Estwing E10GCOMP Manuel page 9

Troubleshooting (Continued)
Problems
Excessive Vibration (Continued)
Compressor Knocks
Compressor Uses Too Much Oil
Piston Rings Not Seated
Possible Cause(s)
Excessive discharge pressure
Wrong oil being used
Loose flywheel, drive, pulley
Worn connector rods, wrist pin,
or main bearings
Compressor valves loose or
broken
Check valve knocks at low
pressure
Clogged inlet filter
Wrong oil being used, wrong
viscosity
Oil level too high
Crankcase breather valve
malfunction
Compressor runs unloaded too
long
Compressor operating outside in
cold conditions or inlet not
protected against weather
Worn piston rings
Piston rings not seated
09
Corrective Action
Reduce operating pressure
Drain and replace with proper oil
Tighten loose components
Check and replace worn parts
Check and replace worn or
broken valves
Remove and clean check valve
Clean inlet filter or replace as
necessary
Drain and replace oil
Fill compressor with oil to
proper level
Replace crankcase breather
Increase load or stop compressor
when not needed. Check for air
leaks
Provide adequate protection
against extreme weather
conditions
Replace piston rings
See below
Allow 100 hours of normal
operation for new rings to seat.
Drain oil and refill with the
recommended oils.
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