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8J8578 REDUCING VALVE GROUP PART OF 8K2629 PUMP LINES GROUP SHOWN ON PAGE 169 235 EXCAVATOR


HYDRAULIC SYSTEM
VALVE GP-PRESSURE REDUCING
PUMP GP
VALVE GP-SERVO

EXCAVATOR 235 EXCAVATOR 83X
 235 EXCAVATOR 83X00444-UP (MACHINE) POWERED BY 3306 ENGINE HEBP1322 235 83X   (1979)

HYDRAULIC SYSTEM

VALVE GP-PRESSURE REDUCING
VALVE GP-PRESSURE REDUCING
1U-1100 VALVE GP-PRESSURE REDUCING
VALVE GP-REDUCING
9J-0785 VALVE GP-REDUCING
VALVE GP-REDUCING
8J-8578 VALVE GP-REDUCING
 

#HEBP13220500
 

8J-8578: VALVE GP-REDUCING

8J8578 REDUCING VALVE GROUP
PART OF 8K2629 PUMP LINES GROUP SHOWN ON PAGE 169
c407436 HEBP1322
8J8578 VALVE GP-REDUCING Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-6903 C [1] SLUG  
2. 3J-1907 [1] SEAL  
3. 0S-1618 [2] BOLT  
4. 8J-2055 [1] COVER  
5. 2H-3932 [1] SEAL  
6. 9S-8004 [1] PLUG-O-RING  
7. 9J-7210 C [1] PLUNGER  
8. 8J-8575 [1] RETAINER  
9. 9J-7211 C [1] PLUG  
10. 3S-4506 C [1] LOCK  
11. 1B-4203 C [1] NUT-FULL  
12. 6J-3134 C [1] SEAL  
13. 9S-8001 [5] PLUG-O-RING  
  4J-7533 [5] SEAL-O-RING  
14. 4T-2505 C [1] SPRING  
15. 4F-7952 [1] SEAL-O-RING  
16. 4B-4158 C [1] SCREW  
17. 9S-8005 [1] PLUG-O-RING  
18. 3K-0360 [2] SEAL-O-RING  
19. 1A-2029 [2] BOLT  
20. 3G-5748 C [1] VALVE GP  
21. 2H-5001 [1] SEAL  
22. 8J-8577 [1] VALVE GP  
23. 6F-8205 BC [10] WASHER  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#HEBP13220501
 

8J-1905: PUMP GP-PISTON

8J1905 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 1
SERIAL NO. 83X444 TO 83X488 INCLUSIVE
8J6899 PUMP CONTROL HEAD PARTS ARE SHOWN ON PAGE 176
c231498 HEBP1322
8J1905 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-9703 [1] PLATE  
2. 4B-4158 [4] SCREW  
3. 3P-1210 [1] CONE  
4. 2H-6488 [4] BOLT  
5. 3B-4508 [10] LOCKWASHER  
6. 8J-6899 Y [1] HEAD GROUP  
    (Separate Illustration)
7. 9J-3526 R [1] PLATE  
8. 8J-0240 [1] GASKET  
9. 0S-1573 [4] BOLT  
10. 034-4160 [8] BOLT  
11. 3G-5750 C [2] BEARING  
12. 8J-0218 [6] SHIM .13 mm(.005 in.) thick  
  8J-0217 [4] SHIM .06 mm(.002 in.) thick  
13. 3G-4779 C [1] PLATE  
14. 1D-4572 [2] BOLT  
15. 5B-5821 [2] DOWEL  
16. 9M-1974 [1] WASHER  
17. 3G-3150 [1] PLATE  
18. 8J-6897 [9] PISTON ASSEM.  
19. 8J-2043 [1] SPRING  
20. 9J-8667 R [1] BARREL ASSEM.  
21. 8J-0237 [2] SPACER  
22. 1K-6985 [1] RING  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#HEBP13220502
 

8J-1905: PUMP GP-PISTON

8J1905 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 2
SERIAL NO. 83X444 TO 83X488 INCLUSIVE
c231499 HEBP1322
8J1905 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-7336 [2] LINK  
2. 2J-0157 [2] SEAL  
3. 6F-8205 C [3] WASHER .559 mm(.022 in.) thick  
  6H-0199 C [1] WASHER 2.77 mm(.109 in.) thick  
  5J-9101 C [1] WASHER .254 mm(.010 in.) thick  
4. 8J-1603 [1] BOLT  
5. 8J-0219 [1] BOLT  
    - OR -
  3G-6019 C [1] BOLT  
  1D-5121 C [1] NUT  
6. 8J-7333 [2] INSERT  
7. 8J-6276 [2] RETAINER  
8. 1S-8517 [2] RING  
9. 9S-8008 [3] PLUG  
  3D-2824 [3] SEAL  
10. 9M-2092 [2] SEAL  
11. 8J-0123 [2] COVER  
12. 6S-2827 [2] CONE  
13. 0S-1588 [14] BOLT  
  3B-4506 [14] LOCKWASHER  
14. 8J-0220 [4] SHIM .127 mm(.005 in.) thick  
  8J-0221 [4] SHIM .05 mm(.002 in.) thick  
15. 1U-1655 C [2] SEAL  
16. 7H-2444 [2] SEAL  
17. 8J-6802 [1] SHAFT  
18. 7J-8893 [1] CONE  
19. 9J-6403 [1] RETAINER  
  6D-7889 [2] SEAL  
20. 6S-2826 [2] CUP  
21. 5B-5821 [1] DOWEL  
22. 9J-5416 [1] SWASHPLATE  
23. 1T-0284 [3] BOLT  
24. 8J-0137 [1] BODY  
25. 7J-8894 [1] CUP  
26. 1A-2223 [2] DOWEL  
    THE FOLLOWING REPAIR KIT IS AVAILABLE.
  8J-8652 [1] KIT (seal)  
    (Includes gasket, ring, and seals)
  C   INDICATES CHANGE
 

#HEBP13220503
 

1U-4722: PUMP GP-PISTON

1U4722 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 1
SERIAL NO. 83X489 TO 83X518 INCLUSIVE
8J6899 PUMP CONTROL HEAD PARTS ARE SHOWN ON PAGE 176
c302139 HEBP1322
1U4722 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-9703 [1] PLATE  
2. 4B-4158 [4] SCREW  
3. 3P-1210 [1] CONE  
4. 2B-2006 [4] BOLT  
5. 9M-1974 [8] WASHER  
6. 8J-6899 Y [1] HEAD GROUP  
    (Separate Illustration)
7. 9J-3526 R [1] PLATE  
8. 8J-0240 [1] GASKET  
9. 1B-2886 [4] BOLT  
10. 034-4160 [8] BOLT  
11. 3G-5750 [2] BEARING  
12. 8J-0218 B [6] SHIM .14 mm(.005 in.) thick  
  8J-0217 B [4] SHIM .06 mm(.002 in.) thick  
13. 3G-4779 [1] PLATE  
14. 6F-5282 [2] BOLT  
15. 5B-5821 [2] DOWEL  
16. 1K-6985 [1] RING  
17. 3G-3150 [1] PLATE  
18. 8J-6897 [9] PISTON ASSEM.  
19. 8J-2043 [1] SPRING  
20. 9J-8667 R [1] BARREL ASSEM.  
21. 8J-0237 [2] SPACER  
  B   USE AS REQUIRED
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#HEBP13220504
 

1U-4722: PUMP GP-PISTON

1U4722 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 2
SERIAL NO. 83X489 TO 83X518 INCLUSIVE
c302140 HEBP1322
1U4722 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-7336 [2] LINK  
2. 2J-0157 [2] SEAL  
3. 6D-7889 [2] SEAL  
4. 9J-7243 [1] BOLT  
5. 3G-6019 [1] BOLT  
6. 1U-4019 [2] INSERT  
7. 8J-6276 [2] RETAINER  
8. 1S-8517 [2] RING  
9. 9S-8008 [3] PLUG  
  3D-2824 [3] SEAL  
10. 9M-2092 [2] SEAL  
11. 8J-0123 [2] COVER  
12. 6S-2827 [2] CONE  
13. 0S-1588 [14] BOLT  
  5M-2894 [14] WASHER  
14. 8J-0220 B [4] SHIM .127 mm(.005 in.)thick  
  8J-0221 B [4] SHIM .05 mm(.002 in.) thick  
15. 1U-1655 [2] SEAL  
16. 7H-2444 [2] SEAL  
17. 8J-6802 [1] SHAFT  
18. 7J-8893 [1] CONE  
19. 9J-6403 [1] RETAINER  
20. 6S-2826 [2] CUP  
21. 5B-5821 [1] DOWEL  
22. 9J-5416 [1] SWASHPLATE  
23. 1T-0284 [3] BOLT  
24. 8J-0137 [1] BODY  
25. 7J-8894 [1] CUP  
26. 1A-2223 [2] DOWEL  
27. 1D-5121 [2] NUT  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  8J-8652 [1] KIT  
    (Includes Gasket, Ring and Seals)
  B   USE AS REQUIRED
 

#HEBP13220505
 

4T-7026: PUMP GP-PISTON

4T7026 SLIPPER PISTON PUMP GROUP-2 REQUIRED - PART 1 OF 2
SERIAL NO. 83X519 TO 83X549 INCLUSIVE
8J6899-PAGE 176
c311413 HEBP1322
4T7026 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-9703 [1] PLATE  
2. 4B-4158 [4] SCREW  
3. 3P-1210 [1] CONE-ROLLER BEARING  
4. 2B-2006 [4] BOLT  
5. 9M-1974 [8] WASHER  
6. 8J-6899 Y [1] HEAD GP-PUMP CONTROL  
7. 9J-3526 R [1] PLATE-ROTATION PORT  
8. 8J-0240 [1] GASKET  
9. 1B-2886 [4] BOLT  
10. 034-4160 [8] BOLT-SELF LOCKING  
11. 3G-5750 [2] BEARING-PLATE  
12. 8J-0218 B [6] SHIM  
    .14MM
  8J-0217 B [4] SHIM  
    .06MM
13. 3G-4779 [1] PLATE-WEAR  
14. 6F-5282 [2] BOLT  
15. 5B-5821 [2] PIN-DOWEL  
16. 1K-6985 [1] RING-RETAINING  
17. 4T-7023 [1] PLATE-RETRACTION  
18. 4T-3122 R [9] PISTON AS  
19. 8J-2043 [1] SPRING  
20. 9J-8667 R [1] BARREL AS  
21. 8J-0237 [2] SPACER-SPRING  
  B   USE AS REQUIRED
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#HEBP13220506
 

4T-7026: PUMP GP-PISTON

4T7026 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 2 OF 2
SERIAL NO. 83X519 TO 83X549 INCLUSIVE
c311414 HEBP1322
4T7026 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4T-1942 [2] LINK-PISTON  
2. 2J-0157 [2] SEAL-O-RING  
3. 6D-7889 [2] SEAL-O-RING  
4. 9J-7243 [1] BOLT-ANGLE STOP  
5. 3G-6019 [1] BOLT-ANGLE STOP  
6. 4T-1941 [2] INSERT-BEARING  
7. 8J-6276 [2] RETAINER  
8. 1S-8517 [2] RING-RETAINING  
9. 9S-8008 [3] PLUG-O-RING  
  3D-2824 [3] SEAL-O-RING  
10. 9M-2092 [2] SEAL-O-RING  
11. 8J-0123 [2] COVER-TRUNNION  
12. 6S-2827 [2] CONE-ROLLER BEARING  
13. 0S-1588 [14] BOLT  
  5M-2894 [14] WASHER  
14. 8J-0220 B [4] SHIM  
    .127MM
  8J-0221 B [4] SHIM  
    .05MM
15. 1U-1655 [2] SEAL-LIP TYPE  
16. 7H-2444 [2] SEAL  
17. 8J-6802 [1] SHAFT  
18. 7J-8893 [1] CONE-ROLLER BEARING  
19. 9J-6403 [1] RETAINER-SEAL  
20. 6S-2826 [2] CUP-ROLLER BEARING  
21. 5B-5821 [1] PIN-DOWEL  
22. 9J-5416 [1] SWASHPLATE  
23. 1T-0284 [3] BOLT-SOCKET HEAD  
24. 8J-0137 [1] BODY-PUMP  
25. 7J-8894 [1] CUP-ROLLER BEARING  
26. 1A-2223 [2] DOWEL  
27. 1D-5121 [2] NUT-JAM  
  B   USE AS REQUIRED
 

#HEBP13220507
 

4T-2507: PUMP GP-PISTON

4T2507 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 1 OF 2
SERIAL NO. 83X550-UP
8J6899-PAGE 176
c515782 HEBP1322
4T2507 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-9703 [1] PLATE  
2. 4B-4158 [4] SCREW  
3. 3P-1210 [1] CONE-ROLLER BEARING  
4. 2B-2006 [4] BOLT  
5. 9M-1974 [8] WASHER  
6. 8J-6899 Y [1] HEAD GP-PUMP CONTROL  
7. 6E-1332 [1] PLATE  
8. 9T-6524 [1] GASKET  
9. 1B-2886 [4] BOLT  
10. 034-4160 [8] BOLT-SELF LOCKING  
11. 3G-5750 [2] BEARING-PLATE  
12. 8J-0218 B [6] SHIM  
    .12MM(.005IN) THICK
  8J-0217 B [4] SHIM  
    .05MM(.002IN)THICK
13. 3G-4779 [1] PLATE-WEAR  
14. 6F-5282 [2] BOLT  
15. 5B-5821 [2] PIN-DOWEL  
16. 1K-6985 [1] RING-RETAINING  
17. 4T-7023 [1] PLATE-RETRACTION  
18. 4T-3122 R [9] PISTON AS  
19. 8J-2043 [1] SPRING  
20. 9J-8667 R [1] BARREL AS  
21. 8J-0237 [2] SPACER-SPRING  
22. 5P-7213 C [10] WASHER-HARD  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#HEBP13220508
 

4T-2507: PUMP GP-PISTON

4T2507 SLIPPER PISTON PUMP GROUP-2 REQUIRED-PART 2 OF 2
SERIAL NO. 83X550-UP
c537833 HEBP1322
4T2507 PUMP GP-PISTON Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4T-1942 [2] LINK-PISTON  
2. 2J-0157 [2] SEAL-O-RING  
3. 6D-7889 [2] SEAL-O-RING  
4. 9J-7243 [1] BOLT-ANGLE STOP  
5. 3G-6019 [1] BOLT-ANGLE STOP  
6. 4T-1941 [2] INSERT-BEARING  
7. 8J-6276 [2] RETAINER  
8. 1S-8517 [2] RING-RETAINING  
9. 9S-8008 [3] PLUG-O-RING  
  3D-2824 [3] SEAL-O-RING  
10. 9M-2092 [2] SEAL-O-RING  
11. 4T-2508 [2] COVER-TRUNNION  
12. 2D-9191 [2] CONE-ROLLER BEARING  
13. 0S-1588 [14] BOLT (3/8-16X1.25IN)  
  5M-2894 [14] WASHER  
14. 8J-0220 B [4] SHIM (.127MM THK)  
  8J-0221 B [4] SHIM (.051MM THK)  
15. 1U-1655 [2] SEAL-LIP TYPE  
16. 7H-2444 [2] SEAL  
17. 8J-6802 [1] SHAFT  
18. 7J-8893 [1] CONE-ROLLER BEARING  
19. 9J-6403 [1] RETAINER-SEAL  
20. 2D-9190 [2] CUP-ROLLER BEARING  
21. 5B-5821 [1] PIN-DOWEL  
22. 4T-2509 [1] SWASHPLATE  
23. 1T-0284 [3] BOLT-SOCKET HEAD  
24. 8J-0137 [1] BODY-PUMP  
25. 7J-8894 [1] CUP-ROLLER BEARING  
26. 1A-2223 [2] DOWEL  
27. 1D-5121 [2] NUT-JAM (7/8-14 THD)  
   
    THE FOLLOWING REPAIR
    KIT IS AVAILABLE:
  8J-8652 [1] KIT-SEAL (INCLUDES GASKET,  
    RING & SEALS)
  B   USE AS REQUIRED
 

#HEBP13220509
 

3G-3926: VALVE GP-SERVO

3G3926 SERVO VALVE GROUP
PART OF 8J6899 PUMP CONTROL HEAD GROUP SHOWN ON PAGE 176. NOTE: FOR FIELD
REPLACEMENT OF 3G3925 SLEEVE & 3G3924 SPOOL ORDER 3G3928 FOLLOWER VALVE
GROUP SHOWN ON PAGE 177
c231687 HEBP1322
3G3926 VALVE GP-SERVO Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8S-3159 C [1] SETSCREW-SOCKET  
2. 8J-2027 [1] SPACER  
3. 3D-8317 [1] RING-RETAINING  
4. 3G-3917 [1] STOP  
5. 3G-3916 [1] RING-RETAINING  
6. 8J-3820 [1] PISTON  
7. 8J-7335 [1] PISTON AS  
8. 8J-2040 [1] INSERT  
9. 2L-6726 [1] RING-RETAINING  
10. 8J-3801 [1] CARTRIDGE-SERVO  
11. 3G-3925 [1] SLEEVE-FOLLOW UPPER  
12. 3G-3924 [1] SPOOL-SERVO  
  C   CHANGE FROM PREVIOUS TYPE
 

Information:

Caterpillar Parts SIS Catalog 235 :

VALVE GP-RELIEF
4T-0955 VALVE GP-RELIEF
VALVE GP-COMBINATION
1U-4749 VALVE GP-COMBINATION
VALVE GP
9J-0775 VALVE GP
VALVE GP-COMBINATION
9J-0782 VALVE GP-COMBINATION
VALVE GP-REDUCING
9J-0785 VALVE GP-REDUCING
VALVE GP-RELIEF
9J-3024 VALVE GP-RELIEF
VALVE GP-PITCH RELIEF
1U-4596 VALVE GP-PITCH RELIEF
VALVE GP-PITCH RELIEF
8J-2057 VALVE GP-PITCH RELIEF
PUMP GP-PISTON
8J-1905 PUMP GP-PISTON
8J-1905 PUMP GP-PISTON
PUMP GP-PISTON
1U-4722 PUMP GP-PISTON
1U-4722 PUMP GP-PISTON
PUMP GP-PISTON
4T-7026 PUMP GP-PISTON
4T-7026 PUMP GP-PISTON
PUMP GP-PISTON
4T-2507 PUMP GP-PISTON
4T-2507 PUMP GP-PISTON

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The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.