315C Excavator Machine Systems Shuttle Valve - Install - Straight Travel Caterpillar

Installation Procedure

Note: Cleanliness is an important factor. Before installation, ensure that all parts and mating surfaces are clean. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

Note: Check the O-ring seals for wear and for damage. Replace the O-ring seals, if necessary.

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Illustration 1	g00636154
Typical example

1. Install shuttle valve (4) beneath the cab floor. Install bolts (5) and the washers in the shuttle valve.

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Illustration 2	g01021556

2. Connect all hose assemblies (3) to shuttle valve (4) .

3. Fill the hydraulic system. Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level - Check" and Operation and Maintenance Manual, "Capacities (Refill)".

4. Start the machine. Check for any leaks. Repair any leaks.

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Illustration 3	g00636152
Typical example

5. Install plate assembly (2) beneath the cab. Install bolts (1) and the washers in the plate assembly beneath the cab.

6. Install high efficiency filters in place of the pilot filter, the filter for the case drain, and the return filter.

   Note: High efficiency filters should not be run for more than 250 hours before you change back to the standard filters.

7. Obtain a hydraulic oil sample from the main S·O·S port. Refer to Operation and Maintenance Manual, "Sampling Interval and Location of Sampling Valve" for the location of the sampling valve.

8. If the S·O·S sample exceeds ISO 18/15, flush the hydraulic system. Refer to Contamination Control Guideline, SEBF8447.