Service Repair Manual
Models
420D BACKHOE LOADER
420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
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Shutdown SIS Previous Screen Product: BACKHOE LOADER Model: 420D BACKHOE LOADER FDP Configuration: 420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine
Disassembly and Assembly 416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems Media Number -RENR3585-11
Publication Date -01/09/2009
Date Updated -28/09/2009
i01406296
Bank Valve (Loader) - Assemble SMCS - 5051-016; 5124-016
Assembly Procedure Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. All disassembly and all assembly procedures must be performed on a clean work surface and in a clean hydraulic area. Keep cleaned parts covered and protected at all times. Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure. Note: Apply a light film of hydraulic oil to all components before assembly.
Illustration 1
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1. Install O-ring (144) onto plug (143) .
Illustration 2
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2. Install plug (143). Tighten the plug to the following torque: 27 ± 3 N·m (20 ± 2 lb ft)
Illustration 3
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3. Install the following items onto valve assembly (139) : O-ring (140), seal (141) and O-ring (142) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
Illustration 4
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4. Install valve assembly (139). Tighten the valve to the following torque: 70 ± 7 N·m (52 ± 5 lb ft)
Illustration 5
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5. Install O-ring (138) onto plug (135) .
Illustration 6
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
6. Install spring (136) and install spool (137) .
Illustration 7
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7. Install plug (135). Tighten the plug to the following torque: 70 ± 7 N·m (52 ± 5 lb ft)
Illustration 8
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8. Install the following four O-rings: ◦ One O-ring (132) ◦ One O-ring (133) ◦ Two O-rings (134)
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
Illustration 9
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9. Install three studs (7) and then install shims (131) onto the studs.
Illustration 10
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10. Install the following items onto the seat (126) : check ball (127), O-ring (128), seal (129) and O-ring (130) .
Illustration 11
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
11. Install seat (126). Tighten the seat to the following torque: 14 ± 2 N·m (10 ± 1 lb ft)
Illustration 12
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12. Install spool assembly (120) . 13. Install the following items in order to secure the spool assembly into the valve body: retainer (121), spring (122), coupling (123), retainer (124) and nut (125) . Tighten the nut to the following torque: 10 ± 1.5 N·m (7 ± 1 lb ft)
Illustration 13
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14. Install spring (118) and install spool valve (119) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
Illustration 14
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15. Install O-ring (117) onto plug (116) .
Illustration 15
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16. Install plug (116). Tighten the plug to the following torque: 70 ± 7 N·m (52 ± 5 lb ft)
Illustration 16
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17. Install the following items onto valve (109) : O-ring (110), seal (111), O-ring (112), O-ring (113), O-ring (114) and seal (115) .
Illustration 17
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18. Install valve assembly (109). Tighten the valve assembly to the following torque: 14 ± 2 N·m (10 ± 1 lb ft)
Illustration 18
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19. Position O-ring (108) in place on inner cover housing (99) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(S...
Illustration 19
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20. Place inner cover housing (99) into position. Install allen head screw (107) in order to secure the inner cover housing in place. Tighten the allen head screws to the following torque: 8 ± 1.5 N·m (71 ± 13 lb in)
Illustration 20
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21. Install the following items in outer cover (98) : O-ring (105), cap (104), spring (103), plunger (102), spacer (101) and O-ring (100) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 21
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22. Position outer cover (98) in place. Then install allen head screws (96) in order to secure outer cover (98) in place on inner cover housing (99) . Tighten the allen head screws to the following torque: 8 ± 1.5 N·m (71 ± 13 lb in)
Illustration 22
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23. Install O-ring (106) onto plug (97) . 24. Install plug (97) into the outer cover.
Illustration 23
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25. Install four O-rings in position on lift valve group (95) : ◦ Two O-rings (92) ◦ One O-ring (93) ◦ One O-ring (94)
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
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26. Carefully slide lift valve group (95) onto the studs. Then install shims (91) onto studs (7) .
Illustration 24
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27. Install the following items onto seat (86) : check ball (87), O-ring (88), seal (89) and O-ring (90) .
Illustration 25
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28. Install seat (86). Tighten the seat to the following torque: 14 ± 2 N·m (10 ± 1 lb ft)
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 26
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29. Install spool assembly (80) . 30. Install the following items in order to secure spool assembly (80) into the valve body: retainer (81), spring (82), coupling (83), retainer (84) and nut (85) . Tighten the nut to the following torque: 10 ± 1.5 N·m (7 ± 1 lb ft)
Illustration 27
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31. Install the following items onto valve groups (75) and (76) : O-ring (77), seal (78) and Oring (79) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 28
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32. Install valve group (75) and install valve group (76). Tighten the valve groups to the following torque: 35 to 45 N¡m (26 to 33 lb ft)
Illustration 29
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33. Install spring (73) and install spool valve (74) .
Illustration 30
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
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34. Install O-ring (71) onto plug (70) .
Illustration 31
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35. Install plug (71). Tighten the plug to the following torque: 70 ± 7 N·m (52 ± 5 lb ft)
Illustration 32
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36. Install the following items onto valve (64) : O-ring (65), seal (66), O-ring (67), O-ring (68), O-ring (69) and seal (70) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 33
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37. Install valve assembly (64). Tighten the valve assembly to the following torque: 14 ± 2 N·m (10 ± 1 lb ft)
Illustration 34
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38. Position O-ring (63) in place on inner cover housing (54) .
Illustration 35
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
39. Position inner cover housing (54) in place. Then install allen head screw (62) in order to secure the inner cover housing in place. Tighten the allen head screws to the following torque: 8 ± 1.5 N·m (71 ± 13 lb in)
Illustration 36
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40. Install the following items into the outer cover (53) : O-ring (60), cap (59), spring (58), plunger (57), spacer (56) and O-ring (55) . 41. Position outer cover (53) in place on inner cover housing (54). Then install allen head screws (51) in order to secure the outer cover (53) in place. Tighten the allen head screws to the following torque: 8 ± 1.5 N·m (71 ± 13 lb in)
Illustration 37
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42. Install O-ring (61) onto plug (52) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 38
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43. Install plug (52) .
Illustration 39
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44. Position O-ring (49) in place on cover (48) .
Illustration 40
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45. Place cover (49) in the proper position. Then install allen head screws (48) in order to secure cover (49) in position on the tilt valve group. Tighten the allen head screws to the following torque: 8 ± 1.5 N·m (71 ± 13 lb in)
Illustration 41
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46. Install four O-rings onto the tilt valve group: ◦ Two O-rings (44) ◦ One O-ring (45) ◦ One O-ring (46) 47. Carefully slide tilt valve group (47) onto the studs. Then install three shims (43) onto studs (7) .
Illustration 42
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48. Install the following items onto the seat (38) : check ball (39), O-ring (40), seal (41) and Oring (42) .
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420D Backhoe Loader FDP18400-UP (MACHINE) POWERED BY 3054C Engine(...
Illustration 43
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49. Install seat (38). Tighten the seat to the following torque: 14 ± 2 N·m (10 ± 1 lb ft)
Illustration 44
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50. Install spring (36) and then install spool (37) .
Illustration 45
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