Troubleshooting guide

TROUBLESHOOTING CHART (Continued)
PROBLEM
Air leaks(cont)
CAUSE
Airleakin safetyvalve,
Low Discharge Pressure
Knocking
Defective checkvalve.
(Unloader vaive)
Prolonged excessive use ofair.
Restrictedcheckvalve.
Restrictedair intakefilter.
Air leaks.
Hole in hoseor air piping.
Faultypump.
Loosepulley.
Low oil level (compressorpump
and/orgasolineengine).
Restricted check valve.
Wrong oil used.
Compressor and/orengine bolts
loose.
Excessive carbon deposits in head.
CORRECTION
Operate safety valve manually by
pullingon ring. If valve stillleaks, it
shouldbereplaced.
A defective check valve resultsin a
constant air leak, back through the
unloadervalvewhenthereis pressure
inthe air tank and the compressoris
notrunning.Turntheengineoff; move
the unloadervalvetogglelevertothe
verticalposition.Ifair leaksoutof the
tankthroughtheunloadervalve,clean
or replacethe checkvalve.(DO NOT
OVERTIGHTEN).
Decrease amount ofair usage,
Remove and clean, orreplace.
Clean orreplaceair intakefilter.
Tightenfittings.
Checkand replace if required.
Repairor replace.
Tightenpulley set screw.
Check oil level and maintainat
prescribedlevel.
Remove and cleanor replace.
Followoil recommendationslisted
inthe "Gasoline Engine Owners
Manual".
Check all bolts and tightenas
required.
Removethe head andvalve plate.
Clean top ofpistonand bottom of
valveplate. Reassembleusingnew
gasket and torque screwsto
35 foot-pounds.
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