GILLIG LOW FLOOR, Руководство по обслуживанию

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Air System
R-4 Disassembly
Before disassembling the R-14, mark the location of the mounting bracket to the cover and the cover to
the body.
1. Remove the 4 capscrews and lockwashers securing the cover to the body.
2. Remove the cover, sealing ring, and mounting bracket.
3. Remove the piston and O-ring from the body.
4. While depressing the exhaust cover, remove the retaining ring and slowly relax the spring be -
neath the exhaust cover.
5. Remove the exhaust cover assembly and O-rings.
6. Remove the inlet/exhaust valve return spring from the body.
7. Remove the inlet/exhaust valve from the body.
8. Remove the valve retainer from the inlet/exhaust valve.
9. Remove the Phillips head screw and exhaust cover from the R-14 cover.
10. Remove the service port cap nut and O-ring from the R-14.
11. Remove the diaphragm from the R-14 cover.
R-4 Cleaning and Inspection
1. Wash all metal parts in mineral spirits and dry them thoroughly.
When servicing the R-14 valve, all springs and rubber parts should be
replaced.
2. Inspect all metal parts for deterioration and wear, as evidenced by scratches, scoring, and corro-
sion.
3. Inspect the exhaust valve seat on the relay piston for nicks and scratches, which could cause
excessive leakage.
4. Inspect the inlet valve seat in the body for scratches and nicks.
5. Inspect the exhaust seat of the quick release diaphragm in the R-14 cover and make sure all inter
-
nal air passages in this area are open, clean, and free of nicks and scratches.
6. Replace all parts not considered serviceable. Replace all rubber parts and springs. Contact your
Gillig parts representative at (800) 735-1500 to obtain any valve rebuild kits.