Porter-Cable CPLC7060V Instruction Manual page 22

PROBLEM CAUSE
Excessive belt wear. Loose belt/tight belt.
Loose pulley.
Air compressor is not Prolonged excessive use of air.
supplying enough air
Air compressor is not large
to operate
enough for air requirement.
accessories.
Restricted air intake filter.
Loose belt.
Hole in hose.
Check valve restricted.
Air leaks.
Knocking noise. Malfunctioning check valve.
Loose pulley.
Low oil level.
Loose flywheel.
Loosen air compressor
mounting screws.
Belt too tight/too loose.
Carbon build-up.
Excessive oil Restricted air intake.
consumption.
Air compressor overworked.
Poor quality oil.
CORRECTION
Adjust belt tension. (See Belt
Replacement.)
Check for worn keyway or pulley
bore. Also check for bent motor
shaft. Replace parts if necessary.
(Refer to the Unit Parts Manual.)
Decrease amount of air usage.
Check the accessory air
requirement. If it is higher than the
CFM or pressure supplied by your
air compressor, you need a larger
air compressor.
Clean or replace air intake filter. Do
not operate the air compressor in
the paint spray area.
Adjust belt tension.
Check and replace if required.
Remove and clean or replace.
Tighten fittings. (See "Air Leaks"
section of "Troubleshooting Guide".)
Remove and clean or replace.
Tighten pulley set screw. See Unit
Parts Manual for correct torque
specifications.
Maintain prescribed oil level.
Tighten screw. See Unit Parts
Manual for correct torque
specifications.
Check screws. Tighten as required.
Adjust belt tension. (See Belt
Replacement.)
Remove the head and valve plate.
Clean the valve plate and the top of
the piston. (Be sure carbon does
not fall into the cylinder.)
Reassemble using new gaskets and
see Unit Parts Manual for correct
torque specifications.
Replace the air intake.
Reduce air consumption or add
another air compressor to take up
some of the load.
Drain pump and replace with
correct oil. Refer to Lubrication and
Oil Section.
22-ENG