19
MG6-OLVERT-3B Rev. 0 12/30/99
Compressor is not supplying
enough air to operate accesso-
ries. (Continued)
Knocking noise.
Excessive oil consumption.
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 compressor mounting screws.
Belt too tight/too loose.
Carbon build-up.
Restricted air intake.
Compressor overworked.
Poor quality oil.
The compressor is overworked.
The outlet tube and/or check valve is
restricted.
Dirty compressor.
High ambient temperature.
Incorrect oil, low oil.
Low voltage.
Pressure switch set beyond factory
setting.
Belt too tight.
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 "Trou-
bleshooting 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 specifica-
tions.
Replace the air intake.
Reduce air consumption or add another air compres-
sor 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 compres-
sor to take up some of the load.
Check the tube and the check valve. Clean if neces-
sary.
Clean the compressor thoroughly.
Use remote air intake.
See oil recommendation on page 14.
Provide correct voltage. Consult local power com-
pany or electrician.
Do not set switch beyond maximum for which outfit
was designed as noted on nameplate.
Adjust for proper tension.
Clean or replace compressor valves or check valve.
TROUBLESHOOTING GUIDE (cont'd)
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