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6P5034 TRANSMISSION HYDRAULIC CONTROL GROUP--Front View - Part 1 of 2 Serial No. 20W385 to 405, 407 to 428, 430 to 437, 439, 440, 444, 450 & 20W453 inclusive, 21W396 to 21W427 inclusive, 22W531 to 22W812 inclusive and 23W494 to 23W765, 23W768 & 23W773 inclusive. Test No. 735 to 1898 inclusive. Part of 6P3152 Transfer Gear Group shown on Page 88. 6P5033, 5S7936 & 5S7937 Valve and 2P9217 Cylinder parts are shown on Pages 106, 107 & 108 637D




POWER TRAIN

CONTROL GP-TRANSMISSION HYD
 

#SEBP10610320
 

6P-5034: TRANSMISSION HYDRAULIC CONTROL GROUP

6P5034 TRANSMISSION HYDRAULIC CONTROL GROUP--Front View - Part 1 of 2
Serial No. 20W385 to 405, 407 to 428, 430 to 437, 439, 440, 444, 450 & 20W453 inclusive, 21W396 to 21W427 inclusive, 22W531
to 22W812 inclusive and 23W494 to 23W765, 23W768 & 23W773 inclusive. Test No. 735 to 1898 inclusive. Part of 6P3152
Transfer Gear Group shown on Page 88. 6P5033, 5S7936 & 5S7937 Valve and 2P9217 Cylinder parts are shown on Pages 106, 107 & 108
c168630 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-4197 [1] COVER  
2. 2P-9217 Y [1] CYLINDER GROUP  
    (Separate Illustration)
3. 6P-5033 Y [1] PRESSURE CONTROL GROUP  
    (Separate Illustration)
4. 5S-7904 [1] PLATE  
5. 5S-7897 [1] MANIFOLD  
6. 5S-7936 Y [1] SELECTOR VALVE GROUP  
7. 5S-7937 Y [1] PRIORITY VALVE GROUP  
    (Separate Illustration)
8. 8M-4432 [5] SEAL  
9. 0S-1571 [4] BOLT  
  5M-2894 [4] WASHER  
10. 1D-4566 [1] BOLT  
  1D-4719 [1] NUT  
  3B-4508 [1] LOCKWASHER  
  4B-4280 [1] WASHER  
  9S-5222 [1] SPACER  
11. 2S-1381 [1] SPRING  
12. 8S-0669 [1] SLEEVE  
13. 8M-5010 [2] SEAL  
14. 8M-8157 [2] SEAL  
15. 5S-0899 [1] DETENT ASSEM.  
    (Includes)
16. 1S-3206 [2] BEARING  
17. 8P-4764 C [1] PIN  
18. 1M-3833 [4] DOWEL  
19. 1A-2029 [4] BOLT  
20. 8P-6577 C [1] HARNESS ASSEM.  
    (Includes)
  4K-8229 [9] TERMINAL  
  5B-3718 [1] SEAL  
21. 0S-0509 [2] BOLT  
22. 3B-4506 [6] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10610321
 

6P-5034: TRANSMISSION HYDRAULIC CONTROL GROUP

6P5034 TRANSMISSION HYDRAULIC CONTROL GROUP--Top View--Part 2 of 2
Serial No. 20W385 to 405, 407 to 428, 430 to 437, 439, 440, 444, 450 & 20W453 inclusive, 21W396 to 21W427 inclusive,
22W531 to 22W812 inclusive and 23W494 to 23W765, 23W768 & 23W773 inclusive. Test No. 735 to 1898 inclusive
Part of 6P3152 Transfer Gear Group shown on Page 88
c168631 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8B-4037 [2] WASHER  
2. 9H-0223 [2] SEAL  
3. 1P-8247 [1] SHAFT  
4. 8S-6377 [2] PIN  
5. 0S-1571 [2] BOLT  
6. 5M-2894 [6] WASHER  
7. 8M-8514 [6] SEAL  
8. 5S-3632 [3] SLEEVE  
9. 1P-8256 [1] GEAR ASSEM. (33 teeth)  
    (Includes)
  3S-2173 [1] PLUG  
10. 7M-2082 [1] GASKET  
11. 6L-4783 C [4] BOLT  
  9M-1974 [4] WASHER  
12. 8P-2712 [1] COVER  
13. 8P-8909 C [1] SWITCH (slave and synch)  
14. 9M-4225 C [4] BOLT  
15. 2J-6356 [1] RING  
16. 1P-8260 [1] CAM  
17. 5S-7954 [1] LEVER ASSEM.  
    (Includes)
18. 9S-2825 [1] DOWEL  
19. 8P-8907 C [1] PLATE ASSEM.  
    (Includes)
  3H-1118 [1] PIN  
20. 7J-2036 C [1] SEAL  
21. 8S-5575 C [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP10610322
 

7G-2992: CONTROL GP-TRANSMISSION HYD

7G2992 TRANSMISSION HYDRAULIC CONTROL GROUP--Part 1
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO. Serial No. 20W406, 429, 438,
441 to 443, 445 to 449, 451, 452, 454 to 20W480 inclusive, 21W428 to 21W443 inclusive, 22W813 to 22W930 inclusive and 23W766, 767, 769 to
772, 774 to 23W881 inclusive and Test No. 1899-Up. Transmission Serial No. 1MA1 to 1MA441 inclusive and 1NA1 to 1NA413 inclusive
Part of 7G3199 Transfer Gear Group shown on Page 87A. 6P5033, 5S7936 & 5S7937 Valve & 2P9217 Cylinder parts are shown on
Pages 106, 107 and 108
c222896 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-4197 [1] COVER  
2. 2P-9217 Y [1] CYLINDER GROUP  
    (Separate Illustration)
3. 6P-5033 Y [1] PRESSURE CONTROL GROUP  
    (Separate Illustration)
4. 5S-7904 [1] PLATE  
5. 5S-7897 [1] MANIFOLD  
6. 5S-7936 [1] SELECTOR VALVE GROUP  
7. 5S-7937 Y [1] PRIORITY VALVE GROUP  
    (Separate Illustration)
8. 8M-4432 [5] SEAL  
9. 0S-1571 [4] BOLT  
  5M-2894 [4] WASHER  
10. 1D-4566 [1] BOLT  
  1D-4719 [1] NUT  
  3B-4508 [1] LOCKWASHER  
  4B-4280 [1] WASHER  
  9S-5222 [1] SPACER  
11. 2S-1381 [1] SPRING  
12. 8S-0669 [1] SLEEVE  
13. 8M-5010 [2] SEAL  
14. 8M-8157 [2] SEAL  
15. 5S-0899 [1] DETENT ASSEM.  
    (Includes)
16. 1S-3206 [2] BEARING  
17. 8P-4764 [1] PIN  
18. 1S-9811 [20] BOLT  
  9M-1974 [20] WASHER  
19. 1A-2029 [4] BOLT  
20. 8P-8814 [1] HARNESS ASSEM.  
    (Includes)
  5P-8106 H WIRE (18 gauge)  
  5P-5628 J TUBE .2 m(7.87 in.)  
  5B-3718 [1] SEAL  
21. 0S-0509 [2] BOLT  
22. 3B-4506 [6] LOCKWASHER  
  H   ORDER BY THE CENTIMETER
  Y   SEPARATE ILLUSTRATION
  J   ORDER BY THE METER
 

#SEBP10610323
 

7G-2992: CONTROL GP-TRANSMISSION HYD

7G2992 TRANSMISSION HYDRAULIC CONTROL GROUP--Part 2
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO. Serial No. 20W406, 429, 438,
441 to 443, 445 to 449, 451, 452, 454 to 20W480 inclusive. 21W428 to 21W443 inclusive, 22W813 to 22W930 inclusive and 23W766, 767, 769 to
772, 774 to 23W881 inclusive and Test No. 1899-Up. Transmission Serial No. 1MA1 to 1MA441 inclusive & 1NA1 to 1NA413 inclusive
Part of 7G3199 Transfer Gear Group shown on Page 87A
c222897 SEBP1061
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Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8B-4037 [2] WASHER  
2. 9H-0223 [2] SEAL  
3. 1P-8247 [1] SHAFT  
4. 8S-6377 [2] PIN  
5. 0S-1571 [2] BOLT  
6. 5M-2894 [6] WASHER  
7. 8M-8514 [6] SEAL  
8. 5S-3632 [3] SLEEVE  
9. 9P-2182 [1] GEAR (33 teeth)  
10. 7M-2082 [1] GASKET  
11. 1B-9575 [4] BOLT  
  1T-0738 [4] WASHER  
12. 8P-2712 [1] COVER  
13. 9P-2195 [1] SWITCH ASSEM. (slave & synch.)  
14. 9M-4225 [4] BOLT  
15. 2J-6356 [1] RING  
16. 1P-8260 [1] CAM  
17. 5S-7954 [1] LEVER ASSEM.  
    (Includes)
18. 9S-2825 [1] DOWEL  
19. 8P-8907 [1] PLATE ASSEM.  
    (Includes)
  3H-1118 [1] PIN  
20. 7J-2036 [1] SEAL  
21. 8S-5575 [1] SEAL  
22. 8P-8764 [4] SPACER  
23. 2M-4453 [4] SEAL  
 

#SEBP10610324
 

7G-2992: CONTROL GP-TRANSMISSION HYD

7G2992 TRANSMISSION HYDRAULIC CONTROL--Part 1
Transmission Serial No. 1MA442-Up and 1NA414-Up. Test No. 1899-Up. Part of 7G3199 Transfer Gear Group shown on Page 87A
6P5033, 5S7936 & 5S7937 Valve and 2P9217 Cylinder parts are shown on Pages 106, 107 and 108
c222896 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-4197 [1] COVER  
2. 2P-9217 Y [1] CYLINDER GROUP  
    (Separate Illustration)
3. 6P-5033 Y [1] PRESSURE CONTROL GROUP  
    (Separate Illustration)
4. 5S-7904 [1] PLATE  
5. 5S-7897 [1] MANIFOLD  
6. 5S-7936 [1] SELECTOR VALVE GROUP  
7. 5S-7937 Y [1] PRIORITY VALVE GROUP  
    (Separate Illustration)
8. 8M-4432 [5] SEAL  
9. 0S-1571 [4] BOLT  
  5M-2894 [4] WASHER  
10. 1D-4566 [1] BOLT  
  1D-4719 [1] NUT  
  3B-4508 [1] LOCKWASHER  
  4B-4280 [1] WASHER  
  9S-5222 [1] SPACER  
11. 2S-1381 [1] SPRING  
12. 8S-0669 [1] SLEEVE  
13. 8M-5010 [2] SEAL  
14. 8M-8157 [2] SEAL  
15. 5S-0899 [1] DETENT ASSEM.  
    (Includes)
16. 1S-3206 [2] BEARING  
17. 8P-4764 [1] PIN  
18. 1S-9811 [20] BOLT  
  9M-1974 [20] WASHER  
19. 1A-2029 [4] BOLT  
20. 8P-8814 [1] HARNESS ASSEM.  
    (Includes)
  5P-8106 H WIRE (18 gauge)  
  5P-5628 J TUBE .2 m(7.87 in.)  
  5B-3718 [1] SEAL  
21. 0S-0509 [2] BOLT  
22. 3B-4506 [6] LOCKWASHER  
  H   ORDER BY THE CENTIMETER
  Y   SEPARATE ILLUSTRATION
  J   ORDER BY THE METER
 

#SEBP10610325
 

7G-2992: CONTROL GP-TRANSMISSION HYD

7G2992 TRANSMISSION HYDRAULIC CONTROL--Part 2
Transmission Serial No. 1MA442-Up & 1NA414-Up. Test No. 1899-Up
Part of 7G3199 Transfer Gear Group shown on Page 87A
c178135 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8B-4037 [2] WASHER  
2. 9H-0223 [2] SEAL  
3. 1P-8247 [1] SHAFT  
4. 8S-6377 [2] PIN  
5. 0S-1571 [2] BOLT  
6. 5M-2894 [6] WASHER  
7. 8M-8514 [6] SEAL  
8. 5S-3632 [3] SLEEVE  
9. 9P-2182 [1] GEAR (33 teeth)  
10. 7M-2082 [1] GASKET  
11. 1B-9575 [4] BOLT  
  1T-0738 [4] WASHER  
12. 8P-2712 [1] COVER  
13. 9G-1813 C [1] SWITCH ASSEM. (slave & synch.)  
14. 9M-4225 [4] BOLT  
15. 2J-6356 [1] RING  
16. 1P-8260 [1] CAM  
17. 5S-7954 [1] LEVER ASSEM.  
    (Includes)
18. 9S-2825 [1] DOWEL  
19. 8P-8907 [1] PLATE ASSEM.  
    (Includes)
  3H-1118 [1] PIN  
20. 7J-2036 [1] SEAL  
21. 8S-5575 [1] SEAL  
22. 8P-8764 [4] SPACER  
23. 2M-4453 [4] SEAL  
  C   INDICATES CHANGE
 

#SEBP10610326
 

2P-5802: VALVE GP-RETARDER CONTROL

2P5802 RETARDER CONTROL VALVE GROUP
Part of 9D6305 Retarder Lines Group shown on Page 98
c203317 SEBP1061
  For full view, you need register

Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-9153 [1] COVER  
2. 6P-4639 C [1] DIAPHRAGM  
3. 1S-5646 [1] SPRING  
4. 1S-5567 [1] COVER  
5. 9S-4684 [1] PLUG  
  3J-1907 [1] SEAL  
6. 9H-2367 [1] SPRING  
7. 1S-2121 [1] PLUNGER  
8. 0S-1588 [8] BOLT  
  3B-4506 [8] LOCKWASHER  
9. 5S-4498 [1] SLUG  
10. 6P-4638 C [1] SPOOL  
11. 2P-9168 [1] BODY  
12. 2S-6547 [1] STOP  
13. 2S-6538 [1] SPRING  
14. 9M-7539 [1] SEAL  
15. 6P-4640 C [1] PLATE  
16. 1B-2790 [1] BOLT  
  9M-1974 [1] WASHER  
17. 3K-5762 [1] PLUG  
18. 8L-6565 C [1] PIN  
  C   INDICATES CHANGE
 

#SEBP10610327
 

8M-8551: VALVE GP-RELIEF

8M8551 RELIEF VALVE GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 20W1 to 20W480 inclusive, 21W1 to 21W443
inclusive, 22W1 to 22W930 inclusive, 23W1 to 23W881 inclusive. Transmission Serial
No. 1MA1-Up & 1NA1-Up. Part of 7G3199 & 6P3152 Transfer Case and Gear Group
shown on Pages 87A and 88
c90458 SEBP1061
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Parts for your 637D WHEEL SCRAPER:

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  
 

#SEBP10610328
 

7S-2983: PUMP GP-TMSN & SCAVENGE

7S2983 TRANSMISSION AND SCAVENGE PUMP GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 20W1 to 20W480 inclusive, 21W1 to 21W443
inclusive, 22W1 to 22W930 inclusive and 23W1 to 23W881 inclusive. Transmission
Serial No. 1MA1-Up & 1NA1-Up. Part of 6P3759 & 6P3158 Torque Converter Group
shown on Pages 92 & 94
c127155 SEBP1061
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Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1S-5632 [1] BODY ASSEM.  
2. 8M-8489 [4] DOWEL  
    (Part of 1S5632 Body Assem.)
3. 1S-6457 [1] BODY ASSEM.  
4. 8M-8489 [4] DOWEL  
    (Part of 1S6457 Body Assem.)
5. 7S-2981 [1] MANIFOLD ASSEM.  
6. 9M-0669 [2] DOWEL  
7. 5M-3320 [2] BEARING  
    (Parts of 7S2981 Manifold Assem.)
8. 8S-3442 [1] GEAR (12 Teeth Drive)  
9. 8S-3443 [1] GEAR (12 Teeth Idler)  
10. 8S-9169 [1] MANIFOLD ASSEM.  
11. 1M-3909 [2] BEARING  
    (Part of 8S9169 Manifold Assem.)
12. 1D-4706 [2] BOLT (6" long)  
13. 5F-4899 [4] BOLT (5.50" long)  
14. 3S-0004 [6] WASHER (Steel)  
15. 8M-5007 [4] SEAL  
16. 8S-6237 [2] GEAR (12 Teeth)  
17. 5M-7908 [1] PLUG ASSEM.  
  3J-1907 [1] SEAL  
    (Part of 5M7908 Plug Assem.)
18. 3S-4327 [1] COVER  
19. 1B-8736 [1] KEY  
20. 9S-1018 [4] WASHER (Rubber)  
 

#SEBP10610329
 

2S-6457: FILTER GP-TRANSMISSION

2S6457 TRANSMISSION FILTER GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 20W1 to 20W480 inclusive, 21W1 to 21W443
inclusive, 22W1 to 22W930 inclusive and 23W1 to 23W881 inclusive. Transmission
Serial No. 1MA1-Up and 1NA1-Up. Part of 6P3759 & 6P3158 Torque Converter
Groups shown on Pages 93 & 95
c178811 SEBP1061
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Parts for your 637D WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7B-3235 [6] BOLT  
2. 7S-8700 [1] COVER ASSEM.  
    (Includes)
3. 3S-4398 [1] STUD  
4. 2H-3928 [1] SEAL  
5. 5K-1770 [1] SEAL  
6. 2H-3788 [1] NUT  
7. 9S-4205 C [1] PLUG  
8. 7M-8485 C [1] SEAL  
9. 8F-8882 [2] SEAL  
10. 2S-6462 [1] RETAINER  
11. 2P-2042 C [1] HOUSING  
12. 9M-9740 [1] ELEMENT ASSEM. (disposable)  
    -OR-
  1U-2093 CH [1] ELEMENT  
    (For use with fire resistant hydraulic system)
13. 3T-0688 C [1] SPOOL  
14. 9M-1986 C [1] SPRING  
15. 9S-4191 C [1] PLUG  
  3J-1907 C [1] SEAL  
16. 9S-8008 C [1] PLUG  
  3D-2824 C [1] SEAL  
  C   INDICATES CHANGE
  H   NOT PART OF 2S6457 GROUP
 

Information:

Caterpillar Parts SIS Catalog 637D :

Truck sale:

Call 
1979 CAT 637D

SEATTLE TRACTOR INT'L
Ravensdale, Washington
Call 
1976 CAT 637D

SEATTLE TRACTOR INT'L
Ravensdale, Washington
Call 
1978 CAT 637D

SEATTLE TRACTOR INT'L
Ravensdale, Washington
Call 
1978 CAT 637D

SEATTLE TRACTOR INT'L
Ravensdale, Washington
Call 
1979 CAT 637D

SEATTLE TRACTOR INT'L
Ravensdale, Washington
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