POWER TRAIN
VALVE GP-MODULATINGVALVE GP-RELIEF
AXLE GP
FRAME AND BODY
BUMPER GPPOWER TRAIN
VALVE GP-MODULATING#SEBC13180110
350-3913: VALVE GP-MODULATING
350-3913 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
#SEBC13180111
385-4432: VALVE GP-MODULATING
385-4432 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6V-3965 | [1] | FITTING (QUICK DISCONNECT) | |
| 2. | 323-9531 | [1] | COIL AS (24-VOLT) | |
| 3. | 214-7568 | [1] | SEAL-O-RING | |
| 4. | 164-2108 | [1] | WASHER (13.03X25.4X2.38-MM THK) | |
| 5. | 218-2373 | [1] | NUT (1/2-28-THD) | |
| PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY | ||||
#SEBC13180112
425-4565: VALVE GP-MODULATING
425-4565 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
#SEBC13180113
425-6734: VALVE GP-MODULATING
425-6734 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
S/N SDR570-UP; CGS646-UP
24-VOLT
PART OF 244-3114 VALVE GP-MODULATING
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6V-3965 | [1] | FITTING (QUICK DISCONNECT) | |
| 2. | 323-9531 | [1] | COIL AS (24-VOLT) | |
| 3. | 214-7568 | [1] | SEAL-O-RING | |
| 4. | 164-2108 | [1] | WASHER (13.03X25.4X2.38-MM THK) | |
| 5. | 218-2373 | [1] | NUT (1/2-28-THD) | |
| PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY | ||||
#SEBC13180114
468-3266: VALVE GP-MODULATING
468-3266 VALVE GP-MODULATING
S/N BNH1-UP
TORQUE CONVERTER
FIELD REPLACEMENT FOR @@@@@311-6364@@@@@
S/N BNH1-UP
TORQUE CONVERTER
FIELD REPLACEMENT FOR @@@@@311-6364@@@@@
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6V-3965 | [1] | FITTING (QUICK DISCONNECT) | |
| 2. | 187-2710 | [1] | WASHER | |
| 3. | 218-2373 | [1] | NUT (1/2-28-THD) | |
| 4. | 214-7568 | [1] | SEAL-O-RING | |
| 5. | 322-5036 | [1] | COIL AS | |
| 102-8803 | [1] | KIT-RECEPTACLE (3-PIN) | ||
| (INCLUDES RECEPTACLE AS & WEDGE) | ||||
| 1S-9593 | [2] | STRAP-CABLE | ||
| 3E-3371 | [1] | WEDGE-RECEPTACLE LOCK (3-PIN) | ||
| 8T-8729 | [2] | PIN-CONNECTOR (16-GA TO 18-GA) | ||
| 8T-8737 | [1] | PLUG-SEAL | ||
#SEBC13180115
134-5053: VALVE GP-RELIEF
134-5053 VALVE GP-RELIEF -TRANSMISSION HYDRAULIC CONTROL-TRANSMISSION HYDRAULIC CONTROL
S/N SDR1-UP; CGS1-UP
PART OF 209-9258 CONTROL GP-TRANSMISSION, 165-3621 CONTROL GP-TRANSMISSION HYD
S/N SDR1-UP; CGS1-UP
PART OF 209-9258 CONTROL GP-TRANSMISSION, 165-3621 CONTROL GP-TRANSMISSION HYD
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 133-4772 | [1] | MANIFOLD | |
| 2. | 133-0772 | [1] | PLATE | |
| 3. | 134-1265 | [1] | ELBOW | |
| 4. | 6Y-4638 | [1] | PLUG-HEX SOCKET (1-5/16-12-THD) | |
| 5. | 7M-8485 | [1] | SEAL-O-RING | |
| 6. | 106-9212 | [1] | SPRING | |
| 7. | 133-6567 | [1] | SPOOL AS-RELIEF | |
| 8. | 109-3969 | [1] | STOP | |
| 9. | 5B-3180 | [1] | NUT (5/16-18-THD) | |
| 10. | 9M-1974 | [6] | WASHER-HARD (8.8X16X2-MM THK) | |
| 11. | 4M-5905 | [1] | SCREW-ADJUSTMENT (5/16-18X1-IN) | |
| 12. | 9W-5568 | [1] | SLUG | |
| 13. | 2S-0696 | [1] | DOWEL | |
| 14. | 6P-4943 | [1] | SPOOL-RATIO | |
| 15. | 5S-7816 | [1] | SLUG | |
| 16. | 2S-4872 | [1] | STOP | |
| 17. | 8H-9189 | [1] | DOWEL | |
| 18. | 8L-5922 | [1] | BOLT-LOCKING (5/16-18X0.563-IN) | |
| 19. | 141-8466 | [1] | RETAINER | |
| 20. | 8M-8162 | [3] | BOLT-12 POINT HEAD (5/16-18X1.5-IN) | |
| 21. | 8H-8769 | [1] | BOLT (5/16-18X4.25-IN) | |
| 22. | 1T-0416 | [6] | BOLT (5/16-18X0.75-IN) | |
| 24. | 1N-5999 | [2] | PLUG-O-RING | |
| 25. | 7J-0204 | [2] | SEAL-O-RING | |
| 26. | 1P-7404 | [1] | EYEBOLT (5/16-18X1.15-IN) | |
| 27. | 5S-0003 | [1] | NUT (5/16-18-THD) | |
| 28. | 6P-4978 | [1] | SPRING |
#SEBC13180116
189-7782: WHEEL & FINAL DRIVE GP
189-7782 WHEEL & FINAL DRIVE GP -HIGH TEMPERATURE
S/N BNH1-1391; 2TW1-UP
CUSTOM
PART OF 189-7781 AXLE GP-FIXED, 189-7783 AXLE GP-OSCILLATING
S/N BNH1-1391; 2TW1-UP
CUSTOM
PART OF 189-7781 AXLE GP-FIXED, 189-7783 AXLE GP-OSCILLATING
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6D-0692 | [1] | SEAL-O-RING | |
| 2. | 147-6457 | [1] | SPINDLE | |
| 3. | 3K-0360 | [1] | SEAL-O-RING | |
| 4. | 9S-8005 | [1] | PLUG (3/4-16-THD) | |
| 5. | 3T-8500 | [1] | SEAL GP-DUO-CONE | |
| 6. | 148-1546 | [1] | CONE | |
| 7. | 5D-6298 | [1] | CUP-BEARING | |
| 8. | 137-8845 | [1] | WHEEL | |
| 9. | 137-8846 | [1] | HUB AS | |
| 137-8837 | [1] | BUSHING | ||
| 10. | 8C-8992 M | [8] | BOLT-LOCKING (M12X1.75X30-MM) | |
| 11. | 5T-7676 | [4] | RETAINER | |
| 12. | 137-8843 | [1] | GEAR-RING (81-TEETH) | |
| 13. | 9H-6832 | [1] | SEAL-O-RING | |
| 14. | 192-0816 | [3] | GEAR-PLANETARY (30 TEETH) | |
| 15. | 2R-0098 | [1] | SEAL-O-RING | |
| 16. | 239-4258 | [3] | BUSHING | |
| 18. | 224-2352 | [3] | SHAFT | |
| 19. | 6T-5545 | [3] | DOWEL | |
| 20. | 239-4259 | [6] | WASHER-THRUST | |
| 21. | 200-0818 | [1] | COVER | |
| 22. | 192-0815 | [1] | GEAR-SUN (18 TEETH) | |
| 23. | 137-8849 | [1] | PLATE | |
| 24. | 200-0819 | [1] | CARRIER-PLANETARY | |
| 25. | 163-4572 | [1] | PLATE-BEARING | |
| 26. | 175-2853 B | [1] | SHIM PACK (INCLUDES 14-SHIMS) | |
| 27. | 6V-8281 | [1] | CUP-BEARING | |
| 28. | 143-4512 | [1] | CONE | |
| 29. | 9X-2404 M | [10] | BOLT-SOCKET HEAD (M20X2.5X90-MM) | |
| 30. | 8T-3282 | [10] | WASHER-HARD (22X35X3.5-MM THK) | |
| 31. | 6V-3668 M | [11] | BOLT (M12X1.75X30-MM) | |
| 32. | 8T-4194 M | [4] | BOLT (M12X1.75X50-MM) | |
| 33. | 8M-3837 | [1] | PLUG-MAGNETIC (CASE DRAIN) | |
| 34. | 5F-1678 | [1] | SEAL-O-RING | |
| 35. | 5K-7696 | [1] | PLUG | |
| 36. | 3J-1907 | [1] | SEAL-O-RING | |
| 37. | 6V-1746 | [2] | DOWEL | |
| 38. | 1U-8846 B | SEALANT-GASKET | ||
| 39. | 185-3653 | [1] | WASHER-THRUST | |
| 40. | 1S-3889 | [1] | WASHER | |
| B | USE AS REQUIRED | |||
| M | METRIC PART | |||
| R | REMANUFACTURED PART MAY BE AVAILABLE | |||
#SEBC13180117
189-7782: WHEEL & FINAL DRIVE GP
189-7782 WHEEL & FINAL DRIVE GP -HIGH TEMPERATURE
S/N BNH1392-UP; 2TW1-UP
CUSTOM
PART OF 189-7781 AXLE GP-FIXED, 189-7783 AXLE GP-OSCILLATING
S/N BNH1392-UP; 2TW1-UP
CUSTOM
PART OF 189-7781 AXLE GP-FIXED, 189-7783 AXLE GP-OSCILLATING
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6D-0692 | [1] | SEAL-O-RING | |
| 2. | 147-6457 | [1] | SPINDLE | |
| 3. | 3K-0360 | [1] | SEAL-O-RING | |
| 4. | 9S-8005 | [1] | PLUG (3/4-16-THD) | |
| 5. | 3T-8500 | [1] | SEAL GP-DUO-CONE | |
| 6. | 148-1546 | [1] | CONE | |
| 7. | 5D-6298 | [1] | CUP-BEARING | |
| 8. | 366-2153 C | [1] | WHEEL | |
| 9. | 137-8846 | [1] | HUB AS | |
| 9A. | 137-8837 | [1] | BUSHING | |
| 10. | 8C-8992 M | [8] | BOLT-LOCKING (M12X1.75X30-MM) | |
| 11. | 5T-7676 | [4] | RETAINER | |
| 12. | 137-8843 | [1] | GEAR-RING (81-TEETH) | |
| 13. | 9H-6832 | [1] | SEAL-O-RING | |
| 14. | 237-0974 | [3] | GEAR-PLANETARY (30 TEETH) | |
| 15. | 2R-0098 | [1] | SEAL-O-RING | |
| 16. | 239-4258 | [3] | BUSHING | |
| 18. | 297-3031 | [3] | SHAFT | |
| 19. | 6T-5545 | [3] | DOWEL | |
| 20. | 239-4259 | [6] | WASHER-THRUST | |
| 21. | 200-0818 | [1] | COVER | |
| 22. | 192-0815 | [1] | GEAR-SUN (18 TEETH) | |
| 23. | 137-8849 | [1] | PLATE | |
| 24. | 200-0819 | [1] | CARRIER-PLANETARY | |
| 25. | 163-4572 | [1] | PLATE-BEARING | |
| 26. | 175-2853 B | [1] | SHIM PACK (INCLUDES 14-SHIMS) | |
| 27. | 6V-8281 | [1] | CUP-BEARING | |
| 28. | 143-4512 | [1] | CONE | |
| 29. | 9X-2404 M | [10] | BOLT-SOCKET HEAD (M20X2.5X90-MM) | |
| 30. | 8T-3282 | [10] | WASHER-HARD (22X35X3.5-MM THK) | |
| 31. | 6V-3668 M | [11] | BOLT (M12X1.75X30-MM) | |
| 32. | 8T-4194 M | [4] | BOLT (M12X1.75X50-MM) | |
| 33. | 8M-3837 | [1] | PLUG-MAGNETIC (CASE DRAIN)(FINAL DRIVE, OIL FILL) | |
| 34. | 5F-1678 | [1] | SEAL-O-RING | |
| 35. | 5K-7696 | [1] | PLUG | |
| 36. | 3J-1907 | [1] | SEAL-O-RING | |
| 37. | 6V-1746 | [2] | DOWEL | |
| 38. | 1U-8846 B | SEALANT-GASKET | ||
| 39. | 185-3653 | [1] | WASHER-THRUST | |
| 40. | 1S-3889 | [1] | WASHER | |
| B | USE AS REQUIRED | |||
| C | CHANGE FROM PREVIOUS TYPE | |||
| M | METRIC PART | |||
| R | REMANUFACTURED PART MAY BE AVAILABLE | |||
#SEBC13180118
189-7559: BUMPER AS-REAR
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | [1] | PLATE AS | ||
| 5G-6787 | [1] | BOSS | ||
| 9C-4935 | [1] | PLATE | ||
| 9R-2613 M | [2] | BOSS-WELD (M10X1.5X25-MM) | ||
| 2. | [1] | PLATE AS | ||
| 5G-6787 | [1] | BOSS | ||
| 9R-2613 M | [6] | BOSS-WELD (M10X1.5X25-MM) | ||
| 3. | [1] | PLATE AS | ||
| 8T-3597 M | [12] | NUT-WELD (M12X1.75-THD)(`) | ||
| 9R-2613 M | [3] | BOSS-WELD (M10X1.5X25-MM) | ||
| 4. | [1] | PLATE AS | ||
| 8T-3597 M | [12] | NUT-WELD (M12X1.75-THD) | ||
| 5. | [1] | PLATE AS | ||
| 8T-3597 M | [2] | NUT-WELD (M12X1.75-THD) | ||
| 9R-2613 M | [3] | BOSS-WELD (M10X1.5X25-MM) | ||
| 6. | 173-5986 | [1] | TREAD (RH) | |
| 7. | 173-5987 | [1] | TREAD (LH) | |
| 8. | 9R-2613 M | [3] | BOSS-WELD (M10X1.5X25-MM) | |
| 9. | 6V-1635 | [18] | RIVET-POP | |
| M | METRIC PART | |||
#SEBC13180119
189-7560: BUMPER GP-REAR
189-7560 BUMPER GP-REAR
S/N BNH1-UP; 2TW1-UP
CUSTOM
PART OF 2Q-8448, 2Q-8449, 2Q-8450, 2Q-8451 CONVERSION AR-MACHINE, 2Q-8461 HANDLER AR-BLOCK, 2Q-7750 STEEL MILL AR
S/N BNH1-UP; 2TW1-UP
CUSTOM
PART OF 2Q-8448, 2Q-8449, 2Q-8450, 2Q-8451 CONVERSION AR-MACHINE, 2Q-8461 HANDLER AR-BLOCK, 2Q-7750 STEEL MILL AR
Parts for your 988G WHEEL LOADER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 6M-1622 | [2] | DOWEL | |
| 2. | 136-5049 Y | [1] | DRAWBAR GP | |
| 3. | 189-7559 Y | [1] | BUMPER AS-REAR | |
| 4. | 192-8848 | [1] | PLATE AS | |
| 6V-2370 | [13] | RIVET-POP | ||
| 5. | 5P-1076 | [7] | WASHER-HARD (13.5X30X4-MM THK) | |
| 6. | 8C-8723 M | [6] | BOLT (M30X3.5X80-MM) | |
| 7. | 8T-4139 M | [5] | BOLT (M12X1.75X30-MM) | |
| 8. | 8T-4183 M | [2] | BOLT (M12X1.75X40-MM) | |
| 9. | 9X-8258 | [6] | WASHER (33X56X6-MM THK) | |
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
Information:
POWER TRAIN
VALVE GP-MODULATING
Operation and Maintenance Manual
Special Instruction
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Technical Information Bulletin
Modulating Valve Connectors May Not Be Fully Seated
Modulating Valve Connectors May Not Be Fully Seated
Modulating Valve Connectors May Not Be Fully Seated
ECPC Valves May Fail on Cat Transmission Systems {3073, 3139, 3167}
ECPC Valves May Fail on Cat Transmission Systems {3073, 3139, 3167}
ECPC Valves May Fail on Cat Transmission Systems {3073, 3139, 3167}
Specifications
Systems Operation
Testing and Adjusting
Fill Time for the Transmission Clutch (Caterpillar Monitoring System) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Fill Time for the Transmission Clutch (Electronic Technician) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Fill Pressure for the Impeller Clutch of the Torque Converter (Electronic Technician) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Engagement Pressure for the Transmission Clutch (Electronic Technician) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Engagement Pressure for the Lockup Clutch of the Torque Converter (Electronic Technician) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Fill Pressure for the Impeller Clutch of the Torque Converter (Caterpillar Monitoring System) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Engagement Pressure for the Lockup Clutch of the Torque Converter (Caterpillar Monitoring System) - Calibrate
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Bench Test Procedures
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Bench Test Procedure for a 988G and 988H Wheel Loader Transmission {3030, 3073, 3139}
Troubleshooting
Disassembly and Assembly
Modulating Valve (Torque Converter Impeller Clutch) - Remove and Install
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Modulating Valve (Torque Converter Lockup Clutch) - Remove and Install
988G Wheel Loader Power Train
988G Wheel Loader Power Train
Service Magazine
Caterpillar Parts SIS Catalog 988G :
Truck sale:
Caterpillar 988G/H HIGH LIFT CYLINDER AND BUCKET, bucket, Construction
- bucket
WILLIAM ADAMS PTY. LTD.
- bucket
WILLIAM ADAMS PTY. LTD.



