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8J1874 VALVE GROUP Serial No. 55U272-Up and 95U1-Up Part of 9K318 Hydraulic Hand Control Group shown on Page 176 8J7242, 8J7243, 8J7244 and 8J7255 Valve parts are shown on Pages 180, 180A & 181 518


HYDRAULIC SYSTEM
VALVE GP
VALVE GP-CONTROL
VALVE GP-RELIEF
VALVE GP-CONTROL
LINES GP-HYDRAULIC

WHEEL SKIDDER 518 WHEEL SKIDDER 50S
 518 SKIDDER 50S01289-03229 (MACHINE) POWERED BY 3304 ENGINE SEBP1049 518 50S   (1971)

HYDRAULIC SYSTEM

VALVE GP
GRAPPLE CONTROL VALVE GROUP
8J-1873 GRAPPLE CONTROL VALVE GROUP
VALVE GROUP
8J-1874 VALVE GROUP
 

#SEBP10490560
 

8J-1874: VALVE GROUP

8J1874 VALVE GROUP
Serial No. 55U272-Up and 95U1-Up
Part of 9K318 Hydraulic Hand Control Group shown on Page 176
8J7242, 8J7243, 8J7244 and 8J7255 Valve parts are shown on Pages 180, 180A & 181
c163222 SEBP1049
8J1874 VALVE 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. 8J-7242 Y [1] VALVE GROUP  
2. 8J-7255 Y [1] VALVE GROUP  
3. 8J-7244 Y [1] VALVE GROUP  
4. 8J-7243 Y [1] VALVE GROUP  
    (See Separate Illustration)
5. 6B-1557 C [4] BOLT  
  3B-4506 [4] LOCKWASHER  
6. 4K-4986 [3] SEAL  
7. 5K-9090 [6] SEAL  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10490561
 

8J-7242: VALVE GP-CONTROL

8J7242 CONTROL VALVE GROUP--Boom
Serial No. 55U272-Up and 95U1-Up
Part of 8J1873 and 8J1874 Valve Groups shown on Pages 178 & 179
c233807 SEBP1049
8J7242 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-7270 C [1] VALVE GROUP  
    (Includes)
2. 4K-1388 [1] SEAL  
3. 8J-2410 [1] DIAPHRAM  
4. 4B-3057 [1] PIN  
5. 7H-9737 [1] COTTER PIN  
6. 6K-5974 C [2] SEAL  
7. 8J-2418 [4] LOCKWASHER  
8. 8J-2395 [2] COLLAR  
9. 8J-2397 [1] COLLAR  
10. 8J-2396 [1] SPRING  
11. 1L-0509 [1] SCREW  
12. 8J-2564 [1] LOCKWASHER  
13. 8J-2416 [1] COVER  
14. 4B-1323 [4] MACHINE SCREW  
15. 8J-7248 [2] VALVE GROUP (Relief)  
  8J-7269 [3] SHIM  
16. 005-8592 [1] SEAL  
17. 5L-4759 [1] SEAL  
18. 8J-7246 [1] PLUG ASSEM.  
  4K-1388 [1] SEAL (Large)  
  8J-2413 [1] SEAL (Small)  
  8J-2414 [1] WASHER  
  C   INDICATES CHANGE
 

#SEBP10490562
 

8J-7243: VALVE GP-CONTROL

8J7243 CONTROL VALVE GROUP--Tong--Type 1
Serial No. 55U272-Up and 95U1-Up
Part of 8J1873 and 8J1874 Valve Groups shown on Pages 178 & 179
c207316 SEBP1049
8J7243 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4K-1388 [1] SEAL  
2. 8J-2409 [1] PLUG  
3. 8J-2407 [1] SPRING  
4. 8J-2408 [1] POPPET  
5. 4B-3057 [1] PIN  
  7H-9737 [1] COTTER PIN  
6. 6K-5974 C [2] SEAL  
7. 6L-8355 [1] PLUG  
8. 8J-2395 [2] COLLAR  
9. 8J-2397 [1] COLLAR  
10. 8J-2396 [1] SPRING  
11. 1L-0509 [1] SCREW  
  8J-2564 [1] WASHER  
12. 8J-2410 [1] DIAPHRAM  
13. 8J-2416 [1] COVER  
14. 4B-1323 [4] MACHINE SCREW  
  8J-2418 [4] LOCKWASHER  
  C   INDICATES CHANGE
 

#SEBP10490563
 

8J-7243: VALVE GP-CONTROL

8J7243 CONTROL VALVE GROUP--Tong--Type 2
Serial No. 55U272-Up and 95U1-Up
Part of 8J1873 and 8J1874 Valve Groups shown on Pages 178 & 179
3G4386 Valve parts are shown on Page 180A
c221481 SEBP1049
8J7243 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-7270 C [1] VALVE GROUP  
    (Includes)
2. 4K-1388 [1] SEAL  
3. 3G-4386 YC [1] VALVE GROUP  
    (Separate Illustration)
4. 8J-2416 [1] COVER  
5. 4B-3057 [1] PIN  
  7H-9737 [1] COTTER PIN  
6. 6K-5974 [2] SEAL  
7. 6L-8355 [1] PLUG  
8. 8J-2395 [2] COLLAR  
9. 8J-2397 [1] COLLAR  
10. 8J-2396 [1] SPRING  
11. 1L-0509 [1] SCREW  
  8J-2564 [1] WASHER  
12. 8J-2410 [1] DIAPHRAM  
13. 4B-1323 [4] MACHINE SCREW  
  8J-2418 [4] LOCKWASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#SEBP10490564
 

3G-4386: VALVE GP-RELIEF

3G4386 RELIEF VALVE GROUP--Direct Operated
Part of 8J7243 Control Valve Group shown on Page 180A
c212892 SEBP1049
3G4386 VALVE GP-RELIEF Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-4377 [2] RING  
2. 5L-4759 [1] SEAL  
3. 8J-7270 [7] SHIM  
4. 005-8592 [1] SEAL  
5. 2M-9780 [1] SEAL  
 

#SEBP10490565
 

8J-7244: VALVE GP-CONTROL

8J7244 CONTROL VALVE GROUP--Tong
Serial No. 55U272-Up and 95U1-Up
Part of 8J1873 and 8J1874 Valve Groups shown on Pages 178 & 179
c233811 SEBP1049
8J7244 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-7270 C [1] VALVE GROUP  
    (Includes)
2. 4K-1388 [1] SEAL  
3. 4B-3057 [1] PIN  
4. 7H-9737 [1] COTTER PIN  
5. 6K-5974 C [2] SEAL  
6. 4B-1323 [4] SCREW  
7. 8J-2418 [4] LOCKWASHER  
8. 8J-2395 [2] COLLAR  
9. 8J-2397 [1] COLLAR  
10. 8J-2396 [1] SPRING  
11. 1L-0509 [1] SCREW  
  8J-2564 [1] LOCKWASHER  
12. 8J-2410 [1] DIAPHRAM  
13. 8J-2416 [1] COVER  
14. 8J-7247 [1] VALVE GROUP (Relief)  
  8J-7270 [3] SHIM  
15. 5L-4759 [1] SEAL  
16. 005-8592 [1] SEAL  
17. 2M-9780 [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP10490566
 

8J-7255: CONTROL VALVE GROUP

8J7255 CONTROL VALVE GROUP--Boom
Serial No. 55U272-Up and 95U1-Up
Part of 8J1874 Valve Group shown on Page 179
c207659 SEBP1049
8J7255 CONTROL VALVE 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. 4K-1388 [1] SEAL  
2. 8J-2409 [1] PLUG  
3. 8J-2407 [1] SPRING  
4. 8J-2408 [1] POPPET  
5. 4B-3057 [1] PIN  
  7H-9737 [1] COTTER PIN  
6. 6K-5974 C [2] SEAL  
7. 4B-1323 [4] MACHINE SCREW  
  8J-2418 [4] LOCKWASHER  
8. 8J-2395 [2] COLLAR  
9. 8J-2397 [1] COLLAR  
10. 8J-2396 [1] SPRING  
11. 1L-0509 [1] SCREW  
  8J-2564 [1] LOCKWASHER  
12. 8J-2410 [1] DIAPHRAM  
13. 8J-2416 [1] COVER  
14. 8J-7248 [1] VALVE GROUP (Relief)  
  8J-7269 [3] SHIM  
15. 5L-4759 [1] SEAL  
16. 005-8592 [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP10490567
 

9K-0915: REAR HYDRAULIC LINES GROUP

9K915 REAR HYDRAULIC LINES GROUP--Part 1 of 2
Serial No. 55U272 to 55U345 inclusive and 95U1-Up
c154283 SEBP1049
9K0915 REAR HYDRAULIC LINES 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. 3R-9704 [6] ELBOW  
2. 9K-1242 [6] CONNECTOR  
  4K-1388 [6] SEAL  
3. 0S-1587 [12] BOLT  
  1V-8576 C [12] SPACER  
4. 3B-4508 [28] LOCKWASHER  
5. 9K-1241 [2] BAR  
6. 9K-0987 [1] TUBE ASSEM. (R.H.)  
  9K-0988 [1] TUBE ASSEM. (L.H.)  
7. 9K-0983 [1] TUBE ASSEM. (R.H.)  
  9K-0984 [1] TUBE ASSEM. (L.H.)  
8. 9K-0991 [1] TUBE ASSEM. (R.H.)  
  9K-0992 [1] TUBE ASSEM. (L.H.)  
9. 9K-1373 [2] BAR  
10. 9K-1250 [2] ANGLE  
11. 0S-1594 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  4B-4278 [4] WASHER  
12. 6K-8420 [4] LOCKNUT  
13. 9K-1247 [2] HOSE ASSEM.  
    (Each Includes)
  9S-0128 [2] COUPLING ASSEM.  
14. 3S-8606 [2] SLEEVE  
15. 5P-0179 H HOSE 175.76 cm(69.2 in.)  
16. 2P-7731 [2] CLAMP  
17. 6K-5573 [2] STUD  
18. 1D-4719 [8] NUT  
19. 9K-1251 [6] CLAMP  
20. 9K-1252 [4] CLAMP  
21. 9K-1249 [2] HOSE ASSEM.  
    (Each Includes)
  5P-0179 HOSE 175.76 cm(69.2 in.)  
22. 3S-8606 [2] SLEEVE  
23. 9S-0128 [2] COUPLING ASSEM.  
24. 0S-1585 [6] BOLT  
25. 9K-0420 [1] BRACKET ASSEM. (R.H.)  
    (Includes)
26. 9K-0416 [1] STUD  
27. 9K-0421 [1] BRACKET ASSEM. (L.H.)  
    (Includes)
28. 9K-0416 [1] STUD  
29. 9K-1246 [2] HOSE ASSEM.  
    (Each Includes)
  5P-0179 H HOSE 165.5 cm(65.16 in.)  
30. 3S-8606 [2] SLEEVE  
31. 9S-0128 [2] COUPLING ASSEM.  
32. 7B-3235 [4] BOLT  
33. 2V-1158 C [1] BRACKET (R.H.)  
  2V-1157 C [1] BRACKET (L.H.)  
34. 2P-1283 [6] UNION  
  C   INDICATES CHANGE
  H   ORDER BY THE CENTIMETRE
 

#SEBP10490568
 

9K-0915: REAR HYDRAULIC LINES GROUP

9K915 REAR HYDRAULIC LINES GROUP--Part 2 of 2
Serial No. 55U272 to 55U345 inclusive and 95U1-Up
c154284 SEBP1049
9K0915 REAR HYDRAULIC LINES 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. 030-7935 [1] CONNECTOR  
2. 7M-8485 [5] SEAL  
3. 030-7951 [2] ELBOW  
4. 9K-1032 [1] TUBE ASSEM.  
5. 9K-1036 [1] TUBE ASSEM.  
    (Includes)
6. 5K-6816 [1] CLIP  
7. 9K-1026 [1] TUBE ASSEM.  
8. 9K-1030 [1] TUBE ASSEM.  
    (Includes)
  5K-6816 [1] CLIP  
9. 0S-1585 [2] BOLT  
10. 3B-4508 [7] LOCKWASHER  
  4B-4280 [11] WASHER  
11. 0S-1621 [2] BOLT 1 in. (2.54 cm) long  
12. 9K-1618 [2] HOSE ASSEM.  
    (Each Includes)
  8S-3918 [2] COUPLING ASSEM.  
13. 3S-7252 [2] SLEEVE  
14. 5P-0181 CH HOSE 73.4 cm (28.9 in.)  
15. 5P-0112 [2] ADAPTER  
16. 9L-4007 C [1] FITTING  
17. 1D-4719 [3] NUT  
18. 9K-8397 [1] BRACKET ASSEM.  
19. 0S-1587 [3] BOLT  
20. 9K-1638 [1] PLATE ASSEM.  
21. 9K-8621 [1] TUBE ASSEM.  
    (Includes)
22. 5K-6816 [1] CLIP  
23. 9K-0838 [1] TUBE ASSEM.  
    (Includes)
24. 5K-6816 [1] CLIP  
  C   INDICATES CHANGE
  H   ORDER BY THE CENTIMETRE
 

#SEBP10490569
 

9K-0915: REAR HYDRAULIC LINES GROUP

9K915 REAR HYDRAULIC LINES GROUP--Part 1 of 2
Serial No. 55U346 to 55U527 inclusive
c163260 SEBP1049
9K0915 REAR HYDRAULIC LINES 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. 3R-9704 [6] ELBOW  
2. 9K-1242 [6] CONNECTOR  
  4K-1388 [6] SEAL  
3. 0S-1587 [12] BOLT  
  1V-8576 [12] SPACER  
4. 3B-4508 [28] LOCKWASHER  
5. 9K-1241 [2] BAR  
6. 9K-0987 [1] TUBE ASSEM. (R.H.)  
  9K-0988 [1] TUBE ASSEM. (L.H.)  
7. 9K-0983 [1] TUBE ASSEM. (R.H.)  
  9K-0984 [1] TUBE ASSEM. (L.H.)  
8. 9K-0991 [1] TUBE ASSEM. (R.H.)  
  9K-0992 [1] TUBE ASSEM. (L.H.)  
9. 9K-1373 [2] BAR  
10. 9K-1250 [2] ANGLE  
11. 0S-1594 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  4B-4278 [4] WASHER  
12. 6K-8420 [4] LOCKNUT  
13. 9K-1247 [2] HOSE ASSEM.  
    (Each Includes)
  9S-0128 [2] COUPLING ASSEM.  
14. 3S-8606 [2] SLEEVE  
15. 5P-0179 H HOSE 175.76 cm(69.2 in.)  
16. 2P-7731 [2] CLAMP  
17. 6K-5573 [2] STUD  
18. 1D-4719 [8] NUT  
19. 9K-1251 [6] CLAMP  
20. 9K-1252 [4] CLAMP  
21. 9K-1249 [2] HOSE ASSEM.  
    (Each Includes)
  5P-0179 H HOSE 175.76 cm(69.2 in.)  
22. 3S-8606 [2] SLEEVE  
23. 9S-0128 [2] COUPLING ASSEM.  
24. 0S-1585 [6] BOLT  
25. 3V-5092 C [1] BRACKET ASSEM. (R.H.)  
    (Includes)
28. 9K-0416 [1] STUD  
29. 9K-1246 [2] HOSE ASSEM.  
    (Each Includes)
  5P-0179 H HOSE 165.5 cm(65.16 in.)  
30. 3S-8606 [2] SLEEVE  
31. 9S-0128 [2] COUPLING ASSEM.  
32. 7B-3235 [4] BOLT  
33. 2V-1158 [1] BRACKET (R.H.)  
  2V-1157 [1] BRACKET (L.H.)  
34. 2P-1283 [6] UNION  
35. 9S-8896 C [6] CAP  
  C   INDICATES CHANGE
  H   ORDER BY THE CENTIMETRE
 

Information:

Caterpillar Parts SIS Catalog 518 :

GRAPPLE CONTROL VALVE GROUP
8J-1873 GRAPPLE CONTROL VALVE GROUP
HYDRAULIC HAND CONTROL GROUP
9K-0318 HYDRAULIC HAND CONTROL GROUP
HYDRAULIC HAND CONTROL GROUP
9K-0318 HYDRAULIC HAND CONTROL GROUP
HYDRAULIC HAND CONTROL GROUP
9K-0317 HYDRAULIC HAND CONTROL GROUP
HYDRAULIC HAND CONTROL GROUP
9K-0317 HYDRAULIC HAND CONTROL GROUP
FILTER & TANK GP-HYDRAULIC
1U-1619 FILTER & TANK GP-HYDRAULIC
FILTER & TANK GP-HYDRAULIC
1U-1619 FILTER & TANK GP-HYDRAULIC
HYDRAULIC FILTER AND TANK GROUP
9J-9312 HYDRAULIC FILTER AND TANK GROUP
VALVE GP-CONTROL
8J-7242 VALVE GP-CONTROL
VALVE GP-CONTROL
8J-7243 VALVE GP-CONTROL
VALVE GP-CONTROL
8J-7243 VALVE GP-CONTROL
VALVE GP-RELIEF
3G-4386 VALVE GP-RELIEF
VALVE GP-CONTROL
8J-7244 VALVE GP-CONTROL
CONTROL VALVE GROUP
8J-7255 CONTROL VALVE GROUP
REAR HYDRAULIC LINES GROUP
9K-0915 REAR HYDRAULIC LINES GROUP
REAR HYDRAULIC LINES GROUP
9K-0915 REAR HYDRAULIC LINES GROUP

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