9G7885 ADAPTER--Transmission Serial No. 26W443-Up and 27W1090-Up. NOTE: CAN BE INSTALLED IN A UNIT WITH EITHER A ROTARY OR A PRINTED CIRCUIT SWITCH 637D



POWER TRAIN
TRANSMISSION GP
GEAR GP
TORQUE CONVERTER GP
TRANSMISSION GP
GOVERNOR GP

WHEEL TRACTOR 637D WHEEL TRACTOR 26W
 637D TRACTORS 26W00001-UP (MACHINE) POWERED BY 3408 ENGINE SEBP1058 637D 26W   (1975)

POWER TRAIN

TRANSMISSION GP
ADAPTER
9G-7885 ADAPTER
TRANSMISSION ARRANGEMENT
3P-5856 TRANSMISSION ARRANGEMENT
TRANSMISSION ARRANGEMENT
3P-5856 TRANSMISSION ARRANGEMENT
TRANSMISSION AR
7G-4992 TRANSMISSION AR
PARTS & CASE GP
6P-1278 PARTS & CASE GP
PLANETARY GP
6P-1321 PLANETARY GP
PLANETARY GP
6P-1321 PLANETARY GP
PLANETARY GP
6P-1321 PLANETARY GP
PLANETARY GP
6P-1321 PLANETARY GP
 

#SEBP10580560
 

9G-7885: ADAPTER

9G7885 ADAPTER--Transmission
Serial No. 26W443-Up and 27W1090-Up. NOTE: CAN BE INSTALLED IN A UNIT
WITH EITHER A ROTARY OR A PRINTED CIRCUIT SWITCH
c236625 SEBP1058
9G7885 ADAPTER Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
    NO SERVICED PARTS
 

#SEBP10580561
 

3P-5856: TRANSMISSION ARRANGEMENT

3P5856 TRANSMISSION ARRANGEMENT
Serial No. 26W1 to 26W413 inclusive & 27W1 to 27W908 inclusive. Test No. 340 to 2205 inclusive. 3P8471 Transmission Hydraulic Control,
2P9240 Transfer Gear, 7S2939 Torque Converter, 6P1278 Transmission Case and Covers, 5S7930 Governor and Drive, 6P1321 Planetary
Transmission, 8S660 Manifold and Screen, 7S8630 Filter and 1P4220 & 7S4577 Pump parts are shown on Pages 106 through 108C-3, 114
through 118 & 120 through 126
c208214 SEBP1058
3P5856 TRANSMISSION ARRANGEMENT Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 6P-1270 [1] COVERS GROUP  
    (Shipping and Storage-Includes Covers, Gaskets, and Hardware)
2. 3P-8471 [1] TRANSMISSION CONTROL GROUP (Hyd)  
3. 6P-1278 [1] TRANSMISSION CASE & COVERS GROUP)  
4. 7S-8630 [1] FILTER GROUP  
5. 5S-7930 [1] GOVERNOR & DRIVE GROUP  
6. 7S-4577 [1] TRANSMISSION PUMP GROUP  
7. 1P-4220 [1] GEAR PUMP GROUP  
8. 8S-0660 [1] MANIFOLD & SCREENS GROUP  
9. 2P-9240 [1] TRANSFER GEARS GROUP  
10. 7S-2939 [1] TORQUE CONVERTER GROUP  
11. 6P-1321 Y PLANETARY TRANSMISSION GROUP  
    (Separate Illustration)
  Y   SEPARATE ILLUSTRATION
 

#SEBP10580562
 

3P-5856: TRANSMISSION ARRANGEMENT

3P5856 TRANSMISSION ARRANGEMENT
Serial No. 26W414 to 26W442 inclusive & 27W909 to 27W1089 inclusive. Test No. 2206 to 2765 inclusive. 3P8471 Transmission Hydraulic
Control, 2P9240 Transfer Gear, 7S2939 Torque Converter, 6P1278 Transmission Case and Covers, 5S7930 Governor and Drive, 6P1321 Planetary
Transmission, 8S660 Manifold and Screen, 9P6447 Filter and 1P4220 & 7S4577 Pump parts are shown on Pages 108A through 108C-3, 114
through 118, 120 through 124, 124B, 125 & 126
c171747 SEBP1058
3P5856 TRANSMISSION ARRANGEMENT Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 6P-1270 [1] COVERS GROUP  
    (Shipping and Storage-Includes Covers, Gaskets, and Hardware)
2. 3P-8471 [1] TRANSMISSION CONTROL GROUP (Hyd)  
3. 6P-1278 [1] TRANSMISSION CASE & COVERS GROUP)  
4. 9P-6447 C [1] FILTER GROUP  
5. 5S-7930 [1] GOVERNOR & DRIVE GROUP  
6. 7S-4577 [1] TRANSMISSION PUMP GROUP  
7. 1P-4220 [1] GEAR PUMP GROUP  
8. 8S-0660 [1] MANIFOLD & SCREENS GROUP  
9. 2P-9240 [1] TRANSFER GEARS GROUP  
10. 7S-2939 [1] TORQUE CONVERTER GROUP  
11. 6P-1321 Y PLANETARY TRANSMISSION GROUP  
    (Separate Illustration)
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10580563
 

7G-4992: TRANSMISSION AR

7G4992 TRANSMISSION ARRANGEMENT
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO. Serial No. 26W443 to
26W491 inclusive & 27W1090 to 27W1329 inclusive. Test No. 2766-Up. Transmission Serial No. 1PA1-Up. 7G4991 Control, 2P9240 Gear,
7S2939 Torque Converter, 6P1278 Case & Covers, 5S7930 Governor & Drive, 6P1321 Planetary Transmission, 8S660 Manifold & Screen,
9P6447 Filter & 1P4220 & 7S4577 Pump parts are shown on Pages 108C-4 through 108C-10, 114 through 118A, 120
through 123, 124B, 125 and 126
c225194 SEBP1058
7G4992 TRANSMISSION AR Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 6P-1270 [1] COVERS GROUP  
    (Shipping and Storage-Includes Covers, Gaskets, and Hardware)
2. 7G-4991 [1] TRANSMISSION CONTROL GROUP (Hyd)  
3. 6P-1278 [1] TRANSMISSION CASE & COVERS GROUP)  
4. 9P-6447 [1] FILTER GROUP  
5. 5S-7930 [1] GOVERNOR & DRIVE GROUP  
6. 7S-4577 [1] TRANSMISSION PUMP GROUP  
7. 1P-4220 [1] GEAR PUMP GROUP  
8. 8S-0660 [1] MANIFOLD & SCREENS GROUP  
9. 2P-9240 [1] TRANSFER GEARS GROUP  
10. 7S-2939 [1] TORQUE CONVERTER GROUP  
11. 6P-1321 Y PLANETARY TRANSMISSION GROUP  
    (Separate Illustration)
  Y   SEPARATE ILLUSTRATION
 

#SEBP10580564
 

2P-9240: TRANSFER CASE & GEAR GP

2P9240 TRANSFER GEAR GROUP--Part 1 of 2
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 26W1 to 26W491 inclusive & 27W1 to 27W1329
inclusive. Transmission serial No. 1PA1-Up. Part of 3P5856 & 7G4992 Transmission
Arrangements shown on Pages 112B, 113 and 113B
c231193 SEBP1058
2P9240 TRANSFER CASE & GEAR GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 6F-0711 [4] SEAL  
2. 9S-8004 C [3] PLUG  
  3J-1907 [3] SEAL  
3. 0S-1585 [8] BOLT  
4. 3B-4508 [17] LOCKWASHER  
5. 3P-9089 [1] ADAPTER  
6. 5M-1932 C [7] STUD  
7. 1D-4719 C [9] NUT  
8. 9L-8496 [1] TEE  
9. 2P-7054 [1] GEAR (70 teeth)  
10. 2S-6530 [1] CAGE  
11. 3K-0526 [1] BEARING  
12. 3B-1915 [3] BOLT  
13. 5H-6199 [1] RING  
14. 2P-9154 [1] CASE ASSEM.  
    (Includes)
15. 9S-5214 [1] BEARING  
16. 1F-1006 [1] DOWEL  
17. 9S-2793 [1] TUBE  
18. 9S-2794 [1] TUBE  
19. 9S-2795 [1] TUBE  
20. 9S-2796 [1] TUBE  
21. 2B-0947 [2] BOLT  
22. 2B-2404 [2] CLIP  
  0T-0102 [2] BOLT  
23. 3P-7484 [1] TUBE ASSEM.  
  C   INDICATES CHANGE
 

#SEBP10580565
 

2P-9240: TRANSFER CASE & GEAR GP

2P9240 TRANSFER GEAR GROUP--Part 2 of 2
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 26W1 to 26W491 inclusive & 27W1 to 27W1329
inclusive. Transmission Serial No. 1PA1-Up. Part of 3P5856 & 7G4992 Transmission
Arrangements shown on Pages 112B, 113 & 113B
c231194 SEBP1058
2P9240 TRANSFER CASE & GEAR GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 2P-9226 [1] CAGE ASSEM.  
    (Includes)
2. 2M-1538 C [2] STUD  
3. 1A-2029 [28] BOLT  
4. 3B-4506 [18] LOCKWASHER  
5. 5K-9243 [1] ELBOW  
6. 3K-8460 C [1] PLUG  
  1J-9671 C [1] SEAL  
7. 2D-8822 [2] STUD  
8. 8P-1425 C [1] TUBE ASSEM.  
  5P-5910 C [1] BONNET  
9. 2P-7003 [1] GEAR (86 teeth)  
10. 030-0061 [6] CONE  
  030-0060 [6] CUP  
11. 9H-3360 [1] SEAL  
12. 2P-7004 [1] GEAR (86 teeth)  
13. 8S-0615 [2] SHIM PACK  
14. 3B-1915 [6] BOLT  
15. 2P-7021 [1] CAGE  
16. 7B-3235 C [5] BOLT  
  3B-4508 [5] LOCKWASHER  
17. 2P-7039 [1] GEAR (77 teeth)  
18. 2P-7005 [1] GEAR (75 teeth)  
19. 2P-7023 [1] SHIM PACK  
20. 3J-0634 [1] SEAL  
21. 2P-7022 [1] CAGE  
22. 3F-5792 [1] SEAL  
23. 8S-0617 [1] COVER  
24. 2M-1309 [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP10580566
 

1T-0910: TORQUE CONVERTER GP

1T910 TORQUE CONVERTER GROUP (7S2939 N/S)
Torque Converter Serial No. 49T1-Up
Part Of 3P5856 And 7G4992 Transmission
c324573 SEBP1058
1T0910 TORQUE CONVERTER GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 0S-1594 [48] BOLT  
2. 1T-0689 [36] WASHER  
3. 1T-0651 [2] RING  
4. 1T-1078 C [2] BEARING  
5. 1T-1079 C [1] HUB (IMPELLER)  
6. 1T-1085 C [1] CARRIER AS.  
7. 1T-0767 [1] BEARING  
8. 1T-0649 [1] RING  
9. 1T-1082 C [1] HUB (TURBINE)  
10. 5S-7935 J [1] SHAFT  
11. 1T-0648 [1] SEAL  
12. 1T-1348 C [1] SUPPORT AS.  
13. 1T-1347 C [1] BEARING (SLEEVE)  
14. 1T-0704 [1] PLATE  
15. 1T-0657 [1] PLATE  
16. 1T-0901 [1] IMPELLER  
17. 1T-0680 [11] SPRING  
18. 1T-0679 [11] ROLLER  
19. 1T-0681 [1] CAM  
20. 1T-0662 [1] TURBINE  
21. 1T-0665 [1] RING  
22. 6F-7030 [20] BOLT  
23. 0S-1621 [12] BOLT  
24. 1T-0762 [1] RACE  
25. 1T-0966 [1] FLANGE AS.  
26. 1T-0647 [1] BEARING  
27. 2S-7978 J [1] WASHER  
28. 9M-1975 J [1] RING  
29. 3H-1816 J [1] RING  
30. 1T-0686 [3] RACE  
31. 1T-0655 [2] BEARING  
32. 1T-0813 [1] STATOR  
33. 1T-0669 [1] HOUSING  
  C   INDICATES CHANGE
  J   NOT PART OF 1T0910 TORQUE CONV
 

#SEBP10580567
 

6P-1278: PARTS & CASE GP

6P1278 TRANSMISSION CASE AND COVERS GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE
USE VEHICLE SERIAL NO. Serial No. 26W1 to 26W491 inclusive & 27W1 to 27W1329
inclusive. Transmission Serial No. 1PA1-Up. Part of 3P5856 & 7G4992 Transmission
Arrangements shown on Pages 112B, 113 and 113B
c225714 SEBP1058
6P1278 PARTS & CASE GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 9S-4185 [1] PLUG  
  3K-0360 [1] SEAL  
2. 7S-4530 [1] SLEEVE  
  8M-8157 [2] SEAL  
3. 9M-2133 [1] COVER  
  9M-2132 [1] GASKET  
4. 0S-1594 [4] BOLT  
5. 5B-9603 [8] BOLT  
6. 5M-2894 [20] WASHER  
7. 8P-1341 [1] COVER  
8. 8S-0583 C [1] GASKET  
9. 9S-8004 C [5] PLUG  
10. 8M-4437 [8] SEAL  
11. 4B-2363 [1] PLUG  
  6F-4868 [1] GASKET  
12. 5S-3622 [1] BAFFLE ASSEM.  
13. 0S-0509 [4] BOLT  
  3H-3451 [2] LOCK  
  4B-4278 [4] WASHER  
14. 8M-4390 [2] SEAL  
15. 8M-4992 [1] SEAL  
16. 8M-5248 [1] SEAL  
17. 1S-9799 [2] SEAL  
18. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
19. 1A-2029 [12] BOLT  
20. 2P-3659 [1] ADAPTER  
  7D-0055 [1] ORIFICE  
21. 1S-9799 [2] SEAL  
22. 6P-1267 [1] CASE ASSEM.  
    (Includes)
  9F-2978 [4] NUT (weld)  
23. 4D-8148 [2] DOWEL  
24. 0S-0509 [1] BOLT  
  2S-6160 [1] WASHER  
25. 7S-3013 [1] TUBE ASSEM.  
26. 7S-4655 [1] TUBE  
27. 7S-4656 [1] TUBE  
28. 3R-0451 [1] BOSS  
29. 8S-0681 [1] SLEEVE  
30. 9M-2069 [1] PIN  
31. 8H-8175 [3] BEARING  
32. 3B-0623 [1] PLUG  
33. 6K-6276 [1] BOSS  
34. 2M-2488 [2] STUD  
35. 4M-2743 [1] STUD  
36. 2M-1538 [4] STUD  
37. 1D-4717 [7] NUT  
38. 3B-4506 [11] LOCKWASHER  
39. 1L-6582 [1] COVER  
40. 3J-1907 [5] SEAL  
41. 3J-5389 [1] PLUG  
42. 1L-6583 [1] GASKET  
43. 4J-0523 C [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP10580568
 

5S-7930: GOVERNOR & DRIVE GP

5S7930 GOVERNOR AND DRIVE GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO. Serial No. 26W1 to 26W465
inclusive & 27W1 to 1160, 1162, 1163, 1165 to 1176, 1190, 1192, 1195, 1197, 1198, 1200, 1201 & 27W1203 inclusive. Test No. 1 to 3154
inclusive. Transmission Serial No. 1PA1-Up. Part of 3P5856 & 7G4992 Transmission Arrangements shown on Pages 112B, 113 and 113B
8S6340 Governor parts are shown on Page 119
c225845 SEBP1058
5S7930 GOVERNOR & DRIVE GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 8S-0629 [1] GASKET  
2. 5S-7929 [1] SHAFT  
3. 5S-7922 [1] GEAR (70 Teeth)  
4. 6P-2911 C [1] GEAR ASSEM. (45 Teeth)  
    (Includes)
5. 9S-5214 [1] BEARING  
6. 8F-3252 [1] WASHER  
7. 1D-4541 [1] BOLT  
  9M-1974 [1] WASHER  
8. 5S-7926 [1] GEAR (39 Teeth)  
9. 8M-4389 [1] SEAL  
10. 8S-6340 Y [1] GOVERNOR GROUP  
    (Separate Illustration)
11. 4F-2291 [1] KEY  
12. 8M-5251 [3] SEAL  
13. 9S-4191 [5] PLUG  
  3J-1907 [5] SEAL  
14. 5S-7053 [1] RING  
15. 5S-7770 [6] WASHER  
16. 5S-7037 [1] SHAFT  
17. 8S-0628 [1] COVER ASSEM.  
    (Includes)
18. 9S-5214 [1] BEARING  
19. 5B-5812 [1] DOWEL  
20. 3P-5846 C [1] SHAFT ASSEM.  
    (Includes)
21. 010-2571 C [3] SETSCREW  
22. 1A-2029 [13] BOLT  
  3B-4506 [13] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10580569
 

5S-7930: GOVERNOR & DRIVE GP

5S7930 GOVERNOR AND DRIVE GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO. Serial No. 26W466 to
26W491 inclusive & 27W1161, 1164, 1177 to 1189, 1191, 1193, 1194, 1196, 1199, 1202 & 27W1204 to 27W1329 inclusive. Test No. 3155-Up.
Transmission Serial No. 1PA1-Up Part of 3P5856 & 7G4992 Transmission Arrangements shown on Pages 112B, 113 and 113B.
8S6340 Governor parts are shown on Page 119
c174228 SEBP1058
5S7930 GOVERNOR & DRIVE GP Parts scheme
  For full view, you need register

Parts for your 637D WHEEL TRACTOR:

Pos. Part No Qty Parts name Comments
1. 8S-0629 [1] GASKET  
2. 5S-7929 [1] SHAFT  
3. 5S-7922 [1] GEAR (70 Teeth)  
4. 9P-9266 C [1] GEAR ASSEM. (45 Teeth)  
    (Includes)
5. 9S-5214 [1] BEARING  
6. 8F-3252 [1] WASHER  
7. 1D-4541 [1] BOLT  
  9M-1974 [1] WASHER  
8. 5S-7926 [1] GEAR (39 Teeth)  
9. 8M-4389 [1] SEAL  
10. 8S-6340 Y [1] GOVERNOR GROUP  
    (Separate Illustration)
11. 4F-2291 [1] KEY  
12. 8M-5251 [3] SEAL  
13. 9S-4191 [5] PLUG  
  3J-1907 [5] SEAL  
14. 5S-7053 [1] RING  
15. 5S-7770 [6] WASHER  
16. 5S-7037 [1] SHAFT  
17. 8S-0628 [1] COVER ASSEM.  
    (Includes)
18. 9S-5214 [1] BEARING  
19. 5B-5812 [1] DOWEL  
20. 7G-8265 C [1] SHAFT ASSEM.  
    (Includes)
21. 010-2571 [3] SETSCREW  
22. 1A-2029 [13] BOLT  
  3B-4506 [13] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

Information:

Caterpillar Parts SIS Catalog 637D :

VALVE GP-CUTOFF
9S-2818 VALVE GP-CUTOFF
VALVE GP-SELECTOR
8P-4221 VALVE GP-SELECTOR
VALVE GP-AUTOMATIC
3P-6661 VALVE GP-AUTOMATIC
SELECTOR VALVE GROUP
7S-6937 SELECTOR VALVE GROUP
VALVE GP-PRESSURE CONTROL
6P-3233 VALVE GP-PRESSURE CONTROL
VALVE GP-PRESSURE CONTROL
6P-3233 VALVE GP-PRESSURE CONTROL
VALVE GP-PRESSURE CONTROL
6P-3233 VALVE GP-PRESSURE CONTROL
VALVE GP-SHIFT PRESSURE
3P-2973 VALVE GP-SHIFT PRESSURE
TRANSMISSION ARRANGEMENT
3P-5856 TRANSMISSION ARRANGEMENT
TRANSMISSION ARRANGEMENT
3P-5856 TRANSMISSION ARRANGEMENT
TRANSMISSION AR
7G-4992 TRANSMISSION AR
TRANSFER CASE & GEAR GP
2P-9240 TRANSFER CASE & GEAR GP
TRANSFER CASE & GEAR GP
2P-9240 TRANSFER CASE & GEAR GP
TORQUE CONVERTER GP
1T-0910 TORQUE CONVERTER GP
PARTS & CASE GP
6P-1278 PARTS & CASE GP
GOVERNOR & DRIVE GP
5S-7930 GOVERNOR & DRIVE GP

Truck sale:

1979 CAT 637D
Call 
1979 CAT 637D

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

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

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

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

SEATTLE TRACTOR INT'L
Ravensdale, Washington