Pilot Valve (Loader) - Disassemble
Disassembly Procedure
Start By:
- Remove the pilot valve (loader) from the cab. Refer to Disassembly and Assembly, "Pilot Valve (Loader) - Remove" in this manual.
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| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair 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 Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
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| NOTICE |
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Keep all parts clean from contaminants. Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components. To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly. Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination. |
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes.
- Remove six hydraulic lines (1) from the pilot valve.
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| Illustration 1 | g00756741 |
- Retract boot (2) in order to remove joystick (3) .
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| Illustration 2 | g00756743 |
- Loosen nut (4) and remove boot (2) and joystick (3) .
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| Illustration 3 | g00757063 |
- Remove two tie straps (5) in order to remove boot (6) .
- Remove boot (6) .
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| Illustration 4 | g00757066 |
- Remove nut (7) .
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| Illustration 5 | g00757069 |
- Remove two nuts and washers (8). Remove plate (9) .
- Remove two receptacle assemblies (10) from the plate.
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| Illustration 6 | g00757074 |
- Remove three washers (11) .
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| Illustration 7 | g00757075 |
- Remove two joints (12) .
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| Illustration 8 | g00757076 |
- Remove two plungers (13) .
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| Illustration 9 | g00757078 |
- Remove retainer (14) and spacer (15) from the joint assembly.
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| Illustration 10 | g00757086 |
- Repeat Step 12 for the other joint assembly.
- Remove joint (16) .
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| Illustration 11 | g00757089 |
- Separate valve body (17) from bracket (18) .
- Remove four bolts (19) from bracket (18) .
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| Illustration 12 | g00757094 |
- Remove plate (20) and plate (21) .
- Separate plate (20) and plate (21) .
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| Illustration 13 | g00757100 |
- Remove grommet (22) from plate (21) .
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| Illustration 14 | g00757103 |
- Remove two coils (23) from plate (20) .
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| Illustration 15 | g00757107 |
- Remove two grommets (24) from plate (20) .
- Remove two guides (25) from plate (20) .
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| Illustration 16 | g00757125 |
- Remove two grommets (26) from plate (20) .
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| Illustration 17 | g00757126 |
- Remove four plunger assemblies (27) from valve body (17) .
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| Illustration 18 | g00757128 |
- Remove plunger (28) and O-ring (29) from guide (30) .
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| Illustration 19 | g00757129 |
- Repeat Step 25 for the remaining plunger assemblies.
- Remove two set screws (31) from valve body (17) .
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| Illustration 20 | g00759930 |
- Remove three set screws (32) from valve body (17) .
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| Illustration 21 | g00759933 |
- Remove two regulators (36), two cylinders (35), two springs (34), and two springs (33) .
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| Illustration 22 | g00757133 |
Ports with magnetic coils | |
- Remove two regulators (38) and two springs (37) .
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| Illustration 23 | g00757134 |
- Remove six fittings (39) from valve body (17) .
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