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8M8551 RELIEF VALVE GROUP Part of 8S590 Range Transmission Arrangement shown on Page 54 D6C TRACK-TYPE TRACTOR


POWER TRAIN
VALVE GP-RELIEF
VALVE GP-CONTROL
OPERATOR STATION
CONTROL GP-TRANSMISSION
STEERING AND BRAKING SYSTEM
CLUTCH GP-STEERING

TRACK-TYPE TRACTOR D6C TRACK-TYPE TRACTOR 69U
 D6C TRACTOR 69U00316-00612 (MACHINE) UEG0754S D6C 69U   (1972)

POWER TRAIN

VALVE GP-RELIEF
RELIEF VALVE GROUP
2S-1390 RELIEF VALVE GROUP
RELIEF VALVE GROUP
3P-8231 RELIEF VALVE GROUP
VALVE GP-RELIEF
2P-3675 VALVE GP-RELIEF
VALVE GP-RELIEF
8M-8551 VALVE GP-RELIEF
 

#UEG0754S0080
 

8M-8551: VALVE GP-RELIEF

8M8551 RELIEF VALVE GROUP
Part of 8S590 Range Transmission Arrangement shown on Page 54
c90458 UEG0754S
8M8551 VALVE GP-RELIEF Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5M-7908 [1] PLUG ASSEM.  
  3J-1907 [1] "O" RING  
    (PART OF PLUG ASSEM.5M7908)
  8M-8597 [1] SPRING  
  0S-1594 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
  4M-8815 [1] COVER  
  8M-5254 [1] SEAL  
  8M-8598 [1] SPOOL  
  8M-8599 [1] BODY  
 

#UEG0754S0081
 

8M-6347: FLOW CONTROL VALVE GROUP

8M6347 FLOW CONTROL VALVE GROUP
Part of Transmission Hydraulic Control
shown on Page 58
c119202 UEG0754S
8M6347 FLOW CONTROL VALVE GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2P-9198 C [ 1] PIN (SMALL)  
  1J-5799 [ 1] PIN (LARGE)  
  5S-7906 [ 1] STOP  
  8M-6327 [ 1] PLUNGER  
  8M-6325 [ 1] BODY  
  8M-4295 [ 1] SPRING  
  8M-4296 [ 1] STOP  
  8M-6321 [ 1] PLATE  
  0L-1351 [ 2] BOLT  
  5M-2894 [ 2] WASHER  
    INDICATES CHANGE
 

#UEG0754S0082
 

8M-6349: PRESSURE CONTROL GROUP

8M6349 PRESSURE CONTROL GROUP
Serial No. 69U316 to 69U366 inclusive
Part of Transmission Hydraulic Control shown on Page 58
Only separate parts serviced. When complete Group is required order 1P9674 shown on Page 61
c113892 UEG0754S
8M6349 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  9S-2753 [ 1] COVER  
  5M-7915 [ 4] SPACER (036 THICK)  
  5M-7914 [ 3] SPACER (010 THICK)  
  9M-2032 [ 1] SPRING (blue)  
  8S-9198 [ 1] PISTON  
  2S-3537 [ 1] BODY ASSEM.  
  9M-2025 [ 1] SPOOL  
  8M-6291 [ 1] BODY  
  5M-6214 [ 2] PLUG  
  2M-7041 [ 1] SLUG  
  7M-8509 [ 1] STOP  
  1J-5799 [ 1] PIN  
  0T-0055 [ 4] BOLT  
  8M-4432 [ 2] SEAL  
  8S-9197 [ 1] VALVE  
  2S-3535 [ 1] RETAINER  
    (PART OF BODY ASSEM. 2S3537)
  8M-4432 [ 1] SEAL  
  8M-8132 [ 1] SPRING (RED)  
  8M-6303 [ 1] PLUNGER  
  5M-7852 [ 1] STOP  
  2M-3521 [ 1] PIN  
  9H-6687 [ 1] PIN  
 

#UEG0754S0083
 

1P-6590: PRESSURE CONTROL GROUP

1P6590 PRESSURE CONTROL GROUP
Serial No. 69U367 to 69U504 inclusive. Test No. 30899 to 36420 inclusive
Part of Transmission Hydraulic Control shown on Page 58A
Only separate parts serviced. When complete Group is required order 1P9674 shown on Pages 60D & 61
c150528 UEG0754S
1P6590 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2M-7041 [1] SLUG  
2. 1P-8612 [1] STOP  
3. 9M-2025 [1] SPOOL  
4. 2P-5744 [1] SPRING  
5. 8S-9198 [1] PISTON  
6. 5M-7915 [4] SPACER (.030 in. thick)  
  5M-7914 [3] SPACER (.010 in. thick)  
7. 8M-5248 [3] SEAL  
8. 9S-2753 [1] COVER  
9. 8S-9197 [1] VALVE  
10. 1P-9665 [1] RETAINER  
11. 6D-3036 [2] DOWEL  
12. 8M-8132 [1] SPRING  
13. 1P-6593 [1] SPOOL ASSEM.  
    (Includes)
14. 1S-2121 [1] PLUNGER  
15. 4M-2381 [1] SPRING  
16. 8S-0508 [1] RETAINER  
17. 2M-8191 [1] RING  
18. 1P-8573 [1] COVER  
19. 0S-1594 [7] BOLT  
20. 5M-6214 [2] PLUG  
 

#UEG0754S0084
 

1P-6590: PRESSURE CONTROL GROUP

1P6590 PRESSURE CONTROL GROUP
Serial No. 69U505 to 69U536 and 69U543 inclusive and Test No. 36421 to 37635 inclusive. Part of Transmission
Hydraulic Control shown on Page 58A. For Field Replacement order 1P9674 shown on Pages 60D and 61
c155855 UEG0754S
1P6590 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2M-7041 [1] SLUG  
2. 1P-8612 [1] STOP  
3. 9M-2025 [1] SPOOL  
4. 2P-5744 [1] SPRING  
5. 8S-9198 [1] PISTON  
6. 5M-7915 [4] SPACER (.030 in. thick)  
  5M-7914 [3] SPACER (.010 in. thick)  
7. 8M-5248 [3] SEAL  
8. 9S-2753 [1] COVER  
9. 8S-9197 [1] VALVE  
10. 1P-9665 [1] RETAINER  
11. 6D-3036 [2] DOWEL  
12. 8M-8132 [1] SPRING  
13. 6P-4711 C [1] SPOOL ASSEM.  
    (Includes)
14. 6P-8848 [1] PLUNGER  
15. 9H-2367 [1] SPRING  
16. 6P-4717 [1] SLEEVE  
17. 1L-3162 [1] RING  
18. 1P-8573 [1] COVER  
19. 0S-1594 [7] BOLT  
20. 5M-6214 [2] PLUG  
  C   INDICATES CHANGE
 

#UEG0754S0085
 

1P-6590: PRESSURE CONTROL GROUP

1P6590 PRESSURE CONTROL GROUP
Serial No. 69U537 to 69U542 and 69U544-Up and Test No. 37636-Up. Part of Transmission Hydraulic
Control shown on Page 58A. For Field Replacement order 1P9674 shown on Pages 60D and 61
c157623 UEG0754S
1P6590 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2M-7041 [ 1] SLUG  
2. 1P-8612 [ 1] STOP  
3. 9M-2025 [ 1] SPOOL  
4. 2P-5744 [ 1] SPRING  
5. 8S-9198 [ 1] PISTON  
6. 5M-7915 [ 4] SPACER 0.77 mm(.030 in.) thick  
  5M-7914 [ 3] SPACER 0.26 mm(.010 in.) thick  
7. 8M-5248 [ 3] SEAL  
8. 9S-2753 [ 1] COVER  
9. 8S-9197 [ 1] VALVE  
10. 1P-9665 [ 1] RETAINER  
11. 6D-3036 [ 2] DOWEL  
12. 8M-8132 [ 1] SPRING  
13. 6P-4711 [ 1] SPOOL ASSEM  
    (Includes)
14. 6P-8848 [ 1] PLUNGER  
15. 9H-2367 [ 1] SPRING  
16. 6P-4717 [ 1] SLEEVE  
17. 2M-8191 C [ 1] RING  
18. 1P-8573 [ 1] COVER  
19. 0S-1594 [ 7] BOLT  
20. 5M-6214 [ 2] PLUG  
    INDICATES CHANGE
 

#UEG0754S0086
 

1P-9674: PRESSURE CONTROL GROUP

1P9674 PRESSURE CONTROL GROUP--Type 1
Provides Field Replacement for 8M6349 and 1P6590 Pressure Control Groups shown on Pages 60, 60A & 60C
c150522 UEG0754S
1P9674 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1594 [9] BOLT  
2. 5M-2894 [2] WASHER  
3. 8M-4433 [1] SEAL  
4. 1P-9666 [1] COVER  
5. 9M-2025 [1] SPOOL  
6. 2P-5744 [1] SPRING  
7. 8S-9198 [1] PISTON  
8. 8M-5248 [3] SEAL  
9. 5M-7914 [3] SPACER (.010 in. thick)  
  5M-7915 [4] SPACER (.036 in. thick)  
10. 9S-2753 [1] COVER  
11. 8S-9197 [1] VALVE  
12. 6D-3036 [2] DOWEL  
13. 1P-9665 [1] RETAINER  
14. 8M-8132 [1] SPRING  
15. 1P-6593 [1] SPOOL ASSEM.  
    (Includes)
16. 1S-2121 [1] PLUNGER  
17. 4M-2381 [1] SPRING  
18. 8S-0508 [1] RETAINER  
19. 2M-8191 [1] RING  
20. 1P-8573 [1] COVER  
21. 2M-7041 [1] SLUG  
22. 1P-8612 [1] STOP  
  5M-6214 H [2] PLUG  
  4B-9880 H [2] BALL  
  H   NOT SHOWN
 

#UEG0754S0087
 

1P-9674: PRESSURE CONTROL GROUP

1P9674 PRESSURE CONTROL GROUP--Type 2
Provides Field Replacement for 8M6349 and 1P6590 Pressure Control Groups shown on Pages 60, 60A & 60C
c152757 UEG0754S
1P9674 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1594 [9] BOLT  
2. 5M-2894 [2] WASHER  
3. 8M-4433 [1] SEAL  
4. 1P-9666 [1] COVER  
5. 9M-2025 [1] SPOOL  
6. 2P-5744 [1] SPRING  
7. 8S-9198 [1] PISTON  
8. 8M-5248 [3] SEAL  
9. 5M-7914 [3] SPACER (.010 in. thick)  
  5M-7915 [4] SPACER (.036 in. thick)  
10. 9S-2753 [1] COVER  
11. 8S-9197 [1] VALVE  
12. 6D-3036 [2] DOWEL  
13. 1P-9665 [1] RETAINER  
14. 8M-8132 [1] SPRING  
15. 6P-4711 C [1] SPOOL ASSEM.  
    (Includes)
16. 6P-8848 [1] PLUNGER  
17. 9H-2367 [1] SPRING  
18. 6P-4717 [1] SLEEVE  
19. 2M-8191 [1] RING  
20. 1P-8573 [1] COVER  
21. 2M-7041 [1] SLUG  
22. 1P-8612 [1] STOP  
  5M-6214 H [2] PLUG  
  4B-9880 H [2] BALL  
  C   INDICATES CHANGE
  H   NOT SHOWN
 

#UEG0754S0088
 

3P-3778: TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM (3P3778 N/S)--Part 1 of 2
Serial No. 69U316 to 69U322 inclusive
9M8669 Screen and 2S8373 Valve parts are shown on Pages 67 and 70
c144082 UEG0754S
3P3778 TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0L-1143 [1] BOLT  
2. 3B-4506 [10] LOCKWASHER  
3. 0S-1594 [2] BOLT  
4. 8M-7998 [1] GUIDE ASSEM.  
5. 8M-7994 [1] PLUNGER ASSEM.  
6. 0S-1588 [14] BOLT  
7. 8M-4987 [3] SEAL  
8. 1A-2029 [16] BOLT  
9. 5S-0763 [1] HOSE ASSEM. (29.38" Long Overall)  
10. 9M-9037 [1] FLANGE  
  1S-0004 [1] SEAL  
11. 9S-9420 [4] CLAMP  
12. 5S-0786 [1] HOSE ASSEM. (10.30" Long Overall)  
13. 1P-4577 [2] FLANGE  
14. 1P-4576 [4] FLANGE  
  8M-4988 [2] SEAL  
15. 9S-9447 [1] TUBE ASSEM.  
16. 9S-9449 [1] TUBE ASSEM.  
17. 4B-4278 [3] WASHER  
18. 9M-8669 Y [1] SCREEN GROUP  
    (Separate Illustration)
19. 9M-2968 [1] TUBE ASSEM.  
20. 9M-2740 [1] TUBE ASSEM.  
21. 1F-3133 [1] GASKET  
22. 8M-4436 [1] SEAL  
23. 8M-4390 [1] SEAL  
24. 2S-8373 CY [1] VALVE GROUP  
    (Separate Illustration)
25. 0T-0102 [2] BOLT  
26. 9M-3019 [1] TUBE (Right Hand)  
  2P-1878 [1] TUBE (Left Hand)  
27. 7M-1588 [1] GASKET  
28. 3S-2053 [1] TUBE ASSEM.  
29. 5B-9603 [1] BOLT  
30. 8M-4448 [1] SEAL  
31. 8M-4445 [1] SEAL  
32. 3B-9004 [2] FITTING  
  8F-8997 [1] NUT  
33. 8B-6127 [2] CLIP  
34. 2S-6683 H HOSE (Use as Required) 16"  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
  H   ORDER BY THE INCH
 

#UEG0754S0089
 

3P-3778: TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM (3P3778 N/S)--Part 2 of 2
Serial No. 69U316 to 69U322 inclusive
9S9384 Pump and 3S1741 Filter parts are shown on Pages 66 & 67
c140503 UEG0754S
3P3778 TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM Parts scheme
  For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8M-4987 [6] SEAL  
2. 1A-2029 [7] BOLT  
3. 3B-4506 [32] LOCKWASHER  
4. 9M-5962 [1] ELBOW  
5. 0S-1571 [1] BOLT  
6. 0S-1588 [14] BOLT  
7. 9S-9393 [1] TUBE ASSEM.  
8. 8M-4436 [1] SEAL  
9. 9S-9384 Y [1] PUMP GROUP  
    (Separate Illustration)
10. 1P-1556 [1] HOSE ASSEM.  
11. 1P-4577 [6] FLANGE  
12. 4B-4278 [2] WASHER  
13. 7S-1636 [1] PLATE  
14. 1D-4717 [6] NUT  
15. 3S-1741 Y [1] FILTER GROUP  
    (Separate Illustration)
16. 8S-2957 [1] BRACKET  
17. 0S-1619 [2] BOLT  
18. 2K-5232 [1] SPACER (1.81 in long)  
19. 6F-0127 [1] SPACER (1.12 in long)  
20. 9S-9407 [1] TUBE ASSEM.  
21. 0L-2070 [2] BOLT  
22. 9M-3832 [1] PLATE  
23. 5S-0803 [1] HOSE ASSEM.  
24. 8F-8882 [1] SEAL  
  Y   SEPARATE ILLUSTRATION
 

Information:

Specifications
Sequence Relief Valve<BR> (Power Shift) (2S625 and 2S1390)
D6 TRACTOR POWER TRAIN
Lubrication Relief Valve For Power Shift Transmission<BR> (8M8551)
D6 TRACTOR POWER TRAIN
Relief Valve For Converter Outlet<BR> (Power Shift) (2S1386 and 2P3675)
D6 TRACTOR POWER TRAIN
Reuse And Salvage Guidelines
Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}
Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}
Bench Test Procedures
Disassembly and Assembly
Sequence Relief Valve (Powershift)
D6 TRACTOR POWER TRAIN
Lubrication Relief Valve (Power Shift)
D6 TRACTOR POWER TRAIN
Torque Converter Outlet Relief Valve (Power Shift)
D6 TRACTOR POWER TRAIN
Service Magazine
Cartridge Relief Valve Adjustments{5069}
1978/09/04

Caterpillar Parts SIS Catalog D6C :

VALVE GP-SELECTOR
1P-6591 VALVE GP-SELECTOR
SELECTOR AND SAFETY VALVE GROUP
8M-6348 SELECTOR AND SAFETY VALVE GROUP
CONTROL GP-TRANSMISSION HYD
8M-6350 CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
8M-6350 CONTROL GP-TRANSMISSION HYD
9M-2040 PLANETARY TRANSMISSION GROUP
PLANETARY TRANSMISSION GROUP
9M-2040 PLANETARY TRANSMISSION GROUP
TRANSFER GEARS
8S-0572 TRANSFER GEARS
RANGE TRANSMISSION ARRANGEMENT
8S-0590 RANGE TRANSMISSION ARRANGEMENT
FLOW CONTROL VALVE GROUP
8M-6347 FLOW CONTROL VALVE GROUP
PRESSURE CONTROL GROUP
8M-6349 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
1P-6590 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
1P-6590 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
1P-6590 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
1P-9674 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
1P-9674 PRESSURE CONTROL GROUP
TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM
3P-3778 TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

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- Crawler dozers
QUINN COMPANY
 
22.000 
Caterpillar D6C, Bulldozer, Bau-Und Bergbauausrüstung


 
25.522 
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19,500 
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N C MACHINERY CO.
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