22
TROUBLESHOOTING
Problem
Possible Cause
Solution
Excessive lubricant consumption and/
or excessive lubricant in hose.
Crankcase overfilled with lubricant.
Drain lubricant. Refill to proper
level with proper lubricant (refer to
LUBRICATION
).
Lubricant leaks.
Tighten bolts on compressor to proper
torque or replace gaskets.
Worn piston rings.
Take compressor to Service Center.
Wrong lubricant viscosity.
Drain lubricant & refill with proper
lubricant (refer to
LUBRICATION
).
Compressor on unlevel surface.
Level compressor.
Scored cylinder.
Take compressor to Service Center.
Plugged crankcase breather.
Clean or replace crankcase breather.
Air blowing from inlet filter.
Damaged inlet (reed) valve.
Take compressor to Service Center.
Insufficient pressure at tool or
accessory.
Leaks or restrictions.
Check for leaks or restrictions in hose
or piping. Repair.
Restricted air intake (filter plugged).
Replace air filter.
Slipping belt.
Tighten belt (refer to
BELT ALIGNMENT
& ADJUSTMENT
).
Hose or hose connectors too small.
Replace with larger hose or
connectors.
Compressor incorrectly sized.
Either use a smaller tool or a larger
compressor.
Regulator not turned up to high enough
pressure / faulty regulator.
Turn the regulator to the proper setting
/ replace faulty regulator.
Leaking valves in compressor.
Take compressor to Service Center.
Tank loses pressure rapidly when
compressor shuts off.
Loose connection or leak (pipe, tank
drain valve, tubing, fitting or hose).
Turn unit off, unplug it, & tighten or
replace fittings or components.
Faulty check valve.
Replace faulty check valve.
Moisture in discharge air.
Condensation in tank, caused by
high level of atmospheric humidity or
compressor is not run long enough.
Drain tank after every use. Drain tank
more frequently in humid weather &
use an air line filter.
Pressure in tank exceeds 135 PSI.
Defective pilot valve.
Replace defective pilot valve.
Incorrectly adjusted pilot valve.
Readjust pilot valve (see
PILOT VALVE
ADJUSTMENT
)
Crankcase lubricant is milky.
Water in lubricant due to humidity or
condensation.
Change lubricant. Move compressor to
less humid atmosphere.
Compressor runs backwards.
Reversed wiring polarity.
Contact qualified electrician.
Belt roll over.
Misaligned belts.
Align belts (Refer to
BELT ALIGNMENT &
ADJUSTMENT
).
Loose belt.
Tighten belts (Refer to
BELT ALIGNMENT
& ADJUSTMENT
).
