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MG6-OLVERT-3B Rev. 2 6/27/00
Air compressor is not supplying
enough air to operate accesso-
ries. (Continued)
Knocking noise.
Excessive oil consumption.
Air compressor overheating.
Motor overheating.
CAUSEPROBLEM
CORRECTION
Hole in hose.
Check valve restricted.
Air leaks.
Defective check valve.
Loose pulley.
Low oil level.
Loose flywheel.
Loosen air compressor mounting
screws.
Belt too tight/too loose.
Carbon build-up.
Restricted air intake.
Air compressor overworked.
Poor quality oil.
Air compressor overworked.
The outlet tube and/or check valve is
restricted.
Dirty air compressor.
High ambient temperature.
Incorrect oil, low oil.
Low voltage.
Pressure switch set beyond factory
setting.
Belt too tight.
Air compressor valves have excessive
carbon deposits build-up; restricted
check valve.
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 Outfit Parts Manual
for correct torque specifications.
Maintain prescribed oil level. Add oil.
Tighten screw. See Outfit 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 Outfit 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.
Reduce air consumption or add another air
compressor to take up some of the load.
Check the tube and the check valve. Clean if
necessary.
Clean the air compressor thoroughly.
Use remote air intake.
See oil recommendation on page 14.
Provide correct voltage. Consult local power
company or electrician.
Do not set switch beyond maximum for which
outfit was designed as noted on nameplate.
Adjust for proper tension.
Clean or replace air compressor valves or check
valve.
TROUBLESHOOTING GUIDE (cont'd)