Caterpillar Cat 420E BACKHOE LOADER (Prefix KMW) Service Repair Manual (KMW00001 and up).pdf

Service Repair Manual
Model
420E BACKHOE LOADER

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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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Tool Part Number Part Description Qty
A 138-7575 Link Bracket 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).
5. Remove bolts (4) and floorplate (5).
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6. Remove louver (6).
7. Remove bolt (7).
8. Remove bolt (9) and duct (8).
9. Repeat Steps 6 through 8 for the other side.
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10. Remove bolts (10) from each side and remove floorplate (11).
11. Remove bolts (12) from each side of bar (13) and remove bar (13).
12. Disconnect seven harness assemblies (14).
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13. Disconnect four hose assemblies (15). Disconnect eight hose assemblies (16). Remove clip
(17).
14. Remove bolts (18) and place block assembly (19) to the side.
15. Disconnect hose assembly (20) from each side of the bank valve for the backhoe.
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16. Disconnect hose assembly (21). Remove cable strap (22).
17. Disconnect hose assemblies (23), (24), and (25). Remove cable strap (26).
18. Remove cable straps (27). Disconnect seventeen hose assemblies (28).
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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.
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.
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) .
2. Remove nuts (11) from bank valve (10) . Remove inlet manifold (1) .
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3. Disassemble inlet manifold (1) .
4. Remove plugs (12) and (14) . Remove O-ring seal (13) and (15) .
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5. Remove the plug and use an allen wrench to remove screen (15a) from inlet manifold (1) .
6. Remove plug (16) . Remove O-ring seal (17) . Remove nut (18) . Remove coil (19) .
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7. Remove spool (20) . Remove cartridge (21) .
8. Remove backup ring (22) , O-ring seal (23) and O-ring (24) from cartridge (21) .
9. Remove right hand stabilizer valve (2) .
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10. Remove O-ring seals (25) from right hand stabilizer valve (2) .
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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12. Remove spool (28) , retainer (29) , spring (30) , and O-ring seal (31) .
13. Remove bolts (33) and cover (32) . Remove check valve (34) .
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14. Remove O-ring seal (35) , spring (35) , and retainer (37) . Remove O-ring seals (38) .
15. Remove boom valve (3) .
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16. Remove O-ring seals (41) . Remove check valve (39) . Remove O-ring seal (40) .
17. Remove bolts (42) . Remove cover (43) .
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420E Backhoe Loader Parallel Lift Center Pivot KMW00001-UP (MACHINE) PO...
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20. Remove O-ring seal (50) , spring (51) , and retainer (52) .
21. Remove plug (53) . Remove fittings (54) .
22. Remove O-ring seal (55) and orifice valve (56) .
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23. Remove plug (57) and relief valve (58) .
24. Remove O-ring seals (59) .
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25. Remove right hand stick valve (4) .
26. Repeat Steps 16 through Step 24 for the disassembly of right hand stick valve (4) .
27. Remove swing valve (5) .
28. Repeat Steps 16 through Step 24 for the disassembly of swing valve (5) .
29. Remove bucket valve (6) .
30. Repeat Steps 16 through Step 24 for the disassembly of bucket valve (6) .
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31. Remove extendable stick valve (7) .
32. Remove O-ring seals (61) . Remove check valves (60) .
33. Remove O-ring seals (63) . Remove relief valve (62) .
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34. Remove O-ring seals (64) and (66) . Remove backup ring (65) .
35. Remove relief valve (67) . Remove bolts (68) and remove cover (69) .
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38. Remove O-ring seal (76) , spring (77) , and retainer (78) .
39. Remove plug (79) .
40. Remove O-ring seal (80) and orifice valve (81) .
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41. Remove stabilizer valve (8) .
42. Repeat Steps 10 through Step 14 for the disassembly of stabilizer valve (8) .
43. Disassemble outlet manifold (9) .
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Caterpillar Cat 420E BACKHOE LOADER (Prefix KMW) Service Repair Manual (KMW00001 and up).pdf

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