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7K8502 IMPLEMENT PUMP AND LINES GROUP--Part 1 of 2 Serial No. 87A4754 and 87A4868 to 87A5556 inclusive Refer also to Pages 180B through 180C for special parts 988




HYDRAULIC SYSTEM

LINES GP-PUMP
 

#UEG0028S0440
 

7K-8502: IMPLEMENT PUMP AND LINES GROUP

7K8502 IMPLEMENT PUMP AND LINES GROUP--Part 1 of 2
Serial No. 87A4754 and 87A4868 to 87A5556 inclusive
Refer also to Pages 180B through 180C for special parts
c166472 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4D-0354 [2] FITTING  
  3K-0360 [1] SEAL  
2. 8K-7185 [1] HOSE ASSEM. 2.80 m(110.04 in.)  
3. 6K-0806 [3] TIE  
4. 6D-2399 [1] HOSE  
5. 9M-6738 [4] CLAMP  
6. 7S-2498 [1] TUBE ASSEM.  
7. 0S-1608 [2] BOLT  
8. 2H-4145 [1] SEAL  
9. 0S-1588 [2] BOLT  
10. 3B-4506 [9] LOCKWASHER  
11. 0S-1573 [2] BOLT  
12. 3B-4508 [12] LOCKWASHER  
13. 6J-3650 [3] SEAL  
14. 8S-7467 [1] TUBE ASSEM.  
  9S-8010 [1] PLUG  
  2S-4078 [1] SEAL  
15. 4K-5803 [2] TIE  
16. 0S-1594 [1] BOLT  
  1D-4717 [1] NUT  
17. 2S-2162 [2] CLAMP  
18. 1A-1460 [1] BOLT  
  1B-4264 [1] COLLAR  
  1F-7960 [1] WASHER  
19. 8S-9270 [1] HOSE ASSEM.  
    (Includes)
  3S-9339 [1] STEM ASSEM. (90 degrees)  
20. 5P-0183 CH HOSE 49 cm(19.29 in.)  
21. 3S-8330 [2] SLEEVE  
22. 3S-9333 [1] STEM ASSEM. (Straight)  
23. 0S-1585 [8] BOLT  
24. 3H-4330 [4] FLANGE  
25. 5S-6525 [1] BLOCK  
26. 1B-2886 [2] BOLT  
27. 4F-7391 [1] SEAL  
28. 7K-9728 [1] COVER  
29. 2A-4639 [4] BOLT  
  C   INDICATES CHANGE
  H   ORDER BY THE CENTIMETRE
 

#UEG0028S0441
 

7K-8502: IMPLEMENT PUMP AND LINES GROUP

7K8502 IMPLEMENT PUMP AND LINES GROUP--Part 2 of 2
Serial No. 87A4754 and 87A4868 to 87A5556 inclusive
7J8240 Pump parts are shown on Page 143A-6
Refer also to Pages 180B through 180C for special parts
c166473 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8K-5644 [1] PLATE ASSEM.  
2. 1A-1460 [2] BOLT  
  2H-3788 [2] NUT  
3. 4B-4280 [6] WASHER  
4. 3B-1915 [6] BOLT  
  3B-4506 [6] LOCKWASHER  
  4B-4278 [6] WASHER  
5. 7K-9725 [1] HOSE ASSEM.  
    (Includes)
  5P-0183 CH HOSE 163 cm(64.17 in.)  
6. 3S-9338 [1] STEM ASSEM. (67.5 degrees)  
7. 3S-8330 [2] SLEEVE  
8. 5P-7536 CH GUARD 149 cm(58.66 in.)  
9. 3S-9339 [1] STEM ASSEM. (90 degrees)  
10. 6J-3650 [2] SEAL  
11. 7K-9521 [1] TUBE ASSEM.  
12. 3H-4330 [2] FLANGE  
13. 0S-1585 [4] BOLT  
14. 5F-3106 [1] SEAL  
15. 1A-1135 [2] BOLT  
  [2] WASHER  
16. 3B-4510 [6] LOCKWASHER  
17. 0S-1569 [2] BOLT  
18. 0S-1566 [2] BOLT  
19. 7J-8240 Y [1] PUMP GROUP  
    (See Separate Illustration)
20. 9M-7269 [2] BOLT  
  7K-1308 [2] SPACER  
21. 8K-5641 [1] PLATE  
22. 2H-3934 [1] SEAL  
23. 3B-4508 [6] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
  H   ORDER BY THE CENTIMETRE
 

#UEG0028S0442
 

7K-8502: IMPLEMENT PUMP AND LINES GROUP

7K8502 IMPLEMENT PUMP AND LINES GROUP--Part 1 of 2
Serial No. 87A5557-Up
Refer also to Page 180B through 180C for special parts
c138893 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4D-0354 [2] FITTING  
  3K-0360 [1] SEAL  
2. 8K-7185 [1] HOSE ASSEM. (110" long overall)  
3. 6K-0806 [3] TIE  
4. 6D-2399 [1] HOSE  
5. 9M-6738 [4] CLAMP  
6. 7S-2498 [1] TUBE ASSEM.  
7. 0S-1608 [2] BOLT  
8. 2H-4145 [1] SEAL  
9. 0S-1588 [2] BOLT  
10. 3B-4506 C [4] LOCKWASHER  
11. 0S-1573 [2] BOLT  
12. 3B-4508 C [4] LOCKWASHER  
13. 6J-3650 [3] SEAL  
14. 8S-7467 [1] TUBE ASSEM.  
  9S-8010 [1] PLUG  
  2S-4078 [1] SEAL  
15. 4K-5803 [2] TIE  
16. 2B-0947 C [1] BOLT  
17. 9K-7196 C [1] CLAMP ASSEM.  
18. 1F-7960 [1] WASHER  
19. 8S-9270 [1] HOSE ASSEM.  
  3S-9339 [1] STEM ASSEM. (90 degrees)  
20. 8S-8220 H HOSE 19"  
21. 3S-8330 [2] SLEEVE  
22. 3S-9333 [1] STEM ASSEM. (Straight)  
23. 0S-1585 [8] BOLT  
24. 1P-4579 C [4] FLANGE  
25. 5S-6525 [1] BLOCK  
26. 1B-2886 [2] BOLT  
27. 4F-7391 [1] SEAL  
28. 7K-9728 [1] COVER  
29. 2A-4639 [4] BOLT  
  C   INDICATES CHANGE
  H   ORDER BY THE INCH
 

#UEG0028S0443
 

7K-8502: IMPLEMENT PUMP AND LINES GROUP

7K8502 IMPLEMENT PUMP AND LINES GROUP--Part 2 of 2
Serial No. 87A5557-Up. 7J8240 Pump parts are shown on Page 143A-6
Refer also to Pages 180B through 180C for special parts
c144463 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8K-5644 [1] PLATE ASSEM.  
2. 1A-1460 [2] BOLT  
  2H-3788 [2] NUT  
3. 4B-4280 [6] WASHER  
4. 3B-1915 [6] BOLT  
  3B-4506 [6] LOCKWASHER  
  4B-4278 [6] WASHER  
5. 7K-9725 [1] HOSE ASSEM.  
  8S-8220 CH HOSE 64 in.  
6. 3S-9338 [1] STEM ASSEM. (67.5 degrees)  
7. 3S-8330 [2] SLEEVE  
8. 8S-7244 H GUARD 50"  
9. 3S-9339 [1] STEM ASSEM. (90 degrees)  
10. 6J-3650 [2] SEAL  
11. 7K-9521 [1] TUBE ASSEM.  
12. 1P-4579 [2] FLANGE  
13. 0S-1585 [4] BOLT  
14. 5F-3106 [1] SEAL  
15. 1A-1135 [2] BOLT  
  [2] WASHER  
16. 3B-4510 [6] LOCKWASHER  
17. 0S-1569 [2] BOLT  
18. 0S-1566 [2] BOLT  
19. 7J-8240 Y [1] PUMP GROUP  
    (See Separate Illustration)
20. 9M-7269 [2] BOLT  
  7K-1308 [2] SPACER  
21. 8K-5641 [1] PLATE  
22. 2H-3934 [1] SEAL  
23. 3B-4508 [2] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
  H   ORDER BY THE INCH
 

#UEG0028S0444
 

7J-8240: PISTON PUMP GROUP

7J8240 PISTON PUMP GROUP
Serial No. 87A4754 and 87A4868-Up
Part of Implement Pump and Lines shown on Pages 143A-1, 143A-3 and 143A-4
c133504 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-8005 [2] PLUG  
  3K-0360 [2] SEAL  
2. 6F-4855 [2] SEAL  
3. 1T-0765 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
4. 7J-8242 [1] COVER  
5. 1D-4574 [6] BOLT  
6. 3B-4508 [14] LOCKWASHER  
7. 1J-2176 [2] SEAL  
8. 7J-8900 [1] IMPELLER  
9. 0S-1585 [4] BOLT  
10. 3H-4330 [2] FLANGE  
11. 8J-0101 [1] PLATE  
  4B-4158 [4] SCREW  
12. 2R-1236 [1] RING  
13. 7J-8266 [1] SPACER  
14. 7J-9014 [12] SHIM (.005" Thick)  
  7J-9015 [8] SHIM (.002" Thick)  
15. 7J-8248 [1] BARREL ASSEM.  
16. 7J-9013 [5] SHIM (.002" Thick)  
17. 7J-8253 [1] CAM  
18. 5B-5821 [3] DOWEL  
19. 7J-9016 [4] BOLT  
20. 7J-8893 [1] CONE  
21. 7J-8244 [1] SHAFT  
22. 4D-1736 [1] RING  
23. 3J-8907 [1] SEAL  
24. 7J-8984 [1] BODY ASSEM.  
  5B-5821 [2] DOWEL  
25. 7J-8894 [1] CUP  
26. 7J-8247 [1] BEARING  
27. 7J-8246 [1] PLATE  
28. 7J-9005 [9] PISTON ASSEM.  
29. 7J-8207 [2] SPACER  
30. 8J-2640 [1] BEARING  
31. 7J-9018 [8] BOLT  
32. 7J-8206 [1] SPRING  
33. 1M-7914 [1] RING  
34. 7J-9012 [1] PLATE  
35. 3K-0650 [1] CONE  
36. 7J-9017 [1] SEAL  
37. 7J-8986 [1] HEAD ASSEM.  
38. 8J-0412 [1] CUP  
39. 2J-2866 [5] SHIM  
40. 1B-8708 [1] KEY  
41. 6B-1097 [1] NUT  
  6B-1125 [1] LOCK  
42. 7H-1911 [4] BOLT  
 

#UEG0028S0445
 

7J-0592: HYDRAULIC PUMP ASSEMBLY

7J592 HYDRAULIC PUMP ASSEMBLY
Serial No. 87A2540 to 87A4753 & 87A4755 to 87A4867 inclusive
Part of Implement Pump and Lines shown on Pages 143 & 1 43-2
c110232 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4J-1393 O [2] PIN  
  4J-1394 O [2] SCREW  
  J [2] PIN  
  J [2] SCREW  
  J [1] RING  
  J [1] ROTOR  
  2H-3934 H [1] SEAL  
  2H-4145 H [1] SEAL  
  2B-0947 [4] BOLT  
  4K-0415 [1] COVER  
  1S-0670 H [1] RING  
  5J-8764 R [1] CARTRIDGE ASSEM.  
    (60 GALLONS PER MINUTE)
    (CONSISTS OF PARTS MARKED O)
  7J-0557 [1] CARTRIDGE ASSEM.  
    (17 GALLONS PER MINUTE)
    (CONSISTS OF PARTS MARKED J)
  1H-9696 H [1] SEAL  
  J [1] PLATE  
  1S-0669 H [1] RING  
  J [10] VANE  
  J [10] INSERT  
  4J-3427 [4] BOLT  
  J [1] PLATE  
  O [1] BEARING  
  6J-9073 O [1] PLATE ASSEM.  
  7J-8081 [1] COVER ASSEM.  
  7J-8080 [1] DAMPER  
    (PART OF 7J8081 ASSEM.)
  O [1] ROTOR  
  4J-9221 H [1] RING  
  1S-0668 H [1] RING  
  4J-3448 [1] BODY  
  3J-7719 [1] RING  
  1J-6474 [1] RING  
  2J-7764 H [1] SEAL  
  2J-7759 H [1] WIPER  
  4J-6789 [1] SHAFT  
  2J-7763 [1] WASHER  
  3L-1425 [1] BEARING  
  6H-3977 H [1] SEAL  
  O [1] PLATE  
  5F-3106 H [1] SEAL  
  2H-3935 H [1] SEAL  
  O [10] VANE  
  O [10] INSERT  
  O [1] RING  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  4J-9278 [1] KIT (SEAL)  
    (CONSISTS OF PARTS MARKED H)
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0028S0446
 

6J-7600: HYDRAULIC PUMP ASSEMBLY

6J7600 HYDRAULIC PUMP ASSEMBLY
Part of Implement Pump and Lines shown on Page 143
c124907 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4J-1393 O [2] PIN  
  4J-1394 O [2] SCREW  
  4K-0407 J [2] PIN  
  4K-0405 J [2] SCREW  
  4J-7477 J [1] RING  
  4J-7476 J [1] ROTOR  
  2H-3934 H [1] SEAL  
  2H-4145 H [1] SEAL  
  2B-0947 [4] BOLT  
  4K-0415 [1] COVER  
  1S-0670 H [1] RING  
  1H-9696 H [1] SEAL  
  6J-8112 J [1] PLATE  
  1S-0669 H [1] RING  
  4J-0982 J [1] VANE KIT (17 G.P.M.)  
    (CONSISTS OF 10 VANES AND INSERTS)
  4J-3427 [4] BOLT  
  6J-9075 J [1] PLATE  
  [1] BEARING  
    (PART OF PLATE ASSEM. 6J9073)
  6J-9073 O [1] PLATE ASSEM.  
  4J-3429 [1] COVER  
  5J-5928 O [1] ROTOR  
  4J-9221 H [1] RING  
  1S-0668 H [1] RING  
  4J-3448 [1] BODY  
  3J-7719 [1] RING  
  1J-6474 [1] RING  
  2J-7764 H [1] SEAL  
  2J-7759 H [1] WIPER  
  4J-6789 [1] SHAFT  
  2J-7763 [1] WASHER  
  3L-1425 [1] BEARING  
  6H-3977 H [1] SEAL  
  6J-9074 O [1] PLATE  
  5F-3106 H [1] SEAL  
  2H-3935 H [1] SEAL  
  4J-1397 O [1] VANE KIT (60 G.P.M.)  
    (CONSISTS OF 10 VANES AND INSERTS)
  5J-8763 O [1] RING  
    THE FOLLOWING REPAIR KITS ARE AVAILABLE:
  4J-9278 [1] KIT (SEAL)  
    (CONSISTS OF PARTS MARKED H)
  5J-8764 R [1] KIT (CARTRIDGE)  
    (CONSISTS OF PARTS MARKED O)
  4J-6790 [1] KIT (CARTRIDGE)  
    (CONSISTS OF PARTS MARKED J)
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0028S0447
 

HAND CONTROL

HAND CONTROL
Serial No. 87A2385 to 87A2687 and 87A3004-Up
c110931 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2B-0134 [1] SPACER  
  4K-6849 [4] WASHER  
  6K-8088 [2] BEARING  
  0S-0094 [1] WASHER  
  4K-1371 [1] SHAFT ASSEM.  
  8F-5340 [2] SEAL  
  6K-8088 [2] BEARING  
  1B-4430 [2] NUT  
  6K-8090 [1] ROD  
  6K-4442 [2] BALLJOINT ASSEM.  
  1B-4205 [2] NUT  
  3B-4508 [2] LOCKWASHER  
  6K-8091 [1] TUBE ASSEM.  
  6K-8335 [2] BEARING ASSEM.  
  0S-1571 [1] BOLT  
  1D-4717 [1] NUT  
  1B-8736 [2] KEY  
  6K-8092 [1] SHAFT  
  5K-0013 [1] LEVER  
  6F-7010 [2] END  
  2B-2537 [1] ROD  
  1B-4430 [2] NUT  
  0S-0175 [4] PIN  
  3B-4617 [4] COTTER PIN  
  6F-7010 [2] END  
  2B-2537 [1] ROD  
  1B-4430 [2] NUT  
  0L-1170 [1] HANDLE  
  0L-1170 [1] HANDLE  
  6K-8093 [1] LEVER (LIFT)  
  6K-8094 [1] LEVER (TILT)  
  0S-1594 [1] BOLT  
  3B-4506 [1] LOCKWASHER  
  1B-4205 [2] NUT  
  3B-4508 [2] LOCKWASHER  
  6K-4442 [2] BALLJOINT ASSEM.  
  1B-4430 [2] NUT  
  5H-6816 [1] ROD  
  6K-8088 [2] BEARING  
  0S-0094 [3] WASHER  
  0L-1351 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  4K-6708 [2] BRACKET  
  4K-6707 [2] FLANGE  
  2H-3755 [4] BOLT  
  1D-4716 [4] NUT  
  3B-4505 [4] LOCKWASHER  
  4K-0932 [1] LEVER  
  0S-1571 [1] BOLT  
  1D-4717 [1] NUT  
 

#UEG0028S0448
 

HAND CONTROL

HAND CONTROL
Serial No. 87A2688 to 87A3003 inclusive
c110932 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2B-0134 [1] SPACER  
  4K-6849 [4] WASHER  
  6K-8088 [2] BEARING  
  0S-0094 [1] WASHER  
  4K-1371 [1] SHAFT ASSEM.  
  8F-5340 [2] SEAL  
  6K-8088 [2] BEARING  
  1B-4430 [2] NUT  
  6K-8090 [1] ROD  
  6K-4442 [2] BALLJOINT ASSEM.  
  1B-4205 [2] NUT  
  3B-4508 [2] LOCKWASHER  
  6K-8091 [1] TUBE ASSEM.  
  6K-8335 [2] BEARING ASSEM.  
  0S-1571 [1] BOLT  
  1D-4717 [1] NUT  
  1B-8736 [2] KEY  
  4K-6709 [1] SHAFT  
  9F-2247 [2] PLUG  
  5K-0013 [1] LEVER  
  6F-7010 [2] END  
  2B-2537 [1] ROD  
  1B-4430 [2] NUT  
  0S-0175 [4] PIN  
  3B-4617 [4] COTTER PIN  
  6F-7010 [2] END  
  2B-2537 [1] ROD  
  1B-4430 [2] NUT  
  0L-1170 [1] HANDLE  
  0L-1170 [1] HANDLE  
  6K-8093 [1] LEVER (LIFT)  
  6K-8094 [1] LEVER (TILT)  
  0S-1594 [1] BOLT  
  3B-4506 [1] LOCKWASHER  
  1B-4205 [2] NUT  
  3B-4508 [2] LOCKWASHER  
  6K-4442 [2] BALLJOINT ASSEM.  
  1B-4430 [2] NUT  
  5H-6816 [1] ROD  
  6K-8088 [2] BEARING  
  0S-0094 [3] WASHER  
  0L-1351 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  4K-6708 [2] BRACKET  
  4K-6707 [2] FLANGE  
  2H-3755 [4] BOLT  
  1D-4716 [4] NUT  
  3B-4505 [4] LOCKWASHER  
  4K-0932 [1] LEVER  
  0S-1571 [1] BOLT  
  1D-4717 [1] NUT  
 

#UEG0028S0449
 

4J-7377: LIFT CYLINDER GROUP

4J7377 LIFT CYLINDER GROUP--8.25" Bore x 39.50" Stroke--2 Required
Serial No. 87A2385 to 87A2462 inclusive
Refer also to Page 194 for special parts
c122429 UEG0028S
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Parts for your 988 WHEEL LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4J-6888 [1] NUT  
  4J-7376 [1] RING  
  4J-6898 [1] WASHER  
  4J-6900 [2] BEARING  
    (PART OF CYLINDER ASSEM. 4J7039)
  4J-7306 [1] PISTON  
  5J-5559 [2] SEAL ASSEM.  
  4J-7039 [1] CYLINDER ASSEM.  
  1J-2175 [4] BOLT  
  3B-4518 [4] LOCKWASHER  
  4J-6894 [6] SHIM  
  1A-1460 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
  4J-6886 [1] ROD  
  4J-6899 [1] BEARING  
  6J-4169 [1] SEAL  
  4J-6895 [1] RETAINER  
  4J-6897 [1] PACKING  
  4J-7305 [1] HEAD  
  1J-2176 [1] SEAL  
  2J-0744 [1] RING  
 

Information:

Technical Information Bulletin
The Flange Head on <NOBR>442-5593</NOBR> Coupling As May Have Been Manufactured Incorrectly {5057}
The Flange Head on 442-5593 Coupling As May Have Been Manufactured Incorrectly {5057}
Service Magazine

Caterpillar Parts SIS Catalog 988 :

Truck sale:

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35.000 
 
Caterpillar 988, Radlader, Bau-Und Bergbauausrüstung
- Wheel Loaders
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- Wheel Loaders
CGT - COMPAGNIA GENERALE TRATTORI
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32,000 
Caterpillar BALDE988_STD_CL.UO, Construction
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FINNING CHILE S.A.
Chile
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