STEERING SYSTEM
PUMP GPBRAKING SYSTEM
PUMP GPCONTROL GP
STEERING SYSTEM
LINES GPSTEERING SYSTEM
PUMP GP#M00847370720
398-8976: PUMP GP-GEAR
398-8976 PUMP GP-GEAR -STEERING
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY | ||||
| AVAILABLE REPAIR KIT(S): | ||||
| 135-3489 | [1] | KIT-SEAL | ||
| (INCLUDES PART(S) MARKED J ON GRAPHIC) | ||||
| (INCLUDES SEAL SHAFT, O-RINGS, E-SEALS, BACK-UP RINGS & RETAINING RING) | ||||
#M00847370721
392-0757: PUMP GP-PISTON
392-0757 PUMP GP-PISTON -FAN
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Type 1
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Type 1
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 371-7952 Y | [1] | ROTATING GP-PUMP (PISTON) | |
| 2. | 290-0824 | [1] | SWASHPLATE | |
| 3. | 244-7353 | [1] | SHAFT | |
| 4. | 430-7539 | [1] | COUPLER | |
| 5. | 247-3761 | [1] | SPACER (45X3-MM THK) | |
| 6. | 1B-3908 | [1] | CONE-BEARING | |
| 7. | 1B-3909 | [1] | CUP-BEARING | |
| 8. | 6Y-2736 | [1] | CONE-BEARING | |
| 9. | 6Y-2737 | [1] | CUP-BEARING | |
| 10. | 176-7507 | [2] | BEARING-CRADLE | |
| 11. | 203-1095 | [1] | SEAL | |
| 12. | 107-3114 | [1] | SEAL-O-RING | |
| 13. | 5P-9186 | [4] | SEAL-O-RING | |
| 14. | 227-5904 | [1] | SEAL-O-RING | |
| 15. | 095-0942 | [1] | RING-RETAINING | |
| 16. | 7Y-0467 M | [4] | BOLT-SOCKET HEAD (M18X2.5X55-MM) | |
| 17. | 3D-2824 | [1] | SEAL-O-RING | |
| 18. | 9S-4183 | [1] | PLUG (1-1/16-12-THD) | |
| 19. | 120-4394 | [1] | PLUG-BREAK OFF | |
| 20. | 7X-2438 | [1] | DOWEL | |
| 21. | 371-7953 | [1] | PLATE | |
| 22. | 176-7512 | [1] | SPRING | |
| 23. | 176-7517 | [1] | PISTON-CONTROL | |
| 24. | 176-7513 | [1] | PLUNGER | |
| 25. | 176-7511 | [1] | GUIDE-PLUNGER | |
| 26. | 176-7692 | [1] | SLEEVE-STOP | |
| 27. | 176-7518 | [1] | GUIDE-PISTON | |
| 28. | 440-0156 CY | [1] | VALVE GP-PUMP CONTROL (PRESSURE, FLOW COMPENSATOR) | |
| 29. | 280-7870 | [1] | GASKET | |
| 30. | 8T-8442 M | [4] | BOLT-SOCKET HEAD (M6X1X30-MM) | |
| C | CHANGE FROM PREVIOUS TYPE | |||
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
#M00847370722
392-0757: PUMP GP-PISTON
392-0757 PUMP GP-PISTON -FAN
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Type 2
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Type 2
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 371-7952 Y | [1] | ROTATING GP-PUMP (PISTON) | |
| 2. | 290-0824 | [1] | SWASHPLATE | |
| 3. | 244-7353 | [1] | SHAFT | |
| 4. | 430-7539 | [1] | COUPLER | |
| 5. | 247-3761 | [1] | SPACER (45X3-MM THK) | |
| 6. | 1B-3908 | [1] | CONE-BEARING | |
| 7. | 1B-3909 | [1] | CUP-BEARING | |
| 8. | 6Y-2736 | [1] | CONE-BEARING | |
| 9. | 6Y-2737 | [1] | CUP-BEARING | |
| 10. | 176-7507 | [2] | BEARING-CRADLE | |
| 11. | 203-1095 | [1] | SEAL | |
| 12. | 107-3114 | [1] | SEAL-O-RING | |
| 13. | 5P-9186 | [4] | SEAL-O-RING | |
| 14. | 227-5904 | [1] | SEAL-O-RING | |
| 15. | 095-0942 | [1] | RING-RETAINING | |
| 16. | 7Y-0467 M | [4] | BOLT-SOCKET HEAD (M18X2.5X55-MM) | |
| 17. | 3D-2824 | [1] | SEAL-O-RING | |
| 18. | 9S-4183 | [1] | PLUG (1-1/16-12-THD) | |
| 19. | 120-4394 | [1] | PLUG-BREAK OFF | |
| 20. | 7X-2438 | [1] | DOWEL | |
| 21. | 371-7953 | [1] | PLATE | |
| 22. | 176-7512 | [1] | SPRING | |
| 23. | 176-7517 | [1] | PISTON-CONTROL | |
| 24. | 176-7513 | [1] | PLUNGER | |
| 25. | 176-7511 | [1] | GUIDE-PLUNGER | |
| 26. | 176-7692 | [1] | SLEEVE-STOP | |
| 27. | 176-7518 | [1] | GUIDE-PISTON | |
| 28. | 340-2110 CY | [1] | VALVE GP-PUMP CONTROL (PRESSURE, FLOW COMPENSATOR) | |
| 29. | 280-7870 | [1] | GASKET | |
| 30. | 8T-8442 M | [4] | BOLT-SOCKET HEAD (M6X1X30-MM) | |
| C | CHANGE FROM PREVIOUS TYPE | |||
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
#M00847370723
395-0834: PUMP GP-PISTON
395-0834 PUMP GP-PISTON -STEERING
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6E-1024 Y | [1] | VALVE GP-PUMP CONTROL (PRESSURE, FLOW COMPENSATOR) | |
| 2. | 179-6928 | [1] | PISTON | |
| 3. | 145-3166 | [1] | VALVE GP-PUMP CONTROL (PRESSURE COMPENSATOR) | |
| 5I-4306 | [1] | SPRING | ||
| 145-3791 | [1] | PISTON | ||
| 145-3792 B | [1] | ROD (128.2-MM LG) | ||
| -OR- | ||||
| 145-3793 B | [1] | ROD (128-MM LG) | ||
| -OR- | ||||
| 145-3794 B | [1] | ROD (127.8-MM LG) | ||
| 4. | 117-5716 | [4] | PIN | |
| 5. | 178-4013 | [1] | IMPELLER | |
| 6. | 145-3169 | [2] | PIN-THREADED | |
| 7. | 145-3171 | [2] | LOCKNUT-SEAL | |
| 8. | 9T-3928 | [4] | PLUG AS | |
| (EACH INCLUDES) | ||||
| 187-8001 | [1] | SEAL | ||
| 9. | 9X-2404 M | [4] | BOLT-SOCKET HEAD (M20X2.5X90-MM) | |
| 10. | 8F-6230 | [1] | SEAL-O-RING | |
| 11. | 7M-8485 | [3] | SEAL-O-RING | |
| 12. | 9S-9334 | [3] | PLUG (1-5/16-12-THD) | |
| 13. | 170-9900 | [2] | PIN | |
| 14. | 258-0068 | [2] | RING-RETAINING | |
| 15. | 3J-1907 | [6] | SEAL-O-RING | |
| 16. | 9S-8004 | [6] | PLUG (9/16-18-THD) | |
| 17. | 170-9907 | [1] | PLUG | |
| 18. | 293-3250 | [1] | BARREL AS | |
| 19. | 292-2697 | [1] | PLATE-CONTROL | |
| 20. | 145-3771 | [1] | CRADLE | |
| 21. | 236-1835 | [1] | SHAFT-DRIVE | |
| 22. | 145-3773 | [4] | ROLLER | |
| 23. | 6E-3840 | [4] | ROD | |
| 24. | 145-3774 | [1] | LINER-BEARING | |
| 25. | 145-3775 | [2] | RETAINER | |
| 26. | 5I-4275 | [1] | BEARING-ROLLER | |
| 27. | 145-3776 | [1] | CAGE | |
| 28. | 095-0927 | [1] | RING-RETAINING | |
| 29. | 124-9913 | [2] | SEAL-SHAFT | |
| 30. | 2J-8163 | [1] | SEAL-O-RING | |
| 31. | 5H-3252 | [1] | SEAL-O-RING | |
| 32. | 8T-8442 M | [4] | BOLT-SOCKET HEAD (M6X1X30-MM) | |
| 33. | 4I-5957 | [4] | RING | |
| 34. | 6V-5683 M | [4] | BOLT (M6X1X16-MM) | |
| 35. | 5I-4374 | [1] | BEARING-ROLLER | |
| 36. | 120-4394 | [7] | PLUG-BREAK OFF | |
| 37. | 5I-4341 | [2] | DOWEL | |
| 38. | 2Y-5578 | [1] | PIN | |
| 39. | 179-6919 | [1] | ORIFICE | |
| 40. | 144-9102 | [1] | ORIFICE | |
| 41. | 258-4470 | [1] | COUPLING | |
| 42. | 2H-3935 | [1] | SEAL-O-RING | |
| 43. | 501-1419 | [2] | SEAL-O-RING | |
| 44. | 6V-8201 M | [4] | BOLT-SOCKET HEAD (M16X2X45-MM) | |
| 45. | 8T-8441 M | [8] | BOLT-SOCKET HEAD (M12X1.75X25-MM) | |
| 46. | 087-4772 | [2] | PLUG-O-RING | |
| 47. | 241-6916 | [1] | PIN-THREADED | |
| 48. | 145-3780 | [1] | ROD | |
| 49. | 5I-4303 | [1] | SPRING | |
| 50. | 145-3783 | [1] | SLEEVE | |
| 51. | 3E-8025 M | [5] | BOLT-SOCKET HEAD (M8X1.25X50-MM) | |
| B | USE AS REQUIRED | |||
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
#M00847370724
398-8977: PUMP GP-PISTON
398-8977 PUMP GP-PISTON -BRAKE, STEERING
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
S/N M4R1-UP
PART OF 390-6485 PUMP & MTG GP-STEERING & FAN
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 189-4710 Y | [1] | ROTATING GP-PUMP | |
| 2. | 379-5187 | [1] | SPRING | |
| 3. | 333-7840 | [1] | STOP | |
| 4. | 5W-4819 | [1] | SEAL-O-RING | |
| 5. | 198-5351 | [1] | PLUG | |
| 6. | 333-7843 | [1] | SPRING | |
| 7. | 189-4716 | [1] | SHIM (2.5-MM THK) | |
| 8. | 333-7844 | [1] | RING | |
| 9. | 203-8609 | [1] | CUP-BEARING | |
| 10. | 105-3035 | [1] | CONE-BEARING | |
| 11. | 189-4718 | [1] | BEARING | |
| 12. | 333-7845 | [1] | BEARING-CRADLE (LH) | |
| 13. | 333-7846 | [1] | BEARING-CRADLE (RH) | |
| 14. | 6R-7943 M | [2] | SCREW (M5X0.8X15-MM) | |
| 15. | 189-4720 | [1] | SEAL-SHAFT | |
| 16. | 204-3334 | [1] | SEAL-O-RING | |
| 17. | 8T-9597 | [1] | RING-RETAINING | |
| 18. | 6V-8337 M | [4] | BOLT-SOCKET HEAD (M8X1.25X35-MM) | |
| 19. | 123-9769 | [2] | PLUG | |
| 20. | 112-4640 | [1] | PIN | |
| 21. | 189-4726 | [1] | PLATE | |
| 22. | 8T-8442 M | [4] | BOLT-SOCKET HEAD (M6X1X30-MM) | |
| 23. | 280-7870 | [1] | GASKET | |
| 24. | 421-1062 Y | [1] | VALVE GP-PUMP CONTROL (PISTON) | |
| 25. | 8T-7525 | [1] | SEAL-O-RING | |
| 26. | 416-8814 | [1] | SWASHPLATE | |
| 27. | 434-8956 | [1] | SHAFT | |
| 28. | 416-8817 | [1] | PISTON-CONTROL | |
| 29. | [1] | COUPLER | ||
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
#M00847370725
189-4710: ROTATING GP-PUMP
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 189-4724 | [1] | KIT-PISTON | |
| (INCLUDES 9 SETS OF PISTON ASSEMBLY) | ||||
| 2. | 189-4725 | [1] | BARREL | |
| 3. | 189-4726 | [1] | PLATE | |
| 4. | 189-4727 | [1] | PLATE | |
| 5. | 189-4728 | [1] | BEARING | |
| 6. | 189-4729 | [1] | SPRING | |
| 7. | 189-4730 | [3] | PIN | |
| 8. | 8C-3312 | [1] | RING-RETAINING | |
| 9. | 189-4732 | [1] | SPACER (17.6X26.5X2-MM THK) | |
#M00847370726
371-7952: ROTATING GP-PUMP
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS#M00847370727
288-5769: SCREEN GP-HIGH PRESSURE
288-5769 SCREEN GP-HIGH PRESSURE
S/N M4R1-UP
PART OF 390-6581 LINES GP-STEERING
S/N M4R1-UP
PART OF 390-6581 LINES GP-STEERING
#M00847370728
418-8181: STOP GP-STEERING
418-8181 STOP GP-STEERING
S/N M4R1-UP
PART OF 386-8363 VALVE & LINES GP-STEERING NEUT
S/N M4R1-UP
PART OF 386-8363 VALVE & LINES GP-STEERING NEUT
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS#M00847370729
386-8363: VALVE & LINES GP-STEERING NEUT
386-8363 VALVE & LINES GP-STEERING NEUT
S/N M4R1-UP
PART OF 386-8330 HYDRAULIC AR
S/N M4R1-UP
PART OF 386-8330 HYDRAULIC AR
Parts for your 844K WHEEL DOZER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 111-7775 Y | [1] | VALVE GP-CHECK (STEERING QUAD) | |
| 2. | 116-9331 | [1] | JUNCTION BLOCK | |
| 3. | 143-2529 I | [1] | HOSE AS | |
| 4. | 184-6690 I | [1] | HOSE AS | |
| 5. | 200-6345 | [1] | SADDLE-MOUNTING (DUAL SWIVEL) | |
| 6. | 212-6989 I | [2] | HOSE AS | |
| 7. | 237-6376 I | [1] | HOSE AS | |
| 8. | 246-4478 I | [1] | HOSE AS | |
| 9. | 283-3516 I | [1] | HOSE AS | |
| 10. | 296-5662 Y | [2] | VALVE GP-STEERING NEUTRALIZER (HMU) | |
| 11. | 316-4378 I | [1] | HOSE AS | |
| 12. | 345-7870 I | [1] | HOSE AS | |
| 13. | 390-6624 | [1] | BRACKET AS | |
| 14. | 418-8181 Y | [1] | STOP GP-STEERING | |
| 15. | 444-7678 | [2] | TUBE AS | |
| 16. | 444-7679 | [1] | BRACKET AS | |
| 17. | 148-8318 | [3] | CONNECTOR AS | |
| (EACH INCLUDES) | ||||
| 3K-0360 | [1] | SEAL-O-RING | ||
| 6V-8397 | [1] | SEAL-O-RING | ||
| 6V-8634 | [1] | CONNECTOR | ||
| 18. | 148-8336 | [2] | CONNECTOR AS | |
| (EACH INCLUDES) | ||||
| 3J-1907 | [1] | SEAL-O-RING | ||
| 6V-8397 | [1] | SEAL-O-RING | ||
| 6V-8636 | [1] | CONNECTOR | ||
| 19. | 148-8340 | [1] | CONNECTOR AS | |
| 3K-0360 | [1] | SEAL-O-RING | ||
| 6V-8398 | [1] | SEAL-O-RING | ||
| 6V-8639 | [1] | CONNECTOR | ||
| 20. | 148-8364 | [1] | ELBOW AS | |
| 3K-0360 | [1] | SEAL-O-RING | ||
| 6V-8398 | [1] | SEAL-O-RING | ||
| 6V-8625 | [1] | ELBOW | ||
| 21. | 148-8374 | [5] | ELBOW AS | |
| (EACH INCLUDES) | ||||
| 3K-0360 | [1] | SEAL-O-RING | ||
| 6V-8397 | [1] | SEAL-O-RING | ||
| 6V-8723 | [1] | ELBOW | ||
| 22. | 148-8378 | [4] | ELBOW AS | |
| (EACH INCLUDES) | ||||
| 3J-1907 | [1] | SEAL-O-RING | ||
| 6V-8397 | [1] | SEAL-O-RING | ||
| 6V-8724 | [1] | ELBOW | ||
| 23. | 148-8427 | [1] | TEE AS | |
| 6V-8398 | [3] | SEAL-O-RING | ||
| 8T-6895 | [1] | TEE-UNION | ||
| 24. | 148-8444 | [1] | TEE AS-SWIVEL | |
| 6V-8398 | [2] | SEAL-O-RING | ||
| 6V-9837 | [1] | TEE-SWIVEL | ||
| 25. | 204-2281 | [2] | STRAP-CABLE | |
| 26. | 6V-9169 | [1] | NUT (13/16-16-THD) | |
| 27. | 8T-4121 | [8] | WASHER-HARD (11X21X2.5-MM THK) | |
| 28. | 8T-4136 M | [2] | BOLT (M10X1.5X25-MM) | |
| 29. | 8T-4139 M | [6] | BOLT (M12X1.75X30-MM) | |
| 30. | 8T-4223 | [6] | WASHER-HARD (13.5X25.5X3-MM THK) | |
| 31. | 8T-4224 | [2] | WASHER-HARD (8.8X16X2-MM THK) | |
| 32. | 8T-6466 M | [6] | BOLT (M10X1.5X60-MM) | |
| 33. | 8T-6870 M | [2] | BOLT (M8X1.25X70-MM) | |
| I | REFER TO HYDRAULIC INFORMATION SYSTEM | |||
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||