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22-ENG
D26998
Air leaks from
safety valve.
Possible defect in safety
valve.
Operate safety valve manual-
ly by pulling on ring. If valve
still leaks, it should be
replaced.
PROBLEM
CAUSE
CORRECTION
Tube fittings are not tight
enough.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT OVER-
TIGHTEN.
Air leaks at
fittings.
Air leaks in air
tank or at air
tank welds.
Defective air tank.
Air tank must be replaced.
Do not repair the leak.
Do not drill
into, weld
or otherwise modify air
tank or it will weaken. The
tank can rupture or
explode.
Air leaks
between head
and valve plate.
Leaking seal.
Contact a Trained Service
Technician.
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or com-
pressed air sources. Personal injury may occur. Prior to attempting any
repairs, unplug the air compressor and bleed off all air tank air pressure.
Unloader valve does not
release pressure when tank
reaches "blow-off" pressure.
Unloader valve must be
replaced.
Excessive tank
pressure-safety
valve pops off.
Continuous air
leak at unloader
valve.
Defective unloader valve. Turn off engine, move
unloader valve toggle lever
to vertical position. If air
leaks out of tank through
unloader valve, clean or
replace unloader valve.