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178-4857 VALVE AR 375-A EXCAVATOR


HYDRAULIC SYSTEM
VALVE GP
VALVE GP-LOAD CONTROL
VALVE GP-CHECK
VALVE GP-CHECK & RELIEF
VALVE GP-CONTROL
VALVE GP-DIVERTER
VALVE GP-MANIFOLD & RELIEF
VALVE GP-PILOT

EXCAVATOR 375-A EXCAVATOR 6NK
 375 & 375 L Excavator Custom Attachments 6NK00001-UP (MACHINE) POWERED BY 3406 Engine HEBP0837 375-A 6NK   (1991)

HYDRAULIC SYSTEM

VALVE GP
118-3169 VALVE AR
VALVE AR
178-4857 VALVE AR
 

#HEBP08370080
 

178-4857: VALVE AR

178-4857 VALVE AR
i01283448 HEBP0837
1784857 VALVE AR Parts scheme 1784857 VALVE AR Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 141-8049 [1] TUBE AS  
2. 141-8053 I [1] HOSE AS  
3. 179-6748 I [1] HOSE AS  
4. 087-5764 I [1] HOSE AS  
5. 179-6746 [1] HOSE AS  
6. 4I-1739 I [1] HOSE AS  
7. 179-6744 [1] HOSE AS  
8. 128-8356 [1] TUBE AS  
9. 141-8052 [1] BLOCK  
10. 179-6747 [1] PLATE  
11. 6V-8781 [2] TEE-FACE SEAL  
12. 6V-9850 [1] ELBOW-SWIVEL (11/16-16 THD)  
13. 6V-9005 [1] ELBOW-45 DEGREE  
14. 6V-8636 [1] ADAPTER-SEAL (ORFS 11/16-16; PORT 9/16-18)  
15. 179-6745 [1] MANIFOLD  
16. 141-9162 [1] COVER AS  
17. 5P-8077 [2] FLANGE-HALF  
18. 8C-3206 [2] FLANGE-HALF  
19. 7Y-3731 [1] FLANGE  
20. Y [1] VALVE GP-PILOT  
21. 5K-9090 [3] SEAL-O-RING (23.52MM ID)  
22. 3J-1907 [3] SEAL-O-RING (11.89MM ID)  
23. 1P-3703 [1] SEAL-RECTANGULAR (31.86MM ID)  
24. 6V-8397 [7] SEAL-O-RING (9.27MM ID)  
25. 4J-0520 [1] SEAL-O-RING (32.92MM ID)  
26. 1P-3705 [3] SEAL-RECTANGULAR (44.7MM ID)  
27. 7M-8485 [1] SEAL-O-RING (29.74MM ID)  
28. 4J-0527 [2] SEAL-O-RING (56.74MM ID)  
29. 1P-3704 [1] SEAL-RECTANGULAR (38.2MM ID)  
30. 9X-8257 [4] WASHER (3.50MM THK)  
31. 8T-4121 [6] WASHER-HARD (2.5MM THK)  
32. 8T-4223 [4] WASHER-HARD (3MM THK)  
33. 8T-4196 M [4] BOLT (M10X1.50X35MM)  
34. 8T-4195 M [4] BOLT (M10X1.50X30MM)  
35. 8T-6685 M [2] BOLT (M10X1.50X110MM)  
36. 8T-4183 M [8] BOLT (M12X1.75X40 MM)  
37. 8T-4910 M [4] BOLT (M12X1.75X60MM)  
38. 3E-6911 M [4] BOLT-HEX SOCKET (M12X1.75X180MM)  
39. 8T-4956 M [4] BOLT (M12X1.75X35MM)  
40. 8T-4193 M [4] BOLT (M16X2.0X50MM)  
41. 8T-4133 M [2] NUT (M10X1.50 THD)  
42. 7K-1181 [4] STRAP-CABLE (4IN DIA)  
  I   SEE HOSE FABRICATION GUIDE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#HEBP08370081
 

178-9267: VALVE AR-STICK LOWERING CONT

178-9267 VALVE AR-STICK LOWERING CONT
i01283498 HEBP0837
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  179-9212 Y [1] LINES GP-BOOM  
  122-5667 Y [1] LINES GP-FRONT  
  122-5668 Y [1] LINES GP-RETURN  
  Y   SEPARATE ILLUSTRATION
 

#HEBP08370082
 

113-4366: VALVE GP-CHECK

113-4366 VALVE GP-CHECK
PART OF 113-4081 LINES GP-FRONT
i00475071 HEBP0837
1134366 VALVE GP-CHECK Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 113-4088 [1] BLOCK  
2. 4I-5734 [2] SPACER  
3. 7I-0023 [1] VALVE  
4. 7I-7120 [1] SPRING  
5. 6V-6707 [1] SEAL-O-RING (82.14MM ID)  
6. 4I-0709 [1] STOP  
7. 4I-0710 [1] FLANGE  
8. 6V-3922 [1] SEAL-O-RING (18.72MM ID)  
9. 8T-4132 M [1] NUT (M16X2.0 THD)  
10. 4I-0734 M [1] SETSCREW-SOCKET  
11. 8T-4184 M [4] BOLT (M12X1.75X45MM)  
  M   METRIC PART
 

#HEBP08370083
 

116-3439: VALVE GP-CHECK & RELIEF

116-3439 VALVE GP-CHECK & RELIEF
PART OF 117-1209, 128-5812, 179-9212 LINES GP-BOOM
ALSO AN ATTACHMENT
i00482065 HEBP0837
1163439 VALVE GP-CHECK & RELIEF Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8T-0349 M [4] BOLT  
2. 087-4680 [2] PLUG  
3. 9S-8004 [2] PLUG-O-RING (9/16-18 THD)  
4. 3J-1907 [3] SEAL-O-RING (11.89MM ID)  
5. 9S-9334 [1] PLUG (1 5/16-12 THD)  
6. 7M-8485 [1] SEAL-O-RING (29.74MM ID)  
7. 085-7525 [1] ORIFICE  
8. 4J-5477 [1] SEAL-O-RING (8.61MM ID)  
9. 9S-8007 [1] PLUG-O-RING (3/8-24 THD)  
10. 7J-0204 [2] SEAL-O-RING (7.65MM ID)  
11. 1R-5206 [1] COVER  
12. 087-4660 [1] ORIFICE  
13. 6V-8187 [1] NUT (1/4-28 THD)  
14. 087-4677 [1] BOLT (1/4-28X.75IN)  
15. 087-4679 [1] PLUG  
16. 087-4676 [1] PISTON  
17. 6V-5722 [1] SEAL-O-RING (4.47MM ID)  
18. 087-4675 [1] SPRING  
19. 087-4674 [1] VALVE  
20. 1R-5318 [1] SEAL-O-RING (39.34MM ID)  
21. 087-4673 [1] PIN  
22. 087-4671 [1] PLUG  
23. 085-7512 [1] SPRING  
24. 085-7514 [1] BODY  
25. 085-7513 [1] VALVE  
26. 087-4667 [1] PISTON  
27. 087-4666 M [1] LOCKNUT (M8X1.25 THD)  
28. 9X-8902 M [1] BOLT-SOCKET HEAD  
29. 087-4683 [1] LOCKWASHER  
30. 085-7537 [1] SEAL-O-RING  
31. 087-4662 [1] BALL  
32. 111-9968 [1] VALVE  
33. 085-7530 [1] RING-BACKUP  
34. 085-7538 [1] SEAL-O-RING (31.47MM ID)  
35. 085-7540 [1] SEAL-O-RING (42.52MM ID)  
36. 085-7522 [1] STEM AS  
  M   METRIC PART
 

#HEBP08370084
 

3G-3816: VALVE GP-CONTROL

3G-3816 VALVE GP-CONTROL -RH
PART OF 3G-3818 VALVE GP-PILOT TRAVEL & STEER
AN ATTACHMENT
i00364326 HEBP0837
3G3816 VALVE GP-CONTROL Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1K-4476 [1] SPRING  
2. 2S-4434 [1] SPACER  
3. 8J-4491 [1] BOLT  
4. 8J-4488 [1] COVER  
5. 8J-4492 [1] STEM  
6. 4M-6979 B [5] SHIM (.13MM THK)  
  4M-6980 B [5] SHIM (.25MM THK)  
7. 3G-3814 [1] VALVE GP (RH)  
8. 5J-8004 [1] SPRING  
9. 6V-8546 [1] SEAL-LIP  
10. 0L-1351 C [2] BOLT (3/8-16X.875IN)  
11. 3D-2992 [1] SEAL  
12. 4J-2506 [3] SEAL-O-RING (7.59MM ID)  
13. 9S-8004 [1] PLUG-O-RING (9/16-18 THD)  
  3J-1907 [1] SEAL-O-RING (11.89MM ID)  
14. 8J-4486 [1] STEM  
15. 4B-9880 [1] BALL  
16. 9S-4191 C [2] PLUG-O-RING (9/16-18 THD)  
  3J-1907 C [2] SEAL-O-RING (11.89MM ID)  
17. 6F-4855 [3] SEAL-O-RING (13.94MM ID)  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#HEBP08370085
 

3G-3817: VALVE GP-CONTROL

3G-3817 VALVE GP-CONTROL -LH
PART OF 3G-3818 VALVE GP-PILOT TRAVEL & STEER
AN ATTACHMENT
i00364329 HEBP0837
3G3817 VALVE GP-CONTROL Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1K-4476 [1] SPRING  
2. 2S-4434 [1] SPACER  
3. 8J-4491 [1] BOLT  
4. 4J-2506 C [2] SEAL-O-RING (7.59MM ID)  
5. 8J-4492 [1] STEM  
6. 3G-3815 [1] VALVE GP  
7. 5J-8004 [1] SPRING  
8. 6V-8546 [1] SEAL-LIP  
9. 6F-4855 C [5] SEAL-O-RING (13.94MM ID)  
10. 9S-8004 [1] PLUG-O-RING (9/16-18 THD)  
  3J-1907 [1] SEAL-O-RING (11.89MM ID)  
11. 8J-4488 [1] COVER  
12. 0L-1351 C [2] BOLT (3/8-16X.875IN)  
13. 3D-2992 [1] SEAL  
14. 4M-6979 B [5] SHIM (.13MM THK)  
  4M-6980 B [5] SHIM (.25MM THK)  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#HEBP08370086
 

144-2145: VALVE GP-DIVERTER

144-2145 VALVE GP-DIVERTER
PART OF 113-4081 LINES GP-FRONT
i00555661 HEBP0837
1442145 VALVE GP-DIVERTER Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 144-4218 [1] PIN-LOCK  
2. 119-1353 [1] HANDLE (65MM HIGH/155MM LONG)  
3. 117-8669 [1] ANGLE  
4. 144-6873 [1] PLATE  
5. 117-8929 [1] SPACER (2MM THK)  
6. 7X-2619 M [3] BOLT (M6X1.0X20MM)  
  M   METRIC PART
 

#HEBP08370087
 

114-8580: VALVE GP-MANIFOLD & RELIEF

114-8580 VALVE GP-MANIFOLD & RELIEF
PART OF 113-4081 LINES GP-FRONT
i00488442 HEBP0837
1148580 VALVE GP-MANIFOLD & RELIEF Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 113-4087 [1] BLOCK  
2. 1P-5767 [2] FLANGE-HALF  
3. 5P-0048 [1] COVER  
4. 8T-4184 M [4] BOLT (M12X1.75X45MM)  
5. 8T-4223 [4] WASHER-HARD (3MM THK)  
6. 1P-3704 [1] SEAL-RECTANGULAR (38.2MM ID)  
7. 9S-4181 [1] PLUG-STRAIGHT THREAD (1-5/16-12 THD)  
8. 7M-8485 [3] SEAL-O-RING (29.74MM ID)  
9. 8J-0324 [2] PLUG  
10. 5F-5835 [2] SPRING  
11. 6E-1547 Y [2] VALVE GP-RELIEF  
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#HEBP08370088
 

8J-4356: VALVE GP-PILOT

8J-4356 VALVE GP-PILOT
PART OF 3G-3818 VALVE GP-PILOT TRAVEL & STEER
AN ATTACHMENT
i00424876 HEBP0837
8J4356 VALVE GP-PILOT Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6V-4345 [1] BOLT-12 POINT HEAD  
2. 1A-4790 [1] WASHER (1.67CM THK)  
3. 5B-2113 [1] BEARING-NEEDLE  
4. 8J-4493 [1] SHAFT-GOVERNOR CONTROL  
5. 1U-3931 [1] LEVER  
  1B-8702 [2] KEY-WOODRUFF  
6. 8J-4484 [4] RETAINER  
7. 8J-4482 [2] RETAINER  
8. 8J-4481 [2] SPRING (OUTER)  
9. 4D-3107 [2] SEAL-O-RING (37.77MM ID)  
10. 0L-1351 C [14] BOLT (3/8-16X.875IN)  
11. 8J-4494 [1] COVER  
12. 8J-4480 [2] SPRING (INNER)  
13. 4D-0514 C [2] PLUG-PIPE (1/16-27 NPTF)  
14. 3G-5967 C [1] VALVE GP  
15. 7J-7673 [1] SEAL-LIP  
16. 1F-4503 [1] BEARING-NEEDLE  
17. 8J-4490 [1] GASKET  
18. 8J-4489 [1] COVER  
19. 6H-0190 [1] WASHER (1.98CM THK)  
20. 5P-3108 C [1] SEAL-O-RING (20.30MM ID)  
  C   CHANGE FROM PREVIOUS TYPE
 

#HEBP08370089
 

121-1814: VALVE GP-PILOT

121-1814 VALVE GP-PILOT
i00480144 HEBP0837
1211814 VALVE GP-PILOT Parts scheme
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Parts for your 375-A EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 099-6132 [1] HOUSING  
2. 087-5707 [1] COVER  
3. 087-4448 M [2] BOLT-SOCKET HEAD  
4. 8T-4133 M [2] NUT (M10X1.50 THD)  
5. 087-4710 M [2] SETSCREW  
6. 087-5708 [1] PEDAL  
7. 095-1260 M [1] SETSCREW-SOCKET  
8. 087-5709 [1] BELLOWS  
9. 087-4704 [2] ROD  
10. 099-6135 [2] SCRAPER  
11. 094-0876 [2] SEAL  
12. 087-4703 [2] PLUG  
13. 095-1586 [2] SEAL-O-RING (19.80MM ID)  
14. 099-6136 [4] WASHER  
15. 099-6140 [2] SEAT  
16. 099-6139 [2] SPOOL  
17. 099-6141 [2] WASHER  
18. 099-6137 [2] WASHER  
19. 099-6142 [2] SPRING  
20. 121-1815 [2] SPRING  
21. 099-6144 [2] BUSHING-TERMINAL  
22. 099-6145 [1] CAMSHAFT  
  M   METRIC PART
 

Information:

Special Instruction
Installation of 136-1898 Valve Group into 375 and 5080 Excavators{5051, 5051, 5057, 5264}
Installation of 136-1898 Valve Group into 375 and 5080 Excavators{5051, 5051, 5057, 5264}
Technical Information Bulletin
Operation Of Boom Up And Stick In With A Full Valve Shift May Experience A Cycling Surge
Operation Of Boom Up And Stick In With A Full Valve Shift May Experience A Cycling Surge
Specifications
Swing Control Valve
375 AND 375L EXCAVATORS HYDRAULIC SYSTEM
Valve Group<BR> 1148580
375, 375L EXCAVATORS AND 5080 FRONT SHOVEL ATTACHMENTS
Check Valve Group<BR> 1134366
375, 375L EXCAVATORS AND 5080 FRONT SHOVEL ATTACHMENTS
Pilot Valve Group<BR> 1211814
375, 375L EXCAVATORS AND 5080 FRONT SHOVEL ATTACHMENTS
Relief Valve Group<BR> 9T8316
375, 375L EXCAVATORS AND 5080 FRONT SHOVEL ATTACHMENTS
Disassembly and Assembly
Bypass Check Valve
375 EXCAVATOR MACHINE SYSTEMS
Service Magazine
New Adjusting Screw And Special Locknut For Main Control Valve Groups Use O-Rings To Improve Seal Between Adjusting Screw And Locknut {5051}
1997/03/24
New Spring Housing For Swing Control Valve Group Assures Correct Position For Bleeder Screw {5051,5480}
1997/04/14
Orifice Plug Reduces Boom Up Surge {5051}
1997/07/21
Special Instructions SEHS9985, SEHS9986 Are Available For Installing 136-1898 Valve Group {5051,5057,5264}
1997/09/15
New Split Ring For O-Ring Seal On Plugs In Implement Control Valve Improves Reliability Of Seal In High Presssure Passages {5051}
1998/06/22
Jerky Implement Control Can Be Eliminated By Adding Orifice Plugs {5051}
1999/08/02

Caterpillar Parts SIS Catalog 375-A :

118-3169 VALVE AR
4Q-4431 VALVE & LINES AR
LINES GP-TRAVEL MOTOR
164-9199 LINES GP-TRAVEL MOTOR
LINES GP-STICK
177-4940 LINES GP-STICK
LINES GP-STICK
170-5000 LINES GP-STICK
LINES GP-STICK
140-7888 LINES GP-STICK
LINES GP-STICK
140-7887 LINES GP-STICK
LINES GP-STICK
128-2704 LINES GP-STICK
178-9267 VALVE AR-STICK LOWERING CONT
VALVE GP-CHECK
113-4366 VALVE GP-CHECK
VALVE GP-CHECK & RELIEF
116-3439 VALVE GP-CHECK & RELIEF
VALVE GP-CONTROL
3G-3816 VALVE GP-CONTROL
VALVE GP-CONTROL
3G-3817 VALVE GP-CONTROL
VALVE GP-DIVERTER
144-2145 VALVE GP-DIVERTER
VALVE GP-MANIFOLD & RELIEF
114-8580 VALVE GP-MANIFOLD & RELIEF
VALVE GP-PILOT
8J-4356 VALVE GP-PILOT
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The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
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.