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GEAR PUMP (7J4950 N/S) Part of Pump, Tank & Lines shown on Pages 116 & 118 12F MOTOR GRADER




HYDRAULIC SYSTEM

PUMP GP
 

#UEG0573S0180
 

7J-4950: GEAR PUMP

GEAR PUMP (7J4950 N/S)
Part of Pump, Tank & Lines shown on Pages 116 & 118
c131498 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7J-4918 Y [1] PUMP GROUP  
    (See Separate Illustration)
2. 1A-2029 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
3. 6D-1004 [1] GASKET  
4. 5L-9841 [1] LOCK  
5. 1B-4430 [1] NUT  
6. 7J-4949 [1] GEAR (36 Teeth)  
7. 7J-4948 [1] ADAPTER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0573S0181
 

7J-4918: GEAR PUMP GROUP

7J4918 GEAR PUMP GROUP
Part of Gear Pump
c131499 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1D-4541 [2] BOLT (3" long)  
  2S-5818 [2] BOLT (12 Point Head)  
2. 1D-4538 [4] BOLT (2.25" long)  
3. 7J-9309 [1] COUPLING  
4. 7J-6063 [8] BOLT  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  7J-4917 [1] KIT (Seal)  
    (Includes Spring, Diaphragm, Gaskets, Seals, Thrust Plate and Balls)
 

#UEG0573S0182
 

6D-8202: GEAR PUMP ASSEMBLY

6D8202 GEAR PUMP ASSEMBLY
Part of Power Control shown on Page 125
c103677 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6D-4961 [1] GEAR ASSEM. (Idler)  
2. 6D-0032 [1] KEY  
3. 6D-0047 [1] NUT  
4. 4B-5270 [1] WASHER  
5. 6D-4962 [1] GEAR  
6. 6D-8225 [1] HOUSING ASSEM.  
7. 4J-7480 [1] PLUG ASSEM.  
  4J-7533 [1] SEAL  
    (Part of 4J7480 Plug Assem.)
8. 6D-0044 [2] DOWEL  
9. 6D-4959 [1] GEAR ASSEM. (Drive)  
10. 6D-0034 [1] COVER ASSEM.  
11. 1B-7182 [4] BOLT  
12. 3H-9675 [1] PIN  
    The following repair kit is available:
  6D-0051 [1] KIT (Seal Repair)  
    (Includes Gasket, Diaphragm Seal Plate and "O" Ring)
 

#UEG0573S0183
 

7D-2660: POWER CONTROL

POWER CONTROL (7D2660 N/S)-Part 1 of 4
Refer also to Pages 292 through 311 for special parts
c154497 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-8704 [4] KEY  
2. 5D-8556 [2] LEVER (L.H.)  
3. 0S-1571 [4] BOLT  
4. 6D-0679 [4] KNOB  
5. 5D-8555 [2] LEVER  
6. 1B-2886 [15] BOLT  
7. 3B-4508 [21] LOCKWASHER  
8. 9S-6130 [3] PLUG  
9. 2S-4078 [3] SEAL  
10. 7D-0243 [1] COVER ASSEM.  
11. 1D-4719 [6] NUT  
12. 6D-6197 [2] SHIM .005 in. (0.13 mm) thick  
  6D-6198 [3] SHIM .010 in.(0.26 mm) thick  
13. 6D-1733 [1] CONE  
14. 6D-1734 [1] CUP  
15. 7D-2637 [1] GEAR (24 teeth)  
16. 6D-6195 [1] CARRIER  
17. 6D-6192 [1] GEAR (28 Teeth)  
  1B-8714 [1] KEY  
18. 6D-6193 [2] SHIM .005 in. (0.13 mm) thick  
  6D-6194 [1] SHIM .010 in. (0.26 mm) thick  
19. 1H-8037 [1] YOKE  
20. 2K-4821 [1] NUT  
21. 2J-8333 [1] SEAL  
22. 2H-0929 [3] CUP  
23. 2H-0930 [3] CONE  
24. 6D-6196 [1] WORM  
25. 2H-6338 [1] SEAL  
26. 5F-5434 [1] VENT ASSEM.  
  2D-1683 [1] FITTING  
27. 6D-6204 [1] COVER ASSEM.  
28. 2L-9315 [1] GUIDE  
29. 6D-6202 [1] GASKET  
30. 0S-1594 [13] BOLT  
31. 7H-1861 [4] LOCK  
32. 6D-6199 [1] CAGE  
33. 9S-4190 [3] PLUG  
  2M-9780 [3] SEAL  
34. 3B-4506 [12] LOCKWASHER  
35. 6D-6182 [1] PLUNGER ASSEM.  
36. 0S-1625 [6] BOLT  
  1D-4720 [6] NUT  
  3B-4510 [6] LOCKWASHER  
37. 4J-4742 [1] BODY ASSEM.  
  7M-8485 [1] SEAL  
38. 2M-4453 [2] SEAL  
39. 9S-8004 [4] PLUG  
  3J-1907 [4] SEAL  
40. 0L-1351 [3] BOLT  
41. 7D-3901 [2] SHIM .003 in. (0.08 mm) thick  
42. 7D-3899 [2] SHIM .003 in. (0.08 mm) thick  
 

#UEG0573S0184
 

7D-2660: POWER CONTROL

POWER CONTROL (7D2660 N/S)-Part 2 of 4
6D8202 Pump parts are shown on Page 123
c131429 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2H-5330 [8] BOLT  
2. 3B-4506 [18] LOCKWASHER  
3. 6D-3928 [2] HOUSING ASSEM.  
  2D-8641 [2] PIN  
    (1 in each 6D3928 Housing Assem.)
  6D-3929 [2] GASKET  
4. 1B-8704 [4] KEY  
5. 4J-3044 [4] BEARING  
6. 5D-8553 [4] LEVER  
  4D-5531 [4] BOLT  
7. 4K-4114 [4] SEAL  
8. 5D-8552 [4] SHAFT  
9. 4B-3671 [4] BEARING  
10. 5D-8508 [1] GASKET  
11. 0L-2070 [8] BOLT  
12. 2B-0947 [15] BOLT  
13. 2K-4472 [1] SEAL  
14. 6D-3248 [1] BRACKET (Left Hand)  
15. 0S-1589 [4] BOLT  
  1D-4720 [4] NUT  
16. 3B-4510 [8] LOCKWASHER  
17. 0T-0102 [2] BOLT  
18. 0L-0364 [2] LOCK  
19. 0L-1351 [2] BOLT  
20. 7D-2642 [1] COVER ASSEM.  
21. 6D-4585 [4] BEARING  
    (Part of 7D2642 Assem.)
22. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
23. 6D-4900 [1] COVER  
24. 0S-1595 [4] BOLT  
25. 3B-4508 [19] LOCKWASHER  
26. 2D-8422 [1] SPACER  
27. 5D-8539 [1] TUBE ASSEM. (Right Hand)  
  5D-8540 [1] TUBE ASSEM. (Left Hand)  
28. 5F-1678 [4] SEAL  
29. 1H-5728 [2] SEAL  
30. 6D-8202 Y [2] PUMP ASSEM.  
    (See Separate Illustration)
31. 4J-5268 [4] SEAL  
32. 5F-7054 [2] SEAL  
33. 4F-7391 [2] SEAL  
34. 6D-5769 [2] SLEEVE  
35. 6D-3247 [1] BRACKET (Right Hand)  
36. 0S-1566 [4] BOLT  
37. 5F-4434 [1] VENT ASSEM.  
38. 9S-4185 [2] PLUG  
  3K-0360 [2] SEAL  
  Y   SEPARATE ILLUSTRATION
 

#UEG0573S0185
 

7D-2660: POWER CONTROL

POWER CONTROL (7D2660 N/S)-As Viewed from Right Hand Side of Machine-Part 3 of 4
c111760 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5D-8507 [1] GASKET  
2. 2M-4453 [16] SEAL  
3. 7D-2665 [1] HOUSING ASSEM.  
4. 3B-2225 [4] DOWEL  
5. 2A-0309 [4] DOWEL  
6. 7D-0246 [4] BEARING  
7. 2M-2858 R [1] SEAL GROUP  
  1M-3097 [2] RING  
8. 9S-1366 [4] BOLT  
9. 2M-0849 [4] WASHER  
10. 7D-2640 [1] COVER ASSEM.  
11. 6D-4585 [4] BEARING  
12. 0L-1143 [32] BOLT  
13. 7D-3772 [2] GEAR ASSEM. (38 Teeth)  
14. 7D-5316 [2] BEARING  
15. 6D-4621 [2] WASHER (.045" Thick)  
  6D-6134 [2] WASHER (.052" Thick)  
  5D-8528 [2] WASHER (.059" Thick)  
  5D-8529 [2] WASHER (.066" Thick)  
  6D-6135 [2] WASHER (.067" Thick)  
  6D-4622 [2] WASHER (.075" Thick)  
  6D-4623 [2] WASHER (.090" Thick)  
16. 7D-2639 [1] SHAFT  
17. 4F-7389 [1] SEAL  
18. 6D-4886 [1] ADAPTER  
19. 0S-1594 [7] BOLT  
  3B-4506 [7] LOCKWASHER  
20. 3K-4897 [2] PIN  
21. 6D-4934 [1] SCREEN ASSEM.  
22. 6D-4930 [1] RETAINER  
23. 0L-1045 [1] SPRING  
24. 6D-4938 [1] TUBE ASSEM.  
  8M-7160 [3] MAGNET  
25. 5J-8877 [1] ELEMENT ASSEM. (Disposable)  
26. 6D-4929 [1] SEAT  
27. 3K-4056 [1] SPRING  
28. 6D-5723 [1] SEAT ASSEM.  
29. 6D-4957 [1] BOLT  
  1H-1023 [1] SEAL  
30. 6D-4933 [1] RETAINER  
31. 0S-1595 [3] BOLT  
  3B-4508 [3] LOCKWASHER  
32. 1H-9696 [2] SEAL  
33. 5L-4776 [1] SEAL  
34. 7D-2638 [1] SHAFT  
35. 7D-2631 [1] HOUSING ASSEM.  
  0L-2061 [2] DOWEL  
36. 2B-2994 [2] DOWEL  
37. 5M-1932 [6] STUD  
38. 7D-2634 [2] SHIM (.005" Thick)  
39. 7D-2635 [4] SHIM (.010" Thick)  
40. 2K-4472 [1] SEAL  
41. 0S-1590 [10] BOLT  
  2K-4973 [10] NUT  
  5M-2894 [10] WASHER  
42. 4F-0559 [1] CONE  
43. 6B-3224 [2] CUP  
44. 7D-2633 [1] CAGE  
45. 7D-2636 [1] HUB  
46. 5D-9662 [1] CONE  
47. 7D-0249 [1] PINION  
48. 7D-0247 [1] RETAINER ASSEM.  
  2A-3348 [1] PIN  
49. 6D-3778 [1] PAD  
50. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0573S0186
 

7D-2660: POWER CONTROL

POWER CONTROL (7D2660 N/S)-As Viewed from R.H. side of Machine-Part 4 of 4
7J9283 & 7J9284 Valve parts are shown on Page 128
c131431 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7D-2655 [4] HOUSING ASSEM.  
  6B-6863 [4] PIN  
    (1 in each 7D2655 Assem.)
2. 7J-9284 [1] VALVE GROUP (L.H.)  
  7J-9283 Y [1] VALVE GROUP (R.H.)  
    (See Separate Illustration)
3. 0T-0573 [8] BOLT  
  3B-4506 [8] LOCKWASHER  
4. 7D-8213 [1] HOUSING ASSEM. (L.H.)  
  6B-6863 [3] PIN  
    (Part of 7D8213 Assem.)
  7D-8214 [1] HOUSING ASSEM. (R.H.)  
  6B-6863 [5] PIN  
    (Part of 7D8214 Assem.)
5. 2J-0157 [10] SEAL  
6. 6D-4584 [8] WASHER  
7. 7D-2659 [8] SPRING  
8. 7D-2657 [4] HOUSING  
9. 6D-9084 [8] WASHER  
10. 7D-2649 [8] CLUTCH  
11. 7D-2645 [8] GEAR ASSEM. (35 & 46 Teeth)  
12. 7D-3818 [16] BEARING  
    (2 in each 7D2645 Assem.)
13. 1J-6474 [8] RING  
14. 7D-0088 [4] YOKE  
15. 8B-4967 [4] SEAL  
16. 0L-1329 [4] BOLT  
17. 6D-9081 [4] RETAINER  
18. 2M-2858 R [4] SEAL GROUP  
  1M-3097 [8] RING  
    (2 in each 2M2858 Group)
19. 7D-0848 [8] WASHER  
20. 2J-8172 [8] RING  
21. 6D-4536 [56] DISC (Inner)  
22. 6D-4535 [56] DISC (Outer)  
23. 6D-8738 [8] RETAINER  
24. 6D-0469 [4] SEAL (Plastic)  
25. 2J-8163 [8] SEAL (Rubber)  
26. 7D-2653 [4] PISTON ASSEM.  
27. 6D-4581 [4] BEARING  
    (1 in each 7D2653 Assem.)
28. 6D-0473 [8] SEAL (Plastic)  
  4H-9105 [8] SEAL (Rubber)  
29. 1A-5822 [4] BOLT  
  2M-0849 [4] WASHER  
30. 6D-8977 [24] DISC (Inner)  
31. 5D-8526 [28] DISC (Outer)  
32. 9S-4181 [1] PLUG (R.H. HOUSING)  
  7M-8485 [1] SEAL  
  7D-7761 [1] ADAPTER (L.H. HOUSING)  
  3H-4987 [1] GASKET  
33. 6D-5512 [4] SEAL (Plastic)  
34. 7D-2651 [4] PISTON ASSEM.  
35. 6D-4581 [4] BEARING  
    (1 in each 7D2651 Assem.)
36. 7D-2644 [4] SHAFT  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#UEG0573S0187
 

7J-9283: CONTROL VALVE GROUP

7J9283 CONTROL VALVE GROUP-R.H.
Part of Power Control shown on Page 127
c131436 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7J-9915 Y [1] VALVE GROUP  
    (See Separate Illustration)
  7J-8283 [1] VALVE GROUP (R.H.)  
2. [1] BODY  
3. [2] STEM  
4. 5J-7288 [1] PLATE  
5. 5J-7287 [1] LOCK  
6. 0S-1617 [3] BOLT  
7. 4F-4893 [2] SPRING  
8. 6J-2366 [8] RETAINER  
9. 6J-0923 [1] LOCK  
10. 1B-7182 [3] BOLT  
11. 6J-0922 [1] COVER  
12. 6D-4537 [1] COVER  
13. 9S-8005 [1] PLUG  
14. 3K-0360 [1] SEAL  
  Y   SEPARATE ILLUSTRATION
 

#UEG0573S0188
 

7J-9284: CONTROL VALVE GROUP

7J9284 CONTROL VALVE GROUP-L.H.
Part of Power Control shown on Page 127
c131437 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7J-9915 Y [1] VALVE GROUP  
    (See Separate Illustration)
2. 9S-8005 [1] PLUG  
3. 3K-0360 [1] SEAL  
4. 6D-4537 [1] COVER  
5. 6J-0922 [1] COVER  
6. 1B-7182 [3] BOLT  
7. 6J-0923 [1] LOCK  
8. 6J-2366 [8] RETAINER  
9. 4F-4893 [2] SPRING  
10. 0S-1617 [3] BOLT  
11. 5J-7287 [1] LOCK  
12. 5J-7288 [1] PLATE  
  7J-8284 [1] VALVE GROUP  
13. [2] STEM  
14. [1] BODY  
  Y   SEPARATE ILLUSTRATION
 

#UEG0573S0189
 

7J-9915: RELIEF VALVE GROUP

7J9915 RELIEF VALVE GROUP
Part of 7J9283 & 7J9284 Control Valve Groups
c131438 UEG0573S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2M-9780 [1] SEAL  
2. 2H-3932 [1] SEAL  
3. 7J-1953 [1] RETAINER  
4. 5F-1678 [1] SEAL  
5. 3J-7470 [1] SHIM (.048" Thick)  
6. 7J-9914 [1] PLUG  
7. 3J-7473 [6] SHIM (.005" Thick)  
8. 2J-6089 [1] SPRING  
  7J-6124 [1] VALVE GROUP  
9. [1] BODY ASSEM.  
10. 7J-6055 [1] VALVE  
 

Information:

Special Instruction
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Nexus Gear Pump Porting{5073}
Nexus Gear Pump Porting{5073}
Repair Process for Hydraulic Gear Pumps {5073}
Repair Process for Hydraulic Gear Pumps {5073}
Test Specifications for Vane Cartridges{0784, 5058, 5070}
Test Specifications for Vane Cartridges{0784, 5058, 5070}
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}
Reuse And Salvage Guidelines
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Vane Type Hydraulic Pumps {5055}
Vane Type Hydraulic Pumps {5055}
Repair Process for Hydraulic Gear Pumps {5073}
Repair Process for Hydraulic Gear Pumps {5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 9, 10, and 11) {5061, 506G, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 9, 10, and 11) {5061, 506G, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Removing and Installing Bushings and Pressure Plates in Hydraulic Gear Pumps {5073}
Removing and Installing Bushings and Pressure Plates in Hydraulic Gear Pumps {5073}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
Thermal Spray Procedures for Tyrone Drive Shaft (Pump Gear){0679, 3066, 5073}
Thermal Spray Procedures for Tyrone Drive Shaft (Pump Gear){0679, 3066, 5073}
Bench Test Procedures
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Bench Test Procedure for Gear Pumps {5073}
Bench Test Procedure for Gear Pumps {5073}
Bench Test Procedure for Vane Pumps {5055}
Bench Test Procedure for Vane Pumps {5055}
Service Magazine

Caterpillar Parts SIS Catalog 12F :

Truck sale:

149.800 
Caterpillar 312F, Raupenbagger, Bau-Und Bergbauausrüstung
- Crawler excavators
YANCEY BROS. CO.
13,000 
Caterpillar 12F, Construction
- motor graders
ALTORFER INC.
159,900 
Caterpillar 312F GC, Construction
- Crawler Excavators
N C MACHINERY CO.
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