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8J1905 PISTON PUMP GROUP-SLIPPER-PART 1-2 REQUIRED SERIAL NO. 64R1258 TO 64R1351 INCLUSIVE. 8J6899 HEAD PARTS ARE SHOWN ON PAGE 158 235


HYDRAULIC SYSTEM
PUMP GP
VALVE GP-SERVO
OPERATOR STATION
CONTROL GP-HYDRAULIC

EXCAVATOR 235 EXCAVATOR 64R
 235 EXCAVATOR 64R01258-UP (MACHINE) POWERED BY 3306 ENGINE HEBP1321 235 64R   (1977)

HYDRAULIC SYSTEM

PUMP GP
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
 

#HEBP13210450
 

8J-1905: PUMP GP-PISTON

8J1905 PISTON PUMP GROUP-SLIPPER-PART 1-2 REQUIRED
SERIAL NO. 64R1258 TO 64R1351 INCLUSIVE. 8J6899 HEAD PARTS ARE SHOWN
ON PAGE 158
c231498 HEBP1321
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
 

#HEBP13210451
 

8J-1905: PUMP GP-PISTON

9J1905 PISTON PUMP GROUP-SLIPPER-PART 2-2 REQUIRED
SERIAL NO. 64R1258 TO 64R1351 INCLUSIVE
c231499 HEBP1321
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
 

#HEBP13210452
 

1U-4722: PUMP GP-PISTON

1U4722 PISTON PUMP GROUP-SLIPPER-PART 1 OF 2-2 REQUIRED
SERIAL NO. 64R1352 TO 64R1559 INCLUSIVE
8J6899-PAGE 158
c302139 HEBP1321
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
 

#HEBP13210453
 

1U-4722: PUMP GP-PISTON

1U4722 PISTON PUMP GROUP-SLIPPER-PART 2 OF 2-2 REQUIRED
SERIAL NO. 64R1352 TO 64R1559 INCLUSIVE
c302140 HEBP1321
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
 

#HEBP13210454
 

4T-7026: PUMP GP-PISTON

4T7026 PISTON PUMP GROUP-SLIPPER-PART 1 OF 2-2 REQUIRED
SERIAL NO. 64R1560 TO 64R1636 INCLUSIVE
8J6899-PAGE 158
c311413 HEBP1321
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
 

#HEBP13210455
 

4T-7026: PUMP GP-PISTON

4T7026 PISTON PUMP GROUP-SLIPPER-PART 2 OF 2-2 REQUIRED
SERIAL NO. 64R1560 TO 64R1636 INCLUSIVE
c311414 HEBP1321
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
 

#HEBP13210456
 

4T-2507: PUMP GP-PISTON

4T2507 PISTON PUMP GROUP-SLIPPER-PART 1 OF 2-2 REQUIRED
SERIAL NO. 64R1637-UP
8J6899-PAGE 158
c537480 HEBP1321
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 (1/2-13X4.75IN)  
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 (1/2-13X3.75IN)  
10. 034-4160 [8] BOLT-SELF LOCKING (5/16-18X1.0)  
11. 3G-5750 [2] BEARING-PLATE  
12. 8J-0218 B [6] SHIM (.127MM THK)  
  8J-0217 B [4] SHIM (.051MM THK)  
13. 3G-4779 [1] PLATE-WEAR  
14. 6F-5282 [2] BOLT (1/2-13X5.25IN)  
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  
23. 4T-9380 [2] INSERT  
24. 6E-2943 [2] PLUG  
25. 6E-5572 B [2] SHIM (0.30MM THK)  
  6E-5741 B [2] SHIM (0.12MM THK)  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#HEBP13210457
 

4T-2507: PUMP GP-PISTON

4T2507 PISTON PUMP GROUP-SLIPPER-PART 2 OF 2-2 REQUIRED
SERIAL NO. 64R1637-UP
c537833 HEBP1321
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
 

#HEBP13210458
 

3G-3926: VALVE GP-SERVO

3G3926 SERVO VALVE GROUP
PART OF 8J6899 PUMP CONTROL HEAD GROUP SHOWN ON PAGE 158
3G3925 SLEEVE & 3G3924 SPOOL ARE REPLACED BY 3G3928 SHOWN ON PAGE 159
c231687 HEBP1321
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
 

#HEBP13210459
 

8J-6899: HEAD GP-PUMP CONTROL

8J6899 PUMP CONTROL HEAD GROUP
PART OF 8J1905 & 1U4722 PISTON PUMP GROUP SHOWN ON PAGES 156 & 157A
3G3926 VALVE PARTS ARE SHOWN ON PAGE 158
c477126 HEBP1321
8J6899 HEAD GP-PUMP CONTROL Parts scheme
  For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-8002 [5] PLUG-O-RING  
  3J-7354 [5] SEAL-O-RING  
2. 8J-0436 [1] HEAD-PUMP  
3. 8J-0442 [1] COVER  
4. 5K-5959 [2] SEAL-O-RING  
5. 8J-3800 [1] CARTRIDGE  
6. 8J-1898 [5] SHIM  
7. 8J-6305 [1] SPRING (OUTER)  
8. 8J-3819 [1] SPRING (INNER)  
9. 0S-1585 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
10. 8J-2029 [1] SPACER (SMALL)  
11. 8J-0444 [1] COVER  
12. 8J-2028 [1] SPACER (LARGE)  
13. 5P-1480 [6] SEAL-O-RING  
  8J-3817 [6] RING-BACK-UP  
14. 3G-3926 CY [1] VALVE GP-SERVO  
15. 8J-7334 [1] PISTON-ACTUATING  
16. 8J-3816 [1] PISTON AS  
17. 8J-0412 [1] CUP-ROLLER BEARING  
  C   CHANGE FROM PREVIOUS TYPE
  Y   SEPARATE ILLUSTRATION
 

Information:

Tool Operating Manual
Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}
Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
Service Magazine
Cover Plate, Flange are Available for Use During Flow Tests on the Main Hydraulic Pumps {0738, 5070, 5084}
2005/04/25

Caterpillar Parts SIS Catalog 235 :

VALVE GP-RELIEF
9J-3024 VALVE GP-RELIEF
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-PITCH RELIEF
8J-2057 VALVE GP-PITCH RELIEF
FILTER GP-OIL
9J-1212 FILTER GP-OIL
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
VALVE GP-SERVO
3G-3926 VALVE GP-SERVO

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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.
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