Service Repair Manual
Model
420E BACKHOE LOADER
420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420E BACKHOE LOADER KMW Configuration: 420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWERED BY 3054C Engine
Disassembly and Assembly 414E, 416E, 420E, 422E, 428E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Machine Systems Media Number -RENR6485-08
Publication Date -01/01/2013
Date Updated -24/01/2013
i02222904
Bank Valve (Backhoe) - Remove SMCS - 5051-011; 5476-011 S/N - BXE1-2199 S/N - CBD1-UP S/N - DDT1-UP S/N - EAT1-UP S/N - FSH1-899 S/N - GKZ1-599 S/N - HBE1-1599 S/N - HLS1-UP S/N - KMW1-UP S/N - LBE1-599 S/N - MFG1-6000 S/N - SHA1-UP S/N - SNL1-2199
Removal Procedure Table 1 Required Tools
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Tool
Part Number
A
138-7575
Part Description Link Bracket
Qty 2
1. Lower all implements to the ground. 2. Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release". 3. Drain the hydraulic oil into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Illustration 1
g01119509
4. Remove bolts (3) and plate (2). Repeat for the other side. Remove floor mat (1).
Illustration 2
g01121317
5. Remove bolts (4) and floorplate (5).
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 3
g01121182
6. Remove louver (6).
Illustration 4
g01121187
7. Remove bolt (7).
Illustration 5
g01121221
8. Remove bolt (9) and duct (8). 9. Repeat Steps 6 through 8 for the other side.
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 6
g01121318
10. Remove bolts (10) from each side and remove floorplate (11).
Illustration 7
g01121322
11. Remove bolts (12) from each side of bar (13) and remove bar (13).
Illustration 8
g01121327
12. Disconnect seven harness assemblies (14).
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 9
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g01121334
13. Disconnect four hose assemblies (15). Disconnect eight hose assemblies (16). Remove clip (17).
Illustration 10
g01121339
14. Remove bolts (18) and place block assembly (19) to the side.
Illustration 11
g01121356
15. Disconnect hose assembly (20) from each side of the bank valve for the backhoe.
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Illustration 12
g01121371
16. Disconnect hose assembly (21). Remove cable strap (22).
Illustration 13
g01121378
17. Disconnect hose assemblies (23), (24), and (25). Remove cable strap (26).
Illustration 14
g01121391
18. Remove cable straps (27). Disconnect seventeen hose assemblies (28).
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 15
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g01121411
19. Attach Tooling (A) and a suitable lifting device to bank valve (30) for the backhoe. The weight of bank valve (30) for the backhoe is approximately 80 kg (175 lb). Remove bolts (29) and remove bank valve (30) for the backhoe. Copyright 1993 - 2019 Caterpillar Inc.
Wed Sep 11 21:15:57 UTC+0800 2019
All Rights Reserved. Private Network For SIS Licensees.
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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420E BACKHOE LOADER KMW Configuration: 420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWERED BY 3054C Engine
Disassembly and Assembly 414E, 416E, 420E, 422E, 428E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Machine Systems Media Number -RENR6485-08
Publication Date -01/01/2013
Date Updated -24/01/2013
i03895571
Bank Valve (Backhoe) - Disassemble SMCS - 5051-015; 5476-015 S/N - BXE1-UP S/N - DDT1-UP S/N - EAT1-UP S/N - FSH1-UP S/N - GKZ1-UP S/N - HLS1-UP S/N - KMW1-UP S/N - LBE1-UP S/N - MFG1-6000
Disassembly Procedure Start By: A. Remove the bank valve (backhoe). Refer to Disassembly and Assembly, "Bank Valve (Backhoe) - Remove".
NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair
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of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.
Illustration 1
g01401051
1. The valves within the bank valve are positioned in the following manner: Inlet manifold (1) , right hand stabilizer valve (2) , boom valve (3) , right hand stick valve (4) , swing valve (5) , bucket valve (6) , extendable stick valve (7) , left hand stabilizer valve (8) , and outlet manifold (9) .
Illustration 2
g01401145
2. Remove nuts (11) from bank valve (10) . Remove inlet manifold (1) .
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Illustration 3
g01403300
3. Disassemble inlet manifold (1) .
Illustration 4
g01401147
4. Remove plugs (12) and (14) . Remove O-ring seal (13) and (15) .
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Illustration 5
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g02139374
5. Remove the plug and use an allen wrench to remove screen (15a) from inlet manifold (1) .
Illustration 6
g01401342
6. Remove plug (16) . Remove O-ring seal (17) . Remove nut (18) . Remove coil (19) .
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Illustration 7
g01401363
7. Remove spool (20) . Remove cartridge (21) .
Illustration 8
g01401393
8. Remove backup ring (22) , O-ring seal (23) and O-ring (24) from cartridge (21) .
Illustration 9
g01401420
9. Remove right hand stabilizer valve (2) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 10
g01401440
10. Remove O-ring seals (25) from right hand stabilizer valve (2) .
Illustration 11
g01401450
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
11. Remove bolts (26) and cover (27) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 12
g01401468
12. Remove spool (28) , retainer (29) , spring (30) , and O-ring seal (31) .
Illustration 13
g01401486
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
13. Remove bolts (33) and cover (32) . Remove check valve (34) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 14
g01401533
Illustration 15
g01401537
14. Remove O-ring seal (35) , spring (35) , and retainer (37) . Remove O-ring seals (38) .
Illustration 16
g01401642
15. Remove boom valve (3) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) POWE...
Illustration 17
g01401656
16. Remove O-ring seals (41) . Remove check valve (39) . Remove O-ring seal (40) .
Illustration 18
g01401667
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
17. Remove bolts (42) . Remove cover (43) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
Illustration 19
g01401683
18. Remove spool (44) , retainer (45) , spring (46) , and O-ring seal (47) .
Illustration 20
g01401691
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
19. Remove bolts (48) . Remove cover (49) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
Illustration 21
g01401712
20. Remove O-ring seal (50) , spring (51) , and retainer (52) .
Illustration 22
g01401777
21. Remove plug (53) . Remove fittings (54) .
Illustration 23
g01401792
22. Remove O-ring seal (55) and orifice valve (56) .
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Illustration 24
g01401840
23. Remove plug (57) and relief valve (58) .
Illustration 25
g01401852
24. Remove O-ring seals (59) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
Illustration 26
g01401859
25. Remove right hand stick valve (4) . 26. Repeat Steps 16 through Step 24 for the disassembly of right hand stick valve (4) .
Illustration 27
g01401876
27. Remove swing valve (5) . 28. Repeat Steps 16 through Step 24 for the disassembly of swing valve (5) .
Illustration 28
g01401886
29. Remove bucket valve (6) . 30. Repeat Steps 16 through Step 24 for the disassembly of bucket valve (6) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
Illustration 29
g01401891
31. Remove extendable stick valve (7) .
Illustration 30
g01401899
32. Remove O-ring seals (61) . Remove check valves (60) .
Illustration 31
g01401909
33. Remove O-ring seals (63) . Remove relief valve (62) .
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Illustration 32
g01402072
34. Remove O-ring seals (64) and (66) . Remove backup ring (65) .
Illustration 33
g01402093
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
35. Remove relief valve (67) . Remove bolts (68) and remove cover (69) .
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Illustration 34
g01402110
36. Remove spool (70) , retainer (71) , spring (72) , and O-ring seal (73) .
Illustration 35
g01402115
Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.
37. Remove bolts (74) . Remove cover (75) .
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Illustration 36
g01402129
38. Remove O-ring seal (76) , spring (77) , and retainer (78) .
Illustration 37
g01402133
39. Remove plug (79) .
Illustration 38
g01402154
40. Remove O-ring seal (80) and orifice valve (81) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
Illustration 39
g01402544
41. Remove stabilizer valve (8) . 42. Repeat Steps 10 through Step 14 for the disassembly of stabilizer valve (8) .
Illustration 40
g01402845
43. Disassemble outlet manifold (9) .
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