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2P3591 TORQUE CONVERTER AND RETARDER GROUP--Side View--Part 1 of 2 Serial No. 64M382-Up, 91N583-Up and 92N242-Up. Part of 2P3601 Powershift Transmission Arrangement shown on Page 28. 1T992 Torque Converter and 7S2983 Pump parts are shown on Pages 33 and 34. AN ATTACHMENT 637B


POWER TRAIN
RETARDER GP
TORQUE CONVERTER GP
PUMP GP
FILTER GP
VALVE GP
TRANSMISSION GP

WHEEL SCRAPER 637B WHEEL SCRAPER 26R
 637 SCRAPERS 26R00001-UP (MACHINE) UEG0767S 637B 26R   (1973)

POWER TRAIN

RETARDER GP
TORQUE CONVERTER AND RETARDER GROUP
2P-3591 TORQUE CONVERTER AND RETARDER GROUP
2P-3591 TORQUE CONVERTER AND RETARDER GROUP
9D-1635 RETARDER ARRANGEMENT
 

#UEG0767S0040
 

2P-3591: TORQUE CONVERTER AND RETARDER GROUP

2P3591 TORQUE CONVERTER AND RETARDER GROUP--Side View--Part 1 of 2
Serial No. 64M382-Up, 91N583-Up and 92N242-Up. Part of 2P3601
Powershift Transmission Arrangement shown on Page 28. 1T992 Torque Converter
and 7S2983 Pump parts are shown on Pages 33 and 34. AN ATTACHMENT
c137981 UEG0767S
2P3591 TORQUE CONVERTER AND RETARDER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-2983 Y [1] PUMP GROUP  
    (Separate Illustration)
2. 0L-1143 [1] BOLT  
3. 3B-4506 [7] LOCKWASHER  
4. 1A-2029 [6] BOLT  
5. 7S-2945 [1] GASKET  
6. 1B-8714 [1] KEY  
7. 5S-3578 [1] GEAR (55 Teeth)  
8. 7F-0548 [1] WASHER  
9. 2K-0337 [1] NUT  
10. 8M-5249 [2] SEAL  
11. 5S-3584 [1] GEAR (74 Teeth)  
12. 3S-6874 [2] RING  
13. 4S-5926 [1] BEARING  
14. 5S-3580 [1] SHAFT  
15. 0L-2070 [2] BOLT  
  9M-1367 [1] LOCK  
16. 3S-6924 [2] RING  
17. 2P-3705 [1] RING  
18. 8S-6246 [2] CARRIER  
19. 2P-3655 [1] RETAINER  
20. 0S-1590 [8] BOLT  
21. 9S-4183 [2] PLUG  
22. 3D-2824 [2] SEAL  
23. 1T-0992 Y [1] TORQUE CONVERTER GROUP  
    (Separate Illustration)
24. 5S-3697 [1] HOUSING  
25. 5M-7329 [2] SEAL  
26. 2M-3818 [1] SEAL  
  Y   SEPARATE ILLUSTRATION
 

#UEG0767S0041
 

2P-3591: TORQUE CONVERTER AND RETARDER GROUP

2P3591 TORQUE CONVERTER AND RETARDER GROUP--End View--Part 2 of 2
Serial No. 64M382-Up, 91N583-Up and 92N242-Up. Part of 2P3601 Powershift
Transmission Arrangement shown on Page 28. 2S6457 Filter and 5S7941 Clutch
and Valve parts are shown on Pages 34 and 35. AN ATTACHMENT
c137982 UEG0767S
2P3591 TORQUE CONVERTER AND RETARDER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1585 [4] BOLT  
2. 3B-4508 [8] LOCKWASHER  
3. 8M-4443 [2] SEAL  
4. 5S-7896 [1] MANIFOLD  
5. 5S-7941 Y [1] VALVE GROUP  
    (Separate Illustration)
6. 5F-4899 [4] BOLT  
7. 8M-4432 [5] SEAL  
8. 5S-3581 [1] ROTOR  
9. 2P-3657 [1] HOUSING ASSEM.  
10. 5S-0907 [1] PLUG  
11. 9S-4191 [1] PLUG  
  3J-1907 [1] SEAL  
12. 7B-3235 [2] BOLT (1.375" long)  
13. 8M-5249 [2] SEAL  
14. 1A-5822 [2] BOLT (2.75" long)  
15. 2S-6457 Y [1] FILTER GROUP  
    (Separate Illustration)
16. 1A-2029 [15] BOLT  
17. 3B-4506 [19] LOCKWASHER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0767S0042
 

1T-0991: TORQUE CONVERTER GROUP

1T991 TORQUE CONVERTER GROUP--Type 1
Part of Torque Converter shown on Page 29
c138009 UEG0767S
1T0991 TORQUE CONVERTER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1T-0662 [1] TURBINE  
2. 1T-0708 [1] STATOR  
3. 1T-0709 [1] IMPELLER  
4. 1T-1027 [1] HUB  
5. 1T-0686 [1] RACE  
6. 1T-0836 [1] RING  
7. 2D-5658 [1] BEARING  
8. 1T-1043 [1] RING  
9. 1T-1042 [1] SHAFT  
10. 1T-0076 [1] SPACER  
11. 1T-1022 [1] CARRIER  
12. 1T-1024 [1] GEAR ASSEM.  
13. 0S-1588 [12] BOLT  
14. 0S-1594 [38] BOLT  
15. 1T-0689 [36] WASHER  
16. 1T-0655 [1] BEARING  
17. 1T-1036 [1] RACE  
18. 1T-0651 [2] RING  
19. 1T-1017 [1] HUB  
20. 1T-0706 [1] BEARING  
21. 1T-0762 [1] RACE  
22. 1T-1039 [1] HOUSING  
23. 1T-1034 [1] PILOT  
24. 1T-1044 [1] RETAINER  
25. 1T-1037 [1] RING  
26. 1T-1018 [1] BEARING  
27. 1A-2029 [6] BOLT  
28. 1T-0657 [1] PLATE  
29. 1T-0838 [1] PLATE  
30. 4B-4158 [2] SCREW  
31. 6F-7030 [20] BOLT  
32. 1T-1028 [1] HUB  
33. 1T-0665 [1] RING  
 

#UEG0767S0043
 

1T-0991: TORQUE CONVERTER GROUP

1T991 TORQUE CONVERTER GROUP--Type 2
Part of Torque Converter shown on Page 29
c149686 UEG0767S
1T0991 TORQUE CONVERTER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1T-0662 [1] TURBINE  
2. 1T-0708 [1] STATOR  
3. 1T-0709 [1] IMPELLER  
4. 1T-1027 [1] HUB  
5. 1T-0686 [1] RACE  
6. 1T-0836 [1] RING  
7. 2D-5658 [1] BEARING  
8. 1T-1043 [1] RING  
9. 1T-1042 [1] SHAFT  
10. 1T-0076 [1] SPACER  
11. 1T-1022 [1] CARRIER  
12. 1T-1024 [1] GEAR ASSEM.  
13. 0S-1588 [12] BOLT  
14. 0S-1594 [38] BOLT  
15. 1T-0689 [36] WASHER  
16. 1T-0655 [1] BEARING  
17. 1T-1036 [1] RACE  
18. 1T-0651 [2] RING  
19. 1T-1017 [1] HUB  
20. 1T-1078 C [1] BEARING  
21. 1T-0762 [1] RACE  
22. 1T-1029 C [1] HOUSING  
23. 1T-1034 [1] PILOT  
24. 1T-1044 [1] RETAINER  
25. 1T-1037 [1] RING  
26. 1T-1018 [1] BEARING  
27. 1A-2029 [6] BOLT  
28. 1T-0657 [1] PLATE  
29. 1T-0838 [1] PLATE  
30. 4B-4158 [2] SCREW  
31. 6F-7030 [20] BOLT  
32. 1T-1083 C [1] HUB  
33. 1T-0665 [1] RING  
34. 1T-1033 C [1] PLATE  
35. 1T-0896 C [1] RING  
  C   INDICATES CHANGE
 

#UEG0767S0044
 

1T-0992: TORQUE CONVERTER GROUP

1T992 TORQUE CONVERTER GROUP--Lock-up Clutch--Type 1
Serial No. 64M382-Up, 91N583-Up and 92N242-Up
Part of 2P3591 Torque Converter and Retarder Group shown on Page 30. AN ATTACHMENT
c138003 UEG0767S
1T0992 TORQUE CONVERTER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1T-0662 [1] TURBINE  
2. 1T-0708 [1] STATOR  
3. 1T-0709 [1] IMPELLER  
4. 1T-1027 [1] HUB  
5. 1T-0686 [1] RACE  
6. 1T-0836 [2] RING  
7. 2D-5658 [1] BEARING  
8. 1T-1037 [1] RING  
9. 1T-1038 [1] SHAFT  
10. 1T-1018 [1] BEARING  
11. 1T-1022 [1] CARRIER  
12. 1T-1024 [1] GEAR ASSEM. (55 Teeth)  
13. 0S-1588 [12] BOLT  
14. 0S-1594 [38] BOLT  
15. 1T-0689 [36] WASHER  
16. 1T-0655 [1] BEARING  
17. 1T-1036 [1] RACE  
18. 1T-0651 [2] RING  
19. 1T-1017 [1] HUB  
20. 1T-0706 [1] BEARING  
21. 1T-0762 [1] RACE  
22. 1T-1029 [1] HOUSING  
23. 1T-1034 [1] PILOT  
24. 1T-1044 [1] RETAINER  
25. 1T-1019 [1] CARRIER  
  4M-8610 [1] RING  
26. 1T-0889 [1] RING  
  1T-0894 [1] EXPANDER  
27. 1A-2029 [6] BOLT  
28. 1T-0657 [1] PLATE  
29. 6F-7030 [20] BOLT  
30. 4B-4158 [2] SCREW  
  1T-0838 [1] PLATE  
31. 1T-1028 [1] HUB  
32. 1T-0665 [1] RING  
33. 1T-1032 [1] PISTON  
34. 1T-0886 [1] PLATE  
35. 1T-0888 [1] RING  
  1T-0893 [1] EXPANDER  
36. 1T-0887 [1] DISC ASSEM.  
37. 1T-1033 [1] PLATE  
38. 1T-0896 [1] RING  
 

#UEG0767S0045
 

1T-0992: TORQUE CONVERTER GROUP

1T992 TORQUE CONVERTER GROUP--Lock-up Clutch--Type 2
Serial No. 64M382-Up, 91N583-Up and 92N242-Up
Part of 2P3591 Torque Converter and Retarder Group shown on Page 30. AN ATTACHMENT
c149687 UEG0767S
1T0992 TORQUE CONVERTER GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1T-0662 [1] TURBINE  
2. 1T-0708 [1] STATOR  
3. 1T-0709 [1] IMPELLER  
4. 1T-1027 [1] HUB  
5. 1T-0686 [1] RACE  
6. 1T-0836 [2] RING  
7. 2D-5658 [1] BEARING  
8. 1T-1037 [1] RING  
9. 1T-1038 [1] SHAFT  
10. 1T-1018 [1] BEARING  
11. 1T-1022 [1] CARRIER  
12. 1T-1024 [1] GEAR ASSEM. (55 Teeth)  
13. 0S-1588 [12] BOLT  
14. 0S-1594 [38] BOLT  
15. 1T-0689 [36] WASHER  
16. 1T-0655 [1] BEARING  
17. 1T-1036 [1] RACE  
18. 1T-0651 [2] RING  
19. 1T-1017 [1] HUB  
20. 1T-1078 C [1] BEARING  
21. 1T-0762 [1] RACE  
22. 1T-1029 [1] HOUSING  
23. 1T-1034 [1] PILOT  
24. 1T-1044 [1] RETAINER  
25. 1T-1019 [1] CARRIER  
  4M-8610 [1] RING  
26. 1T-0889 [1] RING  
  1T-0894 [1] EXPANDER  
27. 1A-2029 [6] BOLT  
28. 1T-0657 [1] PLATE  
29. 6F-7030 [20] BOLT  
30. 4B-4158 [2] SCREW  
  1T-0838 [1] PLATE  
31. 1T-1083 C [1] HUB  
32. 1T-0665 [1] RING  
33. 1T-1032 [1] PISTON  
34. 1T-0886 [1] PLATE  
35. 1T-0888 [1] RING  
  1T-0893 [1] EXPANDER  
36. 1T-0887 [1] DISC ASSEM.  
37. 1T-1033 [1] PLATE  
38. 1T-0896 [1] RING  
  C   INDICATES CHANGE
 

#UEG0767S0046
 

7S-2983: PUMP GP-TMSN & SCAVENGE

7S2983 TRANSMISSION AND SCAVENGE PUMP GROUP
Part of Torque Converter and 2P3591 Torque Converter
and Retarder Group shown on Pages 29 and 30
c127155 UEG0767S
7S2983 PUMP GP-TMSN & SCAVENGE Parts scheme
  For full view, you need register

Parts for your 637B 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)  
 

#UEG0767S0047
 

2S-6457: FILTER GP-TRANSMISSION

2S6457 TRANSMISSION FILTER GROUP
Part of Torque Converter and 2P3591 Torque Converter
and Retarder Group shown on Pages 29 and 31
c114485 UEG0767S
2S6457 FILTER GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7B-3235 [6] BOLT  
2. 7S-8700 [1] COVER ASSEM.  
3. 3S-4398 [1] STUD  
4. 2H-3928 [1] SEAL  
5. 5K-1770 [1] SEAL  
6. 2H-3788 [1] NUT  
7. 9S-4205 [1] PLUG  
8. 7M-8485 [1] SEAL  
9. 8F-8882 [2] SEAL  
10. 2S-6462 [1] RETAINER  
11. 2P-2042 [1] HOUSING  
12. 9M-9740 [1] ELEMENT ASSEM. (Disposable)  
13. 1P-9600 [1] SPOOL  
14. 2S-5816 [1] SPRING  
15. 9S-4191 [1] PLUG  
  3J-1907 [1] SEAL  
16. 9S-4183 [1] PLUG  
  3D-2824 [1] SEAL  
 

#UEG0767S0048
 

5S-7941: VALVE GP

5S7941 LOCK-UP CLUTCH AND SYNCHRONIZING VALVE GROUP
Part of Torque Converter and 2P3591 Torque Converter and Retarder Group shown on Pages 29 and 31
c208704 UEG0767S
5S7941 VALVE GP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8M-8279 [1] TUBE 2.28 mm(9 in.) long  
2. 3B-8995 [1] FITTING  
  1F-1344 [1] NUT  
3. 3B-8822 [1] ELBOW  
4. 5S-7963 [1] SPOOL  
6. 9S-4191 [4] PLUG  
  3J-1907 [4] SEAL  
7. 4D-2813 [1] SPRING  
8. 2S-3625 [2] COVER  
9. 0S-1594 [8] BOLT  
10. 3B-4506 [8] LOCKWASHER  
11. 8M-5249 [4] SEAL  
12. 2S-4889 [1] SPOOL  
13. 5M-7914 [2] SPACER .026 mm(.010 in.) thick  
  5M-7915 [2] SPACER 0.92 mm(.036 in.) thick  
14. 3S-6925 [1] SPRING  
15. 7S-3026 [1] COVER ASSEM.  
16. [2] DOWEL  
17. 8M-5250 [4] SEAL  
18. 0S-1617 [4] BOLT  
19. 3B-4505 [4] LOCKWASHER  
20. 8M-5025 [1] VALVE  
21. 8M-8544 [1] SEAL  
22. 8M-8541 [1] ADAPTER  
 

#UEG0767S0049
 

1P-8836: TRANSMISSION GROUP

1P8836 TRANSMISSION GROUP
Serial No. 64M382 to 64M492 inclusive, 91N583 to 91N832 inclusive, 92N242 to
92N261 inclusive and 26R1 to 26R599 inclusive. Part of 2P6300 and 2P3601
Arrangements shown on Pages 27 and 28. 8S650 Transmission, 2P3643 Control
and 8M8551 Valve parts are shown on Pages 36B, 37, 38, 39, 40, 41 and 44
c138002 UEG0767S
1P8836 TRANSMISSION GROUP Parts scheme
  For full view, you need register

Parts for your 637B WHEEL SCRAPER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1594 [36] BOLT  
2. 3B-4506 [44] LOCKWASHER  
3. 1P-8198 [1] COVER ASSEM.  
4. 1P-8199 [1] GASKET  
5. 0S-1619 [4] BOLT  
6. 8M-8551 Y [1] VALVE GROUP  
    (See Separate Illustration)
7. 8M-8621 [1] GASKET  
8. 5S-7866 [1] CAGE  
9. 7S-2999 [2] SHIM  
10. 6F-2956 [2] CUP  
11. 3F-5789 [2] CONE  
12. 2S-4957 [1] SLEEVE  
13. 8M-4437 [3] SEAL  
14. 2S-0486 [1] SLEEVE  
15. 1H-7922 [1] FITTING  
  1F-1344 [1] NUT  
16. 9S-6962 [1] TUBE  
17. 5S-7875 [1] PINION (30 Teeth)  
18. 7H-3070 [7] LOCK  
19. 5S-7867 [1] CAGE  
20. 0L-2072 [1] CLIP  
21. 7S-3001 [1] SHIM  
22. 4F-4879 [1] BOLT  
23. 1F-5546 [1] DOWEL  
  0L-1026 [1] PLUG  
24. 6B-5154 [1] INNER RACE & ROLLER ASSEM.  
25. 5S-7876 [1] GEAR (38 Teeth)  
26. 0S-1590 [16] BOLT  
27. 8S-3321 [1] COVER  
28. 8S-3322 [1] GASKET  
29. 9H-5630 [1] OUTER RACE  
30. 7S-2964 [1] SHAFT  
31. 1P-2566 [2] CUP  
  1P-2567 [2] CONE  
32. 2K-8257 [1] SEAL  
33. 7S-3000 [3] SHIM  
34. 1P-2562 [1] CAGE ASSEM.  
35. 0S-1591 [6] BOLT  
36. 2H-2665 [1] SEAL  
37. 0L-1558 [2] BOLT  
38. 3S-1262 [2] RETAINER  
39. 2D-8540 [1] SEAL  
40. 1P-2561 [1] PLATE  
41. 7B-3235 [8] BOLT  
42. 2M-0849 [8] WASHER  
43. Y [1] PLANETARY TRANSMISSION  
    (See Separate Illustration)
44. 1P-8123 [1] CASE ASSEM.  
45. 8S-3524 [1] TUBE  
  8S-3523 [1] CLIP  
46. 0L-1351 [1] BOLT  
47. 5M-2894 [1] WASHER  
48. 4K-7239 [2] DOWEL  
49. 8H-8175 [3] BEARING  
50. 1M-3833 [1] PIN  
51. 2D-8154 [1] STUD  
52. 4K-8603 [1] PLUG  
53. 3H-1118 [1] PIN  
54. Y [1] TRANSMISSION HYD. CONTROL  
    (See Separate Illustration)
55. 3S-2803 [2] LOCK  
  Y   SEPARATE ILLUSTRATION
 

Information:

Specifications
Hydraulic Control Pressures
627 & 637 SCRAPERS POWER TRAIN
Control Valve For The Retarder<BR> (8S6252, 9S6889 and 2P5802)
627 & 637 SCRAPERS POWER TRAIN
Control Valve For The Retarder<BR> (8S6252, 9S6889 and 2P5802)
631, 633 & 637 TRACTORS POWER TRAIN
Hydraulic Retarder
631, 633 & 637 TRACTORS POWER TRAIN
Service Magazine
Torque Converter Housing Changed To Increase Clearance For Retaining Ring In Pump Idler Gear{3108,3101,3109}
1982/10/25
Lubrication Of Pump Drive Idler Gear Bearing Improved{3109,3116,3117,3120,3153}
1985/09/30
Two Bolts Have Been Added At The Junction Of The Converter And Retarder Housing To Prevent O-Ring Seal Damage{3109}
1979/04/23

Caterpillar Parts SIS Catalog 637B :

TORQUE CONVERTER
2P-3590 TORQUE CONVERTER
POWERSHIFT TRANSMISSION ARRANGEMENT
2P-3601 POWERSHIFT TRANSMISSION ARRANGEMENT
POWERSHIFT TRANSMISSION ARRANGEMENT
2P-3600 POWERSHIFT TRANSMISSION ARRANGEMENT
BACKUP WARNING GROUP
9D-8830 BACKUP WARNING GROUP
BASIC ALARM GROUP
7D-9375 BASIC ALARM GROUP
BACKUP WARNING GROUP
8D-4830 BACKUP WARNING GROUP
LAMP GP
1M-3387 LAMP GP
HARNESS ASSEMBLY
2G-4002 HARNESS ASSEMBLY
2P-3591 TORQUE CONVERTER AND RETARDER GROUP
TORQUE CONVERTER GROUP
1T-0991 TORQUE CONVERTER GROUP
TORQUE CONVERTER GROUP
1T-0991 TORQUE CONVERTER GROUP
TORQUE CONVERTER GROUP
1T-0992 TORQUE CONVERTER GROUP
TORQUE CONVERTER GROUP
1T-0992 TORQUE CONVERTER GROUP
PUMP GP-TMSN & SCAVENGE
7S-2983 PUMP GP-TMSN & SCAVENGE
FILTER GP-TRANSMISSION
2S-6457 FILTER GP-TRANSMISSION
VALVE GP
5S-7941 VALVE GP

Truck sale:

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