EN
PROBLEM
Loose beltwheel or motor pulley, excessive
end play in motor shaft or loose drive belts.
Lubricant viscosity too high.
Lubricant level too low.
Excessive noise during
Compressor valves leaky, broken, carbonized
operation
or loose.
Carbon build-up on top of piston(s).
Defective ball bearings on crankshaft or motor
shaft.
Leaking check valve or check valve seat blown
out.
Air leaks in air discharge piping.
Pressure switch differential too narrow.
Excessive starting and
stopping
Leaking check valve or check valve seat blown
out.
Excessive condensate in receiver tank.
Clogged or dirty inlet and/or discharge line
filter.
Lubricant viscosity too low
Detergent type lubricant being used.
Piston rings damaged or worn (broken, rough
or scratched). Excessive end gap or side
clearance.
High oil consumption
Piston rings not seated, are stuck in grooves or
end gaps not staggered.
Cylinder(s) or piston(s) scratched, worn or
scored.
Connecting rod, piston pin or crankpin
bearings worn or scored.
Crankshaft seal worn or crankshaft scored.
Worn cylinder finish.
Loose beltwheel or motor pulley, excessive
end play in motor shaft or loose drive belts.
Compressor valves leaky, broken, carbonized
or loose.
Carbon build-up on top of piston(s).
Knocking or rattling
Cylinder(s) or piston(s) scratched, worn or
scored.
Connecting rod, piston pin or crankpin
bearings worn or scored.
Defective ball bearings on crankshaft or motor
shaft.
10
RELEASED 26/Jan/2020 20:37:54 GMT
POSSIBLE CAUSE
POSSIBLE SOLUTION
Check beltwheel, motor pulley, crankshaft, drive
belt tension and alignment. Repair or replace as
required.
Drain existing lubricant and refill with proper
lubricant.
Add lubricant to crankcase to proper level.
Inspect valves. Clean or replace as required.
Install valve kit.
Clean piston(s). Repair or replace as required.
Inspect bearings and replace crankshaft assembly
if required.
Replace check valve.
Check tubing and connections.
Adjust pressure switch to increase differential, if
differential adjustment is provided. Install pressure
switch with differential adjustment feature if
differential adjustment is desired.
Replace check valve.
Drain receiver tank with manual drain valve.
Clean or replace.
Drain existing lubricant and refill with proper
lubricant.
Drain existing lubricant and refill with proper
lubricant.
Install ring kit.
Adjust piston rings.
Repair or replace as required
Inspect all. Repair or replace as required.
Replace seal or crankshaft assembly.
Deglaze cylinder with 180 grit flex-hone,
Check beltwheel, motor pulley, crankshaft, drive
belt tension and alignment. Repair or replace as
required.
Inspect valves. Clean or replace as required.
Install valve kit.
Clean piston(s). Repair or replace as required.
Repair or replace as required
Inspect all. Repair or replace as required.
Inspect bearings and replace crankshaft assembly
if required
22204861 Rev. C