Craftsman 919.157260 Manual Del Usuario página 22

compressed air sources. Personal injury may occur. Prior to attempting
any repairs, unplug the air compressor and bleed off all air tank air
pressure.
PROBLEM
Excessive tank
pressure-safety
valve pops off.
Air leaks at
fittings.
Continuous air
leak at unloader
valve.
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
Air leaks from
safety valve.
A13567
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or
CAUSE
Unloader valve does not
release pressure when tank
reaches "blow-off" pressure.
Tube fittings are not tight
enough.
Defective unloader valve.
Defective air tank.
Leaking seal.
Possible defect in safety
valve.
Unloader valve must be
replaced.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. DO NOT
OVERTIGHTEN.
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.
Air tank must be replaced.
Do not repair the leak.
weld or otherwise modify
air tank or it will weaken.
The tank can rupture or
explode.
Contact a Trained Service
Technician.
Operate safety valve
manually by pulling on ring. If
valve still leaks, it should be
replaced.
22- ENG
CORRECTION
Do not
drill into,