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4S8686 PLANETARY TRANSMISSION GROUP--Part 2 of 2 Serial No. 80H556, 558, 562, 565, 567, 569 to 571, 573, 575 to 577, 579, 582 to 585, 587, 590 to 602, 604 to 618, 620, 622 to 627, 629 to 632, 634 to 648, 650, 652 to 661, 663 to 667, 669 to 671, 673 to 697, 699 to 756, 758 to 761 and 80H763-Up and Test No. 2372-Up. Part of Transmission and 9S2812 Transmission Group shown on Pages 59 and 142F 941


POWER TRAIN
TRANSMISSION GP
GEAR GP
OPERATOR STATION
CONTROL GP-HYDRAULIC
POWER TRAIN
VALVE GP-SELECTOR
VALVE GP-PRESSURE CONTROL
PUMP GP
FILTER GP


POWER TRAIN

TRANSMISSION GP
 

#UE0701130130
 

4S-8686: PLANETARY TRANSMISSION GROUP

4S8686 PLANETARY TRANSMISSION GROUP--Part 2 of 2
Serial No. 80H556, 558, 562, 565, 567, 569 to 571, 573, 575 to 577, 579, 582 to 585, 587, 590 to 602, 604 to 618, 620,
622 to 627, 629 to 632, 634 to 648, 650, 652 to 661, 663 to 667, 669 to 671, 673 to 697, 699 to 756, 758 to 761 and
80H763-Up and Test No. 2372-Up. Part of Transmission and 9S2812 Transmission Group shown on Pages 59 and 142F
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0L-1329 [10] BOLT  
2. 7S-8553 C [10] SPRING  
3. 1M-3151 [5] PIN  
4. 2M-0849 [21] WASHER  
5. 8S-6270 C [1] HOUSING ASSEM.  
  4D-6472 [2] DOWEL  
6. 3S-7980 [3] GEAR (20 Teeth)  
7. 4M-8747 [3] GEAR (20 Teeth)  
8. 8S-3370 [5] RING  
9. 4S-8687 [5] PISTON  
10. 4S-8703 [1] RING  
11. 5M-2055 [21] BEARING  
12. 5S-0884 [1] GEAR (74 Teeth)  
13. 4M-9641 [2] BOLT  
14. 2S-8926 [9] BOLT  
15. 5S-0885 [1] PLATE  
16. 3S-8007 R [1] GEAR  
17. 1M-4169 [4] RING  
18. 9F-3823 [1] RING  
19. 4S-8720 [1] CARRIER ASSEM.  
20. 9M-2001 [1] DOWEL  
21. 4S-8706 [1] SLEEVE  
22. 2H-8050 C [2] RING  
23. 5S-7878 [3] RING  
24. 5S-7877 [3] BEARING  
25. 4M-5016 [20] SPRING  
26. 3S-8109 [14] PIN  
27. 3K-2511 [5] PIN  
28. 5S-0887 [1] CARRIER  
29. 4M-9592 [10] SPRING  
30. 4S-8713 [1] GEAR (75 Teeth)  
31. 4S-8707 [1] SHAFT & SUN GEAR (36 Teeth)  
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UE0701130131
 

TRANSFER GEARS

TRANSFER GEARS
Serial No. 80H1 to 555, 557, 559 to 561, 563, 564, 566, 568, 572, 574, 578,
580, 581, 586, 588, 589, 603, 619, 621, 628, 633, 649, 651, 662, 668, 672,
698, 757 and 80H762 inclusive. Part of Transmission shown on Page 59
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-5924 [1] SEAL  
2. 8M-4432 [4] SEAL  
3. 4B-8351 [1] OUTER RACE  
4. 5H-6199 [1] RING  
5. 4B-8352 [1] INNER RACE AND ROLLER ASSEM.  
6. 4B-9880 [1] BALL  
7. 5H-0033 [1] SEAL  
8. 0S-1587 [12] BOLT  
  3B-4508 [12] LOCKWASHER  
9. 5S-0913 [1] CASE  
10. 4S-8698 [1] CAGE  
11. [7] BOLT  
  4K-5420 [2] LOCK  
12. 4S-8715 [1] SHAFT (12 Teeth)  
13. 3K-3036 [1] BEARING ASSEM.  
14. 4K-5081 [1] RETAINER  
15. 4K-5082 [2] SHIM PACK  
16. 5M-7908 [1] PLUG ASSEM.  
  3J-1907 [1] SEAL  
    (Part of 5M7908 Plug Assem.)
 

#UE0701130132
 

4S-8710: GEAR GP-TRANSFER

TRANSFER GEARS (4S8710 N/S)
Serial No. 80H556, 558, 562, 565, 567, 569 to 571, 573, 575 to 577, 579, 582 to 585,
587, 590 to 602, 604 to 618, 620, 622 to 627, 629 to 632, 634 to 648, 650, 652 to
661, 663 to 667, 669 to 671, 673 to 697, 699 to 756, 758 to 761 and 80H763-Up
and Test No. 2372-Up. Part of Transmission shown on Page 59
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [4] SEAL  
2. [1] SEAL  
3. C [8] BOLT  
  C [4] LOCK  
4. C [2] RING  
5. [1] RACE  
6. [1] INNER RACE AND ROLLER ASSEM.  
7. C [1] RING  
8. C [1] INNER RACE AND ROLLER ASSEM.  
9. C [1] RACE  
10. C [1] GEAR ASSEM. (81 Teeth)  
  [1] DOWEL  
11. [1] RING  
12. [1] BALL  
13. C [1] MANIFOLD ASSEM.  
14. [1] CARRIER  
15. [12] BOLT  
  [12] LOCKWASHER  
16. [1] CASE  
17. [1] CAGE  
18. C [7] BOLT  
  [2] LOCK  
19. [1] SHAFT (12 Teeth)  
20. [1] BEARING ASSEM.  
21. [1] RETAINER  
22. [2] SHIM PACK  
23. [1] SEAL  
24. C [1] PLUG  
  C [1] SEAL  
  C   INDICATES CHANGE
 

#UE0701130133
 

3S-9955: CONTROL GP-HYDRAULIC

3S9955 TRANSMISSION HYDRAULIC CONTROL GROUP
Part of Transmission and 9S2812 Transmission Group shown on Pages 59 and 142D
3S9977 and 7S4621 Valve parts are shown on Pages 64, 65 and 65B
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3S-9932 [2] SLEEVE  
2. 8M-4438 [4] SEAL  
3. 8S-9101 [1] CLIP  
4. 9H-0223 [2] SEAL  
5. 3S-9931 [1] SLEEVE  
6. 8M-4389 [11] SEAL  
7. 7B-2500 [1] RING  
8. 8S-6355 [1] PLATE  
9. 3S-9977 Y [1] VALVE GROUP  
    (See Separate Illustration)
10. 3S-9933 [2] SLEEVE  
11. 7S-4621 Y [1] VALVE GROUP  
    (See Separate Illustration)
12. 3S-4346 [18] BOLT  
13. 9M-1974 [18] WASHER  
14. 1A-5964 [4] BOLT  
15. 5M-2894 [6] WASHER  
16. 9M-8186 [2] WASHER  
17. 3S-9930 [2] SHAFT  
18. 1M-8147 [2] RING  
19. 3S-9934 [2] LINK  
20. 0S-1571 [2] BOLT  
21. 3S-9929 [2] LEVER  
  Y   SEPARATE ILLUSTRATION
 

#UE0701130134
 

3S-9977: SELECTOR VALVE GROUP

3S9977 SELECTOR VALVE GROUP
Serial No. 80H1 to 80H2398, 2400, 2402, 2404 to 2413, 2416, 2419 to 2422, 2424, 2425, 2427 and
80H2433 inclusive. Test No. 1 to 10261 inclusive. Part of 3S9955 Transmission Hydraulic
Control Group shown on Page 63
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-4607 [2] DETENT ASSEM.  
2. 4H-3119 [1] PIN  
3. 3S-9953 [1] STOP  
4. 3S-9947 [1] SPOOL  
5. 3S-9937 [1] STOP  
6. 3S-9936 [1] SPRING  
7. 5B-3135 [1] BOLT  
8. 4L-3754 [1] LOCK  
9. 3S-9938 [1] SPOOL  
10. 3S-9939 [1] SPOOL  
11. [1] BODY  
12. 5M-5693 [1] WASHER  
13. 9M-1974 [1] WASHER  
14. 1A-9579 [1] BOLT  
 

#UE0701130135
 

3S-9977: SELECTOR VALVE GROUP

3S9977 SELECTOR VALVE GROUP
Serial No. 80H2399, 2401, 2403, 2414, 2415, 2417, 2418, 2423, 2426, 2428 to 2432 and 80H2434-Up
and Test No. 10262-Up. Part of 3S9955 Transmission Hydraulic Control Group shown on Page 63
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [2] DETENT ASSEM.  
2. [1] PIN  
3. [1] STOP  
4. [1] SPOOL  
5. [1] STOP  
6. [1] SPRING  
7. C [1] PLUG  
8. [1] LOCK  
9. [1] SPOOL  
10. [1] SPOOL  
11. [1] BODY  
12. [1] WASHER  
13. [1] WASHER  
14. [1] BOLT  
  C   INDICATES CHANGE
 

#UE0701130136
 

7S-4621: VALVE GP-PRESSURE CONTROL

7S4621 PRESSURE CONTROL VALVE GROUP
Serial No. 80H1 to 80H1262 inclusive. Part of 3S9955 & 2P9185 Transmission Hydraulic Control Groups shown on Pages 63 and 142H
Refer also to Page 132D for special parts
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-8654 [1] STOP  
2. 8S-3354 [1] SPOOL  
3. 3S-9949 [1] SPRING (Inner)  
4. 3S-9951 [1] WASHER  
5. 3S-9950 [1] SPRING (Outer)  
6. 8M-5248 [1] SEAL  
7. 3S-9941 [1] COVER  
8. 3S-9948 [1] PLUG  
9. 7S-4594 [1] PISTON  
10. 8M-5254 [1] SEAL  
11. 0L-1351 [7] BOLT  
12. 7S-4595 [1] SPRING (Inner)  
13. 7B-3039 [1] SPRING  
14. 3S-9940 [1] POPPET  
15. 5D-4822 [1] RING  
16. 7S-4596 [1] SPRING (Outer)  
17. 5M-6214 [4] PLUG  
18. 7M-1396 [1] SPACER (.062" Thick)  
  7M-1397 [2] SPACER (.036" Thick)  
  5M-3492 [3] SPACER (.010" Thick)  
19. 7S-4609 [1] SPOOL ASSEM.  
20. 5M-8009 [1] PIN  
21. 4M-2381 [1] SPRING  
22. 1S-2121 [1] PLUNGER  
23. 3D-8317 [1] RING  
24. 8M-1013 [1] RETAINER  
    (Parts of 7S4609 Spool Assem.)
25. 2M-7041 [1] SLUG  
26. 5S-7858 [1] PLATE  
 

#UE0701130137
 

7S-4621: VALVE GP-PRESSURE CONTROL

7S4621 PRESSURE CONTROL VALVE GROUP
Serial No. 80H1263-Up & Test No. 5075-Up. Part of 3S9955 & 2P9185
Transmission Hydraulic Control Groups shown on Pages 63 and 142H
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-8654 [1] STOP  
2. 1P-0561 C [1] SPOOL  
3. 3S-9949 [1] SPRING (Inner)  
4. 3S-9951 [1] WASHER  
5. 3S-9950 [1] SPRING (Outer)  
6. 8M-5248 [1] SEAL  
7. 3S-9941 [1] COVER  
8. 3S-9948 [1] PLUG  
9. 7S-4594 [1] PISTON  
10. 8M-5254 [1] SEAL  
11. 0L-1351 C [3] BOLT  
12. 7S-4595 [1] SPRING (Inner)  
13. 7B-3039 [1] SPRING  
14. 3S-9940 [1] POPPET  
15. 5D-4822 [1] RING  
16. 7S-4596 [1] SPRING (Outer)  
17. 5M-6214 [4] PLUG  
18. 7M-1396 [1] SPACER (.062" Thick)  
  7M-1397 [2] SPACER (.036" Thick)  
  5M-3492 [3] SPACER (.010" Thick)  
19. 9S-8440 [1] SPOOL ASSEM.  
20. 5M-8009 [1] PIN  
21. 4M-2381 [1] SPRING  
22. 1S-2121 [1] PLUNGER  
23. 3D-8317 [1] RING  
24. 8M-1013 [1] RETAINER  
25. 2M-7041 [1] SLUG  
26. 9S-8442 C [1] PLATE  
27. 0S-1594 C [4] BOLT  
  C   INDICATES CHANGE
 

#UE0701130138
 

4S-8660: PUMP GP-TRANSMISSION

4S8660 TRANSMISSION PUMP GROUP
Part of 4S5950, 4S5951 & 9S2767 Transmission
Arrangements shown on Pages 53, 142 & 142C
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5M-7908 [1] PLUG AS  
  3J-1907 [1] SEAL  
2. 4S-8634 [1] BASE AS-OIL PUMP  
3. 2S-7931 [2] BEARING  
4. 4S-5908 [1] BODY AS-OIL PUMP  
5. 8M-8489 [4] DOWEL  
6. 2S-7910 [1] COVER AS-PUMP  
7. 2S-7931 [2] BEARING  
8. 4M-0189 [2] SEAL-O-RING  
9. 4S-8659 [1] GEAR AS-OIL PUMP (10 TEETH)  
10. 0L-2070 [4] BOLT  
11. 3S-0004 [4] WASHER  
12. 4S-9001 [1] GEAR AS-OIL PUMP (10 TEETH)  
 

#UE0701130139
 

4S-8679: TRANSMISSION OIL FILTER GROUP

4S8679 TRANSMISSION OIL FILTER GROUP
Part of 4S5950, 4S5951 & 9S2767 Transmission
Arrangements shown on Pages 53, 142 & 142C
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Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8M-5248 [ 2] SEAL  
2. 2H-3928 [ 1] SEAL  
3. 2B-0947 [ 2] BOLT  
4. 7B-3235 [ 3] BOLT  
5. 4S-5830 [ 1] COVER GROUP  
6. 4S-8566 [ 1] PLUG ASSEM.  
7. 3D-2824 [ 1] SEAL  
    (Part of 4s8566 Plug Assem.)
8. 4M-7945 [ 1] SPRING  
9. 5M-7908 [ 1] PLUG ASSEM.  
  3J-1907 [ 1] SEAL  
    (Part of 5M7908 Plug Assem.)
10. 2S-6466 [ 1] SPOOL  
    (Parts of 4s5830 Cover Group)
11. 5K-1770 [ 1] SEAL  
12. 9M-9740 [ 1] ELEMENT ASSEM. (Disposable)  
13. 8F-8882 [ 2] SEAL  
14. 3S-4398 [ 1] STUD  
15. 2H-3788 [ 1] NUT  
16. 2S-6462 [ 1] RETAINER  
 

Information:

Special Instruction
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Specifications
Transmission Pump<BR> (4S8660)
941 TRACK-TYPE LOADER POWER TRAIN
Transmission
941 TRACK-TYPE LOADER POWER TRAIN
Hydraulic Controls For The Transmission
941 TRACK-TYPE LOADER POWER TRAIN
Transmission Filter<BR> (4S8679)
941 TRACK-TYPE LOADER POWER TRAIN
Engine Mounting Bolts
3304 VEHICULAR ENGINE
Tool Operating Manual
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
Reuse And Salvage Guidelines
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
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}
Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}
Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}
Transmission Clutch Plates and Disc Assemblies with Cellulose Friction Material {3030, 3155, 3190}
Transmission Clutch Plates and Disc Assemblies with Cellulose Friction Material {3030, 3155, 3190}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}
Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}
Transmission Reuse and Salvage Manual Contents {0374, 3030}
Transmission Reuse and Salvage Manual Contents {0374, 3030}
Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}
Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}
Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}
Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Bearing Bores in Hydrostatic Transmission Cases{3030, 3064, 3064, 7551}
Bearing Bores in Hydrostatic Transmission Cases{3030, 3064, 3064, 7551}
Reuse and Salvage of Transmission Components {3030}
Reuse and Salvage of Transmission Components {3030}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}
Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}
Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}
Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}
Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}
Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}
Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}
Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}
Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}
Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}
Contamination Control Guidelines
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Testing and Adjusting
Testing And Adjusting
POWER SHIFT TRANSMISSION
Testing And Adjusting
941/951 POWER SHIFT TRANSMISSION
Bench Test Procedures
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}
Service Magazine

Caterpillar Parts SIS Catalog 941 :

Truck sale:

3,000 
Caterpillar 941, Construction
- track loaders
MICHIGAN CAT
USD $13,750 
1974 CAT 941

WESTERN MICHIGAN EQUIPMENT
Traverse City, Michigan
Call 
1980 CAT 941

DDG Equipment
USD $5,500 
1974 CAT 941

RP Equipment
Allentown, Pennsylvania
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AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.