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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| 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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
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Personal injury can result from hot oil spray. Make sure all attachments have been lowered, oil is cool and the pressure has been released from the hydraulic system before removing any components or lines. Be sure there is no pressure in the tubing before it is disconnected from the fitting. Do not allow hot oil or components to contact skin. |
- Disconnect harness assembly (3).
- Remove two bolts (2) and remove modulating valve (1), the orifice plate, and the gasket.
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Illustration 2 g06073109 - Remove seal (4) from modulating valve (1).
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Illustration 3 g06073110 - Remove nut (6) and coil assembly (7).
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Illustration 4 g06073952 Show/hide tablePersonal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
- Remove cartridge assembly (7) from valve body (8).
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Illustration 5 g06073958 - Remove O-ring seals (9) from cartridge assembly (7).
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Illustration 6 g06073964 - Remove spool assembly (10) and spring (11) from valve body (8).
- Remove fitting (12).
- Repeat this procedure for the remaining modulating valves.
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| Illustration 1 | g06073106 |
- Install modulating valve (1) in the reverse order of removal.
- Tighten fitting (12) to a torque of
14 ± 4 N·m (124 ± 35 lb in) . - Tighten nut (5) to a torque of
13.0 ± 1.5 N·m (115.06 ± 13.28 lb in) .
- Tighten fitting (12) to a torque of