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excessively or broken.
e) Bolt on cylinder head is loose and head
gasket is washed out causing air leakage.
f) Pipe between air compressor and air tank is
broken or air leaks from the joint thereof.
head gasket.
f) Replace the pipe or joint.
3. Oil flees in air compressor.
a) Suction is impeded or inlet air is filtered
improperly.
b) Oil return is impeded.
c) Cylinder block, piston and piston ring is worn
excessively; or oil control ring is on backward or
seized so that lubricating oil flees upward.
d) Air compressor is cooled incompletely.
e) Dirt is not drained from air tank frequently.
f) Air compressor is operated too long.
g) Pressure in crankcase of engine is too high.
h) Oil pressure in engine is too high.
i) Lubricating oil is deteriorated.
a) Check and replace the filter; check and eliminate
the twist and deformation of suction pipe.
b) Check and eliminate the bent, twist and
deformation of oil return pipe.
c) Check and replace the piston and piston ring.
d) Clear away oil stain, soot or dirt accumulated on
radiating fin. Replace damaged parts. Check
cooling pipes.
e) Check air valve of the air tank and clear away the
dirt.
f) Check and repair unloading system.
g) Replace or repair ventilating device for the
crankcase.
h) Inspect lubricating oil pressure of the engine (at
