVE GP-PUMP
PROVIDES AN AUXILIARY DRIVE FOR AN SAE "B" HYDRAULIC PUMP WITH 2 BOLT MOUNTING FLANGE
FOR USAGE REFER TO CHART @@@@@ 7N-9032@@@@@
AN ATTACHMENT

7N-2645 DRIVE GP-PUMP

7N-2645 DRIVE GP-PUMP
LH AND RH REAR, MOUNTED ON LH REAR OF SAE NO. 1 FLYWHEEL HOUSING
FOR USE WITH CUSTOMER SUPPLIED "A" SIZE PUMP WITH SAE NO. 2 BOLT MOUNTING FLANGE
FOR USAGE REFER TO CHART @@@@@ 7N-9032@@@@@
AN ATTACHMENT

FLYWHEEL GP

4P-8523 FLYWHEEL GP

4P-8523 FLYWHEEL GP
S/N 3JK146-1620
FOR USE WITH SAE NO. 1 FLYWHEEL HOUSING
CANNOT BE USED WITH SAE NO. 0 FLYWHEEL HOUSING

9Y-7571 FLYWHEEL GP

9Y-7571 FLYWHEEL GP
S/N 3JK421-1620
FOR USE WITH SAE NO. 0 FLYWHEEL HOUSING

4N-3825 GEAR GP-REAR

4N-3825 GEAR GP-REAR
S/N 3JK146-1620

GEAR GP

4N-6341 GEAR GP-FRONT

4N-6341 GEAR GP-FRONT -TIMING
S/N 3JK146-1620

4N-3825 GEAR GP-REAR

4N-3825 GEAR GP-REAR
S/N 3JK146-1620

9Y-8505 HOUSING GP-FRONT

9Y-8505 HOUSING GP-FRONT
S/N 3JK146-1620

GUARD GP-BELT

1W-1630 GUARD GP-BELT

1W-1630 GUARD GP-BELT
DAMPER & ALTERNATOR
AN ATTACHMENT

6I-1846 GUARD GP-BELT

6I-1846 GUARD GP-BELT
MOUNTS TO FRONT ENGINE SUPPORT AND ALTERNATOR MOUNTING BRACKET
FOR USE WITH AN ALTERNATOR AND SEAWATER PUMP
AN ATTACHMENT

HOUSING GP-FLYWHEEL

121-2014 COVER GP-FLYWHEEL HOUSING

121-2014 COVER GP-FLYWHEEL HOUSING
S/N 3JK421-1620

4N-1902 COVER GP-FLYWHEEL HOUSING

4N-1902 COVER GP-FLYWHEEL HOUSING
S/N 3JK146-1620
FOR USE WITH SAE NO. 1 FLYWHEEL HOUSING

120-8668 HOUSING GP-FLYWHEEL

120-8668 HOUSING GP-FLYWHEEL
S/N 3JK421-1620

6I-0392 HOUSING GP-FLYWHEEL

6I-0392 HOUSING GP-FLYWHEEL
S/N 3JK146-1620

HOUSING GP-FRONT

119-0784 COVER GP-FRONT HOUSING

119-0784 COVER GP-FRONT HOUSING
S/N 3JK423-1620

9Y-6060 COVER GP-FRONT HOUSING

9Y-6060 COVER GP-FRONT HOUSING
S/N 3JK146-1620

4N-6341 GEAR GP-FRONT

4N-6341 GEAR GP-FRONT -TIMING
S/N 3JK146-1620

9Y-8505 HOUSING GP-FRONT

9Y-8505 HOUSING GP-FRONT
S/N 3JK146-1620

LIFTING GP-ENGINE

119-8202 LIFTING GP-ENGINE

119-8202 LIFTING GP-ENGINE
S/N 3JK421-1620

7E-1123 LIFTING GP-ENGINE

7E-1123 LIFTING GP-ENGINE
S/N 3JK146-1620

MOUNTING GP-ALTERNATOR

129-8138 MOUNTING GP-ALTERNATOR

129-8138 MOUNTING GP-ALTERNATOR
FOR USE WITH @@@@@116-0050@@@@@, @@@@@116-0051@@@@@
AN ATTACHMENT

6I-1866 MOUNTING GP-ALTERNATOR

6I-1866 MOUNTING GP-ALTERNATOR
REQUIRED WITH AN ALTERNATOR
FOR USE WITH SEAWATER PUMP
AN ATTACHMENT

MOUNTING GP-ENGINE

7E-0128 SUPPORT GP-ENGINE

7E-0128 SUPPORT GP-ENGINE
S/N 3JK146-1620

8N-9338 SUPPORT GP-ENGINE

8N-9338 SUPPORT GP-ENGINE -FRONT
S/N 3JK421-1620

PAN GP-OIL

6I-0391 COVER GP-OIL PAN

6I-0391 COVER GP-OIL PAN
S/N 3JK146-171; 3JK173-1620

6I-1788 COVER GP-OIL PAN

6I-1788 COVER GP-OIL PAN
S/N 3JK146-166; 3JK172-1620

127-4674 PAN GP-OIL

127-4674 PAN GP-OIL -ENGINE
S/N 3JK423-1620
FOR USE WITH SIDE ACCESS PANELS AND LEFT HAND MOUNTED OIL FILTERS

4N-2647 PAN GP-OIL

4N-2647 PAN GP-OIL -ENGINE
S/N 3JK146-1620

4N-7182 PAN GP-OIL

4N-7182 PAN GP-OIL -ENGINE
S/N 3JK421-1620

PISTON & ROD GP

442-5354 KIT-CYLINDER PACK

442-5354 KIT-CYLINDER PACK
S/N 3JK172-UP

4P-7472 PISTON & ROD GP

4P-7472 PISTON & ROD GP
S/N 3JK146-1550
14.1:1 RATIO
FOR USE WITH @@@@@442-5354@@@@@

4P-7472 PISTON & ROD GP

4P-7472 PISTON & ROD GP
S/N 3JK1551-1620
14.1:1 RATIO
FOR USE WITH @@@@@442-5354@@@@@

PULLEY GP

103-8845 DAMPER & PULLEY GP

103-8845 DAMPER & PULLEY GP
FOR USE WITH DITTA ENGINES
AN ATTACHMENT

8N-5572 DAMPER & PULLEY GP

8N-5572 DAMPER & PULLEY GP
FOR USE WITH 1000 HP CSFS MARINE ENGINES
AN ATTACHMENT

9Y-0651 DAMPER & PULLEY GP

9Y-0651 DAMPER & PULLEY GP
S/N 3JK146-1620
FOR USE WITH FIRE PUMP WITH WATER COOLED MANIFOLDS

PUMP GP-GEAR

7N-9032 CHART-HYD PUMP & LINES

7N-9032 CHART-HYD PUMP & LINES
HYDRAULIC PUMP DRIVE & OIL SUPPLY LINES
AN ATTACHMENT

SERPENTINE/V-BELTS

1W-1630 GUARD GP-BELT

1W-1630 GUARD GP-BELT
DAMPER & ALTERNATOR
AN ATTACHMENT

6I-1846 GUARD GP-BELT

6I-1846 GUARD GP-BELT
MOUNTS TO FRONT ENGINE SUPPORT AND ALTERNATOR MOUNTING BRACKET
FOR USE WITH AN ALTERNATOR AND SEAWATER PUMP
AN ATTACHMENT

VALVE MECHANISM GP

130-8214 COVER GP-VALVE MECHANISM

130-8214 COVER GP-VALVE MECHANISM
S/N 3JK515-659
FOR USE WITH OPEN FUMES DISPOSAL
ALSO AN ATTACHMENT

130-8215 COVER GP-VALVE MECHANISM

130-8215 COVER GP-VALVE MECHANISM
S/N 3JK515-593
FOR USE WITH OPEN FUMES DISPOSAL
ALSO AN ATTACHMENT

4P-9248 COVER GP-VALVE MECHANISM

4P-9248 COVER GP-VALVE MECHANISM
S/N 3JK146-166; 3JK172-1620

4P-9249 COVER GP-VALVE MECHANISM

4P-9249 COVER GP-VALVE MECHANISM
S/N 3JK146-171; 3JK173-1620

7W-5926 ROCKER ARM GP

7W-5926 ROCKER ARM GP
PART OF 4N-7352 VALVE MECHANISM GP

7W-5927 ROCKER ARM GP

7W-5927 ROCKER ARM GP
PART OF 4N-7352 VALVE MECHANISM GP

4N-7352 VALVE MECHANISM GP

4N-7352 VALVE MECHANISM GP
S/N 3JK146-879

4N-7352 VALVE MECHANISM GP

4N-7352 VALVE MECHANISM GP
S/N 3JK880-1620

COVER GP-ENGINE

420-0668 KIT-FRONT COVER GASKET

420-0668 KIT-FRONT COVER GASKET
S/N 3JK172-UP
CONTAINS GASKETS, SEALS, & BENDABLE LOCKS TO REINSTALL THE FRONT COVER. THIS KIT DOES NOT INCLUDE THE OIL PAN GASKET
PART OF 421-9719, 436-1747 KIT-ENGINE OVERHAUL
FOR USE WITH @@@@@143-3522@@@@@, @@@@@105-4833@@@@@, @@@@@105-4832@@@@@, @@@@@132-6105@@@@@, @@@@@132-6109@@@@@, @@@@@143-3523@@@@@
ALSO FIELD INSTALLATION

ENGINE OVERHAUL KIT

421-9719 KIT-ENGINE OVERHAUL

421-9719 KIT-ENGINE OVERHAUL
MAJOR OVERHAUL
FIELD REPLACEMENT ORDER @@@@@436-1747@@@@@
FOR USE WITH @@@@@143-3522@@@@@, @@@@@105-4833@@@@@, @@@@@105-4832@@@@@, @@@@@132-6105@@@@@, @@@@@132-6109@@@@@, @@@@@143-3523@@@@@, REHS7926
FIELD INSTALLATION

421-9726 KIT-ENGINE OVERHAUL

421-9726 KIT-ENGINE OVERHAUL
S/N 3JK172-UP
TOP END
FOR USE WITH @@@@@143-3522@@@@@, @@@@@105-4833@@@@@, @@@@@105-4832@@@@@, @@@@@132-6105@@@@@, @@@@@132-6109@@@@@, @@@@@143-3523@@@@@, REHS7916
ALSO FIELD INSTALLATION

436-1747 KIT-ENGINE OVERHAUL

436-1747 KIT-ENGINE OVERHAUL -MAJOR REPAIR
S/N 3JK172-UP
FIELD REPLACEMENT FOR @@@@@421-9719@@@@@
FOR USE WITH @@@@@105-4833@@@@@, @@@@@105-4832@@@@@, @@@@@132-6105@@@@@, @@@@@143-3523@@@@@, @@@@@132-6109@@@@@, @@@@@143-3522@@@@@
ALSO FIELD INSTALLATION

Information:

(For parts list, see above)

BASIC ENGINE

AIR COMPRESSOR GP

Truck Engine News

A New Special Instruction , "Troubleshooting Compressed Air System Components and Performance" Is Available {1803, 5500}
2002/09/01

Engine News

A New Diagnostic Kit for the Evaluation of Air Compressor Operation is Introduced {1803}
2004/11/01

Reworked Air Compressors Now Have "R" on the Serial Number Plate {1803, 1804}
2009/04/13

Special Instruction

Air Compressor Installation Instructions{1803}
Air Compressor Installation Instructions{1803}

Troubleshooting Compressed Air System Components and Performance{1803, 5500}
Troubleshooting Compressed Air System Components and Performance{1803, 5500}

Service Letter-NACD

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-Australia

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-CFEL

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-CSARL

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-Americas

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-Truck/Ag/Marine

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-China

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-Asia

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Letter-APD

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND RETURNING CERTAIN REMAN AIR COMPRESSORS

Service Magazine

Sleeve-Type Ring Compressors Can Be Used For Installation Of Pistons From The Bottom Of The Engine{0622}
1978/08/21

A New Special Instruction, REHS1428 , "Troubleshooting Compressed Air System Components and Performance" Is Available {1803, 5500}
2002/09/23

BELT TIGHTENER GP

Specifications

Belt Tension Chart
3408C, 3412C and 3412D High Performance Marine Engines

CAMSHAFT GP

Engine News

New 8T2998 Lubricant Available
1986/03/01

New Valve Lifter Assembly Provides Improved Lubrication Of Lifter Roller And Camshaft Lobes {1209,1210}
1994/06/01

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures
1977/05/25

Cat® Reman Has Added Valve Lifters, Rocker Arms, and Camshafts for Certain Engines and Generator Set Engines {1123, 1130, 1209, 1210}
2014/09/05

Specifications

Camshaft
3408C, 3412C and 3412D High Performance Marine Engines

Camshaft Bearings
3408C, 3412C and 3412D High Performance Marine Engines

Reuse And Salvage Guidelines

Reuse and Salvage for Camshafts {1210, 1210}
Reuse and Salvage for Camshafts {1210, 1210}

Information Release Memo

APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS

CAT REMAN ANNOUNCES ADDITIONS TO CAMSHAFT PORTFOLIOS (UPDATED COVERAGE CHART)
CAT REMAN ANNOUNCES ADDITIONS TO CAMSHAFT PORTFOLIOS (UPDATED COVERAGE CHART)

Testing and Adjusting

Excessive Bearing Wear - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Valve Lifters & Push Rods
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Camshaft
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Camshaft Bearings
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Maximum Wear Limits Established For Camshaft Roller Followers{1209}
1985/09/30

New 8T2998 Lubricant Available{0645,1210}
1986/02/17

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/16

COUPLING GP

Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}
1979/09/03

CRANKSHAFT GP

Engine News

New Bend Specification For Used Or Field Reground Crankshafts
1980/08/13

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available
1980/09/10

Use 6V6035 Hardness Tester On Crankshafts
1982/02/24

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks
1983/05/25

Crankshaft Failures
1983/11/30

Remanufactured Undersize Crankshafts Are Available
1984/04/11

Why Choose Caterpillar Remanufactured Crankshafts? Because We Offer More ...
1985/09/01

Crankshaft Seal Usage On 3400 Series Engines
1986/01/01

3400 Engine Major Component Performance Guide Available
1987/07/01

New Front Crankshaft Adapters and Wear Sleeve Used{1160}
1994/12/01

Wear Sleeve Removal Tooling May "Mark" The Crankshaft{1202,1161}
1995/08/01

Recommendations For Inspection And Replacement Of Rubber and Viscous Crankshaft Dampers{1205}
1995/09/01

Wider Crankshaft Gear Used{1204}
1999/09/01

New Front Crankshaft Seals and New Rear Crankshaft Seals are Now in Production {1160, 1161}
2003/05/01

A New Integral Seal Provides Improved Sealing {7555}
2003/12/01

A New Type of Main Bearing is Now Used {1203}
2013/03/01

The Process For Remanufacturing the Crankshaft Has Been Updated {1202}
2004/12/01

Usability of Main Bearings and Camshaft Bearings {1202, 1203, 1218, 1219}
2008/11/24

Special Instruction

Installing Crankshaft Seals And Wear Sleeves Using The Former 9S8868, 9S8873, 9S8881 And 9S8888 Tools Groups{1160, 1161, 0704}
Installing Crankshaft Seals And Wear Sleeves Using The Former 9S8868, 9S8873, 9S8881 And 9S8888 Tools Groups{1160, 1161, 0704}

Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}
Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}

Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}

Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}

Crankshaft Seal And Wear Sleeve Installation{1160, 1161}
Crankshaft Seal And Wear Sleeve Installation{1160, 1161}

Special Handling Information And Installation Instructions For Crankshaft Seal Groups That Have Hydrodynamic Grooves In The Sealing Lip{1160, 1161}
Special Handling Information And Installation Instructions For Crankshaft Seal Groups That Have Hydrodynamic Grooves In The Sealing Lip{1160, 1161}

Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}
Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}

Service Letter-NACD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Australia

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-CFEL

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-CSARL

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Americas

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Brazil

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Truck/Ag/Marine

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Specifications

Connecting Rod and Main Bearing Journals
3408C, 3412C and 3412D High Performance Marine Engines

Crankshaft
3408C, 3412C and 3412D High Performance Marine Engines

Tool Operating Manual

362-4250 Deck Height Measuring Tool{1201}
362-4250 Deck Height Measuring Tool{1201}

Service Letter-China

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Asia

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Reuse And Salvage Guidelines

Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}
Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}

Reuse and Salvage for Crankshafts {0674, 1202}
Reuse and Salvage for Crankshafts {0674, 1202}

Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}
Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}

Reuse and Salvage for Engine Dampers {1202, 1205}
Reuse and Salvage for Engine Dampers {1202, 1205}

Service Letter-APD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Testing and Adjusting

Excessive Bearing Wear - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Main Bearings - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Vibration Damper & Pulley
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Crankshaft Front Seal & Wear Sleeve
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Crankshaft Rear Seal & Wear Sleeve
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Crankshaft
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Crankshaft Main Bearings
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available{0622,1160,1161}
1980/09/01

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

Use 6V6035 Hardness Tester On Crankshafts{0651,1202}
1982/02/22

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16

Reuse Of Engine Bearings{1230}
1983/05/16

Crankshaft Failures{1202,1230}
1983/11/21

Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21

Remanufactured Undersize Crankshafts Are Available{1202}
1983/11/21

Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29

Remanufactured Crankshafts Are Available In Standard And Two Undersize Dimensions (U.S. and Canada){1202,7754}
1985/11/18

Crankshaft Seal Usage On 3400 Series Engines{1160,1161}
1985/12/16

Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08

Tools To Remove Wear Sleeves From Crankshafts{0621,7558}
1977/04/18

Tools To Install Crankshaft Seal And Wear Sleeve{1160,1161,0622}
1977/07/11

Crankshaft Support Groups Are Available To Measure Bent Crankshafts{0653,1202}
1977/11/07

Mid-Life Bearing Maintenance Recommendations {1203}
1987/09/14

Use New Main Bearings In Replacement Cylinder Blocks{1203,1201}
1978/06/12

Change In Procedure To Check Main Bearing Clearance{1203}
1978/08/28

New Centering Rings For Oversized Main Bearings{0665,1230}
1979/06/04

Connecting Rod Bearing Eliminates The Need For Mid-Life Connecting Rod Bearing Roll-In{1219,1202}
1992/08/31

Remanufactured 3412 Crankshafts {1202}
2000/01/24

40 Power Microscope is Available for Inspecting Bearing Journals on Crankshafts {0777, 1202}
2006/01/16

CYLINDER BLOCK GP

Truck Engine News

The Cylinder Liners Have a New Appearance {1216}
2005/03/01

Engine News

In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/07/09

Inspection Marks On Bearings
1982/05/12

Use FT1711 Light Table For Cylinder Liner Inspection
1982/12/15

New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip
1982/12/15

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks
1983/05/25

New Liner Seat Insert Available
1983/08/17

Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/06/01

Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/08/01

New Cylinder Liner Available
1986/02/01

3400 Engine Major Component Performance Guide Available
1987/07/01

Connecting Rod Bearing Eliminates The Need For Mid-Life Connecting Rod Bearing Roll-In
1992/08/01

Cylinder Pack Puller Groups Improved
1993/01/01

Be Sure Correct Piston Cooling Jets Are Installed{1331}
1994/12/01

Flywheel Housing To Cylinder Block Joint Improvements{1157,1201}
1997/01/22

New Block Cover Used{1201}
1999/05/01

Modification To Holder To Machine Counterbore On Cylinder Block
1977/03/15

5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster
1978/01/18

New 5P8709 Piston Tool Group For The Alignment Of Piston Cooling Jets
1978/05/03

Use New Main Bearings In Replacement Cylinder Blocks
1978/07/05

Change In Procedure To Check Main Bearing Clearance
1978/08/30

Special Instruction

Using Caterpillar Cylinder Pack Pulling Tools{1239}
Using Caterpillar Cylinder Pack Pulling Tools{1239}

Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}

Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}

Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}

Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}

Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}

Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}

Use Of 8T0455 Cylinder Liner Projection Indicator Group{0760, 1216}
Use Of 8T0455 Cylinder Liner Projection Indicator Group{0760, 1216}

Cylinder Block Cleaning Procedure{1201}
Cylinder Block Cleaning Procedure{1201}

Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}

Installation Instructions For The 160-9874 Gasket Kit {1213, 7555}
Installation Instructions For The 160-9874 Gasket Kit {1213, 7555}

Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}

Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}

Visual Inspection of Liner Seats for 3400, C15, C16, and C18 Series Engines{1200}
Visual Inspection of Liner Seats for 3400, C15, C16, and C18 Series Engines{1200}

Service Letter-NACD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Australia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-CFEL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-CSARL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Americas

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Brazil

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Truck/Ag/Marine

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Technical Information Bulletin

Liner Flange Breakage
Liner Flange Breakage

Specifications

Cylinder Liner Projection
3408C, 3412C and 3412D High Performance Marine Engines

Cylinder Block
3408C, 3412C and 3412D High Performance Marine Engines

Cylinder Liner
3408C, 3412C and 3412D High Performance Marine Engines

Tool Operating Manual

9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}
9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}

362-4250 Deck Height Measuring Tool{1201}
362-4250 Deck Height Measuring Tool{1201}

Service Letter-China

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Asia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Reuse And Salvage Guidelines

Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}

Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}

Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}
Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}

Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}

Cylinder Block Salvage Procedure Using Belzona® 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}
Cylinder Block Salvage Procedure Using Belzona® 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}

Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}
Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}

Service Letter-APD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Testing and Adjusting

Cylinder Block - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Excessive Bearing Wear - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Main Bearings - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Cylinder Liner Projection - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Spacer Plates
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Camshaft Bearings
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Cylinder Liners
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Crankshaft Main Bearings
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Piston Cooling Tubes
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}
1981/12/21

Use New Special Instruction To Install 5P6595 Insert In Cylinder Liner Seats{1216,0621}
1982/05/03

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11

Use FT1711 Light Table For Cylinder Liner Inspection {0652,1216}
1982/11/29

New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip {0653,1216,1105}
1982/11/29

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16

Reuse Of Engine Bearings{1230}
1983/05/16

New Liner Seat Insert Available{1217}
1983/08/15

Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21

New Cylinder Block Groups Used{1201}
1984/10/01

Use Care When Handling Water Seals For Cylinder Head Spacer Plates{1115}
1985/07/15

New Cylinder Liner Available{1201}
1986/02/10

Determining The Cause Of Glow Plug Tip Failures{1053,1105,1412}
1986/06/02

Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

Modification To Holder To Machine Counterbore On Cylinder Block{0664,1201}
1977/02/28

Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20

Mid-Life Bearing Maintenance Recommendations {1203}
1987/09/14

5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster{0621,1216}
1978/01/09

Use New Main Bearings In Replacement Cylinder Blocks{1203,1201}
1978/06/12

New Information On Reusable Cylinder Liners{1216}
1978/06/19

Change In Procedure To Check Main Bearing Clearance{1203}
1978/08/28

New Centering Rings For Oversized Main Bearings{0665,1230}
1979/06/04

Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27

Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Improved Head Gasket Used; Service Tips {1124,1216,1221,7568}
1990/02/26

Cylinder Pack Puller Groups Improved {0705,1239}
1993/01/18

CYLINDER HEAD GP

Engine News

Use Caution During Replacement Of Damaged Nozzle Adapters Or Precombustion Chambers
1983/01/19

Engine Valve Stem "Use Again" Specifications
1983/03/16

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures
1983/10/26

New High Alloy Material Is Used In Cylinder Head Assemblies
1984/10/24

A New Book "Analyzing Diesel And Natural Gas Engine Valve Failures" Is Available
1985/03/01

Determining The Cause Of Glow Plug Tip Failures
1986/06/01

Valve Lash Adjustment Interval Is Changed
1986/07/01

Salvage Of Cylinder Heads By Using Oversized Valve Guides And Valve Inserts
1987/04/01

Improved Head Gasket Used; Service Tips
1990/03/01

New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads
1990/10/01

Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}
1994/02/01

Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}
1994/04/18

New Intake And Exhaust Valves Used {1105,1100}
1994/06/01

New Rocker Arm Adjustment Screw Used To Adjust Valve Clearance {1123,1100}
1994/06/01

New Valve Lifter Assembly Provides Improved Lubrication Of Lifter Roller And Camshaft Lobes {1209,1210}
1994/06/01

Valve Lash Adjustment Intervals{1105}
1995/08/01

New And Reconditioned Valve Projection Specifications{1105}
1995/09/01

Be Sure To Use The Correct Inlet And Exhaust Valves In Engines Equipped With Valve Bridges That Do Not Ride On Dowels{1105,1121}
1998/03/01

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures
1977/05/25

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads
1977/06/29

Tolerance Added To Valve Clearance Specifications
1978/01/18

Use Again Specifications For Valve Springs Are Changed
1978/03/01

5P8700 Lifting Brackets Permit Cylinder Head Assembly To Be Removed And Installed
1978/07/05

Remanufactured 3412 Crankshafts {1100}
2000/01/01

Caterpillar Warranty Claims on Cylinder Head Valves {1105}
2005/10/03

Improved Cylinder Head Assemblies Are Available through Cat Reman for Certain Commercial Engines {1100}
Improved Cylinder Head Assemblies Are Available through Cat Reman for Certain Commercial Engines {1100}

A New Water Seal Assembly Is Now Used on All 3408, 3412, C27 and C32 Commercial Engines {1100, 7555}
2013/05/13

Operation and Maintenance Manual

Engine Valve Rotators - Inspect
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Engine Valve Lash - Inspect/Adjust
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Special Instruction

3400 Cylinder Head To Block Joint Repair Procedure{1124}
3400 Cylinder Head To Block Joint Repair Procedure{1124}

Use Of The 5P7333 Tool Group For Bridge Dowel Repair{1101}
Use Of The 5P7333 Tool Group For Bridge Dowel Repair{1101}

Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}
Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}

Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}

Use Of 6V4805 Valve Seat Insert Puller Group{0703}
Use Of 6V4805 Valve Seat Insert Puller Group{0703}

Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}

Use Of 6V9050 Exhaust Stud Removal Group{1100}
Use Of 6V9050 Exhaust Stud Removal Group{1100}

Determining the Cause of Fuel Dilution of Engine Oil {1101, 1124, 1251, 1280, 1290}
Determining the Cause of Fuel Dilution of Engine Oil {1101, 1124, 1251, 1280, 1290}

Service Letter-NACD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

PRODUCT SUPPORT PROGRAM FOR REPLACING FAILED CYLINDER HEADS ON CERTAIN 3412C ENGINES USED IN MARINE APPLICATIONS
PRODUCT SUPPORT PROGRAM FOR REPLACING FAILED CYLINDER HEADS ON CERTAIN 3412C ENGINES USED IN MARINE APPLICATIONS

Service Letter-Australia

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-CFEL

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-CSARL

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Americas

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Brazil

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Truck/Ag/Marine

Technical Information Bulletin

Failures of the 4W-5733 Valve Adapter and the 4W-5719 Adapter As on Certain 3408 and 3412 Engines{1100}
Failures of the 4W-5733 Valve Adapter and the 4W-5719 Adapter As on Certain 3408 and 3412 Engines{1100}

Specifications

Cylinder Head Valves
3408C, 3412C and 3412D High Performance Marine Engines

Cylinder Head
3408C, 3412C and 3412D High Performance Marine Engines

Tool Operating Manual

185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}

{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}
{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}

M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}
M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}

Service Letter-China

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Asia

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Reuse And Salvage Guidelines

Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}

Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}
Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}

Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}

Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}

Applied Failure Analysis

Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}

Information Release Memo

REMANUFACTURED 3412 CYLINDER HEAD FOR MARINE ENGINE APPLICATIONS
REMANUFACTURED 3412 CYLINDER HEAD FOR MARINE ENGINE APPLICATIONS

APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS

Service Letter-APD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Testing and Adjusting

Cylinder Head - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Engine Valve Lash - Inspect/Adjust
3408C, 3412C and 3412D High Performance Marine Engines

Fuel Injection Nozzle - Test
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Cylinder Head
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valves
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valve Guides
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Bridge Dowels
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valve Seat Inserts
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Fuel Injection Nozzles & Adapters
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Vacuum Tester Checks For Leaks Between Valve Face and Seat{0651,1103,1105}
1982/09/06

New Instruction Card Available For 6V87 Valve Stem Gauge{0653}
1982/09/06

New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip {0653,1216,1105}
1982/11/29

Engine Valve Stem "Use Again" Specifications{0653,1105}
1983/02/28

New Liner Seat Insert Available{1217}
1983/08/15

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1983/10/17

New High Alloy Material Is Used In Cylinder Head Assemblies{1101}
1984/10/15

Valve Lash Adjustment Not A Warranty Item {1102,1105}
1985/01/14

Use Care When Handling Water Seals For Cylinder Head Spacer Plates{1115}
1985/07/15

Determining The Cause Of Glow Plug Tip Failures{1053,1105,1412}
1986/06/02

Valve Lash Adjustment Interval Is Changed {1105}
1986/07/07

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/16

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads{0663,1101}
1977/06/20

Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22

Salvage Of Cylinder Heads By Using Oversized Valve Guides And Valve Inserts {1104,1103}
1987/03/30

Tolerance Added To Valve Clearance Specifications{1105,0374}
1978/01/16

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30

Use Again Specifications For Valve Springs Are Changed{1108}
1978/03/06

A New Method To Clean And Polish Engine Valve Stems{0674,1105}
1979/05/28

Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27

Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Improved Head Gasket Used; Service Tips {1124,1216,1221,7568}
1990/02/26

New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads{1105,1101}
1990/10/08

Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}
1994/02/07

Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}
1994/04/04

DAMPER GP

Engine News

New Engine Crankshaft Rubber Damper Assembly Uses Improved Rubber Material {1205}
1994/10/01

Recommendations For Inspection And Replacement Of Rubber and Viscous Crankshaft Dampers{1205}
1995/09/01

Operation and Maintenance Manual

Crankshaft Vibration Damper - Inspect
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Specifications

Vibration Damper and Pulley
3408C, 3412C and 3412D High Performance Marine Engines

Reuse And Salvage Guidelines

Reuse and Salvage for Cast Iron & Steel Pulleys and Stub Shafts {1205, 1207, 1384, 1425}
Reuse and Salvage for Cast Iron & Steel Pulleys and Stub Shafts {1205, 1207, 1384, 1425}

Reuse and Salvage for Engine Dampers {1202, 1205}
Reuse and Salvage for Engine Dampers {1202, 1205}

Disassembly and Assembly

Vibration Damper & Pulley
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Correct Torque Value For Alternator Drive Pulley Retaining Nut Is Important{1405}
1987/11/23

8T5314 Socket Adapter Available To Correctly Install Alternator Pulley Nut {0601}
1988/01/25

DRIVE GP-ACCESSORY

Engine News

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

Service Magazine

New, Tougher Gasket Used Between Block And Front Housing{1151,7555}
1985/12/09

DRIVE GP-AUXILIARY

Specifications

Auxiliary Drive Pulley
3408C, 3412C and 3412D High Performance Marine Engines

DRIVE GP-PUMP

Engine News

Jacket Water Pumps Now Include New Tapered Roller Bearings {1361}
1995/03/01

Special Instruction

Installation of Water Pump Seal Group{1361}
Installation of Water Pump Seal Group{1361}

Service Letter-NACD

Water Pumps In Parts Stock Need To Have The Coolant Seals Replaced And Certain Seals Need To Be Removed From Stock
Water Pumps In Parts Stock Need To Have The Coolant Seals Replaced And Certain Seals Need To Be Removed From Stock

Remove All 6I1775 Pump Drive Bearings With Engineering Change "0" Used On 3408 And 3412 Engines From Parts Stock
Remove All 6I1775 Pump Drive Bearings With Engineering Change "0" Used On 3408 And 3412 Engines From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Service Letter-Truck/Ag/Marine

Service Letter-China

Service Letter-Asia

Service Letter-APD

Disassembly and Assembly

Water Pump
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

New, Corrosion Resistant Water Pump Shaft Available{1389,1361}
1985/08/05

Replacement Seal Group For Water Pump Impeller Now Has All The Seal Parts Plus An Installation Tool{1361,0622}
1978/02/13

New Seal Group Used In Water Pump Groups{1361}
1993/04/12

New Cast Iron Water Pump Adapter Resistant To Erosion{1361}
1993/08/09

DRIVE GP-WATER PUMP

Special Instruction

Installation of Water Pump Seal Group{1361}
Installation of Water Pump Seal Group{1361}

Service Letter-NACD

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Service Letter-Truck/Ag/Marine

Service Letter-China

Service Letter-Asia

Service Letter-APD

Service Magazine

New, Corrosion Resistant Water Pump Shaft Available{1389,1361}
1985/08/05

Replacement Seal Group For Water Pump Impeller Now Has All The Seal Parts Plus An Installation Tool{1361,0622}
1978/02/13

New Seal Group Used In Water Pump Groups{1361}
1993/04/12

ENGINE GP

Special Instruction

Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}

Use of the 4C3502 Engine Repair Indicator Kit{0781, 1000}
Use of the 4C3502 Engine Repair Indicator Kit{0781, 1000}

Retrofit Installation of Coolant Loss Sensor{1353, 1395, 7422, 7470}
Retrofit Installation of Coolant Loss Sensor{1353, 1395, 7422, 7470}

Using The 5P6524 Engine Timing Indicator Group And 1P540 Flow Checking Tool Group{0782, 1000}
Using The 5P6524 Engine Timing Indicator Group And 1P540 Flow Checking Tool Group{0782, 1000}

Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}

Oil and Your Engine {1000}
Oil and Your Engine {1000}

Service Magazine

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

Separate Valve Stem Gauges Available{0653,1000}
1982/06/07

Analyzing A Major Engine Failure{1000}
1982/07/19

Reference Chart for Engine Improvements{0374,1000}
1982/10/25

New Index Lists Engine Special Instructions By SMCS Code{1000,0374}
1986/04/07

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts{1400,1450}
1987/03/16

Testing The Starter On The Engine{1401,1450}
1987/05/04

The Caterpillar Fuel Flow Monitor System Available {0782,1000,1250}
1987/05/11

Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25

Microfiche For Replacement Engine Bills Of Material {0374,1000}
1987/10/26

Explanation Of Nomenclature Used In Engine Performance{1000,0374}
1978/05/15

Sleeve-Type Ring Compressors Can Be Used For Installation Of Pistons From The Bottom Of The Engine{0622}
1978/08/21

Careful, Correct Installation And Maintenance Of Fuel Injection Lines Is Very Important To Prevent Possible Engine Damage, Fire And Other Problems{1252}
1979/04/23

Cranking Speeds Necessary To Start Diesel Engines{0374,1000,1450}
1979/09/24

Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}
1989/07/24

Engine Coolant Can Be Recycled{1395}
1989/11/13

Engine Storage and Engine Start-Up After Storage {1000, 1300, 1348, 7418}
Engine Storage and Engine Start-Up After Storage {1000, 1300, 1348, 7418}

FASTENER GP-ENGINE

Reuse And Salvage Guidelines

Inspection and Reuse of Critical Fasteners Used in All Engines {7553, 7553}
Inspection and Reuse of Critical Fasteners Used in All Engines {7553, 7553}

FLYWHEEL GP

Engine News

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts
1987/03/01

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

Flywheel Housing To Cylinder Block Joint Improvements{1157,1201}
1997/01/22

Service Letter-NACD

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Australia

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-CFEL

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-CSARL

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Americas

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Brazil

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Truck/Ag/Marine

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Specifications

Flywheel
3408C, 3412C and 3412D High Performance Marine Engines

Flywheel Housing
3408C, 3412C and 3412D High Performance Marine Engines

Service Letter-China

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Asia

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Reuse And Salvage Guidelines

Reuse and Salvage for Flywheel Assemblies {1156}
Reuse and Salvage for Flywheel Assemblies {1156}

Service Letter-APD

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Testing and Adjusting

Flywheel - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Flywheel
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts{1400,1450}
1987/03/16

GEAR GP

Engine News

New, Tougher Gasket Used Between Block And Front Housing
1986/01/01

New Bolts With "Lock-Patch" Used In Front Timing Gear Groups{1206}
1995/06/01

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

Wider Crankshaft Gear Used{1204}
1999/09/01

Service Letter-NACD

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Truck/Ag/Marine

Specifications

Gear Group (Rear)
3408C, 3412C and 3412D High Performance Marine Engines

Gear Group (Front)
3408C, 3412C and 3412D High Performance Marine Engines

Service Letter-China

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Service Letter-Asia

Reuse And Salvage Guidelines

Reuse and Salvage for Gear Train and Gear Shafts on Engines {0679, 1151, 1162, 1206}
Reuse and Salvage for Gear Train and Gear Shafts on Engines {0679, 1151, 1162, 1206}

Service Letter-APD

Remove All 1140966 Crank Gears From Parts Stock
Remove All 1140966 Crank Gears From Parts Stock

Disassembly and Assembly

Crankshaft Front Seal & Wear Sleeve
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Timing Gear Cover
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Timing Gears
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

New, Tougher Gasket Used Between Block And Front Housing{1151,7555}
1985/12/09

HOUSING GP-FLYWHEEL

Engine News

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

Flywheel Housing To Cylinder Block Joint Improvements{1157,1201}
1997/01/22

A New Integral Seal Provides Improved Sealing {7555}
2003/12/01

A New Integral Seal is Now Used {1157, 7555}
2009/02/16

A New Front and Rear Cover Seal Is Available for Certain 3400 Series Industrial Engines {1151, 1157, 7555}
2013/03/29

Service Letter-NACD

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Service Letter-Truck/Ag/Marine

Specifications

Flywheel Housing
3408C, 3412C and 3412D High Performance Marine Engines

Service Letter-China

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Asia

Service Letter-APD

Testing and Adjusting

Flywheel Housing - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Crankshaft Rear Seal & Wear Sleeve
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Flywheel Housing
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine{0651,0654,1250}
1982/03/22

Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11

Check 5P7435 Tee Adapter Groups In The 6V3100 Engine Timing Indicator Groups{0782}
1985/06/03

Use The 6V2034 Micrometer Adapter To Measure Lip Thickness Of Engine Valves {0653,1105}
1979/10/29

HOUSING GP-FRONT

Engine News

New, Tougher Gasket Used Between Block And Front Housing
1986/01/01

New Bolts With "Lock-Patch" Used In Front Timing Gear Groups{1206}
1995/06/01

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

A New Front and Rear Cover Seal Is Available for Certain 3400 Series Industrial Engines {1151, 1157, 7555}
2013/03/29

Specifications

Housing (Front)
3408C, 3412C and 3412D High Performance Marine Engines

Reuse And Salvage Guidelines

Thermal Spray Procedures for Engine Front Cover{0679, 1150, 1151, 1162}
Thermal Spray Procedures for Engine Front Cover{0679, 1150, 1151, 1162}

Disassembly and Assembly

Crankshaft Front Seal & Wear Sleeve
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Timing Gear Cover
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Timing Gears
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

New, Tougher Gasket Used Between Block And Front Housing{1151,7555}
1985/12/09

LIFTING GP-ENGINE

Engine News

5P8700 Lifting Brackets Permit Cylinder Head Assembly To Be Removed And Installed
1978/07/05

Operation and Maintenance Manual

Engine Lifting
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

MISCELLANEOUS INFORMATION

Engine News

Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For The Power Takeoff
1979/07/04

In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/07/09

New Bend Specification For Used Or Field Reground Crankshafts
1980/08/13

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available
1980/09/10

Use Caution During Replacement Of Damaged Nozzle Adapters Or Precombustion Chambers
1983/01/19

Crankshaft Seal Usage On 3400 Series Engines
1986/01/01

New Front Crankshaft Adapters and Wear Sleeve Used{1160}
1994/12/01

Modification To Holder To Machine Counterbore On Cylinder Block
1977/03/15

New Piston Pin Bearing Used In Connecting Rod Assembly
1977/04/22

New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines
1977/05/13

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures
1977/05/25

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads
1977/06/29

Tolerance Added To Valve Clearance Specifications
1978/01/18

5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster
1978/01/18

Use Again Specifications For Valve Springs Are Changed
1978/03/01

New 5P8709 Piston Tool Group For The Alignment Of Piston Cooling Jets
1978/05/03

Change In Procedure To Check Main Bearing Clearance
1978/08/30

Operation and Maintenance Manual

Overhaul Considerations
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Special Instruction

Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}
Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}

Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}

Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}

Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}

Cylinder Block Cleaning Procedure{1201}
Cylinder Block Cleaning Procedure{1201}

Crankshaft Seal And Wear Sleeve Installation{1160, 1161}
Crankshaft Seal And Wear Sleeve Installation{1160, 1161}

Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}
Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}

Service Letter-NACD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Australia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-CFEL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-CSARL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Americas

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Brazil

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Truck/Ag/Marine

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Tool Operating Manual

9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}
9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}

Service Letter-China

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Asia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-APD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Magazine

Connecting Rod Changes And Replacement Information{1218}
1980/03/03

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available{0622,1160,1161}
1980/09/01

Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}
1981/12/21

Piston And Connecting Rod Assembly Storage Cabinet{0600}
1982/01/18

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

Use 6V6035 Hardness Tester On Crankshafts{0651,1202}
1982/02/22

Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine{0651,0654,1250}
1982/03/22

Separate Valve Stem Gauges Available{0653,1000}
1982/06/07

Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11

Reference Chart for Engine Improvements{0374,1000}
1982/10/25

Use 6V6147 Polishing Wheel To Clean Piston Pins{0675,1214}
1982/11/08

Use the 6V6167 Contact Point to Measure Wear Steps on Piston Pins{0653}
1982/11/22

Engine Valve Stem "Use Again" Specifications{0653,1105}
1983/02/28

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16

Reuse Of Engine Bearings{1230}
1983/05/16

Parts Service Information For Pistons, Connecting Rods, Piston Pins And Rings{1214,1225,1215,1218}
1983/09/12

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1983/10/17

Crankshaft Failures{1202,1230}
1983/11/21

Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21

Remanufactured Undersize Crankshafts Are Available{1202}
1983/11/21

New Cylinder Block Groups Used{1201}
1984/10/01

Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29

Use Caterpillar 6V50 Engine Timing Indicator For Accurate Readings{0782,0785,0775}
1985/05/27

Check 5P7435 Tee Adapter Groups In The 6V3100 Engine Timing Indicator Groups{0782}
1985/06/03

Use Care When Handling Water Seals For Cylinder Head Spacer Plates{1115}
1985/07/15

Maximum Wear Limits Established For Camshaft Roller Followers{1209}
1985/09/30

Two, New Top Dead Center Magnetic Transducers Available{0651,0653,1214,1250}
1985/10/07

Two Different Piston Oil Ring Designs Used{1215}
1985/11/11

Remanufactured Crankshafts Are Available In Standard And Two Undersize Dimensions (U.S. and Canada){1202,7754}
1985/11/18

New, Tougher Gasket Used Between Block And Front Housing{1151,7555}
1985/12/09

Crankshaft Seal Usage On 3400 Series Engines{1160,1161}
1985/12/16

New Cylinder Liner Available{1201}
1986/02/10

New 8T2998 Lubricant Available{0645,1210}
1986/02/17

New Index Lists Engine Special Instructions By SMCS Code{1000,0374}
1986/04/07

Increase Piston Reuse With Keystone Piston Ring Gauge Group{1214,1215}
1986/06/16

Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08

Check Connecting Rods After Engine Failures Involving Hydraulic Lock{1218,1225}
1986/10/20

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

Modification To Holder To Machine Counterbore On Cylinder Block{0664,1201}
1977/02/28

Tools To Remove Wear Sleeves From Crankshafts{0621,7558}
1977/04/18

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads{0663,1101}
1977/06/20

Correct Adjustment Of Fuel Shut-Off Solenoid Shaft Can Prevent Failures{1259}
1977/08/08

Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22

Crankshaft Support Groups Are Available To Measure Bent Crankshafts{0653,1202}
1977/11/07

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts{1400,1450}
1987/03/16

Improved High Idle Display Of The 6V3100 And 8T5300/8T5301 Engine Timing Indicator Groups{0781}
1987/03/16

The Caterpillar Fuel Flow Monitor System Available {0782,1000,1250}
1987/05/11

Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20

Mid-Life Bearing Maintenance Recommendations {1203}
1987/09/14

Microfiche For Replacement Engine Bills Of Material {0374,1000}
1987/10/26

Correct Torque Value For Alternator Drive Pulley Retaining Nut Is Important{1405}
1987/11/23

5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster{0621,1216}
1978/01/09

Tolerance Added To Valve Clearance Specifications{1105,0374}
1978/01/16

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30

Use Again Specifications For Valve Springs Are Changed{1108}
1978/03/06

Use 6V100 Tool Arrangement To Remove And Install Piston Pin Bearings For Both Tapered And Standard Connecting Rods{0620,1218}
1978/04/24

Explanation Of Nomenclature Used In Engine Performance{1000,0374}
1978/05/15

Use New Main Bearings In Replacement Cylinder Blocks{1203,1201}
1978/06/12

Sleeve-Type Ring Compressors Can Be Used For Installation Of Pistons From The Bottom Of The Engine{0622}
1978/08/21

Change In Procedure To Check Main Bearing Clearance{1203}
1978/08/28

New 6V87 Gauge Measures Valve Stem Wear{0653,1105}
1979/01/08

Current Chart For Dynamometer Adapters{0651,1000}
1979/01/22

5P3519 Piston Ring Gauge Has Improved Design For Better Accuracy And Easier Use; Corrected Information For Use On Pistons That Have Two Ring Grooves{0653,1214}
1979/05/14

A New Method To Clean And Polish Engine Valve Stems{0674,1105}
1979/05/28

New Centering Rings For Oversized Main Bearings{0665,1230}
1979/06/04

Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27

Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}
1979/09/03

Cranking Speeds Necessary To Start Diesel Engines{0374,1000,1450}
1979/09/24

Wider Connecting Rods Have More Bearing Area{1214,1218}
1979/11/05

Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}
1989/07/24

Engine Coolant Can Be Recycled{1395}
1989/11/13

Improved Head Gasket Used; Service Tips {1124,1216,1221,7568}
1990/02/26

New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads{1105,1101}
1990/10/08

New Piston Pin Retainer Used{1225}
1991/10/14

New Seal Group Used In Water Pump Groups{1361}
1993/04/12

New Cast Iron Water Pump Adapter Resistant To Erosion{1361}
1993/08/09

MOUNTING GP-ENGINE

Engine News

Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For The Power Takeoff
1979/07/04

Operation and Maintenance Manual

Engine Mounts - Inspect
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Disassembly and Assembly

Engine Front Support
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For the Power Takeoff{1153,3055}
1979/06/25

PAN GP-OIL

Engine News

A New Integral Seal Provides Improved Sealing for Aluminum Oil Pans {1302}
2003/10/01

Special Instruction

Procedure to Install Oil Pan{1302}
Procedure to Install Oil Pan{1302}

Specifications

Engine Oil Pan
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Oil Pan
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

PARTS GP-MISCELLANEOUS

Engine News

3400 Engine Major Component Performance Guide Available
1987/07/01

Service Magazine

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

PISTON & ROD GP

Engine News

Wider Connecting Rods Have More Bearing Area
1979/10/31

Connecting Rod Changes And Replacement Information
1980/03/12

In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/07/09

Use 6V6147 Polishing Wheel To Clean Piston Pins
1982/11/10

Pistons With Thicker Top Rings Must Be Used In Correct Applications
1983/04/27

Parts Service Information For Pistons, Connecting Rods, Piston Pins And Rings
1983/09/14

Increase Piston Reuse With Keystone Piston Ring Gauge Group
1986/07/01

Check Connecting Rods After Engine Failures Involving Hydraulic Lock
1986/12/01

Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method
1987/06/01

3400 Engine Major Component Performance Guide Available
1987/07/01

Testing Connecting Rod Eye Bushings When Overhauling Engines
1987/07/01

New Piston Pin Retainer Used
1991/10/01

Connecting Rod Bearing Eliminates The Need For Mid-Life Connecting Rod Bearing Roll-In
1992/08/01

Verification of Connecting Rod Eye Bushing Retention When Overhauling Engines{1218}
1994/11/01

Be Sure Correct Piston Cooling Jets Are Installed{1331}
1994/12/01

New Oversize Connecting Rod Bearings Have Improved Design And Material
1977/04/22

New Piston Pin Bearing Used In Connecting Rod Assembly
1977/04/22

New 5P8709 Piston Tool Group For The Alignment Of Piston Cooling Jets
1978/05/03

New Guidelines for Inspecting Pistons {1214}
2006/01/02

Usability of Main Bearings and Camshaft Bearings {1202, 1203, 1218, 1219}
2008/11/24

Special Instruction

Using Caterpillar Cylinder Pack Pulling Tools{1239}
Using Caterpillar Cylinder Pack Pulling Tools{1239}

Piston Cleaning Procedure{1214}
Piston Cleaning Procedure{1214}

Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}

Using The 5P2050 Connecting Rod Checking Fixture{0767, 1218}
Using The 5P2050 Connecting Rod Checking Fixture{0767, 1218}

Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}
Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}

Service Letter-NACD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

PRODUCT SUPPORT PROGRAM TO REPLACE CYLINDER PACKS ON CERTAIN 3408C, 3412C, 3412E COMMERCIAL ENGINES; 836 AND 844 COMPACTORS; 988F AND 990 WHEEL LOADERS, 5110 EXCAVATORS; 24H MOTOR GRADERS; 631E, 633E, 637E, 651E, AND 657E SCRAPERS; 69D, 73D, 769D, 771D, 7
PRODUCT SUPPORT PROGRAM TO REPLACE CYLINDER PACKS ON CERTAIN 3408C, 3412C, 3412E COMMERCIAL ENGINES; 836 AND 844 COMPACTORS; 988F AND 990 WHEEL LOADERS, 5110 EXCAVATORS; 24H MOTOR GRADERS; 631E, 633E, 637E, 651E, AND 657E SCRAPERS; 69D, 73D, 769D, 771D, 7

Service Letter-Australia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-CFEL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-CSARL

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-Americas

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-Brazil

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-Truck/Ag/Marine

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Technical Information Bulletin

Connecting Rod Bearings
Connecting Rod Bearings

Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}
Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}

Specifications

Connecting Rod
3408C, 3412C and 3412D High Performance Marine Engines

Piston and Rings
3408C, 3412C and 3412D High Performance Marine Engines

Tool Operating Manual

NEHS1227: 477-3197 C27 Piston Ring Gauge Group {0374, 0599, 0700, 0701, 1214, 1215}
NEHS1227: 477-3197 C27 Piston Ring Gauge Group {0374, 0599, 0700, 0701, 1214, 1215}

Service Letter-China

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Service Letter-Asia

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Reuse And Salvage Guidelines

Reuse and Salvage for Connecting Rods {1218}
Reuse and Salvage for Connecting Rods {1218}

Inspection Procedures and Specifications for Pistons and Piston Pins {1214, 1214}
Inspection Procedures and Specifications for Pistons and Piston Pins {1214, 1214}

Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}
Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}

Service Letter-APD

New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock
New Piston Pin Retainers Need To Be Installed In Certain Cylinder Kits In Parts Stock

Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory
Remove All 3E6777 Seals And 5P8057 Kits From Dealer Inventory

Testing and Adjusting

Engine Crankcase Pressure (Blowby) - Test
3408C, 3412C and 3412D High Performance Marine Engines

Excessive Bearing Wear - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Connecting Rod Bearings - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Cylinder Liner Projection - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Compression - Test
3408C, 3412C and 3412D High Performance Marine Engines

Piston Ring Groove - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Pistons & Connecting Rod Assemblies
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Cylinder Liners
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Connecting Rod Bearings
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Piston Cooling Tubes
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Connecting Rod Changes And Replacement Information{1218}
1980/03/03

Piston And Connecting Rod Assembly Storage Cabinet{0600}
1982/01/18

Use New Special Instruction To Install 5P6595 Insert In Cylinder Liner Seats{1216,0621}
1982/05/03

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

New Bearing Standard: Quantity Of One Part Number Now Has Both Halves Of The Bearing{7551}
1982/08/09

Use 6V6147 Polishing Wheel To Clean Piston Pins{0675,1214}
1982/11/08

Use the 6V6167 Contact Point to Measure Wear Steps on Piston Pins{0653}
1982/11/22

Pistons With Thicker Top Rings Must Be Used In Correct Applications {1214,1215}
1983/04/18

Reuse Of Engine Bearings{1230}
1983/05/16

Parts Service Information For Pistons, Connecting Rods, Piston Pins And Rings{1214,1225,1215,1218}
1983/09/12

Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21

Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29

Two, New Top Dead Center Magnetic Transducers Available{0651,0653,1214,1250}
1985/10/07

Two Different Piston Oil Ring Designs Used{1215}
1985/11/11

Determining The Cause Of Glow Plug Tip Failures{1053,1105,1412}
1986/06/02

Increase Piston Reuse With Keystone Piston Ring Gauge Group{1214,1215}
1986/06/16

Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08

Check Connecting Rods After Engine Failures Involving Hydraulic Lock{1218,1225}
1986/10/20

New Oversize Connecting Rod Bearings Have Improved Design And Material{1219}
1977/04/25

Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method {1218,1219}
1987/06/01

Testing Connecting Rod Eye Bushings When Overhauling Engines{1218}
1987/07/06

Locating Bushings For The 5P3550 Rod Boring Machine Will Now Hold Tapered Piston Pin Bushings {0626}
1978/04/17

Use 6V100 Tool Arrangement To Remove And Install Piston Pin Bearings For Both Tapered And Standard Connecting Rods{0620,1218}
1978/04/24

Sleeve-Type Ring Compressors Can Be Used For Installation Of Pistons From The Bottom Of The Engine{0622}
1978/08/21

5P3519 Piston Ring Gauge Has Improved Design For Better Accuracy And Easier Use; Corrected Information For Use On Pistons That Have Two Ring Grooves{0653,1214}
1979/05/14

Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27

Wider Connecting Rods Have More Bearing Area{1214,1218}
1979/11/05

Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Plasma Top Piston Rings Replace Chrome Rings{1215,1214}
1989/09/11

New Piston Pin Retainer Used{1225}
1991/10/14

Connecting Rod Bearing Eliminates The Need For Mid-Life Connecting Rod Bearing Roll-In{1219,1202}
1992/08/31

Cylinder Pack Puller Groups Improved {0705,1239}
1993/01/18

Verification of Connecting Rod Eye Bushing Retention When Overhauling Engines{1218}
1994/10/31

POWER PACK GP

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}
1989/07/24

Engine Coolant Can Be Recycled{1395}
1989/11/13

POWER TAKE-OFF GP

Engine News

Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For The Power Takeoff
1979/07/04

Service Magazine

Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For the Power Takeoff{1153,3055}
1979/06/25

PULLEY GP

Engine News

8T5314 Socket Adapter Available To Correctly Install Alternator Pulley Nut
1988/01/01

Operation and Maintenance Manual

Crankshaft Vibration Damper - Inspect
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Special Instruction

Upgrading Alternators To Include An Integrated Circuit Regulator{1405, 1410}
Upgrading Alternators To Include An Integrated Circuit Regulator{1405, 1410}

Specifications

Vibration Damper and Pulley
3408C, 3412C and 3412D High Performance Marine Engines

Auxiliary Drive Pulley
3408C, 3412C and 3412D High Performance Marine Engines

Reuse And Salvage Guidelines

Reuse and Salvage for Cast Iron & Steel Pulleys and Stub Shafts {1205, 1207, 1384, 1425}
Reuse and Salvage for Cast Iron & Steel Pulleys and Stub Shafts {1205, 1207, 1384, 1425}

Disassembly and Assembly

Vibration Damper & Pulley
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

New Regulator And Field Coil Assemblies Used{1410,1405}
1981/11/23

Voltage Regulator Cross Reference Chart{1410,1405}
1985/07/01

Identification Of External Terminals On Alternators{1405,1406,1400}
1987/03/23

Alternator "R" Terminal Wire Assembly Available For Wiring Harness Repair{1408}
1987/05/04

Alternator/Generator Output Test On The Engine{1401,1404,1405,1406}
1987/05/04

Check Alternator Output Connection Prior To Machine Delivery{1405}
1987/05/18

Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25

Correct Torque Value For Alternator Drive Pulley Retaining Nut Is Important{1405}
1987/11/23

8T5314 Socket Adapter Available To Correctly Install Alternator Pulley Nut {0601}
1988/01/25

New 35-Ampere Alternator Used On Some Engines In Caterpillar Equipment{1405,1406}
1979/08/13

Voltage Regulator Can Cause Variable Ammeter Indications{1410,1401,1405,1406,7467}
1979/10/22

TOOLS

Engine News

New 6V87 Gauge Measures Valve Stem Wear
1979/01/10

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available
1980/09/10

Separate Valve Stem Gauges Available
1982/08/25

New Instruction Card Available For 6V87 Valve Stem Gauge
1982/09/22

Use FT1711 Light Table For Cylinder Liner Inspection
1982/12/15

New Service Centers For 6V3100 Engine Timing Indicator Group
1983/10/26

New Engine Timing Indicator Group Available
1986/07/01

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity
1986/11/01

Improved High Idle Display Of The 6V3100 And 8T5300/8T5301 Engine Timing Indicator Groups
1987/03/01

Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group
1987/07/01

Service Tools For Electronic Controls{0781,0782}
1994/05/01

Dynamometer Testing of Electronic Engines{1000}
1995/10/01

Special Instruction

Troubleshooting And Repair Of The 5P2160 Engine Horsepower Meter Arrangement*{0781, 0782}
Troubleshooting And Repair Of The 5P2160 Engine Horsepower Meter Arrangement^*{0781, 0782}

Using The 5P2160 Engine Horsepower Meter Arrangement*{0781, 0782}
Using The 5P2160 Engine Horsepower Meter Arrangement^*{0781, 0782}

Using The 4S6553 Engine Evaluation Test Group{0781}
Using The 4S6553 Engine Evaluation Test Group{0781}

Service Information And Use of 6V3100 Engine Timing Indicator Group{0782}
Service Information And Use of 6V3100 Engine Timing Indicator Group{0782}

Using The 6V4060 Engine Set Point Indicator Group{0781}
Using The 6V4060 Engine Set Point Indicator Group{0781}

Electronic Repair Of 6V3100 Diesel Engine Timing Indicator{0651, 1250}
Electronic Repair Of 6V3100 Diesel Engine Timing Indicator{0651, 1250}

Using Caterpillar Cylinder Pack Pulling Tools{1239}
Using Caterpillar Cylinder Pack Pulling Tools{1239}

Use of the 4C6534 Speed Switch Calibration Harness{0781, 0785}
Use of the 4C6534 Speed Switch Calibration Harness{0781, 0785}

Using the 8T8697 Electronic Control Analyzer Programmer (ECAP){0781, 0782}
Using the 8T8697 Electronic Control Analyzer Programmer (ECAP){0781, 0782}

Using the 1U5470 Engine Pressure Group{0781}
Using the 1U5470 Engine Pressure Group{0781}

Use of the 4C3502 Engine Repair Indicator Kit{0781, 1000}
Use of the 4C3502 Engine Repair Indicator Kit{0781, 1000}

Using the 4C6821 Injection Line Speed Pickup Group{0781}
Using the 4C6821 Injection Line Speed Pickup Group{0781}

Using The 5P6524 Engine Timing Indicator Group And 1P540 Flow Checking Tool Group{0782, 1000}
Using The 5P6524 Engine Timing Indicator Group And 1P540 Flow Checking Tool Group{0782, 1000}

Use Of 6V4805 Valve Seat Insert Puller Group{0703}
Use Of 6V4805 Valve Seat Insert Puller Group{0703}

Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}

Technical Information Bulletin

368-9910 Multi-Tool Group with the 368-9911 Burn Rate Group Accuracy Issue{0599, 0701, 0702, 0706, 1000, 7610, 7620}
368-9910 Multi-Tool Group with the 368-9911 Burn Rate Group Accuracy Issue{0599, 0701, 0702, 0706, 1000, 7610, 7620}

Tool Operating Manual

Using The Inspection Borescopes 1U5268 and 8T9290 Borescopes
Using The Inspection Borescopes 1U5268 and 8T9290 Borescopes

Using the 4C-8180 Timing Tool Group To Set Fuel Injection Pump Timing{0701, 0706, 1251}
Using the 4C-8180 Timing Tool Group To Set Fuel Injection Pump Timing{0701, 0706, 1251}

Using the ECAP NEXG4512 Customer Parameter Configuration Aid Service Program Module{0781, 0785}
Using the ECAP NEXG4512 Customer Parameter Configuration Aid Service Program Module{0781, 0785}

Using the 7X1400 Digital Diagnostic Tool (DDT) Group{0781, 0782}
Using the 7X1400 Digital Diagnostic Tool (DDT) Group{0781, 0782}

Using The ECAP NEXG4516 Marine/Industrial Engine Functions Service Program Module{0701, 0782}
Using The ECAP NEXG4516 Marine/Industrial Engine Functions Service Program Module{0701, 0782}

NEHS0566 4C-9832 Large Engine Roll-Over Stand {0599, 0701}
NEHS0566 4C-9832 Large Engine Roll-Over Stand {0599, 0701}

185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}

NEHS1111: 368-9910 Multi-Tool Group 3 {0599, 0701, 0702, 0706, 1000, 7610, 7620}
NEHS1111: 368-9910 Multi-Tool Group 3 {0599, 0701, 0702, 0706, 1000, 7610, 7620}

NEHS1227: 477-3197 C27 Piston Ring Gauge Group {0374, 0599, 0700, 0701, 1214, 1215}
NEHS1227: 477-3197 C27 Piston Ring Gauge Group {0374, 0599, 0700, 0701, 1214, 1215}

{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}
{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}

M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}
M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}

Reuse And Salvage Guidelines

Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}

Reuse and Salvage for Crankshafts {0674, 1202}
Reuse and Salvage for Crankshafts {0674, 1202}

Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}

Cylinder Block Salvage Procedure Using Belzona® 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}
Cylinder Block Salvage Procedure Using Belzona® 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}

Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}
Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}

Service Magazine

6V2086 And 6V2087 Seal And Wear Sleeve Installers Available{0622,1160,1161}
1980/09/01

Piston And Connecting Rod Assembly Storage Cabinet{0600}
1982/01/18

Use New Special Instruction To Install 5P6595 Insert In Cylinder Liner Seats{1216,0621}
1982/05/03

Use 6V6147 Polishing Wheel To Clean Piston Pins{0675,1214}
1982/11/08

Make Change To 6V2100 Multitach And 5P9698 Calibrator{0651}
1982/11/15

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16

Use Caterpillar 6V50 Engine Timing Indicator For Accurate Readings{0782,0785,0775}
1985/05/27

Check 5P7435 Tee Adapter Groups In The 6V3100 Engine Timing Indicator Groups{0782}
1985/06/03

New Engine Timing Indicator Group Available {0781,0782}
1986/07/07

New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27

New Special Instruction For Troubleshooting 5P2150 Engine Horsepower Meter{0651,1250}
1977/01/17

Troubleshooting The Tachometer System Of The 4S6553 Engine Instrument Group{0651}
1977/10/10

Improved High Idle Display Of The 6V3100 And 8T5300/8T5301 Engine Timing Indicator Groups{0781}
1987/03/16

Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20

Four New Contact Points Added To 5P6524 Engine Timing Indicator Group{0653}
1978/08/07

Extraction Tools For "Live Oil Sampling"{7770,0770,0781,0783,0784}
1988/04/18

Installation Of Valves For Live Oil Sampling{7770,0770,0781,0783,0784}
1988/06/06

New 6V87 Gauge Measures Valve Stem Wear{0653,1105}
1979/01/08

Current Chart For Dynamometer Adapters{0651,1000}
1979/01/22

6V117 And 6V2001 Bushings Used In 9S8140 Pressurizing Pump Group Are Available For Parts Service{0651}
1979/06/25

Cylinder Pack Puller Groups Improved {0705,1239}
1993/01/18

Service Tools For Electronic Controls {0781,0782}
1994/04/25

40 Power Microscope is Available for Inspecting Bearing Journals on Crankshafts {0777, 1202}
2006/01/16

Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {0769, 1052, 1087}
Reuse And Salvage Has Updated Air Inlet Correction Factors for Dynamometer Testing {0769, 1052, 1087}

SERPENTINE/V-BELTS

Engine News

A New Plastic Belt Guard Is Available {1357}
2001/03/01

Operation and Maintenance Manual

Alternator Belt - Inspect/Adjust/Replace
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Specifications

Belt Tension Chart
3408C, 3412C and 3412D High Performance Marine Engines

Testing and Adjusting

Belt Tension Chart
3408C, 3412C and 3412D High Performance Marine Engines

VALVE MECHANISM GP

Engine News

Use Caution During Replacement Of Damaged Nozzle Adapters Or Precombustion Chambers
1983/01/19

Engine Valve Stem "Use Again" Specifications
1983/03/16

New High Alloy Material Is Used In Cylinder Head Assemblies
1984/10/24

A New Book "Analyzing Diesel And Natural Gas Engine Valve Failures" Is Available
1985/03/01

Valve Lash Adjustment Interval Is Changed
1986/07/01

Salvage Of Cylinder Heads By Using Oversized Valve Guides And Valve Inserts
1987/04/01

Improved Head Gasket Used; Service Tips
1990/03/01

New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads
1990/10/01

Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}
1994/02/01

Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}
1994/04/18

New Rocker Arm Adjustment Screw Used To Adjust Valve Clearance {1123,1100}
1994/06/01

New Valve Lifter Assembly Provides Improved Lubrication Of Lifter Roller And Camshaft Lobes {1209,1210}
1994/06/01

Valve Lash Adjustment Intervals{1105}
1995/08/01

New And Reconditioned Valve Projection Specifications{1105}
1995/09/01

Be Sure To Use The Correct Inlet And Exhaust Valves In Engines Equipped With Valve Bridges That Do Not Ride On Dowels{1105,1121}
1998/03/01

New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines
1977/05/13

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures
1977/05/25

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads
1977/06/29

Tolerance Added To Valve Clearance Specifications
1978/01/18

Use Again Specifications For Valve Springs Are Changed
1978/03/01

5P8700 Lifting Brackets Permit Cylinder Head Assembly To Be Removed And Installed
1978/07/05

Correct Cylinder Head Options Are Now Used for Certain 3412 and 3412C Marine Engines {1102, 1121, 1123, 1209}
2010/05/31

A New Valve Lifter As is now Available on Certain 3412 Marine Engines {1102, 1121, 1123, 1209}
2011/06/08

Cat® Reman Has Added Valve Lifters, Rocker Arms, and Camshafts for Certain Engines and Generator Set Engines {1123, 1130, 1209, 1210}
2014/09/05

Operation and Maintenance Manual

Engine Valve Rotators - Inspect
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Engine Valve Lash - Inspect/Adjust
3408C, 3412, 3412C, and 3412D High Performance Marine Engines

Special Instruction

Replacement For The 2M4314 Fuel Pump Bonnet Retaining Bushing{1250}
Replacement For The 2M4314 Fuel Pump Bonnet Retaining Bushing{1250}

Use Of The 5P7333 Tool Group For Bridge Dowel Repair{1101}
Use Of The 5P7333 Tool Group For Bridge Dowel Repair{1101}

Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}
Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}

Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}

Use Of 6V4805 Valve Seat Insert Puller Group{0703}
Use Of 6V4805 Valve Seat Insert Puller Group{0703}

Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}

Use Of 6V9050 Exhaust Stud Removal Group{1100}
Use Of 6V9050 Exhaust Stud Removal Group{1100}

Service Letter-NACD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Service Letter-Truck/Ag/Marine

Technical Information Bulletin

PREMATURE INLET AND/OR EXHAUST VALVE FAILURE
PREMATURE INLET AND/OR EXHAUST VALVE FAILURE

Specifications

Valve Mechanism Cover
3408C, 3412C and 3412D High Performance Marine Engines

Valve Rocker Arms, Lifters, and Bridges
3408C, 3412C and 3412D High Performance Marine Engines

Service Letter-China

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Service Letter-Asia

Reuse And Salvage Guidelines

Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}

Information Release Memo

APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS

Service Letter-APD

Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock
Certain Remanufactured Crankshafts For Use In 3412 Engines Need To Be Removed From Parts Stock

Testing and Adjusting

Engine Valve Lash - Inspect/Adjust
3408C, 3412C and 3412D High Performance Marine Engines

Finding Top Center Position for No. 1 Piston
3408C, 3412C and 3412D High Performance Marine Engines

Disassembly and Assembly

Valve Covers
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Rocker Shaft Assembly
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valve Lifters & Push Rods
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valves
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valve Guides
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Bridge Dowels
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Valve Seat Inserts
3408 & 3412 HIGH PERFORMANCE MARINE ENGINES

Service Magazine

Engine Valve Stem "Use Again" Specifications{0653,1105}
1983/02/28

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1983/10/17

Valve Lash Adjustment Not A Warranty Item {1102,1105}
1985/01/14

Maximum Wear Limits Established For Camshaft Roller Followers{1209}
1985/09/30

Valve Lash Adjustment Interval Is Changed {1105}
1986/07/07

Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/16

5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads{0663,1101}
1977/06/20

Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22

Tolerance Added To Valve Clearance Specifications{1105,0374}
1978/01/16

Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30

Use Again Specifications For Valve Springs Are Changed{1108}
1978/03/06

A New Method To Clean And Polish Engine Valve Stems{0674,1105}
1979/05/28

Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27

Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Improved Head Gasket Used; Service Tips {1124,1216,1221,7568}
1990/02/26

New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads{1105,1101}
1990/10/08

Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}
1994/02/07

Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}
1994/04/04

HOUSING GP-REAR

Engine News

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing{1151,1157,1162}
1996/11/01

Service Letter-NACD

Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock
Remove All 7N9331, 7N9335, And 8N1911 Gaskets From Parts Stock

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Service Letter-Brazil

Service Letter-Truck/Ag/Marine

Service Letter-China

Service Letter-Asia

Service Letter-APD

Service Magazine

Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11

DRIVE GP-ALTERNATOR

Correct Torque Value For Alternator Drive Pulley Retaining Nut Is Important{1405}
1987/11/23

COVER GP-ENGINE

Reuse And Salvage Guidelines

Thermal Spray Procedures for Engine Front Cover{0679, 1150, 1151, 1162}
Thermal Spray Procedures for Engine Front Cover{0679, 1150, 1151, 1162}

ENGINE OVERHAUL KIT

Engine News

A New Improved Seal Is Now Used in the Reman Water Pumps of Certain Engines {1000, 1361, 7555}
2012/05/09

3412 Marine Engine Overhaul Kits Are Available for Top End and Major Overhauls {1000}
2012/12/10

Improved 3412 Marine Bundled Repair Solution Foundational Kits Are Available {1000}
2013/06/13

Special Instruction

421-9726 Top End Engine Overhaul Foundational Kit for 3412C Marine Engines{1000}
421-9726 Top End Engine Overhaul Foundational Kit for 3412C Marine Engines{1000}

421-9719 Major Engine Overhaul Kit for 3412C Marine Engines{1000}
421-9719 Major Engine Overhaul Kit for 3412C Marine Engines{1000}

436-1747 Major Engine Overhaul Foundational Kit for 3412C Marine Engines{1000}
436-1747 Major Engine Overhaul Foundational Kit for 3412C Marine Engines{1000}

Truck sale:

95,720

Caterpillar 3412, mobile generator sets, Construction
- mobile generator sets
FINANZAUTO S.A.

96,795

Caterpillar 3412, mobile generator sets, Construction
- mobile generator sets
FINANZAUTO S.A.

93,569

Caterpillar 3412, mobile generator sets, Construction
- mobile generator sets
FINANZAUTO S.A.

60,000

Caterpillar 3412, Stationary Generator Sets, Construction
- Stationary Generator Sets
FOLEY EQUIPMENT COMPANY

159,600

Caterpillar 3412, Stationary Generator Sets, Construction
- Stationary Generator Sets
FOLEY EQUIPMENT COMPANY