GILLIG LOW FLOOR, Руководство по обслуживанию

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20
Air System
Condition Possible Cause Solution
Discharge line blockage Check for freeze up in the discharge line.
Check low spots and eliminate any traps in the
discharge line.
Inspect and repair compressor discharge port and
clear any line restrictions. Replace damaged lines
as necessary.
Check for carbon build-up. If carbon has built up,
make sure cooling lines are not kinked or
restricted. If carbon has built up in the discharge
line, replace the line.
Inlet line kinked or
restricted Inspect the compressor air induction line for
kinks and restrictions. Repair or replace as
necessary.
Governor malfunction or
misadjustment Check for proper loader/unloader cycles of
compressor.
Refer to vehicle manufacturerís manual for
governor maintenance and troubleshooting
procedures.
External contamination Replace broken, defective or dirty air filters.
Clean contaminants from surface of compressor.
Air dryer purge valve
stuck open or leaking Check for air dryer malfunction. Refer to air
dryer manufacturerís service instructions.
Chafed or worn discharge
line Replace faulty sections of discharge line.
Loose or leaking air line
connections Verify all connections are secure.
Tighten to vehicle specifications where
necessary.
Inspect port threads for damage. If damage is
extensive, replace cylinder head.
Damage to compressor
valves and/or valve seats Replace the compressor.
No air delivery
Low air delivery
Low air pressure
Leaking or malfunctioning
internal pressure relief
valve Replace the compressor.
Loose drive hub Loose
accessory drive coupling Check fit of drive coupling.
Ensure hub is completely seated and crankshaft
nut is tight.
Inspect crankshaft for damage ó re place
compressor if crankshaft is damaged. Noisy air
compressor
None of the above, but
condition persists Replace the compressor.
Oil starvation to crank pin
or front main bearing Check oil pressure. Verify oil passage is free of
obstructions. Make necessary repairs.
Failed power steering
pump (through-drive
version only) Verify power steering pump is in proper
operating order. Refer to the component
manufacturerís service instructions.
Broken connecting
rod or crankshaft
All of the above Replace compressor.