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3P4489 PRESSURE CONTROL GROUP--Replaced by 3P4490 shown on Page 41 Serial No. 50S739-Up, 55U174 to 55U179 and 55U181-Up and 94U109-Up Part of 2P1058 Transmission Hydraulic Control Group shown on Pages 40A & 40B 518


POWER TRAIN
CONTROL GP-TRANSMISSION HYD
OPERATOR STATION
CONTROL GP-TRANSMISSION
POWER TRAIN
VALVE GP-SELECTOR
FILTER GP
FILLER GP-POWER TRAIN OIL
PUMP GP
TRANSMISSION GP

WHEEL SKIDDER 518 WHEEL SKIDDER 50S
 518 SKIDDER 50S00597-01288 (MACHINE) UEG0741S 518 50S   (1971)

POWER TRAIN

CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
PRESSURE CONTROL GROUP
2P-1055 PRESSURE CONTROL GROUP
PRESSURE CONTROL GROUP
3P-4489 PRESSURE CONTROL GROUP
VALVE GP-HYDRAULIC PRESS CONT
3P-4490 VALVE GP-HYDRAULIC PRESS CONT
 

#UEG0741S0070
 

3P-4489: PRESSURE CONTROL GROUP

3P4489 PRESSURE CONTROL GROUP--Replaced by 3P4490 shown on Page 41
Serial No. 50S739-Up, 55U174 to 55U179 and 55U181-Up and 94U109-Up
Part of 2P1058 Transmission Hydraulic Control Group shown on Pages 40A & 40B
c211351 UEG0741S
3P4489 PRESSURE CONTROL GROUP Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-5287 [1] SPOOL ASSEM.  
2. 3D-8317 [1] RING  
3. 8M-1013 [1] RETAINER  
4. 4M-2381 [1] SPRING  
5. 1S-2121 [1] PLUNGER  
6. 5M-8009 [1] PIN  
7. 7M-1396 [1] SPACER 15.74 mm(.062 in.) thick  
  7M-1397 [2] SPACER 0.92 mm(.036 in.) thick  
  5M-3492 [3] SPACER 0.26 mm(.010 in.) thick  
8. 7S-4596 [1] SPRING (Outer)  
9. 7S-4595 [1] SPRING (Inner)  
10. 1P-2558 [1] BODY ASSEM.  
11. 7M-1201 [1] DOWEL  
12. 5F-9657 C [2] SEAL  
13. 1P-4128 [1] COVER  
14. 5S-4310 [1] STOP  
15. 3S-9950 [1] SPRING  
16. 1T-0414 [7] BOLT  
  9M-1974 [7] WASHER  
17. 7S-4594 [1] PISTON  
18. 3S-9951 [1] WASHER  
19. 3S-9949 [1] SPRING  
20. 3P-4491 [1] PLATE  
21. 1P-0561 [1] SPOOL  
22. 5M-6214 [3] PLUG  
23. 8S-3406 [1] SPOOL  
24. 2P-1951 [1] STOP  
25. 2P-1950 [1] COVER  
26. 5S-7906 [1] STOP  
27. 7B-3028 [1] SCREW  
28. 8M-8128 [1] SLUG  
29. 8H-5244 [1] DOWEL  
30. 2M-7041 [1] SLUG  
31. 1P-9620 [1] RING  
  C   INDICATES CHANGE
 

#UEG0741S0071
 

3P-4490: VALVE GP-HYDRAULIC PRESS CONT

3P4490 PRESSURE CONTROL GROUP--Field Installation
Serial No. 50S739-Up, 55U174 to 55U179 and 55U181-Up and 94U109-Up
c207646 UEG0741S
3P4490 VALVE GP-HYDRAULIC PRESS CONT Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-5287 [1] SPOOL ASSEM.  
2. 3D-8317 [1] RING  
3. 8M-1013 [1] RETAINER  
4. 4M-2381 [1] SPRING  
5. 1S-2121 [1] PLUNGER  
6. 5M-8009 [1] PIN  
7. 7M-1396 [1] SPACER (.062" Thick)  
  7M-1397 [2] SPACER (.036" Thick)  
  5M-3492 [3] SPACER (.010" Thick)  
8. 7S-4596 [1] SPRING (Outer)  
9. 7S-4595 [1] SPRING (Inner)  
10. 5S-4317 [1] BODY  
11. 7S-4594 [1] PISTON  
12. 5F-9657 C [2] SEAL  
13. 1P-4128 [1] COVER  
14. 5S-4310 [1] STOP  
15. 3S-9950 [1] SPRING  
16. 1T-0414 [7] BOLT  
  9M-1974 [7] WASHER  
17. 8M-4988 [1] SEAL  
18. 3S-9951 [1] WASHER  
19. 3S-9949 [1] SPRING  
20. 5S-1014 [1] SPOOL  
21. 1P-0561 [1] SPOOL  
22. 5M-6214 [3] PLUG  
23. 1P-9602 [1] SPRING  
24. 7S-6874 [1] STOP  
25. 2P-1950 [1] COVER  
26. 5S-7906 [1] STOP  
27. 8S-3406 [1] SPOOL  
28. 8M-8128 [1] SLUG  
29. 8H-5244 [1] DOWEL  
30. 2P-1951 [1] STOP  
31. 2M-7041 [1] SLUG  
32. 1P-9620 [1] RING  
  C   INDICATES CHANGE
 

#UEG0741S0072
 

8K-8194: CONTROL GP-TRANSMISSION

8K8194 TRANSMISSION CONTROL GROUP--Part 1 of 2
c169015 UEG0741S
8K8194 CONTROL GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1T-0416 [3] BOLT  
2. 6K-0053 [1] HOUSING  
3. 8K-6592 [1] RACK  
4. 1B-8705 [1] KEY  
5. 6K-7382 [1] LEVER  
6. 6K-0079 [1] LOCK  
7. 1V-1762 C [1] RING  
8. 2H-1650 [2] WASHER  
9. 8K-8175 [1] TUBE ASSEM.  
10. 8K-8177 [1] BUSHING  
11. 9K-3774 C [1] BUSHING ASSEM.  
  6K-7666 [1] CLAMP  
12. 5B-9079 [1] NUT  
13. 1A-2029 [1] BOLT  
14. 3B-4506 [5] LOCKWASHER  
15. 4B-4278 C [3] WASHER  
16. 9K-0097 [1] LEVER  
17. 3B-1915 [2] BOLT  
18. 4K-4726 [1] ROD END  
19. 0S-1591 [2] BOLT  
20. 1D-4717 C [4] NUT  
21. 4D-4064 [2] ROD END  
22. 1B-4203 [3] NUT  
23. 3B-4615 [1] COTTER PIN  
24. 1B-8706 [1] KEY  
25. 1V-3348 C [1] LEVER  
26. 1P-1900 [1] ROD  
27. 5J-5315 [1] ROD END  
28. 1B-8702 [1] KEY  
29. 6D-0082 [1] SPACER  
30. 8H-1037 [1] RING  
31. 5K-2294 [1] BEARING  
32. 8K-7435 C [1] ROD  
33. 1S-1150 [3] SPACER  
34. 0S-1590 C [1] BOLT  
35. 5B-5839 C [2] SPACER  
  C   INDICATES CHANGE
 

#UEG0741S0073
 

8K-8194: CONTROL GP-TRANSMISSION

8K8194 TRANSMISSION CONTROL GROUP--Part 2 of 2
c169016 UEG0741S
8K8194 CONTROL GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3K-1644 [1] SCREW  
2. 6K-5177 [1] HANDLE  
3. 8K-6769 [1] SHAFT ASSEM.  
4. 8K-8192 [1] COLLAR  
  4B-9806 [1] SCREW  
5. 3V-7427 C [1] HOUSING ASSEM.  
6. 1K-4682 [2] BEARING  
7. 9B-2232 [1] CAP  
  8M-8997 [1] SEAL  
8. 9S-8008 [1] PLUG  
  3D-2824 [1] SEAL  
9. 6B-9889 [1] SPRING  
  5B-9419 [1] BALL  
10. 9K-0485 [1] STUD  
11. 2M-8908 [1] KNOB  
12. 1D-4717 [3] NUT  
13. 6K-7706 [1] BOLT  
  2K-4973 [1] NUT  
  4K-8599 [1] WASHER  
14. 0L-1351 [2] BOLT  
15. 3B-4506 [4] LOCKWASHER  
16. 8K-8178 [1] FLANGE  
17. 2M-2489 [1] SEAL  
18. 0S-1571 [2] BOLT  
19. 4D-4064 [2] ROD END  
20. 1B-4203 [2] NUT  
21. 4M-5974 [1] ROD  
22. 8K-5472 [1] BRACKET  
23. 6K-0019 C [1] LEVER  
24. 2B-0947 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
25. 3B-1915 [3] BOLT  
26. 4B-4283 [1] WASHER  
27. 6D-5974 [2] BEARING  
28. 8K-7933 [1] BELLCRANK  
29. 1S-1150 [1] SPACER  
30. 3B-4629 [1] COTTER PIN  
31. 8K-8195 [1] SHAFT  
32. 5K-2294 [2] BEARING  
33. 7K-9061 [1] LEVER  
34. 1B-8706 [3] KEY  
35. 4B-4278 [4] WASHER (Use as required)  
36. 8K-0093 C [1] LEVER  
  C   INDICATES CHANGE
 

#UEG0741S0074
 

2P-1056: VALVE GP-SELECTOR

2P1056 SELECTOR VALVE GROUP--Type 1
Part of Transmission Hydraulic Control shown on Pages 40 and 40B
c112625 UEG0741S
2P1056 VALVE GP-SELECTOR Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] SPOOL  
2. [1] SPOOL  
3. [1] SPOOL  
4. [2] SCREW  
5. [2] BOLT  
6. [2] WASHER  
7. [1] COVER  
8. [1] PISTON  
9. [1] SEAL  
10. [1] SPACER  
11. [1] BODY  
 

#UEG0741S0075
 

2P-1056: VALVE GP-SELECTOR

2P1056 SELECTOR VALVE GROUP--Type 2
Part of Transmission Hydraulic Control shown on Pages 40, 40A and 40B
c152311 UEG0741S
2P1056 VALVE GP-SELECTOR Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-8496 [1] SPOOL  
2. 7S-8487 [1] SPOOL  
3. 7S-8488 [1] SPOOL  
4. 1K-6977 C [1] SCREW  
5. 1T-0414 [2] BOLT  
6. 9M-1974 [2] WASHER  
7. 7S-6997 [1] COVER  
8. 7S-7020 [1] PISTON  
9. 6J-2419 [1] SEAL  
10. 4B-1804 [1] SPACER  
11. [1] BODY  
12. 6P-1720 C [1] SETSCREW  
  8M-7587 [1] LOCK  
  C   INDICATES CHANGE
 

#UEG0741S0076
 

2S-6457: FILTER GP-TRANSMISSION

2S6457 TRANSMISSION FILTER GROUP
Part of 9S5223 and 3P9402 Transmission Arrangements
shown on Pages 30, 30A and 30B
c215432 UEG0741S
2S6457 FILTER GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

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-
  3G-3467 H [1] ELEMENT  
    (Fire Resistant Fluid)
13. 1P-9600 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
 

#UEG0741S0077
 

8K-5018: FILLER GP-POWER TRAIN OIL

8K5018 TRANSMISSION OIL FILLER GROUP
c112607 UEG0741S
8K5018 FILLER GP-POWER TRAIN OIL Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] CAP ASSEM.  
2. [1] ANCHOR  
3. [1] TUBE ASSEM.  
4. [1] BOLT  
5. [2] LOCKWASHER  
6. [1] GASKET  
7. [1] BOLT  
8. [1] PLUNGER ASSEM.  
  [1] CAP  
 

#UEG0741S0078
 

1P-5279: TRANSMISSION PUMP GROUP

1P5279 TRANSMISSION PUMP GROUP
Serial No. 50S597 to 843, 845 to 977 and 50S979 inclusive, 55U152 to 55U189
and 55U191 to 55U222 inclusive and 94U1 to 94U130 and 94U132 to 94U168
inclusive. Part of 9S5223 and 3P9402 Transmission Arrangements shown
on Pages 30 and 30B
c112622 UEG0741S
1P5279 TRANSMISSION PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [2] SEAL  
2. [1] GEAR (26 Teeth- Idler)  
3. [1] BODY ASSEM.  
4. [4] DOWEL  
5. [2] BOLT  
6. [1] SEAL  
7. [1] COVER ASSEM.  
8. [2] BEARING  
9. [1] GEAR (26 Teeth Drive)  
10. [1] COVER ASSEM.  
  [2] BEARING  
 

#UEG0741S0079
 

7K-9626: SUPPORT GP-TRANSMISSION

TRANSMISSION SUPPORT (7K9626 N/S)
Serial No. 50S597 to 50S664 inclusive, 55U152 to 55U161
inclusive and 94U1 to 94U87 inclusive
c119432 UEG0741S
7K9626 SUPPORT GP-TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [2] SUPPORT ASSEM.  
2. C [4] BOLT  
  [4] LOCKWASHER  
3. C [2] BAR  
4. [8] BOLT  
  [8] LOCKWASHER  
5. [12] BOLT  
  [12] LOCKWASHER  
  C   INDICATES CHANGE
 

Information:

Specifications
Hydraulic Controls For The Transmission<BR> (2P1058)
518 SKIDDER POWER TRAIN
Pressure Control Valve<BR> (2P1055)
518 SKIDDER POWER TRAIN
Hydraulic Controls For The Transmission
518 SKIDDER POWER TRAIN SPECIFICATIONS
Pressure Control Valve
518 SKIDDER POWER TRAIN SPECIFICATIONS
Bench Test Procedures
Bench Test Procedure For a 518 Wheel Skidder Transmission {3030, 3073}
Bench Test Procedure For a 518 Wheel Skidder Transmission {3030, 3073}
Disassembly and Assembly
Transmission Hydraulic Control Valves
518 SKIDDER POWER TRAIN
Transmission Hydraulic Control Valves
518 SERIES II LOG SKIDDER AND GRAPPLE SKIDDER POWER TRAIN
Service Magazine
New Transmission Valve Groups Increase Winch Line Pull When Transmission Is In Neutral{3150,3152,3157,3167,3100}
1978/02/20

Caterpillar Parts SIS Catalog 518 :

PRESSURE CONTROL GROUP
2P-1055 PRESSURE CONTROL GROUP
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
CONTROL GP-TRANSMISSION HYD
2P-1058 CONTROL GP-TRANSMISSION HYD
3P-9401 CASE & TRANSFER GEAR GP
CASE & TRANSFER GEAR GP
3P-9401 CASE & TRANSFER GEAR GP
3P-9401 CASE & TRANSFER GEAR GP
CASE & TRANSFER GEAR GP
3P-9401 CASE & TRANSFER GEAR GP
VALVE GP-HYDRAULIC PRESS CONT
3P-4490 VALVE GP-HYDRAULIC PRESS CONT
CONTROL GP-TRANSMISSION
8K-8194 CONTROL GP-TRANSMISSION
8K-8194 CONTROL GP-TRANSMISSION
VALVE GP-SELECTOR
2P-1056 VALVE GP-SELECTOR
VALVE GP-SELECTOR
2P-1056 VALVE GP-SELECTOR
FILTER GP-TRANSMISSION
2S-6457 FILTER GP-TRANSMISSION
FILLER GP-POWER TRAIN OIL
8K-5018 FILLER GP-POWER TRAIN OIL
TRANSMISSION PUMP GROUP
1P-5279 TRANSMISSION PUMP GROUP

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