-38-
Model G0954/55/56/57 (Mfd. Since 11/21)
Symptom
Possible Cause
Possible Solution
Safety relief
valve leaks.
1. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.
2. Safety relief valve at fault.
3. Pressure switch at fault.
1. Adjust settings (
Page 39). Do not exceed cut-in/cut-
out pressures listed on data sheet (
Page 6) or inside
pressure switch.
2. Test/replace.
3. Turn compressor
OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.
Delivered air
is dirty or has
excessive
moisture.
1. Tank needs to be drained.
2. In-line filter(s) or water separator(s) needed
in air supply line.
3. Delivery pipes are dirty (if used).
1. Open drain valve to drain condensation, then close.
2. Install in-line air filter(s) and water separator(s).
3. Remove delivery pipes, clean out, and replace.
Compressor
knocking.
1. Air filter(s) dirty/clogged.
2. Crankcase oil is low.
3. Pulley/flywheel loose.
4. Excess carbon build-up on piston or valves.
5. Piston assembly loose.
1. Replace air filter(s) (
Page 30).
2. Add crankcase oil (
Page 29).
3. Secure pulley/flywheel on shaft.
4. Take compressor to authorized service center.
5. Inspect and repair piston and connecting rod.
Excessive
noise while
running.
1. Crankcase oil is not correct type.
1. Drain and replace with correct oil (
Page 30).
Oil leaks onto
compressor or
floor.
1. Oil spilled when filling.
2. Air filter(s) dirty/clogged.
3. Too much oil in crankcase.
4. Crankcase oil is not correct type.
5. Oil fill plug/gasket is worn or damaged.
6. Pump gasket(s) worn or damaged.
7. Cylinder head cap screws loose.
8. Valve, plate, or ring is loose/damaged.
9. Damaged crankcase seal.
10. Damaged crankshaft.
1. Wipe unit clean with non-flammable cleanser.
2. Replace air filter(s) (
Page 30).
3. Drain oil to proper level (
Page 30).
4. Drain and replace with correct oil (
Page 30).
5. Replace gasket or fill plug.
6. Replace gasket(s).
7. Install cap screws with thread sealing tape.
8. Tighten or replace valve/plate/ring.
9. Replace crankcase or seal.
10. Repair/replace crankshaft.
Operation (Cont.)
Summary of Contents for G0954
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