Installation Guide

22 200-2790
Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM POSSIBLE CAUSE SOLUTION
Low Discharge Pressure Air leaks Tighten or replace leaking fittings or
connections. Do not overtighten.
Leaking valves Contact authorized service center.
Restricted air intake Clean or replace air filter element(s).
Blown gaskets Contact authorized service center.
Worn piston rings or cylinder Contact authorized service center.
Pump Knocking Loose engine pulley or compressor
flywheel
Retighten pulley and flywheel. Check
alignment.
Low oil level in pump crankcase Keep oil at proper level at all times.
Excess carbon on valves or top of piston Contact authorized service center.
Oil in Discharge Air Worn piston rings or cylinder Contact authorized service center.
Restricted air intake Clean or replace the air filter element(s).
Oil level too high Reduce to proper level. Use synthetic,
non-detergent air compressor oil.
Overheating Poor ventilation Relocate compressor to an area with cool,
dry, well circulated air, at least 12 in. from
nearest wall.
Dirty cooling surfaces Clean all cooling surfaces thoroughly.
Restricted air passages Replace transfer tubes and/or unloader.
Excessive Belt Wear Pulley out of alignment Realign pulley with compressor flywheel.
Improper belt tension Readjust.
Pulley wobbles Replace the pulley and check for a
damaged crankshaft or flywheel.
Excessive Unloader Cycling Air leaks in piping Tighten or replace leaking fittings or
connections. Do not overtighten.
Gasoline Engine Stall Air leaks in piping Tighten or replace leaking fittings or
connections. Do not overtighten.
Compressor Won’t Start in Cold
Temperatures
Compressor not winterized See cold weather preparation.
Engine flooded Remove spark plug and dry it. Reinstall.
Compressor too cold Move compressor to a warmer location.
TROUBLESHOOTING CHART