Disassembly Procedure
Start By:
- Remove the implement pump.
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Table 1
| Required Tools |
| Tool |
Part Number |
Description |
Qty |
| A |
1P-1858 |
Pliers |
1 |
| B |
1P-0074 |
Slide Hammer Puller |
1 |
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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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- Be sure that the outside of the implement pump is clean prior to disassembly.
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| Illustration 1 | g00619940 |
- Remove O-ring seal (1) from pump (2) .
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| Illustration 2 | g00619942 |
- Remove bolts (4) and compensator (3) from the pump.
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| Illustration 3 | g00619947 |
Typical example |
- Remove plug (6), plug (8), spool (5), and spool (7) from compensator (3) .
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| Illustration 4 | g00619949 |
Typical example |
- Remove locknuts (9) and (10) .
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| Illustration 5 | g00619950 |
Typical example |
- Remove margin plug (15), guide (14), spring stop pin (13), spring (12), and guide (11) from compensator (3) .
- Remove screw (16) from margin plug (15) .
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| Illustration 6 | g00619952 |
Typical example |
- Remove compensator plug (21), guide (20), spring (19), and guide (18) from the compensator.
- Remove screw (22) from compensator plug (21) .
- Remove plug (17) and the O-ring seal from the compensator.
- Remove O-ring seals (23) from the compensator.
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| Illustration 7 | g00619953 |
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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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Note: A spring is held in compression by the head. The pump head can be pushed away from the pump case very rapidly. The spring tension must be released before the last bolt is removed from the head. In order to gradually release the spring tension, be sure that the head moves away from the pump case as the bolts are loosened. The bolts in the head are long enough to release all of the tension in the spring before the bolts are removed.
- Remove bolts (25) and head (24) from pump (2) .
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| Illustration 8 | g00619954 |
- Remove cylinder (26) from head (24). Also remove the spacer under cylinder (26) .
- Remove cylinder (27) and spring (28) .
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| Illustration 9 | g00619956 |
- Note the location of plate (29) and remove the plate.
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| Illustration 10 | g00619958 |
- Remove pistons (30) and (31). Remove the O-ring seal from each of the pistons.
- Remove bearing cup (32) .
- If necessary, remove pin (33) .
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| Illustration 11 | g00619959 |
- Remove gasket (34) from pump (2) .
- Remove bolts (35), cover (36), and the O-ring seal.
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| Illustration 12 | g00619962 |
- Remove bearing cone (37) from the shaft.
- Remove plug (38) and the O-ring seal.
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| Illustration 13 | g00619963 |
- Remove spacer (39) from the shaft.
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| Illustration 14 | g00619964 |
- Remove barrel assembly (40) from pump (2) .
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| Illustration 15 | g00619965 |
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| Illustration 16 | g00619966 |
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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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- Use a press to compress spring (44). Use Tool (A) to remove snap ring (43) from the groove in barrel (40) .
- Slowly release the compression on spring (44) .
- Remove guide (42), spring (44), and guide (41) from barrel (40) .
Note: Guides (41) and (42) are a different size. Mark the guides for assembly purposes.
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| Illustration 17 | g00619968 |
- Remove shaft (45) from pump (2) .
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| Illustration 18 | g00620030 |
- Tilt swashplate (46), and pistons (47). Remove the components as an assembly from pump (2) .
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| Illustration 19 | g00620031 |
- Remove bolts (49). Remove plates (48) and (50) .
- If necessary, remove stops (52) from swashplate (51) .
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| Illustration 20 | g00620032 |
- Remove pistons (47) from plate (53) .
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| Illustration 21 | g00620033 |
- Remove bearing cone (54) .
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| Illustration 22 | g00620036 |
- Remove bearing cup (56) .
- Remove bolts (58) and swashplate bearings (55) and (57) .
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| Illustration 23 | g00620037 |
- Use Tool (B) and remove two lip seals (59) from the housing. Note the direction of the lip seals for assembly.
- Use Tooling (A) and remove two snap rings (60) .
