2022 2096 26 45
Oil sump strainer plugged
Excessive leakage at crankshaft seals
Oil pump incorrectly assembled to the bearing carrier (“o” ring not properly
located between oil pump body & bearing carrier)
Oil pressure adjusting screw not set properly
Defective oil pressure gauge
unloads excessively
Compressor valves or unloaders defective
Compressor operating at incorrect speed
Unloader pilot differential set too close
Pressure switch defective
Defective pressure switch
Moisture and/or oil build-up on the pressure switch diaphragm
Plugged air passage from the receiver to the pressure switch
Loose electrical connection
Excessive air pressure in air
receiver
Air pressure gauge inaccurate
Leaks in unloader piping system
Defective compressor head unloader
Pilot valve or pressure switch set incorrectly or defective
Pressure switch wired incorrectly
Tube to compressor head unloader plugged
pressure
Intercooler restricted or plugged
Compressor valves in second stage broken or not functioning properly
Pilot valve or pressure switch set incorrectly or defective
Compressor valves or head unloaders in first stage not functioning abnormally
low properly or defective
Restricted air inlet filter or suction line
Pilot valve or pressure switch set incorrectly or defective
Pressurized air at head unloader not venting properly when demand for air is
required
Compressor valve or head gasket leaking
Leaking air at intercooler or intercooler connections
Defective compressor valves
Pressure setting too high
Clogged intercooler, internally or externally
Inadequate ventilation, or recirculation of hot air
Pulley/sheave rotation wrong
Compressor incorrectly sized
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