3G6846 VANE PUMP GROUP--Type 1 Serial No. 68K1232-Up Part of 2G9670 Vane Pump Group shown on Page 157B 3G2747 Cartridge parts are shown on Page 157D 657B



STEERING SYSTEM
PUMP GP
SERVICE EQUIPMENT AND SUPPLIES
CARTRIDGE KITS
STEERING SYSTEM
CYLINDER GP
BRAKING SYSTEM
VALVE GP

WHEEL TRACTOR 657B WHEEL TRACTOR 68K
 657B TRACTOR 68K00893-UP (MACHINE) POWERED BY D346 ENGINE UEG0879S 657B 68K   (1969)

STEERING SYSTEM

PUMP GP
HYDRAULIC PUMP ASSEMBLY
7J-1920 HYDRAULIC PUMP ASSEMBLY
VANE PUMP GROUP
2G-9670 VANE PUMP GROUP
PUMP GP-VANE
3G-6846 PUMP GP-VANE
PUMP GP-VANE
3G-6846 PUMP GP-VANE
CARTRIDGE GROUP
3G-2747 CARTRIDGE GROUP
CARTRIDGE GP
3G-7660 CARTRIDGE GP
 

#UEG0879S0580
 

3G-6846: PUMP GP-VANE

3G6846 VANE PUMP GROUP--Type 1
Serial No. 68K1232-Up
Part of 2G9670 Vane Pump Group shown on Page 157B
3G2747 Cartridge parts are shown on Page 157D
c176293 UEG0879S
3G6846 PUMP GP-VANE Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 1D-4617 [4] BOLT  
2. 4J-1395 [1] COVER  
3. 3J-7719 [1] RING (outer)  
4. 3L-1425 [1] BEARING  
5. 2J-7763 [1] WASHER  
6. 9J-5120 [1] BODY  
7. 5P-0904 [1] SEAL  
8. 3G-2325 [1] SEAL  
9. 9J-5100 [1] SHAFT  
10. 3G-2632 [1] PLUG  
11. 1J-6474 [1] RING (inner)  
12. 3G-2747 Y [1] CARTRIDGE GROUP  
    (Separate Illustration)
  Y   SEPARATE ILLUSTRATION
 

#UEG0879S0581
 

3G-6846: PUMP GP-VANE

3G6846 VANE PUMP GROUP--Type 2
Serial No. 68K1232-Up
Part of 2G9670 Vane Pump Group shown on Page 157B
3G7660 Cartridge parts are shown on Page 157D
c178739 UEG0879S
3G6846 PUMP GP-VANE Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 1D-4617 [4] BOLT  
2. 4J-1395 [1] COVER  
3. 3J-7719 [1] RING (outer)  
4. 3L-1425 [1] BEARING  
5. 2J-7763 [1] WASHER  
6. 9J-5120 [1] BODY  
7. 5P-0904 [1] SEAL  
8. 6V-2318 C [1] SEAL  
9. 9J-5100 [1] SHAFT  
10. 3G-7242 C [1] PLUG  
11. 1J-6474 [1] RING (inner)  
12. 3G-7660 RYC [1] CARTRIDGE GROUP  
    (Separate Illustration)
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  1U-0381 C [1] FLEX PLATE KIT  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#UEG0879S0582
 

3G-2747: CARTRIDGE GROUP

3G2747 CARTRIDGE GROUP--189 L/min (50 GPM)--Replaced by 3G7660
Serial No. 1232-Up
Part of 3G6846 Vane Pump shown on Page 157C
c165288 UEG0879S
3G2747 CARTRIDGE GROUP Parts scheme
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Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 3G-2241 [4] RETAINER  
2. 3G-2240 [4] SEAL  
3. 2H-3935 [1] SEAL  
4. 3G-2242 [1] SEAL  
5. 1S-0668 [1] RING  
6. 6H-3977 [1] SEAL  
 

#UEG0879S0583
 

3G-7660: CARTRIDGE GP

3G7660 CARTRIDGE GROUP--189 L/min (50 GPM)
Serial No. 68K1232-Up
Part of 3G6846 Vane Pump Group shown on Page 157C
Also provides Field Replacement for 3G2747
c231790 UEG0879S
3G7660 CARTRIDGE GP Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 6V-1179 [1] SEAL  
2. 3G-9201 [4] SEAL  
3. 6V-1195 [1] SEAL  
4. 3G-2242 [1] RING  
5. 6V-1558 [1] RING  
 

#UEG0879S0584
 

5J-8149: STEERING CYLINDER GROUP

5J8149 STEERING CYLINDER GROUP--184 mm (7.25 in.) Bore x 1232 mm (48.50") Stroke--2 Required
Serial No. 68K893 to 1206, 1208, 1209, 1212, 1213, 1215, 1219 and 68K1223 inclusive
c102929 UEG0879S
5J8149 STEERING CYLINDER GROUP Parts scheme
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Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 5J-8144 [1] CYLINDER ASSEM.  
2. 5J-3488 [1] NUT  
3. 1J-2674 [1] RING  
4. 5J-4993 [2] SEAL ASSEM.  
5. 5J-5191 [1] PISTON  
6. 2K-2939 [1] SEAL  
7. 2K-2940 [1] RING  
8. 1D-4609 [8] BOLT  
9. 3B-4512 [8] LOCKWASHER  
10. 5J-8145 [1] HEAD  
11. 5J-8148 R [1] ROD ASSEM.  
12. 6J-6745 [2] BEARING  
    (Part of 5J8148 Rod Assem.)
13. 1J-3540 [1] SEAL  
14. 5J-8275 [1] SEAL  
15. 6J-6553 [1] SEAL  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0879S0585
 

3G-9689: STEERING CYLINDER GROUP

3G9689 STEERING CYLINDER GROUP (Chg 0)--184 mm (7.25 in.) Bore x 1232 mm (48.50 in.) Stroke--2 Required--Type 1
Serial No. 68K1207, 1210, 1211, 1214, 1216 to 1218, 1220 to 1222 and 68K1224-Up
c176368 UEG0879S
3G9689 STEERING CYLINDER GROUP Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 3G-9688 R [1] CYLINDER ASSEM.  
    (Includes)
2. 3G-9687 [1] BEARING  
3. 1J-2674 [1] RING  
4. 5J-4993 [2] SEAL ASSEM.  
5. 5J-5191 [1] PISTON  
6. 2K-2939 [1] SEAL  
7. 2K-2940 [1] RING  
8. 1D-4609 [8] BOLT  
9. 5P-8248 [8] WASHER  
10. 5J-8145 [1] HEAD  
11. 5J-8148 R [1] ROD ASSEM.  
    (Includes)
12. 6J-6745 [2] BEARING  
13. 1J-3540 [1] SEAL  
14. 5J-8275 [1] SEAL  
15. 6J-6553 [1] SEAL  
16. 5J-3488 [1] NUT  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0879S0586
 

3G-9689: STEERING CYLINDER GROUP

3G9689 STEERING CYLINDER GROUP (Chg 1)--184 mm (7.25 in.) Bore x 1232 mm (48.50 in.)--2 Required--Type 2
Serial No. 68K1207, 1210, 1211, 1214, 1216 to 1218, 1220 to 1222 & 68K1224-Up
c178740 UEG0879S
3G9689 STEERING CYLINDER GROUP Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 3G-9688 R [1] CYLINDER ASSEM.  
    (Includes)
2. 3G-9687 [1] BEARING  
3. 3J-7848 C [1] RING  
4. 5J-4993 C [1] SEAL ASSEM.  
5. 7J-9198 C [1] PISTON  
6. 2K-2939 [1] SEAL  
7. 2K-2940 [1] RING  
8. 1D-4609 [8] BOLT  
9. 5P-8248 [8] WASHER  
10. 5J-8145 [1] HEAD  
11. 5J-8148 R [1] ROD ASSEM.  
    (Includes)
12. 6J-6745 [2] BEARING  
13. 1J-3540 [1] SEAL  
14. 5J-8275 [1] SEAL  
15. 6J-6553 [1] SEAL  
16. 5J-3488 [1] NUT  
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0879S0587
 

5J-8606: STEERING SERVO-MASTER CYLINDER GROUP

5J8606 STEERING SERVO-MASTER CYLINDER GROUP--(Change 0)--38 mm (1.5 in.) Bore x 240 mm (9.40 in.) Stroke
Serial No. 68K893 to 68K1154 inclusive
c212309 UEG0879S
5J8606 STEERING SERVO-MASTER CYLINDER GROUP Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 5J-8957 R [1] ROD ASSEM.  
    (Includes)
2. 3H-5823 [2] RING  
3. 9M-3914 [1] BEARING  
4. 6J-1879 [1] WIPER  
5. 6J-1878 [1] PACKING  
6. 8M-8157 [2] SEAL  
7. 9S-8001 C [2] PLUG  
  4J-7533 [2] SEAL  
8. 5J-8774 [1] HEAD  
9. 0S-1571 [4] BOLT  
10. 3B-4506 [12] LOCKWASHER  
11. 7J-4082 [1] BODY ASSEM.  
    (Includes)
  5J-8772 [1] BODY  
12. 2D-6642 [2] BALL  
13. 5J-8004 [2] SPRING  
14. 8M-4437 [2] SEAL  
15. 6J-1833 [2] PLUG  
16. 8M-4435 [2] SEAL  
17. 6J-1832 [12] SHIM  
18. 5J-7157 C [2] VALVE  
19. 5J-8792 [1] HEAD ASSEM.  
    (Includes)
20. 9M-3914 [1] BEARING  
21. 3H-5823 [2] RING  
22. 0S-1588 [4] BOLT  
23. 4J-0521 [2] SEAL  
24. 9M-5048 [1] NUT  
25. 5J-9073 [1] RING  
26. 5J-9822 [2] SEAL ASSEM.  
27. 5J-9072 [1] PISTON  
28. 5J-8335 R [1] BODY  
29. 5J-8773 [1] RETAINER  
30. 0S-1591 [4] BOLT  
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0879S0588
 

3G-6904: CYLINDER GP-STEER

3G6904 STEERING CYLINDER GROUP--(Change 0-2)--38 mm (1.5 in.) Bore x 240 mm (9.40 in.) Stroke
Serial No. 68K1155-Up. 3G6473 Valve parts are shown on Page 159B
c172178 UEG0879S
3G6904 CYLINDER GP-STEER Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 5J-8957 R [1] ROD ASSEM.  
    (Includes)
2. 3H-5823 [2] RING  
3. 5P-9962 [1] BEARING  
4. 6J-1879 [1] WIPER  
5. 6J-1878 C [1] SEAL  
6. 8M-8157 [2] SEAL  
7. 9S-8001 [2] PLUG  
  4J-7533 [2] SEAL  
8. 5J-8774 [1] HEAD  
9. 0S-1571 [4] BOLT  
10. 3G-6473 Y [1] VALVE GROUP  
    (Separate Illustration)
11. 5J-8792 [1] HEAD ASSEM.  
    (Includes)
12. 5P-9962 [1] BEARING  
13. 3H-5823 [2] RING  
14. 1A-2029 C [4] BOLT  
15. 4J-0521 [2] SEAL  
16. 9M-5048 [1] NUT  
17. 5J-9073 [1] RING  
18. 5J-9822 [2] SEAL ASSEM.  
19. 5J-9072 [1] PISTON  
20. 5J-8335 R [1] BODY  
21. 5J-8773 [1] RETAINER  
22. 3B-1915 C [4] BOLT  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#UEG0879S0589
 

3G-6473: VALVE GP-RELIEF

3G6473 RELIEF VALVE GROUP
Serial No. 68K1155-Up
Part of 3G6904 Steering Cylinder Group shown on Page 159A
c221736 UEG0879S
3G6473 VALVE GP-RELIEF Parts scheme
  For full view, you need register

Parts for your 657B WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 3G-6472 [1] BODY ASSEM.  
2. 5J-7157 [2] VALVE  
3. 6J-1833 [2] PLUG  
4. 6J-1832 [12] SHIM (use as required)  
5. 8M-4435 [2] SEAL  
6. 8M-4438 [2] SEAL  
7. 5J-8004 [2] SPRING  
8. 3G-6470 [2] RETAINER  
9. 2D-6642 [2] BALL  
 

Information:

Caterpillar Parts SIS Catalog 657B :

VANE PUMP GROUP
2G-9670 VANE PUMP GROUP
VALVE GP
9J-6346 VALVE GP
VALVE GP
9J-8225 VALVE GP
VALVE GP-CHECK
9J-3383 VALVE GP-CHECK
VALVE GP
3G-7594 VALVE GP
CHECK VALVE GROUP
6J-0349 CHECK VALVE GROUP
HYDRAULIC PUMP ASSEMBLY
7J-1920 HYDRAULIC PUMP ASSEMBLY
STEERING CYLINDER GROUP
5J-7977 STEERING CYLINDER GROUP
PUMP GP-VANE
3G-6846 PUMP GP-VANE
CARTRIDGE GROUP
3G-2747 CARTRIDGE GROUP
CARTRIDGE GP
3G-7660 CARTRIDGE GP
STEERING CYLINDER GROUP
5J-8149 STEERING CYLINDER GROUP
STEERING CYLINDER GROUP
3G-9689 STEERING CYLINDER GROUP
STEERING CYLINDER GROUP
3G-9689 STEERING CYLINDER GROUP
STEERING SERVO-MASTER CYLINDER GROUP
5J-8606 STEERING SERVO-MASTER CYLINDER GROUP
CYLINDER GP-STEER
3G-6904 CYLINDER GP-STEER

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