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3N2679 CYLINDER BLOCK AND COVERS GROUP--Front View Part 2 of 2 Serial No. 49C527-Up Part of 3N1197, 3N3373, 3N3340 and 3N3374 Engine Arrangements listed on Pages 8 through 11 G399


BASIC ENGINE
CYLINDER BLOCK GP
CRANKSHAFT GP

GAS ENGINE G399 GAS ENGINE 49C
 G399 ENGINE 49C00261-UP UEG0605S G399 49C   (1968)

BASIC ENGINE

CYLINDER BLOCK GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
 

#UEG0605S0110
 

3N-2679: CYLINDER BLOCK & COVERS GP

3N2679 CYLINDER BLOCK AND COVERS GROUP--Front View Part 2 of 2
Serial No. 49C527-Up
Part of 3N1197, 3N3373, 3N3340 and 3N3374 Engine Arrangements listed on Pages 8 through 11
c229399 UEG0605S
3N2679 CYLINDER BLOCK & COVERS GP Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  8N-4708 C [16] BAND  
  1A-1135 [4] BOLT  
  2A-4462 [2] LOCK  
  6L-8989 [1] COVER  
  1F-4419 [1] GASKET  
  0S-0509 [81] BOLT (.75" LONG)  
  3B-4506 [81] LOCKWASHER  
  6L-7815 [48] SEAL  
  8N-9174 C [16] LINER  
  1A-9759 [8] DOWEL  
  2N-4518 [1] PLATE ASSEM.  
  8F-8145 C [1] FLANGE  
  1F-3131 [1] GASKET  
  1B-5174 [1] PLUG  
  0S-1588 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
  1F-4418 [8] COVER  
  1F-9223 [8] GASKET  
  5F-0304 [1] PLUG  
  5B-8932 [1] GASKET  
  0S-0509 C [116] BOLT  
  3B-4506 C [116] LOCKWASHER  
  6L-2787 [1] HOUSING  
    (FLYWHEEL)
  C   INDICATES CHANGE
 

#UEG0605S0111
 

6L-8357: CRANKSHAFT GP

6L8357 CRANKSHAFT GROUP
Serial No. 49C261 to 49C407 inclusive. Part of 3N1197, 3N3373, 3N3340 and 3N3374 Engine Arrangements listed on Pages
8 through 11. Only separate parts serviced. Refer also to Pages 112, 116 and 117 for special parts
c139167 UEG0605S
6L8357 CRANKSHAFT GP Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  0S-1594 [12] BOLT  
  3B-4506 [12] LOCKWASHER  
  7L-2534 [1] RING  
  5L-7856 [1] THROWER  
  8L-9802 [16] PLUG  
    (PART OF 6L8246 ASSEM.)
  2N-7048 [9] BEARING  
    (STANDARD)
  2N-7117 [9] BEARING  
    (.050"UNDERSIZE)
  5L-2093 [1] GASKET  
  8L-3972 [1] BAFFLE  
  8L-9835 [16] SNAP RING  
  0L-1024 [16] PLUG  
    (PARTS OF 6L8246 CRANKSHAFT ASSEM.)
  0T-0857 [8] BOLT  
  6L-1881 [8] LOCK  
  7B-0537 [8] DOWEL  
  5L-2683 [20] BOLT  
  6L-1881 [16] LOCK  
  7B-0537 [16] DOWEL  
    (PARTS OF 6L8246 CRANKSHAFT ASSEM.)
  8L-3972 [1] BAFFLE  
  5L-2093 [1] GASKET  
  6L-8246 [1] CRANKSHAFT ASSEM.  
  3N-3234 C [2] RING  
  5L-7858 [1] THROWER  
  7L-2534 [1] RING  
  0S-1594 [12] BOLT  
  3B-4506 [12] LOCKWASHER  
 

#UEG0605S0112
 

6L-8357: CRANKSHAFT GP

6L8357 CRANKSHAFT GROUP
Serial No. 49C408-Up
Refer also to Pages 112, 116 and 117 for special parts
c177650 UEG0605S
6L8357 CRANKSHAFT GP Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8L-3972 [2] BAFFLE  
2. 5L-2093 [2] GASKET  
3. 0S-1594 [24] BOLT  
4. 3B-4506 [24] LOCKWASHER  
5. 3N-7326 C [1] THROWER  
6. 3N-9160 C [2] RING  
7. 3N-2958 RC [1] CRANKSHAFT ASSEM.  
    (Includes)
8. 5P-3476 C [8] BOLT  
9. 5L-2683 [16] BOLT  
10. 7B-0537 [24] DOWEL  
11. 0T-0857 [8] BOLT  
12. 3N-3234 [2] RING  
13. 3N-7327 C [1] THROWER  
14. 8N-7764 C [9] BEARING (standard)  
  8N-7765 AB BEARING-MAIN (0.63-U.S.)  
  8N-7766 AB BEARING-MAIN (1.27-U.S.)  
  8N-7767 AB BEARING-MAIN (0.63-O.S.)  
  8N-7768 AB BEARING-MAIN (0.63-U.S.-0.63-O.S.)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0605S0113
 

4W-7720: CRANKSHAFT GP

4W7720 CRANKSHAFT GROUP
c321908 UEG0605S
4W7720 CRANKSHAFT GP Parts scheme
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Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-2567 [1] ADAPTER-SEAL  
2. 8N-7764 [9] BEARING-MAIN  
  8N-7765 AB BEARING-MAIN (0.63-U.S.)  
  8N-7766 AB BEARING-MAIN (1.27-U.S.)  
  8N-7767 AB BEARING-MAIN (0.63-O.S.)  
  8N-7768 AB BEARING-MAIN (0.63-U.S.-0.63-O.S.)  
3. 4W-2566 [1] ADAPTER-SEAL  
4. 0S-1594 [24] BOLT  
5. 5L-2093 [2] GASKET  
6. 4W-2606 [1] SEAL GP-CRANKSHAFT  
7. 4W-7718 R [1] CRANKSHAFT AS  
8. 6L-8201 B [4] COUNTERWEIGHT  
9. 7B-0537 [24] DOWEL  
10. 0T-0857 B [8] BOLT  
11. 5L-2683 [16] BOLT  
12. 5L-2662 [8] COUNTERWEIGHT  
13. 5P-3476 [8] BOLT-SOCKET HEAD  
14. 4W-2607 [1] SEAL GP-CRANKSHAFT  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0605S0114
 

3N-8008: SEAL GP-CRANKSHAFT CONVERSION

3N8008 CRANKSHAFT CONVERSION SEAL GROUP
FIELD INSTALLATION
c152603 UEG0605S
3N8008 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5L-2093 [1] GASKET  
2. 3N-3170 [1] ADAPTER  
3. 3N-7821 H [1] ADAPTER  
    (Use with 5L1857 Adapter)
  3N-7822 H [1] ADAPTER  
    (Use with 4L8819 Adapter)
  3N-7823 H [1] ADAPTER  
    (Use with 7L2571 Adapter)
4. 1A-9579 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  3N-3333 [8] SPACER  
5. 7D-1979 [1] SEAL  
6. 3N-7311 [1] SLEEVE  
7. 3N-3166 [1] SEAL  
8. 8S-4754 J [4] BOLT .875 in.(2.22 cm) diameter  
  8S-4755 [4] BOLT 1 in.(2.54 cm) diameter  
    (Use as Required)
9. 5P-3022 J [1] INSTALLER  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  3N-8049 [1] LOCTITE KIT (service)  
  H   NOT PART OF 3N8008 SEAL GROUP
  J   USE TO INSTALL WEAR SLEEVE
 

#UEG0605S0115
 

3N-8000: SEAL GP-CRANKSHAFT CONVERSION

3N8000 CRANKSHAFT CONVERSION SEAL GROUP--Rear
FIELD INSTALLATION
c174549 UEG0605S
3N8000 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
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Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5L-2093 [1] GASKET  
2. 3N-3168 [1] ADAPTER  
3. 6K-4936 [8] BOLT  
  3F-1417 [8] WASHER  
4. 7D-1979 [1] SEAL  
5. 3N-7311 [1] SLEEVE  
6. 3N-3166 [1] SEAL  
7. 5P-3022 H [1] INSTALLER  
8. 8S-4754 H [1] BOLT .875 in. (2.22 cm) diameter  
  8S-4755 H [1] BOLT 1 in. (2.54 cm) diameter  
    (Use as required)
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  3N-8049 [1] LOCTITE KIT (service)  
  H   USED TO INSTALL WEAR SLEEVE
 

#UEG0605S0116
 

4W-2571: SEAL GP-CRANKSHAFT CONVERSION

4W2571 CRANKSHAFT CONVERSION SEAL GROUP--REAR--OPPOSITE ROTATION
Field Installation
c331741 UEG0605S
4W2571 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-2567 [1] ADAPTER-SEAL  
2. 5L-2093 [1] GASKET  
3. 4W-2606 [1] SEAL GP-CRANKSHAFT  
 

#UEG0605S0117
 

4W-2568: SEAL GP-CRANKSHAFT CONVERSION

4W2568 CRANKSHAFT CONVERSION SEAL GROUP--FRONT--STANDARD ROTATION
When Useing This Group To Convert An Engine A New Front Adapter
Must Also Be Used
Field Installation
c331652 UEG0605S
4W2568 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-2566 [1] ADAPTER-SEAL  
2. 5L-2093 [1] GASKET  
3. 4W-2606 [1] SEAL GP-CRANKSHAFT  
 

#UEG0605S0118
 

4W-2570: SEAL GP-CRANKSHAFT CONVERSION

4W2570 SEAL GP--CRANKSHAFT CONVERSION
Front--Opposite Rotation
When Using This Group To Convert An Engine,
A New Front Adapter Must Also Be Used. Field Installation
c331742 UEG0605S
4W2570 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-2566 [1] ADAPTER-SEAL  
2. 5L-2093 [1] GASKET  
3. 4W-2607 [1] SEAL GP-CRANKSHAFT  
 

#UEG0605S0119
 

4W-2569: SEAL GP-CRANKSHAFT CONVERSION

4W2569 SEAL GP--CRANKSHAFT CONVERSION
Rear--Standard Rotation
Field Installation
c331743 UEG0605S
4W2569 SEAL GP-CRANKSHAFT CONVERSION Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-2567 [1] ADAPTER-SEAL  
2. 5L-2093 [1] GASKET  
3. 4W-2607 [1] SEAL GP-CRANKSHAFT  
 

Information:

Engine News
New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower
1980/02/06
In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/07/09
Some Nuts Used On Main Bearing Caps Are Smaller Than Standard Size Across The Flat Sides
1980/08/13
6V4133 Wedge Bracket Makes Cylinder Liner Removal Easier
1981/07/15
New Main Bearings And Connecting Rod Bearings Have Thicker Layer Of Surface Material
1982/02/24
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
Gasket Changed For Cylinder Block Side Cover
1984/05/16
Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/06/01
Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/08/01
Improved Crankshaft Seals Available{1150,1160,1161}
1998/06/01
5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster
1978/01/18
Use New Main Bearings In Replacement Cylinder Blocks
1978/07/05
Change In Procedure To Check Main Bearing Clearance
1978/08/30
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}
Installation Of 1W6265, 1W6266 And 1W6267 Insert For Cylinder Liner Seat{1217}
Installation Of 1W6265, 1W6266 And 1W6267 Insert For Cylinder Liner Seat{1217}
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 6V4840 Tool Group To Install Water Ferrules{1201}
Use Of 6V4840 Tool Group To Install Water Ferrules{1201}
Installation Of Engine Block, Support Rails And/Or Oil Pan Base Assembly{1154, 1201, 1302}
Installation Of Engine Block, Support Rails And/Or Oil Pan Base Assembly{1154, 1201, 1302}
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}
Specifications
Cylinder Block<BR> (Earlier)
G379, G398 & G399 ENGINES
Cylinder Liner
G379, G398 & G399 ENGINES
Cylinder Liner Projection<BR> (Earlier)
G379, G398 & G399 ENGINES
Cylinder Block<BR> (Later)
G379, G398 & G399 ENGINES
Cylinder Liner Projection<BR> (Later)
G379, G398 & G399 ENGINES
Main Bearings
G379, G398 & G399 ENGINES
Bearing Surface (Journal) For Main Bearings
G379, G398 & G399 ENGINES
Reuse And Salvage Guidelines
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}
Disassembly and Assembly
Crankshaft Main Bearings
G379, G398 & G399 ENGINES
Piston Cooling Tubes
G379, G398 & G399 ENGINES
Cylinder Liners
G379, G398 & G399 ENGINES
Camshaft Bearings
G379, G398 & G399 ENGINES
Service Magazine
New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}
1980/02/04
Some Nuts Used On Main Bearing Caps Are Smaller Than Standard Size Across The Flat Sides{1203}
1980/07/14
Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}
1981/12/21
New Tools Available For Installation Of Cylinder Liner Seats; Service Tools For Counterboring Tool Group{0622,1217}
1982/01/25
New Liner Seat Insert With O-Ring Seal Available{1217,1216}
1982/01/25
New Main Bearings And Connecting Rod Bearings Have Thicker Layer Of Surface Material{1230,1203,1219}
1982/02/22
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
Bolts Now Used Instead Of Studs To Hold Cylinder Heads{1101,1201}
1982/05/10
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
New Sealant Used Between The Fuel Injection Pump/Governor Drive Housing And Cylinder Block{1288}
1983/01/17
New Gasket Prevents Leakage{1201,1362,1380}
1983/04/04
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
Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21
Gasket Changed For Cylinder Block Side Cover{1201,1362}
1984/05/14
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
Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20
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
Large Engine Blowby Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1988/06/20
New Filler Bands Give A Better Seal Between The Cylinder Liners And Cylinder Block{1201,1216}
1979/05/14
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

Caterpillar Parts SIS Catalog G399 :

CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
CYLINDER BLOCK & COVERS GP
3N-2679 CYLINDER BLOCK & COVERS GP
HEAD AS
7C-5951 HEAD AS
CYLINDER HEAD GP
7C-5953 CYLINDER HEAD GP
CYLINDER HEAD GP
7C-5953 CYLINDER HEAD GP
MECHANISM GP-CYL HEAD & VALVE
3N-2062 MECHANISM GP-CYL HEAD & VALVE
MECHANISM GP-CYL HEAD & VALVE
3N-2062 MECHANISM GP-CYL HEAD & VALVE
CRANKSHAFT GP
6L-8357 CRANKSHAFT GP
CRANKSHAFT GP
6L-8357 CRANKSHAFT GP
CRANKSHAFT GP
4W-7720 CRANKSHAFT GP
SEAL GP-CRANKSHAFT CONVERSION
3N-8008 SEAL GP-CRANKSHAFT CONVERSION
SEAL GP-CRANKSHAFT CONVERSION
3N-8000 SEAL GP-CRANKSHAFT CONVERSION
SEAL GP-CRANKSHAFT CONVERSION
4W-2571 SEAL GP-CRANKSHAFT CONVERSION
SEAL GP-CRANKSHAFT CONVERSION
4W-2568 SEAL GP-CRANKSHAFT CONVERSION
SEAL GP-CRANKSHAFT CONVERSION
4W-2570 SEAL GP-CRANKSHAFT CONVERSION

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