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6N8079 CRANKSHAFT GROUP ENGINE SERIAL NO. 3N79763-UP. 4N7697 CRANKSHAFT ASSEMBLY IS REPLACED BY 4N7693 SHOWN ON PAGE 8 D7G


BASIC ENGINE
CRANKSHAFT GP
PISTON & ROD GP
CAMSHAFT GP
PISTON & ROD GP
CYLINDER HEAD GP

TRACK-TYPE TRACTOR D7G TRACK-TYPE TRACTOR 72W
 D7G LGP TRACTOR 72W00001-00607 (MACHINE) POWERED BY 3306 ENGINE SEBP1097 D7G 72W   (1976)

BASIC ENGINE

CRANKSHAFT GP
CRANKSHAFT AS
4N-7693 CRANKSHAFT AS
CRANKSHAFT GP
2P-6222 CRANKSHAFT GP
CRANKSHAFT SERVICE THRUST PLATE-FIELD INSTALLATION
CRANKSHAFT GP
6N-8079 CRANKSHAFT GP
CRANKSHAFT BEARING REPLACEMENTS
SEAL GP-CRANKSHAFT
2P-6226 SEAL GP-CRANKSHAFT
 

#SEBP10970020
 

6N-8079: CRANKSHAFT GP

6N8079 CRANKSHAFT GROUP
ENGINE SERIAL NO. 3N79763-UP. 4N7697 CRANKSHAFT ASSEMBLY IS REPLACED BY
4N7693 SHOWN ON PAGE 8
c403869 SEBP1097
6N8079 CRANKSHAFT GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 100-3652 [2] PLATE-THRUST  
2. 2W-7458 YR [1] CRANKSHAFT AS  
3. 232-3233 C [7] BEARING-MAIN (STANDARD)  
  8N-8225 AB [7] BEARING-MAIN (0.25-MM US)  
  8N-8226 AB [7] BEARING-MAIN (0.51-MM US)  
  8N-8227 AB [7] BEARING-MAIN (0.76-MM US)  
  8N-8228 AB [7] BEARING-MAIN (0.51-MM OS)  
  8N-8229 AB [7] BEARING-MAIN (0.51-MM OS)  
  4P-7305 AB [7] BEARING-MAIN (0.51-MM OS, 0.51-MM US)  
  4P-7306 AB [7] BEARING-MAIN (0.51-MM OS, 0.76-MM US)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10970021
 

CRANKSHAFT BEARING REPLACEMENTS

CRANKSHAFT BEARING REPLACEMENTS
SEBP10970021 SEBP1097
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
   
  4S-8881 [7] BEARING (.010 IN. UNDERSIZE)  
   
  4S-8883 [7] BEARING (.020 IN. UNDERSIZE)  
   
  4S-8885 [7] BEARING (.030 IN. UNDERSIZE)  
   
    BEARINGS FOR REBORED CYLINDER BLOCK
   
  6N-3822 [7] BEARING-MAIN  
    (.020 IN. OVERSIZE & .010 IN. UNDERSIZE)
   
  6N-3823 [7] BEARING-MAIN  
    (.020 IN. OVERSIZE)
 

#SEBP10970022
 

2P-6226: SEAL GP-CRANKSHAFT

2P6226 CRANKSHAFT SEAL GROUP
c210718 SEBP1097
2P6226 SEAL GP-CRANKSHAFT Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6N-8853 C [1] SEAL-LIP TYPE  
2. 2P-3858 [1] SLEEVE-WEAR  
3. 2P-3859 [1] SLEEVE-WEAR  
4. 5S-6296 [1] SEAL-LIP TYPE  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP10970023
 

2P-6272: PISTON & ROD GP

2P6272 CONNECTING ROD AND PISTON GROUP-6 REQUIRED
ENGINE SERIAL NO. 3N40015 TO 3N76794 & 3N78127 TO 3N89894 INCLUSIVE
c222694 SEBP1097
2P6272 PISTON & ROD GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-9805 C [1] PIN-PISTON  
2. 1S-9543 [2] RETAINER-PIN  
3. 5S-2793 [1] ROD AS  
  8N-0703 C [1] BEARING  
4. 1P-9956 [2] BOLT-CONNECTING ROD  
  5S-6348 [2] NUT-SPECIAL  
5. 7M-7821 [1] BEARING-CONNECTING ROD  
  2S-0502 [1] BEARING-.254MM US (.010IN)  
  2S-0503 [1] BEARING-.508MM US (.020IN)  
  7M-7826 [1] BEARING-.762MM US (.030IN)  
6. 4N-9258 C [1] PISTON GP  
7. 9S-7788 [1] RING-PISTON OIL  
8. 5S-6750 [1] RING-INTERMEDIATE  
9. 9S-3029 [1] RING-PISTON TOP  
  9S-3068 C [1] RING GP  
    (CONSISTS OF COMPLETE
    SET OF RINGS FOR
    ONE PISTON)
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP10970024
 

2P-6202: CAMSHAFT GP

2P6202 CAMSHAFT GROUP
c226144 SEBP1097
2P6202 CAMSHAFT GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8N-3981 C [1] CAMSHAFT  
2. 7S-2204 [1] WASHER-THRUST  
3. 8S-1491 [1] LOCK  
4. 0S-0509 [2] BOLT  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP10970025
 

2P-6272: PISTON & ROD GP

2P6272 CONNECTING ROD AND PISTON GROUP-6 REQUIRED
ENGINE SERIAL NO. 3N89895-UP
c314546 SEBP1097
2P6272 PISTON & ROD GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-9805 [1] PIN-PISTON  
2. 1S-9543 [2] RETAINER-PIN  
3. 8N-1721 CR [1] ROD AS-CONNECTING  
  8N-1849 C [1] BEARING-CONNECTING ROD  
4. 1P-9956 [2] BOLT-CONNECTING ROD  
  5S-6348 C [2] NUT-SPECIAL  
5. 4W-5739 C [1] BEARING-CONNECTING ROD (STANDARD)  
  8N-8221 C [1] BEARING-CONNECTING ROD (.010IN)  
  8N-8222 C [1] BEARING-CONNECTING ROD (.020IN)  
  8N-8223 C [1] BEARING-CONNECTING ROD (.030IN)  
6. 9N-5251 C [1] PISTON GP  
7. 9S-7788 [1] RING-PISTON  
8. 5S-6750 [1] RING-INTERMEDIATE  
9. 9S-3029 [1] RING-PISTON TOP  
  9S-3068 [1] RING GP (CONSISTS OF COMPLETE  
    SET OF RINGS FOR ONE
    PISTON)
  C   CHANGE FROM PREVIOUS TYPE
  R   REMFG PART MAY BE AVAILABLE
 

#SEBP10970026
 

8N-5007: CONNECTING ROD AND PISTON GROUP

8N5007 CONNECTING ROD AND PISTON GROUP-6 REQUIRED
ENGINE SERIAL NO. 3N76795 TO 3N78126 INCLUSIVE
c223271 SEBP1097
8N5007 CONNECTING ROD AND PISTON GROUP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-9805 [1] PIN  
2. 1S-9543 [2] RETAINER  
3. 6N-8069 [1] ROD ASSEM.  
  8N-0703 [1] BEARING  
4. 1P-9956 [2] BOLT  
  5S-6348 [2] NUT  
5. 4N-6258 [1] BEARING (Standard)  
  2S-0502 [1] BEARING (.010" Undersize)  
  2S-0503 [1] BEARING (.020" Undersize)  
  7M-7826 [1] BEARING (.030" Undersize)  
6. 4N-9258 [1] PISTON GROUP  
7. 9S-7788 [1] RING (Oil)  
8. 5S-6750 [1] RING (intermediate)  
9. 9S-3029 [1] RING (top)  
  9S-3068 [1] RING GROUP  
    (Consists of Complete Set of Rings For One Piston)
 

#SEBP10970027
 

6N-1879: CYLINDER HEAD GROUP

6N1879 CYLINDER HEAD GROUP
ENGINE SERIAL NO. 3N40015 TO 3N55449 INCLUSIVE
4N7446 HEAD PARTS ARE SHOWN ON PAGE 12
c205044 SEBP1097
6N1879 CYLINDER HEAD GROUP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-7446 Y [1] HEAD ASSEM.  
    (Separate Illustration)
2. 7S-8809 [6] VALVE (intake)  
3. 7S-6767 [6] VALVE (exhaust)  
4. 7S-7144 [12] SPRING  
5. 2A-4429 [24] LOCK  
6. 5S-5874 [12] ROTOCOIL  
7. 8S-3970 [6] CHAMBER ASSEM.  
  7S-3206 [6] SEAL  
  5M-2667 [6] GASKET .194 in. (4.9 mm) thick  
  2S-8959 [6] GASKET .223 in. (5.66 mm) thick  
  2S-8960 [6] GASKET .248 in. (6.3 mm) thick  
8. 5S-6281 [1] GASKET  
  Y   SEPARATE ILLUSTRATION
 

#SEBP10970028
 

3N-3916: CYLINDER HEAD GP

3N3916 CYLINDER HEAD GROUP*R
ENGINE SERIAL NO. 3N55450 TO 3N74352 INCLUSIVE
6N8889 HEAD PARTS ARE SHOWN ON PAGE 12A
c166412 SEBP1097
3N3916 CYLINDER HEAD GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-8809 [6] VALVE (intake)  
2. 2A-4429 [24] LOCK  
3. 5S-5874 [12] ROTOCOIL  
4. 7S-7144 [12] SPRING  
5. 8S-3970 [6] CHAMBER ASSEM.  
  7S-3206 [6] SEAL  
  5M-2667 H [6] GASKET  
6. 7S-6767 [6] VALVE (exhaust)  
7. 6N-8889 CY [1] HEAD ASSEM.  
    (Separate Illustration)
8. 5S-6281 [1] GASKET  
9. 2S-8959 H [6] GASKET (Range 1)  
  2S-8960 H [6] GASKET (Range 2)  
  H   USE AS REQUIRED
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#SEBP10970029
 

3N-3916: CYLINDER HEAD GP

3N3916 CYLINDER HEAD GROUP*R
ENGINE SERIAL NO. 3N74353 TO 3N79762 INCLUSIVE
c555871 SEBP1097
3N3916 CYLINDER HEAD GP Parts scheme
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Parts for your D7G TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-7144 [12] SPRING-VALVE  
2. 8N-7782 [12] ROTOCOIL AS  
3. 2A-4429 [24] LOCK-RETAINER  
4. 6N-8014 C [1] CYLINDER HEAD AS  
5. 3B-0623 [6] PLUG-CUP  
6. 3S-8313 [7] PLUG-CUP  
7. 1S-3062 [18] DIRECTOR-WATER  
8. 7N-4448 [6] INSERT  
9. 1W-5321 [6] INSERT-VALVE SEAT  
10. 2B-0858 [3] PLUG-PIPE  
11. 2P-1262 [12] GUIDE-VALVE  
12. 7S-3206 [6] SEAL-O-RING  
13. 8S-3970 [6] CHAMBER AS  
14. 6N-7263 [1] GASKET-CYLINDER HEAD  
15. [6] VALVE-INLET  
16. 8N-0875 [6] VALVE-EXHAUST  
17. 5M-2667 [6] GASKET-CHAMBER (4.93MM THK)  
  2S-8959 [6] GASKET-CHAMBER (5.66MM THK)  
  2S-8960 [6] GASKET-CHAMBER (6.3MM THK)  
  C   CHANGE FROM PREVIOUS TYPE
 

Information:

Tool Operating Manual
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}
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 Magazine
Use the 171-7212 Wear Sleeve to Repair the Crankshaft Hub {1160}
2011/09/20
A New Type of Main Bearing is Available {1203}
2005/12/26
40 Power Microscope is Available for Inspecting Bearing Journals on Crankshafts {0777, 1202}
2006/01/16

Caterpillar Parts SIS Catalog D7G :

CRANKSHAFT SERVICE THRUST PLATE-FIELD INSTALLATION
CRANKSHAFT GP
2P-6222 CRANKSHAFT GP
CRANKSHAFT AS
4N-7693 CRANKSHAFT AS
CYLINDER BLOCK GP
1N-3576 CYLINDER BLOCK GP
CYLINDER BLOCK AS
7N-6550 CYLINDER BLOCK AS
CYLINDER BLOCK GP
6N-8124 CYLINDER BLOCK GP
CYLINDER BLOCK AS
2P-8776 CYLINDER BLOCK AS
8N-6273 KIT-BLOCK HARDWARE
CRANKSHAFT BEARING REPLACEMENTS
SEAL GP-CRANKSHAFT
2P-6226 SEAL GP-CRANKSHAFT
PISTON & ROD GP
2P-6272 PISTON & ROD GP
CAMSHAFT GP
2P-6202 CAMSHAFT GP
PISTON & ROD GP
2P-6272 PISTON & ROD GP
CONNECTING ROD AND PISTON GROUP
8N-5007 CONNECTING ROD AND PISTON GROUP
CYLINDER HEAD GROUP
6N-1879 CYLINDER HEAD GROUP
CYLINDER HEAD GP
3N-3916 CYLINDER HEAD GP

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