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6P5140 NEUTRALIZER, SELECTOR AND PRESSURE CONTROL VALVE GROUP Serial No. 50W1 to 3605, 3608, 3610 to 3612, 3615, 3616, 3618 to 3622, 3624 to 3634, 3637, 3640 and 50W3648 inclusive. Part of 6P5139 Control Group shown on Page 114. 6P5141 and 6P5142 Valve parts are shown on Pages 115B, 116 and 116A 988B


POWER TRAIN
VALVE GP-CONTROL
VALVE GP-NEUTRALIZER
VALVE GP-SELECTOR & PRESS CONT
LOCK GP-TRANSMISSION CONTROL

WHEEL LOADER 988B WHEEL LOADER 50W
 988B WHEEL LOADER 50W00001-06040 (MACHINE) POWERED BY 3408 ENGINE SEBP1079 988B 50W   (1976)

POWER TRAIN

VALVE GP-CONTROL
VALVE GP-CONTROL
6P-5140 VALVE GP-CONTROL
VALVE GP-CONTROL
6P-5140 VALVE GP-CONTROL
VALVE GP-CONTROL
6P-5140 VALVE GP-CONTROL
 

#SEBP10790380
 

6P-5140: VALVE GP-CONTROL

6P5140 NEUTRALIZER, SELECTOR AND PRESSURE CONTROL VALVE GROUP
Serial No. 50W1 to 3605, 3608, 3610 to 3612, 3615, 3616, 3618 to 3622, 3624 to
3634, 3637, 3640 and 50W3648 inclusive. Part of 6P5139 Control Group shown on
Page 114. 6P5141 and 6P5142 Valve parts are shown on Pages 115B, 116 and 116A
c209814 SEBP1079
6P5140 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6P-5142 Y [1] VALVE GROUP  
    (Separate Illustration)
2. 5M-6214 [6] PLUG  
3. 5L-1761 [26] BOLT  
  9M-1974 [26] WASHER  
4. 6P-4498 [1] MANIFOLD  
5. 6P-4499 [1] PLATE  
6. 6P-5141 Y [1] VALVE GROUP  
    (Separate Illustration)
  Y   SEPARATE ILLUSTRATION
 

#SEBP10790381
 

6P-5140: VALVE GP-CONTROL

6P5140 NEUTRALIZER, SELECTOR AND PRESSURE CONTROL VALVE GROUP
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE
VEHICLE SERIAL NO. Vehicle Serial No. 50W3606, 3607, 3609, 3613, 3614, 3617,
3623, 3635, 3636, 3638, 3639, 3641 to 3647 and 50W3649 to 50W4353 inclusive
Transmission Serial No. 2MA1 to 2MA296 inclusive. Part of 6P5139 Control Group shown
on Page 114. 6P5141 and 7G9570 Valve parts are shown on Pages 115B and 116B
c224844 SEBP1079
6P5140 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7G-9570 YC [1] VALVE GROUP  
    (Separate Illustration)
2. 5M-6214 C [4] PLUG  
3. 5L-1761 [26] BOLT  
  9M-1974 [26] WASHER  
4. 6P-4498 [1] MANIFOLD  
5. 7G-5680 C [1] PLATE  
6. 6P-5141 Y [1] VALVE GROUP  
    (Separate Illustration)
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10790382
 

6P-5140: VALVE GP-CONTROL

6P5140 NEUTRALIZER, SELECTOR AND PRESSURE CONTROL VALVE GROUP
Transmission Serial No. 2MA297-Up. Part of 6P5139 Transmission Hydraulic Control
Group shown on Page 114. 9G6598 and 7G9570 Valve parts are shown on Pages
115B and 116B
c227565 SEBP1079
6P5140 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7G-9570 Y [1] VALVE GP-SELECTOR & PRESS CONT  
2. 5M-6214 [4] PLUG-PIPE  
3. 5L-1761 [26] BOLT  
  9M-1974 [26] WASHER  
4. 6P-4498 [1] MANIFOLD-TOP  
5. 7G-5680 [1] PLATE-DIVIDER  
6. 9G-6598 CY [1] VALVE GP-NEUTRALIZER  
  C   CHANGE FROM PREVIOUS TYPE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10790383
 

6P-5141: VALVE GP-NEUTRALIZER

6P5141 NEUTRALIZER VALVE GROUP
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE
VEHICLE SERIAL NO. Vehicle Serial No. 50W1 to 50W4353 inclusive. Transmission
Serial No. 2MA1 to 2MA296 inclusive. Part of 6P5140 Neutralizer, Selector and Pressure
Control Valve Group shown on Page 115
c209815 SEBP1079
6P5141 VALVE GP-NEUTRALIZER Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8P-1556 [1] SPRING  
2. 1K-6978 [1] BOLT  
3. 5H-8853 [1] SEAL  
4. 6P-4973 [1] RING  
5. 6P-4969 [1] SPOOL  
 

#SEBP10790384
 

9G-6598: VALVE GP-NEUTRALIZER

9G6598 NEUTRALIZER VALVE GROUP
Transmission Serial No. 2MA297-Up
Part of 6P5140 Neutralizer, Selector and Pressure Control Valve Group
shown on Page 115A
c227566 SEBP1079
9G6598 VALVE GP-NEUTRALIZER Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8P-1556 [1] SPRING  
2. 9G-6419 [1] STOP  
3. 5H-8853 [1] SEAL  
4. 6P-4973 [1] SEAL-RING  
5. 6P-4969 [1] SPOOL  
6. 8F-9538 [1] SEAL-O-RING  
 

#SEBP10790385
 

6P-5142: SELECTOR AND PRESSURE CONTROL VALVE GROUP

6P5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP
Serial No. 50W1 to 1582, 1587, 1591 and 50W1595 inclusive
Part of 6P5140 Neutralizer, Selector and Pressure Control Valve Group shown on
Page 115
c170225 SEBP1079
6P5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6P-4942 [1] SPOOL ASSEM.  
    (Includes)
2. 1S-2121 [1] PLUNGER  
  3D-8317 [1] RING  
  8M-1013 [1] RETAINER  
  4M-2381 [1] SPRING  
3. 6P-4974 [1] SPRING  
4. 6P-4976 [1] SPRING  
5. 6P-4971 [2] STOP  
6. 1J-5353 [2] PIN  
7. 6P-4939 [1] PISTON  
8. 2H-2995 [1] SET SCREW  
9. 5M-9622 [1] SPACER 1.58mm(.062 in.) thick  
  5M-9623 [1] SPACER .92 mm(.036 in.) thick  
  5M-9624 C [3] SPACER .26 mm(.010 in.) thick  
10. 6P-4938 C [1] COVER  
11. 6F-6673 [2] SEAL  
12. 8L-4751 [1] ORIFICE  
13. 2B-2695 [3] BOLT  
14. 6P-9785 [1] SPRING  
  6P-9786 [1] RETAINER  
15. 3P-8485 [1] RING  
16. 6P-9783 [1] SPRING (inner)  
17. 6P-9784 [1] SPRING (outer)  
18. 6P-5088 C [1] SPOOL  
19. 6P-4936 [1] SPOOL  
20. 2S-4872 [1] STOP  
  8H-9189 [1] DOWEL  
21. 2A-3746 [1] PLUG  
22. 6P-4978 [1] SPRING  
23. 5S-7816 [1] SLUG  
24. 6P-4943 [1] SPOOL  
25. 7S-4607 [4] DETENT ASSEM.  
  1P-8116 [4] SEAL  
26. 8P-6321 [1] DOWEL  
27. 2M-7041 [1] SLUG  
28. 6P-4940 [1] STOP  
  2S-0696 [1] DOWEL  
29. 6P-4935 [1] SPOOL  
  C   INDICATES CHANGE
 

#SEBP10790386
 

6P-5142: SELECTOR AND PRESSURE CONTROL VALVE GROUP

6P5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP
Serial No. 50W1583 to 1586, 1588 to 1590, 1592 to 1594, 1596 to 3605, 3608,
3610 to 3612, 3615, 3616, 3618 to 3622, 3624 to 3634, 3637, 3640 and 50W3648
inclusive. Part of 6P5140 Neutralizer, Selector and Pressurizer Control Valve Group
shown on Page 115
c170226 SEBP1079
6P5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6P-4942 [1] SPOOL ASSEM.  
    (Includes)
2. 1S-2121 [1] PLUNGER  
  3D-8317 [1] RING  
  8M-1013 [1] RETAINER  
  4M-2381 [1] SPRING  
3. 9P-3041 C [1] SPRING  
4. 6P-4976 [1] SPRING  
5. 6P-4971 [2] STOP  
6. 1J-5353 [2] PIN  
7. 6P-4939 [1] PISTON  
8. 2H-2995 [1] SETSCREW  
9. 5M-9622 [1] SPACER 1.58 mm(.062 in.) thick  
  5M-9623 [1] SPACER .92 mm(.036 in.) thick  
  5M-9624 C [3] SPACER .26 mm(.010 in.) thick  
10. 6P-4938 C [1] COVER  
11. 6F-6673 [2] SEAL  
12. 9P-5476 C [1] ORIFICE  
  5H-8853 C [1] SEAL  
13. 2B-2695 [3] BOLT  
14. 6P-9785 [1] SPRING  
  6P-9786 [1] RETAINER  
15. 3P-8485 [1] RING  
16. 6P-9786 [1] SPRING (inner)  
17. 6P-9784 [1] SPRING (outer)  
18. 6P-5088 C [1] SPOOL  
19. 7G-2546 C [1] SPOOL  
20. 2S-4872 [1] STOP  
  8H-9189 [1] DOWEL  
21. 2A-3746 [1] PLUG  
22. 6P-4978 [1] SPRING  
23. 5S-7816 [1] SLUG  
24. 6P-4943 [1] SPOOL  
25. 7S-4607 [4] DETENT ASSEM.  
  1P-8116 [4] SEAL  
26. 8P-6321 [1] DOWEL  
27. 2M-7041 [1] SLUG  
28. 6P-4940 [1] STOP  
  2S-0696 [1] DOWEL  
29. 6P-4935 [1] SPOOL  
  C   INDICATES CHANGE
 

#SEBP10790387
 

7G-9570: VALVE GP-SELECTOR & PRESS CONT

7G9570 SELECTOR AND PRESSURE CONTROL VALVE GROUP
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE
VEHICLE SERIAL NO. Vehicle Serial No. 50W3606, 3607, 3609, 3613, 3614, 3617,
3623, 3635, 3636, 3638, 3639, 3641 to 3647 and 50W3649 to 50W4353 inclusive
Transmission Serial No. 2MA1-Up. Part of 6P5140 Neutralizer, Selector and Pressure
Control Valve Group shown on Page 115
c224845 SEBP1079
7G9570 VALVE GP-SELECTOR & PRESS CONT Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7G-4291 [1] SPOOL AS-RELIEF  
2. 4B-9880 [1] BALL  
  3D-8317 [1] RING-RETAINING  
  8M-1013 [1] RETAINER  
  4M-2381 [1] SPRING  
3. 9P-3041 [1] SPRING  
4. 7G-4842 [1] SPRING  
5. 6P-4971 [2] STOP  
6. 1J-5353 [2] PIN-SPRING  
7. 6P-4939 [1] PISTON-LOAD  
8. 2H-2995 [1] SETSCREW  
9. 5M-9622 [1] SPACER 1.58MM(.062IN)THK  
  5M-9623 [1] SPACER .92MM(.036IN)THK  
  5M-9624 [3] SPACER .26MM(.010IN)THK  
10. 6P-4938 [1] COVER  
11. 6F-6673 [2] SEAL-O-RING  
12. 9P-5476 [1] ORIFICE-SCREEN  
  5H-8853 [1] SEAL  
13. 2B-2695 [3] BOLT  
14. 6P-9785 [1] SPRING  
  6P-9786 [1] RETAINER  
15. 3P-8485 [1] RING-RETAINING  
16. 6P-9783 [1] SPRING (INNER)  
17. 6P-9784 [1] SPRING (OUTER)  
18. 7G-9563 [1] SPOOL  
19. 7G-2546 [1] SPOOL-DIR SELECTOR  
20. 2S-4872 [1] STOP  
21. 2A-3746 [1] PLUG-CUP  
22. 6P-4978 [1] SPRING  
23. 5S-7816 [1] SLUG  
24. 6P-4943 [1] SPOOL-RATIO  
25. 7S-4607 [4] DETENT AS  
  1P-8116 [4] SEAL-O-RING  
26. 8P-6321 [1] DOWEL  
27. 2M-7041 [1] SLUG  
28. 6P-4940 [1] STOP  
29. 6P-4935 [1] SPOOL-SPEED SELECTOR  
30. 7G-9565 [1] BODY AS  
  7G-9562 [1] PLUG-ORIFICE  
31. 2S-0696 [2] DOWEL  
 

#SEBP10790388
 

3V-0979: LOCK GP-TRANSMISSION

3V979 TRANSMISSION CONTROL LOCK GROUP
Serial No. 50W1 to 50W879 inclusive
Part of 1V4911 Transmission Control Group shown on Page 119
c238069 SEBP1079
3V0979 LOCK GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-4645 [1] PLUG  
2. 7M-8485 [2] SEAL  
3. 2V-7248 [1] SPRING (outer)  
4. 2V-7249 [1] SPRING (spring)  
5. 6J-7836 [1] RING  
6. 2V-7364 C [2] PLUNGER ASSEM.  
7. 9S-6130 [1] PLUG  
  2S-4078 [1] SEAL  
8. 2V-7368 [1] SLEEVE  
9. 2V-7254 [1] PLUNGER  
10. 2V-7366 [1] PISTON  
11. 2V-7367 [1] CYLINDER  
12. 2R-6806 [1] CONNECTOR  
13. 3J-1907 [2] SEAL  
14. 3J-7352 [1] CONNECTOR  
  3J-7354 [1] SEAL  
15. 2V-7252 [1] SLEEVE  
16. 8F-3469 [1] SEAL  
17. 6J-2419 [1] SEAL (rubber)  
  2V-7479 [1] SEAL (plastic)  
18. 2V-7253 [1] NUT  
19. 8S-7374 [1] FILTER  
20. 5P-4482 [1] PLUG  
21. 9S-8003 [2] PLUG  
  1J-9671 [2] SEAL  
22. 2V-7224 [2] SPRING  
23. 2V-7237 [1] SLEEVE  
24. 2V-7412 [1] RAIL  
25. 2S-4663 [1] SEAL (rubber)  
  2V-7478 [1] SEAL (plastic)  
26. 8D-5295 [1] PIN  
  8D-5294 [1] RING  
27. 2V-7247 [1] SPRING (inner)  
28. 2V-7225 [1] SPRING  
29. 2V-7469 [1] HOUSING  
30. 2V-7246 [1] SPRING (outer)  
  C   INDICATES CHANGE
 

#SEBP10790389
 

3V-0979: LOCK GP-TRANSMISSION

3V979 TRANSMISSION CONTROL LOCK GROUP
Serial No. 50W880 to 50W1492 inclusive
Part of 1V4911 Transmission Control Group shown on Page 119
c238070 SEBP1079
3V0979 LOCK GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-4645 [1] PLUG  
2. 7M-8485 [2] SEAL  
3. 2V-7248 [1] SPRING (outer)  
4. 2V-7249 [1] SPRING (spring)  
5. 6J-7836 C [2] RING  
6. 2V-7364 C [2] PLUNGER ASSEM.  
7. 9S-6130 [1] PLUG  
  2S-4078 [1] SEAL  
8. 3V-8513 C [1] SLEEVE  
9. 2V-7254 [1] PLUNGER  
10. 2V-7366 [1] PISTON  
11. 2V-7367 [1] CYLINDER  
12. 2R-6806 [1] CONNECTOR  
13. 3J-1907 [2] SEAL  
14. 3J-7352 [1] CONNECTOR  
  3J-7354 [1] SEAL  
15. 2V-7252 [1] SEAL  
16. 8F-3469 [1] SEAL  
17. 6J-2419 [1] SEAL (rubber)  
  2V-7479 [1] SEAL (plastic)  
18. 2V-7253 [1] NUT  
19. 8S-7374 [1] FILTER  
20. 5P-4482 [1] PLUG  
21. 9S-8003 [2] PLUG  
  1J-9671 [2] SEAL  
22. 2V-7224 [2] SPRING  
23. 2V-7237 [1] SLEEVE  
24. 2V-7412 [1] RAIL  
25. 2S-4663 [1] SEAL (rubber)  
  2V-7478 [1] SEAL (plastic)  
26. 8D-5295 [1] PIN  
  8D-5294 [1] RING  
27. 2V-7247 [1] SPRING (inner)  
28. 2V-7225 [1] SPRING  
29. 2V-7469 [1] HOUSING  
30. 2V-7246 [1] SPRING (outer)  
  C   INDICATES CHANGE
 

Information:

Caterpillar Parts SIS Catalog 988B :

CONTROL GP-TRANSMISSION HYD
6P-5139 CONTROL GP-TRANSMISSION HYD
TRANSMISSION AR
3P-9094 TRANSMISSION AR
CONTROL GP-TORQUE CONVERTER
1V-4902 CONTROL GP-TORQUE CONVERTER
HOUSING AS-CLUTCH
3T-5989 HOUSING AS-CLUTCH
TORQUE CONVERTER GP
3T-5098 TORQUE CONVERTER GP
TORQUE CONVERTER GP
7G-7663 TORQUE CONVERTER GP
TORQUE CONVERTER GP
8P-5095 TORQUE CONVERTER GP
TORQUE CONVERTER GP
8P-5095 TORQUE CONVERTER GP
VALVE GP-CONTROL
6P-5140 VALVE GP-CONTROL
VALVE GP-CONTROL
6P-5140 VALVE GP-CONTROL
VALVE GP-NEUTRALIZER
6P-5141 VALVE GP-NEUTRALIZER
VALVE GP-NEUTRALIZER
9G-6598 VALVE GP-NEUTRALIZER
SELECTOR AND PRESSURE CONTROL VALVE GROUP
6P-5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP
SELECTOR AND PRESSURE CONTROL VALVE GROUP
6P-5142 SELECTOR AND PRESSURE CONTROL VALVE GROUP
VALVE GP-SELECTOR & PRESS CONT
7G-9570 VALVE GP-SELECTOR & PRESS CONT
LOCK GP-TRANSMISSION
3V-0979 LOCK GP-TRANSMISSION

Truck sale:

Caterpillar 988B
 
Caterpillar 988B
- Wheel Loaders
N C MACHINERY CO.
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Caterpillar 988B, Wheel Loaders, Construction
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TOROMONT CAT
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CGT - COMPAGNIA GENERALE TRATTORI
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63,246 
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Caterpillar 988B, Wheel Loaders, Construction
 
Caterpillar 988B, Wheel Loaders, Construction
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CGT - COMPAGNIA GENERALE TRATTORI
Italy
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