TROUBLESHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE
CORRECTIVE
ACTION
Excessive
vibration
Loose compressor, motor, or
guard
Tighten components
Excessive discharge pressure
Reduce operating
pressure
Compressor not level
Level compressor
Leg bolts tightened too tightly to
floor
Loosen leg bolts
Wrong oil being used
Drain and replace
with proper oil
Loose flywheel, drive pulley or
drive belts
Tighten loose
components and
check belts
Worn rods, wrist pin or main
bearings
Check and replace
worn parts
Compressor
uses too much
oil
Clogged inlet filter
Clean inlet filter or
replace if necessary
Wrong oil being used, wrong
viscosity
Drain and replace
with proper oil
Oil level too high
Fill compressor with
oil to proper level
Crankcase breather valve
malfunction
Replace crankcase
breather
Compressor operating outside
in cold conditions or inlet filter
not protected against weather
Provide adequate
protection against
extreme weather
conditions
Worn piston rings
Replace piston rings
Piston rings not seated
Allow for 100hrs of
normal operation for
rings to seat
Compressor runs unloaded too
long
Increase load or
stop compressor
when not needed
(check for air leaks)
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