- Load Haul Dump:
- R1700G (S/N: 8XZ1-UP)
The existing information in this module has been updated. Add the following supplemental information to the module that is referenced. Refer to "Disassembly Procedure"
Disassembly Procedure
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly procedures on a clean work surface. Keep components covered and protected at all times.
Note: Put identification marks on all of the components of the main control valve as the components are being removed. All of the components must be reinstalled to original locations and to the original orientation.
- Put identification marks on relief valves (1) and (2) for assembly purposes. Remove relief valves (1) and (2) from valve body (3) .
Note: Relief valve (1) is for the rod end of the tilt cylinder. Relief valve (2) is for the head end of the tilt cylinder.
Note: Relief valve (1) is different from relief valve (2). DO NOT mix the parts of the two relief valves.
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| Illustration 1 | g01073611 |
- Disassemble O-ring seal (4), O-ring seal (5), locknut (7), retainer (8), O-ring seal (6), spring (12), plate (11), valve (10), and valve body (9) from relief valve (1) .
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| Illustration 2 | g01101183 |
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Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. |
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- Disassemble O-ring seal (4), O-ring seal (5), locknut (7), retainer (8), O-ring seal (6), washer (13), spring (12), plate (11), valve (10), and valve body (9) from relief valve (2) .
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| Illustration 3 | g01101184 |
- Remove main relief valve (14) from the main control valve
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| Illustration 4 | g01073614 |
- Disassemble main relief valve (14). Remove O-ring seals (15) and (16) from valve body (18) .
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| Illustration 5 | g01073615 |
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Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. |
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- Remove cap (21) from valve body (18). Remove O-ring seal (17) .
- Remove spring (20) and valve (19) from valve body (18) .
- Remove three load check valves (23). Each load check valve contains a plug (23), O-ring (24), spring (25) and valve (26) .
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| Illustration 6 | g01073616 |
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| Illustration 7 | g01073954 |
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Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. |
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- Remove make-up valve (27). Remove plug (31), spring (29) and valve (28). Remove O-ring seal (30) .
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| Illustration 8 | g01073947 |
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| Illustration 9 | g01073948 |
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Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. |
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- Remove fitting (32) from plug (31) .
- Remove four bolts (34). Remove housings (33). Remove the O-ring seals from housings (33) .
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| Illustration 10 | g01074366 |
- Remove four bolts (35). Remove housings (36). Remove the O-ring seals from housings (36) .
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| Illustration 11 | g01074373 |
- Remove tilt valve spool assembly (37) .
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| Illustration 12 | g01074368 |
- Remove lift valve spool assembly (38) .
- Disassemble bolt (47), the washer, shim pack (46), retainer (45), shim pack (44), spring (43), spring (42), retainer (41), shims (40), and spool (39) from the tilt valve spool assembly (37) .
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| Illustration 13 | g01101185 |
Note: The lift valve spool is different from the tilt valve spool. DO NOT mix the parts of the two valve spools.
Note: DO NOT mix the shims. The shim packs must be clearly identified for assembly purposes.
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Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. |
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- Disassemble bolt (47), the washer, shim pack (46), retainer (45), shim pack (44), spring (43), spring (42), retainer (41), shims (40), and spool (39) from the lift valve spool assembly (38) .