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278-8935 HEAD GP-MOTOR -HYDROSTATIC DRIVE, LH S/N 6S61-UP; 7P61-UP PART OF 243-6639 MOTOR GP-PISTON Type 1 D6K2




POWER TRAIN

MOTOR GP
 

#M00809750300
 

278-8935: HEAD GP-MOTOR

278-8935 HEAD GP-MOTOR -HYDROSTATIC DRIVE, LH
S/N 6S61-UP; 7P61-UP
PART OF 243-6639 MOTOR GP-PISTON
Type 1
i02645620 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 278-8936 Y [1] VALVE GP-MOTOR CONTROL (HYDROSTATIC DRIVE)  
2. 278-8937 Y [1] VALVE GP-FLUSHING (HYDROSTATIC DRIVE)  
3. 9S-8004 [1] PLUG (9/16-18-THD)  
4. 124-9882 [1] TRUNNION  
5. 124-9881 [1] PISTON  
6. 135-7454 [1] PISTON  
7. 125-2205 M [1] BOLT-SHALLOW HEAD (M14X1.5X25-MM)  
8. 124-9884 [1] PIN-THREADED  
9. 3E-6760 [6] SEAL-O-RING  
10. 6V-8201 M [8] BOLT-SOCKET HEAD (M16X2X45-MM)  
11. 120-4394 [1] PLUG-BREAK OFF  
12. 123-0698 [2] PLUG  
13. 123-5787 [2] SEAT  
14. 3J-1907 [1] SEAL-O-RING  
15. 301-7890 Y [2] VALVE GP-CHECK  
16. 8T-7811 M [4] BOLT-SOCKET HEAD (M12X1.75X50-MM)  
17. 061-7540 [1] SEAL-O-RING  
18. 135-7455 [3] SEAL  
19. 7X-2906 [2] PIN  
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#M00809750301
 

278-8935: HEAD GP-MOTOR

278-8935 HEAD GP-MOTOR -HYDROSTATIC DRIVE, LH
S/N 6S61-UP; 7P61-UP
PART OF 243-6639 MOTOR GP-PISTON
Type 2
i07284979 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 124-9882 [1] TRUNNION  
2. 373-8445 C [1] PISTON  
3. 343-9780 C [1] PISTON  
4. 125-2205 M [1] BOLT-SHALLOW HEAD (M14X1.5X25-MM)  
5. 373-8446 C [1] PIN-THREADED  
6. 4J-5477 C [3] SEAL-O-RING  
7. 8T-0348 CM [8] BOLT-SOCKET HEAD (M16X2X50-MM)  
8. 227-0136 C [2] PLUG  
9. 123-5787 [2] SEAT  
10. 301-7890 Y [2] VALVE GP-CHECK (HYDROSTATIC DRIVE MOTOR)  
11. 7X-2906 [2] PIN  
12. 9X-7408 C [3] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#M00809750302
 

279-0543: HEAD GP-MOTOR

279-0543 HEAD GP-MOTOR -HYDROSTATIC DRIVE, RH
S/N 6S61-UP; 7P61-UP
PART OF 243-6640 MOTOR GP-PISTON
Type 1
i02646113 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 278-8936 Y [1] VALVE GP-MOTOR CONTROL (HYDROSTATIC DRIVE)  
2. 278-8937 Y [1] VALVE GP-FLUSHING (HYDROSTATIC DRIVE)  
3. 9S-8004 [1] PLUG (9/16-18-THD)  
4. 124-9882 [1] TRUNNION  
5. 124-9881 [1] PISTON  
6. 135-7454 [1] PISTON  
7. 125-2205 M [1] BOLT-SHALLOW HEAD (M14X1.5X25-MM)  
8. 124-9884 [1] PIN-THREADED  
9. 3E-6760 [6] SEAL-O-RING  
10. 6V-8201 M [8] BOLT-SOCKET HEAD (M16X2X45-MM)  
11. 120-4394 [1] PLUG-BREAK OFF  
12. 123-0698 [2] PLUG  
13. 123-5787 [2] SEAT  
14. 3J-1907 [1] SEAL-O-RING  
15. 301-7890 Y [2] VALVE GP-CHECK  
16. 8T-7811 M [4] BOLT-SOCKET HEAD (M12X1.75X50-MM)  
17. 061-7540 [1] SEAL-O-RING  
18. 135-7455 [3] SEAL  
19. 7X-2906 [2] PIN  
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#M00809750303
 

279-0543: HEAD GP-MOTOR

279-0543 HEAD GP-MOTOR -HYDROSTATIC DRIVE, RH
S/N 6S61-UP; 7P61-UP
PART OF 243-6640 MOTOR GP-PISTON
Type 2
i07285093 M0080975
  For full view, you need register

Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 124-9882 [1] TRUNNION  
2. 373-8445 C [1] PISTON  
3. 343-9780 C [1] PISTON  
4. 125-2205 M [1] BOLT-SHALLOW HEAD (M14X1.5X25-MM)  
5. 373-8446 C [1] PIN-THREADED  
6. 4J-5477 C [3] SEAL-O-RING  
7. 8T-0348 CM [8] BOLT-SOCKET HEAD (M16X2X50-MM)  
8. 227-0136 C [2] PLUG  
9. 123-5787 [2] SEAT  
10. 301-7890 Y [2] VALVE GP-CHECK (HYDROSTATIC DRIVE MOTOR)  
11. 7X-2906 [2] PIN  
12. 9X-7408 C [3] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#M00809750304
 

468-9805: HOUSING GP-PUMP

468-9805 HOUSING GP-PUMP
S/N 6S61-UP; 7P61-UP
PART OF 488-7191 HOUSING GP-PUMP
i06752930 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 478-3808 [1] HOUSING  
2. 478-3809 [1] COUPLING  
3. 199-3676 [1] RING-RETAINING  
4. 462-0498 [4] KIT-SEAL (PUMP HOUSING)  
    (EACH SEAL KIT INCLUDES SEAL CARRIER & O-RING SEAL)
5. 462-0497 [4] RING-GUIDE  
6. 9S-8004 [11] PLUG (9/16-18-THD)  
7. 3J-1907 [11] SEAL-O-RING  
8. 462-0503 [2] BEARING-BUSHING  
9. 462-0702 [2] BUSHING  
10. 382-9259 [7] FILTER (SCREEN)(SWING PUMP)  
11. 458-9684 [2] PIN  
 

#M00809750305
 

488-7191: HOUSING GP-PUMP

488-7191 HOUSING GP-PUMP
S/N 6S61-UP; 7P61-UP
PART OF 461-2712 PUMP GP-PISTON
i06826951 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 468-9805 Y [1] HOUSING GP-PUMP  
2. 468-9800 [4] VALVE AS-RELIEF (CROSSOVER)  
    (EACH INCLUDES)
  252-8073 [1] SEAL-O-RING  
3. 464-6779 Y [1] VALVE GP-RELIEF (CHARGE)  
4. 478-3802 [2] VALVE GP-SEQUENCE  
  Y   SEPARATE ILLUSTRATION
 

#M00809750306
 

457-5420: LINES GP-CHARGE PRESSURE

457-5420 LINES GP-CHARGE PRESSURE
S/N 6S61-UP; 7P61-UP
PART OF 457-1422, 549-8324 PUMP & LINES AR
AN ATTACHMENT
i06952968 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 203-3847 [1] BRACKET AS  
2. 241-6215 [1] ELBOW AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8076 [1] ELBOW  
3. 389-5919 [1] FILM-IDENTIFICATION (HYDRAULIC & XMSN OIL FILTER)  
4. 428-9067 [1] BRACKET  
5. 431-0681 Y [1] FILTER GP-OIL (HYDRAULIC)  
6. 457-6430 I [1] HOSE AS  
7. 148-8335 [2] CONNECTOR AS  
    (EACH INCLUDES)
  5K-9090 [1] SEAL-O-RING  
  6V-8635 [1] CONNECTOR  
  7M-8485 [1] SEAL-O-RING  
8. 148-8360 [1] ELBOW AS  
  6V-9182 [1] ELBOW  
  6V-9746 [1] SEAL-O-RING  
  7M-8485 [1] SEAL-O-RING  
9. 164-5567 [1] COUPLER AS-QUICK DISCONNECT (MALE)  
  6V-3965 [1] FITTING (QUICK DISCONNECT)  
  214-7568 [1] SEAL-O-RING  
10. 164-5590 [1] VALVE AS-FLUID SAMPLING  
  3J-7354 [1] SEAL-O-RING  
  8C-3446 [1] VALVE-SAMPLING  
11. 344-5675 M [1] NUT (M10X1.5-THD)  
12. 6V-0852 [1] CAP-DUST  
13. 7D-7233 [1] CLIP (LOOP)  
14. 7X-7729 [1] WASHER (11X25X3-MM THK)  
15. 8C-3451 [1] CAP-DUST (HYDRAULIC OIL)  
16. 8T-4121 [1] WASHER-HARD (11X21X2.5-MM THK)  
17. 8T-4137 M [1] BOLT (M10X1.5X20-MM)  
18. 8T-4196 M [4] BOLT (M10X1.5X35-MM)  
19. 8T-7934 [4] WASHER-HARD (11X21X5-MM THK)  
  I   REFER TO HYDRAULIC INFORMATION SYSTEM
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#M00809750307
 

457-5422: LINES GP-CHARGE PRESSURE

457-5422 LINES GP-CHARGE PRESSURE
S/N 6S61-UP; 7P61-UP
PART OF 457-1423 PUMP & LINES AR
AN ATTACHMENT
i06967935 M0080975
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Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 148-8433 [1] TEE AS  
  6V-8397 [2] SEAL-O-RING  
  6V-9836 [1] TEE-SWIVEL  
2. 148-8449 [1] TEE AS-SWIVEL  
  6V-9746 [2] SEAL-O-RING  
  6V-9839 [1] TEE-SWIVEL  
3. 148-8342 [2] CONNECTOR AS  
    (EACH INCLUDES)
  3K-0360 [1] SEAL-O-RING  
  6V-8632 [1] CONNECTOR  
  7J-9108 [1] SEAL-O-RING  
4. 173-3323 [1] ADAPTER  
5. 203-3847 [3] BRACKET AS  
6. 241-6215 [1] ELBOW AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8076 [1] ELBOW  
7. 249-8600 Y [1] PUMP GP-PISTON (HYDRAULIC)  
8. 349-1178 [1] SENSOR-PRESSURE (HYDRAULIC OIL)  
9. 389-5919 [1] FILM-IDENTIFICATION (HYDRAULIC & XMSN OIL FILTER)  
10. 389-5922 [1] FILM-IDENTIFICATION (HYDRAULIC & XMSN OIL FILTER)  
11. 416-8305 Y [1] FILTER GP-OIL (HYDRAULIC, TRANSMISSION)  
12. 428-9067 [1] BRACKET  
13. 431-0681 Y [1] FILTER GP-OIL (HYDRAULIC, TRANSMISSION)  
14. 457-6430 I [1] HOSE AS  
15. 457-6435 [1] HOSE  
16. 457-6532 I [1] HOSE AS  
17. 457-6533 I [1] HOSE AS  
18. 457-6534 I [1] HOSE AS  
19. 457-6535 I [1] HOSE AS  
20. 148-8327 [1] CONNECTOR AS  
  3D-2824 [1] SEAL-O-RING  
  6V-8637 [1] CONNECTOR  
  6V-9746 [1] SEAL-O-RING  
21. 148-8335 [2] CONNECTOR AS  
    (EACH INCLUDES)
  5K-9090 [1] SEAL-O-RING  
  6V-8635 [1] CONNECTOR  
  7M-8485 [1] SEAL-O-RING  
22. 148-8336 [1] CONNECTOR AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8397 [1] SEAL-O-RING  
  6V-8636 [1] CONNECTOR  
23. 148-8341 [1] CONNECTOR AS  
  3D-2824 [1] SEAL-O-RING  
  6V-8713 [1] CONNECTOR  
  7J-9108 [1] SEAL-O-RING  
24. 148-8360 [1] ELBOW AS  
  6V-9182 [1] ELBOW  
  6V-9746 [1] SEAL-O-RING  
  7M-8485 [1] SEAL-O-RING  
25. 148-8382 [1] ELBOW AS  
  3D-2824 [1] SEAL-O-RING  
  7J-9108 [1] SEAL-O-RING  
  8T-0404 [1] ELBOW  
26. 150-4049 [1] ELBOW AS  
  6V-9746 [1] SEAL-O-RING  
  7M-8485 [1] SEAL-O-RING  
  8T-4149 [1] ELBOW  
27. 164-5567 [2] COUPLER AS-QUICK DISCONNECT (MALE)  
    (EACH INCLUDES)
  6V-3965 [1] FITTING (QUICK DISCONNECT)  
  214-7568 [1] SEAL-O-RING  
28. 164-5590 [1] VALVE AS-FLUID SAMPLING  
  3J-7354 [1] SEAL-O-RING  
  8C-3446 [1] VALVE-SAMPLING  
29. 176-5166 [4] SPACER (13X23.6X8.5-MM THK)  
30. 177-2215 [2] STRAP-DUAL CLAMP  
31. 180-9933 [1] ADAPTER AS  
  3J-7354 [1] SEAL-O-RING  
  135-9941 [1] ADAPTER  
32. 1P-3702 [2] SEAL-RECTANGULAR  
33. 200-6345 [1] SADDLE-MOUNTING (DUAL SWIVEL)  
34. 204-2281 [2] STRAP-CABLE  
35. 344-5675 M [3] NUT (M10X1.5-THD)  
36. 3J-1907 [1] SEAL-O-RING  
37. 5P-0046 [2] COVER  
38. 5P-2370 [1] CLIP  
39. 6D-4244 [2] CLIP (LOOP)  
40. 6V-0852 [2] CAP-DUST  
41. 6V-9829 [1] CAP (ORFS)  
42. 6V-9832 [1] CAP (ORFS)  
43. 7D-7233 [1] CLIP (LOOP)  
44. 7J-6285 [1] SEAL-O-RING  
45. 7M-8485 [1] SEAL-O-RING  
46. 7X-7729 [3] WASHER (11X25X3-MM THK)  
47. 8C-3451 [1] CAP-DUST (HYDRAULIC OIL)  
48. 8T-4121 [10] WASHER-HARD (11X21X2.5-MM THK)  
49. 8T-4137 M [2] BOLT (M10X1.5X20-MM)  
50. 8T-4182 M [8] BOLT (M10X1.5X45-MM)  
51. 8T-4194 M [4] BOLT (M12X1.75X50-MM)  
52. 8T-4196 M [8] BOLT (M10X1.5X35-MM)  
53. 8T-4983 [2] CLAMP-HOSE  
54. 8T-7934 [8] WASHER-HARD (11X21X5-MM THK)  
55. 8T-9403 [4] FLANGE-HALF  
  I   REFER TO HYDRAULIC INFORMATION SYSTEM
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#M00809750308
 

457-5415: LINES GP-DRAIN

457-5415 LINES GP-DRAIN
S/N 6S61-UP; 7P61-UP
PART OF 457-0484, 457-0485 POWER TRAIN AR
i06949688 M0080975
  For full view, you need register

Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 148-8318 [2] CONNECTOR AS  
    (EACH INCLUDES)
  3K-0360 [1] SEAL-O-RING  
  6V-8397 [1] SEAL-O-RING  
  6V-8634 [1] CONNECTOR  
2. 148-8327 [2] CONNECTOR AS  
    (EACH INCLUDES)
  3D-2824 [1] SEAL-O-RING  
  6V-8637 [1] CONNECTOR  
  6V-9746 [1] SEAL-O-RING  
3. 148-8339 [1] CONNECTOR AS  
  6V-8716 [1] CONNECTOR (STRAIGHT)  
  6V-9746 [1] SEAL-O-RING  
  7M-8485 [1] SEAL-O-RING  
4. 148-8435 [1] TEE AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8397 [2] SEAL-O-RING  
  6V-8781 [1] TEE  
5. 150-4049 [1] ELBOW AS  
  6V-9746 [1] SEAL-O-RING  
  7M-8485 [1] SEAL-O-RING  
  8T-4149 [1] ELBOW  
6. 422-3637 [1] VALVE GP-CHECK (PUMP)  
  7M-8485 [1] SEAL-O-RING  
7. [1] ADAPTER AS  
  3J-1907 [1] SEAL-O-RING  
  439-1868 [1] ADAPTER  
8. 457-6421 [1] HOSE  
9. 457-6422 I [1] HOSE AS  
10. 457-6423 I [1] HOSE AS  
11. 457-6424 I [1] HOSE AS  
12. 457-6425 I [1] HOSE AS  
13. 177-2215 [2] STRAP-DUAL CLAMP  
14. 200-6345 [1] SADDLE-MOUNTING (DUAL SWIVEL)  
15. 204-2281 [2] STRAP-CABLE  
16. 6K-8178 [1] CLIP (LOOP)  
17. 8T-6703 [2] CLAMP-HOSE  
  I   REFER TO HYDRAULIC INFORMATION SYSTEM
 

#M00809750309
 

457-5412: LINES GP-HYDROSTATIC

457-5412 LINES GP-HYDROSTATIC
S/N 6S61-UP; 7P61-UP
PART OF 457-0484, 457-0485 POWER TRAIN AR
i06949594 M0080975
  For full view, you need register

Parts for your D6K2 TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 277-4267 I [1] HOSE AS  
2. 457-6415 I [1] HOSE AS  
3. 457-6416 I [1] HOSE AS  
4. 457-6417 I [1] HOSE AS  
5. 457-6418 I [1] HOSE AS  
6. 148-8378 [1] ELBOW AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8397 [1] SEAL-O-RING  
  6V-8724 [1] ELBOW  
7. 164-9869 [1] CONNECTOR AS  
  3J-1907 [1] SEAL-O-RING  
  6V-8397 [1] SEAL-O-RING  
  9X-2297 [1] CONNECTOR  
8. 198-4777 [1] WASHER-HARD (11X25X10-MM THK)  
9. 1P-3704 [8] SEAL-RECTANGULAR  
10. 1P-5767 [8] FLANGE-HALF  
11. 344-5675 M [1] NUT (M10X1.5-THD)  
12. 5P-7468 [2] CLIP (SLOT)  
13. 5P-7469 [2] CLIP (TAB)  
14. 5P-8444 [2] GROMMET (37-MM ID)  
15. 6V-0401 [8] FLANGE-HALF  
16. 7X-0510 [16] WASHER-HARD (15.5X29X3-MM THK)  
17. 8C-6854 M [16] BOLT (M14X2X50-MM)  
18. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
19. 8T-4194 M [16] BOLT (M12X1.75X50-MM)  
20. 8T-4223 [16] WASHER-HARD (13.5X25.5X3-MM THK)  
21. 8T-6466 M [1] BOLT (M10X1.5X60-MM)  
  I   REFER TO HYDRAULIC INFORMATION SYSTEM
  M   METRIC PART
 

Information:

Special Instruction
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Specifications
Piston Motor (Hydrostatic)
D6K2 and D6K Track-Type Tractor Systems
Systems Operation
Piston Motor (Hydrostatic)
D6K2 and D6K Track-Type Tractor Systems
Motor Control Valve (Hydrostatic) (Displacement)
D6K2 and D6K Track-Type Tractor Systems
Location of Components (Power Train System)
D6K2 and D6K Track-Type Tractor Systems
General Information (Power Train System)
D6K2 and D6K Track-Type Tractor Systems
Reuse And Salvage Guidelines
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 4, 5, and 6) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 4, 5, and 6) {5061, 5073}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
Testing and Adjusting
Piston Pump and Motor Maximum Displacement - Test
D6K2 and D6K Track-Type Tractor Systems
Bench Test Procedures
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Disassembly and Assembly
Piston Motor (Hydrostatic) - Remove and Install
D6K2 Track-Type Tractor Power Train
Piston Motor (Hydrostatic) - Disassemble
D6K2 Track-Type Tractor Power Train
Piston Motor (Hydrostatic) - Assemble
D6K2 Track-Type Tractor Power Train

Caterpillar Parts SIS Catalog D6K2 :

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