315B Excavator Machine Systems Caterpillar

Assembly Procedure

1. Make sure that all of the parts of the pilot valve are thoroughly clean and free of dirt prior to assembly.

2. Replace all O-ring seals with new O-ring seals. Put clean hydraulic oil on all of the internal parts of the valve prior to assembly.

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Illustration 1	g00371854

3. Install spool (13), washers (12) and (17), springs (11) and (10), seat (9), washers (8) and (15), and rod (7) in valve housing (14) .

4. Install O-ring seal (30), seal (21) and scraper (20) in plug (29). Install the plug in the valve housing.

5. Follow Step 3 and Step 4 in order to install the other valve assembly components.

6. Put cover 26 in position on the valve housing. Install two socket head bolts (25) .

7. Install bushings (19) and (27) in cover (26). Put pedal (24) in position on cover (26). Install shaft (28) .

8. Install screws (16) and (23) in pedal (24). Install bellows (22) over the pedal.

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Illustration 2	g00371853

9. Reinstall lever assembly (2) on the pedal. Install bolts (6) and the washers that hold the unit together.

10. Put pedal assembly (5) in position on the pilot valve. Install bolts (4) and the washers.

11. Reinstall rubber cover (3) on pedal assembly (5). If knob (1) was removed, reinstall the knob on lever assembly (2) .

End By: Install the pilot valve. Refer to Disassembly and Assembly, "Pilot Valve (Travel) - Install" in this manual.