Removal Procedure
Start By:
- Remove the mounting bracket. Refer to Service Manual, "Mounting Bracket - Remove and Install".
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At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns. To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed. Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch. |
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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 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. |
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| Illustration 1 | g00715894 |
Typical Example | |
The MP40 is equipped with two gerotor motors and two control manifolds.
- Put identification marks on all hoses for installation purposes. Plug all hoses in order to help prevent fluid loss and contamination of the fluid system.
- Disconnect two hose assemblies (1) from control manifold (2) .
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| Illustration 2 | g00715890 |
- Remove the four bolts and the washers that secure the control manifold to gerotor motor (3). Remove the valve from the work tool.
- Remove two O-ring seals (4) from motor (3) .
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| Illustration 3 | g00707819 |
The motor was removed from the work tool for photographic clarity. | |
- Remove two adapters (5) from control manifold (2). Remove the seal and the O-ring seal from each adapter.
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| Illustration 4 | g00707821 |
Installation Procedure
- Clean all parts and inspect all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.
- Apply 1U-6396 O-Ring Assembly Compound to all of the O-ring seals during installation.
- Install the two seals and the two O-ring seals to two adapters (5). Install the adapters to control manifold (2) .
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| Illustration 5 | g00707821 |
- Install two O-ring seals (4) to motor (3) .
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| Illustration 6 | g00707819 |
- Place the control manifold into position on gerotor motor (3). Install the four bolts and the washers that secure the control manifold to the motor. Tighten the bolts to a torque of 13 ± 3 N·m (115 ± 27 lb in).
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| Illustration 7 | g00715890 |
- Connect two hose assemblies (1) to control manifold (2) .
- The hydraulic system must be purged of air before the work tool can be returned to service. Refer to Service Manual, "Hydraulic System Air - Purge".