4N1201 CYLINDER BLOCK GROUP Serial No. 38S13204-Up 7N841-Page 43D 3412 ENGINE - MACHINE

BASIC ENGINE

CYLINDER BLOCK GP

0. 4N-1201 CYLINDER B
1. 1W-0173 CYLINDER B
2. 1W-0173 CYLINDER B
3. 1W-0173 CYLINDER B
4. 2W-4859 CYLINDER B
5. 7N-0841 CYLINDER B
6. 4N-6866 COVER GP-C
7. 6N-2153 CYLINDER B

CRANKSHAFT GP

8. 4N-0922 CRANKSHAFT
9. 4N-0922 CRANKSHAFT
0. INFORMATION

ENGINE - MACHINE 3412 ENGINE - MACHINE 38S
3412 INDUSTRIAL ENGINE 38S00001-13235 SEBP1101 3412 38S (2018)

BASIC ENGINE

CYLINDER BLOCK GP

4N-1201 CYLINDER BLOCK GP

1W-0173 CYLINDER BLOCK GP

#SEBP11010090

4N-1201: CYLINDER BLOCK GP

CYLINDER BLOCK GP

4N1201 CYLINDER BLOCK GROUP
Serial No. 38S13204-Up
7N841-Page 43D

c333578 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	4N-9881 C	[12]	TUBE AS.
2.	4N-1650	[4]	DOWEL
3.	7H-3171	[4]	PLUG
4.	7N-0841 Y	[1]	BLOCK AS.
5.	9F-2247	[7]	PLUG
6.	6N-9135	[2]	GASKET
7.	4N-4501	[2]	PLATE
8.	4N-0693	[3]	PLUG
9.	4N-0683	[4]	DOWEL
10.	9S-4190	[8]	PLUG
11.	3B-0645	[1]	PLUG
12.	6L-4428	[3]	STUD
13.	7M-7410	[4]	PLUG
14.	8M-8283	[4]	SEAL
15.	3S-6605	[2]	PLUG
16.	4N-9916	[12]	BOLT
17.	2M-9780	[8]	SEAL
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP11010091

1W-0173: CYLINDER BLOCK GP

CYLINDER BLOCK GP

1W0173 CYLINDER BLOCK GROUP
Serial No. 38S1 To 38S13185 Inclusive
7N0841-Page 43D

c316471 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	7M-7410	[4]	PLUG
2.	9S-4190	[8]	PLUG-0-RING
	2M-9780	[8]	SEAL-O-RING
3.	9F-2247 B	[7]	PLUG
4.	4N-1650	[4]	DOWEL
5.	6N-9135	[2]	GASKET-PLATE
6.	3S-6605	[2]	PLUG-CUP
7.	4N-4501	[2]	PLATE-BLOCK
8.	3B-0645	[1]	PLUG-CUP
9.	4N-9916	[12]	BOLT-OIL JET
10.	4N-9881	[12]	TUBE AS-OIL JET
11.	4N-0693	[3]	PLUG-TAPERLOCK
12.	7H-3171	[4]	PLUG-PIPE
13.	8M-8283	[4]	SEAL-O-RING
14.	7N-0841 CY	[1]	CYLINDER BLOCK AS
15.	4N-0683	[4]	DOWEL
	B		USE AS REQUIRED
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP11010092

1W-0173: CYLINDER BLOCK GP

CYLINDER BLOCK GP

1W0173 CYLINDER BLOCK GROUP
Serial No. 38S13186 To 38S13203 Inclusive
7N0841-Page 43D

c333110 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	7M-7410	[4]	PLUG
2.	9S-4190	[8]	PLUG-0-RING
	2M-9780	[8]	SEAL-O-RING
3.	9F-2247 B	[7]	PLUG
4.	4N-1650	[4]	DOWEL
5.	6N-9135	[2]	GASKET-PLATE
6.	3S-6605	[2]	PLUG-CUP
7.	4N-4501	[2]	PLATE-BLOCK
8.	3B-0645	[1]	PLUG-CUP
9.	4N-9916	[12]	BOLT-OIL JET
10.	7W-7496 C	[12]	TUBE AS-OIL JET
11.	4N-0693	[3]	PLUG-TAPERLOCK
12.	7H-3171	[4]	PLUG-PIPE
13.	8M-8283	[4]	SEAL-O-RING
14.	7N-0841 Y	[1]	CYLINDER BLOCK AS
15.	4N-0683	[4]	DOWEL
	B		USE AS REQUIRED
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP11010093

1W-0173: CYLINDER BLOCK GP

CYLINDER BLOCK GP

1W0173 CYLINDER BLOCK GROUP
Serial No. 38S13204-Up
7N0841-Page 43D

c333111 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	7M-7410	[4]	PLUG
2.	9S-4190	[8]	PLUG
	2M-9780	[8]	SEAL
3.	9F-2247 B	[7]	PLUG
4.	4N-1650	[4]	DOWEL
5.	6N-9135	[2]	GASKET
6.	3S-6605	[2]	PLUG
7.	4N-4501	[2]	PLATE
8.	3B-0645	[1]	PLUG
9.	4N-9916	[12]	BOLT
10.	4N-9881 C	[12]	TUBE AS.
11.	4N-0693	[3]	PLUG
12.	7H-3171	[4]	PLUG
13.	8M-8283	[4]	SEAL
14.	7N-0841 Y	[1]	BLOCK AS.
			(Separate Illustration)
15.	4N-0683	[4]	DOWEL
	B		USE AS REQUIRED
	Y		SEPARATE ILLUSTRATION
	C		INDICATES CHANGE

#SEBP11010094

2W-4859: CYLINDER BLOCK GP

CYLINDER BLOCK GP

2W4859 CYLINDER BLOCK GROUP
Serial No. 38S6007-Up
Provides Field Replacement for 7N841 shown on Page 43D

c316601 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	7M-7410	[4]	PLUG
2.	9S-4190	[8]	PLUG
	2M-9780	[8]	SEAL
3.	9F-2247 B	[6]	PLUG
4.	3J-5389 B	[2]	PLUG
5.	4N-6658	[2]	BEARING
6.	3S-6605	[2]	PLUG
7.	4N-0685	[5]	BEARING
8.	3B-0645	[1]	PLUG
9.	4N-9916	[12]	BOLT
10.	4N-9881	[12]	TUBE AS.
11.	4N-0693	[3]	PLUG
12.	7H-3171	[4]	PLUG
13.	4N-0614	[7]	CAP
14.	3P-1323	[14]	BOLT
	9H-1031	[14]	WASHER
	B		USE AS REQUIRED

#SEBP11010095

7N-0841: CYLINDER BLOCK AS

CYLINDER BLOCK AS

7N841 CYLINDER BLOCK ASSEMBLY
Engine Serial No. 38S6007-Up. Part of 4N1201 & 1W173 Cylinder Blocks
For Field Replacement order 2W4859 on Page 43B

c316419 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	6V-5121	[36]	SEAL
2.	1W-6280	[12]	LINER
3.	9L-5854	[12]	BAND
4.	3P-1323	[14]	BOLT
	9H-1031	[14]	WASHER
5.	4N-0614	[7]	CAP
6.	7N-0843	[1]	BLOCK
7.	4N-6658	[2]	BEARING
8.	3J-5389	[2]	PLUG
9.	4N-0685	[5]	BEARING
	4W-4588 AFJ		SLEEVE (LIFTER BORE)
	4W-6061 AF		SLEEVE (BOTTOM LINER)
			FOR SALVAGE OF THE BOTTOM LINER O-RING BORE- QTY TO BE DETERMINED BY USER
	2W-3815 AFJ		INSERT (LINER SEAT) 1.59MM(.06IN)THK
			-OR-
	5N-0093 AFJ		INSERT (LINER SEAT) 2.7MM(.11IN)THK
	A		NOT PART OF THIS GROUP
	F		NOT SHOWN
	J		(FOR SALVAGE OF DAMAGED LIFTER BORES IN CYLINDER BLOCK-QTY. TO B

#SEBP11010096

4N-6866: COVER GP-CYLINDER BLOCK

COVER GP-CYLINDER BLOCK

4N6866 CYLINDER BLOCK COVER GROUP
For Precombustion Chambered Turbocharged Aftercooled Engine

c208528 SEBP1101

4N6866 COVER GP-CYLINDER BLOCK Parts scheme

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	0S-1594 CB	[11]	BOLT
2.	4N-1683	[1]	COVER
	4N-1684	[1]	GASKET
3.	2P-2772 B	[1]	COVER
	4N-0933 B	[1]	GASKET
4.	4N-1682	[1]	COVER
	4N-0864	[1]	GASKET
5.	4N-0794 B	[1]	COVER
	4N-0790 B	[1]	GASKET
6.	0L-1351 C	[2]	BOLT
7.	5M-2894	[13]	WASHER
	B		USE AS REQUIRED
	C		CHANGE FROM PREVIOUS TYPE

#SEBP11010097

6N-2153: CYLINDER BLOCK GROUP

CYLINDER BLOCK GROUP

6N2153 CYLINDER BLOCK GROUP
Part of 4N1201 Cylinder Block Group shown on Page 43

c221679 SEBP1101

6N2153 CYLINDER BLOCK GROUP Parts scheme

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	7M-7410	[4]	PLUG
2.	9S-4190	[8]	PLUG
	2M-9780	[8]	SEAL
3.	9F-2247 C	[7]	PLUG (use as required)
4.	3J-5389	[2]	PLUG (use as required)
5.	4N-6658	[2]	BEARING
6.	3S-6605	[2]	PLUG
7.	4N-0685	[5]	BEARING
8.	3B-0645	[1]	PLUG
9.	4N-9916	[12]	BOLT
10.	4N-9881	[12]	TUBE ASSEM.
11.	4N-0693	[3]	PLUG
12.	7H-3171	[4]	PLUG
13.	4N-5858 C	[7]	CAP
14.	3P-1323	[14]	BOLT
	9H-1031	[14]	WASHER
	C		INDICATES CHANGE

#SEBP11010098

4N-0922: CRANKSHAFT GP

CRANKSHAFT GP

4N0922 CRANKSHAFT GROUP
Serial No. 38S1 To 38S12878 Inclusive

c231303 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	4N-7755 R	[1]	CRANKSHAFT ASSEM.
			(Includes)
2.	4N-0684	[1]	PIN
3.	7N-7591 C	[1]	GEAR (80 teeth)
4.	9F-2247	[6]	PLUG
5.	7S-5005	[1]	DOWEL
6.	7N-8947 C	[2]	PLATE
7.	7N-1999 C	[2]	SEAL GROUP
8.	8N-5421 C	[7]	BEARING
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

#SEBP11010099

4N-0922: CRANKSHAFT GP

CRANKSHAFT GP

4N0922 CRANKSHAFT GROUP
Serial No. 38S12879 To 38S13202 Inclusive

c322287 SEBP1101

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Parts for your 3412 ENGINE - MACHINE:

Pos.	Part No	Qty	Parts name
1.	1W-6213 RC	[1]	CRANKSHAFT AS.
2.	4N-0684	[1]	PIN
3.	7N-7591	[1]	GEAR (80 TEETH)
4.	9F-2247	[6]	PLUG
5.	7S-5005	[1]	DOWEL
6.	1W-5252 C	[2]	PLATE
7.	2W-1733 C	[1]	SEAL GROUP
8.	4W-5492 C	[7]	BEARING (MAIN)
9.	2W-1734 C	[1]	SEAL GROUP
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

Information:

BASIC ENGINE

CYLINDER BLOCK GP

Truck Engine News

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

Engine News

Improved Gasket Now Used Between The Flywheel Housing And The Cylinder Block
1979/05/09

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

New Connecting Rod And Main Bearings Have A Thicker Coating (Layer) Of Lead-Tin Overlay
1981/01/21

Remove Piston Cooling Tubes Before Removal Of Pistons And Connecting Rods
1981/07/15

Check Bottom Surface Of Cylinder Liner Flange For Erosion And Wear
1981/11/25

New Cylinder Liners And O-Ring Seals Give Longer Seal Life
1981/12/16

Carbon Build-Up In Combustion And Inlet Areas
1982/04/07

Use Correct Part Numbers For Main And Connecting Rod Bearings
1982/05/12

New Crankshaft Main Bearings Used
1982/05/12

Inspection Marks On Bearings
1982/05/12

New Head Gasket Improves Seal Between Block And Liner Flange
1982/10/20

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

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

6V4869 Adapter And 6V6174 Plug Can Be Used To Install Camshaft Bearings
1982/12/15

Dimensions For Reconditioning Cylinder Blocks, Cylinder Heads
1983/01/19

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

Damaged Lifter Bores In 3400 Series Engines Can Be Used Again
1983/07/06

New Liner Seat Insert Available
1983/08/17

New Connecting Rod And Main Bearings Used
1983/11/30

Dimensions For Reconditioning Cylinder Blocks, Cylinder Heads
1984/05/16

New Recommendation For Oil Hole Location During Installation Of Camshaft Bearings
1984/05/16

New Cylinder Block Groups Used
1984/10/03

Install Crankshaft Thrust Bearings Correctly To Avoid Damage
1985/02/01

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

Main And Connecting Rod Bearing Part Numbers
1987/01/01

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

Mid-Life Bearing Maintenance Recommendations
1987/09/01

New Piston Cooling Jets Used
1987/09/01

New Liner Seat Insert Available
1988/12/01

New Bronze Thrust Plate Used On Center Main Bearing Of Crankshaft Groups
1990/12/01

Service Tips For Piston Cooling Jets (Tubes)
1990/12/01

Thinner Spacer Plates Available For Parts Service
1992/06/01

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

New Liner Seat Inserts Available
1992/11/01

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

New Cylinder Liners
1977/01/28

Improved Main And Connecting Rod Bearings Have Aluminum Alloy With More Strength
1977/01/28

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

Clean Bolt Holes In Cylinder Block Before Cylinder Heads Are Installed
1977/07/13

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

External (Outside) Oil Lines Now Used Instead Of The Oil Passage In The Cylinder Block And Flywheel Housing
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

The Cylinder Liners Have a New Appearance {1216}
2005/03/14

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}

Installation Of 2W3815 Or 5N93 Inserts{1217}
Installation Of 2W3815 Or 5N93 Inserts{1217}

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 <NOBR> 6V-7840</NOBR> 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

Damaged Liner Seals on 3400 Reman Cylinder Packs {1201, 1216, 1239}
Damaged Liner Seals on 3400 Reman Cylinder Packs {1201, 1216, 1239}

Specifications

Cylinder Block
3408C & 3412C INDUSTRIAL ENGINES

Cylinder Liners
3408C & 3412C INDUSTRIAL ENGINES

Cylinder Liner Projection
3408C & 3412C INDUSTRIAL ENGINES

Connecting Rod And Main Bearing Journals
3408C & 3412C INDUSTRIAL ENGINES

Cylinder Block
3412 INDUSTRIAL AND MARINE ENGINES

Cylinder Liners
3412 INDUSTRIAL AND MARINE ENGINES

Cylinder Liner Projection
3412 INDUSTRIAL AND MARINE ENGINES

Connecting Rod And Main Bearing Journals
3412 INDUSTRIAL AND 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}

Setup and Operation of the 368-8645 Tool Kit (CRANKCASE PRESSURE){1317}
Setup and Operation of the 368-8645 Tool Kit (CRANKCASE PRESSURE){1317}

Using the 8T-2700 Blowby/Air Flow Indicator{0781, 0785, 1317}
Using the 8T-2700 Blowby/Air Flow Indicator{0781, 0785, 1317}

420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}
420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}

Using the 242-3980 Piston Groove Gauge on 3500A and B Engines with Monotherm Pistons using the 329-2630 and 329-2631 Piston Groove Gauges on 3500B Engines with Monotherm Pistons{0374, 0599, 0700, 0701, 0705}
Using the 242-3980 Piston Groove Gauge on 3500A and B Engines with Monotherm Pistons using the 329-2630 and 329-2631 Piston Groove Gauges on 3500B Engines with Monotherm Pistons{0374, 0599, 0700, 0701, 0705}

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}

Reuse and Salvage for 3200 Engine Cylinder Blocks {1201}
Reuse and Salvage for 3200 Engine Cylinder Blocks {1201}

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}

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 <NOBR> 6V-7840</NOBR> 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}

Information Release Memo

PRODUCT LINE ADDITIONS: REMANUFACTURED SHORT AND LONG BLOCKS FOR VARIOUS APPLICATIONS
PRODUCT LINE ADDITIONS: REMANUFACTURED SHORT AND LONG BLOCKS FOR VARIOUS APPLICATIONS

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

Disassembly and Assembly

Valve Seat Inserts
3408C & 3412C INDUSTRIAL ENGINES

Spacer Plates
3408C & 3412C INDUSTRIAL ENGINES

Camshaft Bearings
3408C & 3412C INDUSTRIAL ENGINES

Cylinder Liners
3408C & 3412C INDUSTRIAL ENGINES

Crankshaft Main Bearings
3408C & 3412C INDUSTRIAL ENGINES

Piston Cooling Tubes
3408C & 3412C INDUSTRIAL ENGINES

Camshaft Bearings
3412 INDUSTRIAL & MARINE ENGINES

Valve Seat Inserts
3412 INDUSTRIAL & MARINE ENGINES

Spacer Plates
3412 INDUSTRIAL & MARINE ENGINES

Piston Cooling Tubes
3412 INDUSTRIAL & MARINE ENGINES

Cylinder Liners
3412 INDUSTRIAL & MARINE ENGINES

Crankshaft Main Bearings
3412 INDUSTRIAL & MARINE ENGINES

Service Magazine

New Connecting Rod And Main Bearings Have A Thicker Coating (Layer) Of Lead-Tin Overlay{1230,1219,1203}
1981/01/19

Crankshaft Failures; New Thrust Plate{1203,1202,1230}
1981/05/04

Remove Piston Cooling Tubes Before Removal Of Pistons And Connecting Rods{1214,1218,1201,1225,1307}
1981/07/13

Check Bottom Surface Of Cylinder Liner Flange For Erosion And Wear{1216,1201}
1981/11/16

New Cylinder Liners And O-Ring Seals Give Longer Seal Life{1216,1201,1213,1227}
1981/12/14

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

Use Correct Part Numbers For Main And Connecting Rod Bearings{1230,1203,1219}
1982/04/12

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 Crankshaft Main Bearings Used{1203}
1982/05/10

New Head Gasket Improves Seal Between Block And Liner Flange{1101,1201}
1982/09/27

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

6V4869 Adapter And 6V6174 Plug Can Be Used To Install Camshaft Bearings{1211,0621}
1982/11/22

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

Dimensions For Reconditioning Cylinder Blocks, Cylinder Heads{1201,1101,1103,1105}
1982/12/20

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

Damaged Lifter Bores In 3400 Series Engines Can Be Used Again{1201,0374}
1983/07/04

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

New Connecting Rod And Main Bearings Used{1203,1219,1226,1227,1230}
1983/10/10

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

Dimensions For Reconditioning Cylinder Blocks, Cylinder Heads{1201,1101,1103,1105}
1984/04/23

New Recommendation For Oil Hole Location During Installation Of Camshaft Bearings{1211}
1984/05/07

Salvaging Cylinder Block Top Decks After Liner Seat Erosion{1201,1216,1217}
1984/06/04

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

Install Crankshaft Thrust Bearings Correctly To Avoid Damage{1202,1203}
1985/02/11

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

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

Service Reminders For 3400 Family Of Diesel Engines{1204,1214,1331}
1986/05/05

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

Indications Of Engine Overspeeding When Only One Cam Lobe/Lifter Has Failed{1000,1100,1200}
1986/09/08

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

New Cylinder Liners{1216}
1977/01/24

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

Use New Procedure To Tighten Flywheel Housing Bolts{1157,1201}
1977/07/04

Clean Bolt Holes In Cylinder Block Before Cylinder Heads Are Installed{1101,1201}
1977/08/08

Replacement Bearings Have Aluminum Alloy With More Strength{1203,1213,1230}
1977/10/24

Main And Connecting Rod Bearing Part Numbers {1203,1219,1230}
1987/01/26

Stronger Timing Gear Housing; Additional Stud Used At Top Of Housing{1151,1201}
1987/02/23

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

Recommendations For Preventing Cooling System Damage {1201}
1987/08/31

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

New Piston Cooling Jets Used {1213,1214}
1987/09/14

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

External (Outside) Oil Lines Now Used Instead Of The Oil Passage In The Cylinder Block And Flywheel Housing{1307}
1978/05/01

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

Head Bolt Holes In Cylinder Blocks Can Be Repaired{1201,1101}
1988/10/24

New Liner Seat Insert Available{1201,1216,1217}
1988/11/14

Improved Gasket Now Used Between The Flywheel Housing And The Cylinder Block{1157,1201}
1979/04/30

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

New Design Thrust Plate Used In Crankshaft Group{1201,1202,1203}
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

Dimensions For Aluminum Washer{1221}
1990/07/23

Service Tips For Piston Cooling Jets (Tubes){1331}
1990/11/26

Remanufactured Camshafts And Cam Kits Available For Parts Service{1210,1211,1212}
1990/12/17

New Bronze Thrust Plate Used On Center Main Bearing Of Crankshaft Groups{1203}
1990/12/17

Checking Crankshaft Journal Surface Hardness On Remanufactured Crankshafts{1202}
1991/01/07

No Gaskets Used With Aluminum Flywheel Housings{1157}
1991/10/14

Thinner Spacer Plates Available For Parts Service{1221}
1992/06/29

New Liner Seat Inserts Available{1217}
1992/11/09

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

New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence; Improved Coolant Flow (Cylinder Heads) {1124,1221,1216,1101}
1994/07/04

Procedure For Installing Steel Core Gasket At The Front Housing And The Flywheel Housing {1151,1157,1162}
1996/11/25

Damaged Lifter Bores In 3400 Series Engines Can Be Used Again {1201}
2005/01/24

The Cylinder Liners Have a New Appearance {1216}
2005/03/14

Caterpillar Parts SIS Catalog 3412 :

4N-1201 CYLINDER BLOCK GP

4N-1960 COVER GP-CYLINDER BLOCK

FIRE PUMP ENGINE

1W-0173 CYLINDER BLOCK GP

2W-4859 CYLINDER BLOCK GP

7N-0841 CYLINDER BLOCK AS

4N-6866 COVER GP-CYLINDER BLOCK

6N-2153 CYLINDER BLOCK GROUP

4N-0922 CRANKSHAFT GP

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

4N1201 CYLINDER BLOCK GROUP Serial No. 38S13204-Up 7N841-Page 43D 3412 ENGINE - MACHINE

BASIC ENGINE

4N-1201: CYLINDER BLOCK GP

Parts for your 3412 ENGINE - MACHINE:

1W-0173: CYLINDER BLOCK GP

Parts for your 3412 ENGINE - MACHINE:

1W-0173: CYLINDER BLOCK GP

Parts for your 3412 ENGINE - MACHINE:

1W-0173: CYLINDER BLOCK GP

Parts for your 3412 ENGINE - MACHINE:

2W-4859: CYLINDER BLOCK GP

Parts for your 3412 ENGINE - MACHINE:

7N-0841: CYLINDER BLOCK AS

Parts for your 3412 ENGINE - MACHINE:

4N-6866: COVER GP-CYLINDER BLOCK

Parts for your 3412 ENGINE - MACHINE:

6N-2153: CYLINDER BLOCK GROUP

Parts for your 3412 ENGINE - MACHINE:

4N-0922: CRANKSHAFT GP

Parts for your 3412 ENGINE - MACHINE:

4N-0922: CRANKSHAFT GP

Parts for your 3412 ENGINE - MACHINE:

Information:

Caterpillar Parts SIS Catalog 3412 :

Truck sale:

Modal