Model G0954/55/56/57 (Mfd. Since 11/21)
-37-
Symptom
Possible Cause
Possible Solution
Low pressure
in tank, or
tank pressure
drops after
compressor is
turned
OFF.
7. Pressure relief valve releasing below cut-out
pressure.
8. Gasket(s) leaking.
9. Worn pump piston rings.
7. Replace pressure relief valve.
8. Check gaskets on cylinder head assemblies, repair or
replace as needed.
9. Inspect and replace pump piston rings.
Air leaks from
air filter(s).
1. Check valve components are dirty/damaged.
2. Reed valve(s) not sealing.
1. Clean/replace check valve components.
2. Remove cylinder head and replace reed valve(s).
Compressor
does not build
pressure, or
does not reach
full pressure.
1. Drain valve or output shut-off valve is open.
2. Tank needs to be drained.
3. Air filter(s) dirty/clogged.
4. Air leak in tank or delivery pipes.
5. Check valve components are dirty/damaged.
6. Reed valve(s) not sealing.
7. Head gasket or valve body gasket leaking.
8. Worn pump piston rings.
9. Broken crankshaft or connecting rod.
1. Close valve.
2. Open drain valve to drain condensation, then close.
3. Replace air filter(s) (
Page 30).
4. Check air tank, pipes, and all connections for leaks
(
Page 32). Do not attempt to repair leaking/damaged
tank, only replace.
5. Clean/replace check valve components.
6. Remove cylinder head and replace reed valve(s).
7. Remove cylinder head and replace gasket(s).
8. Inspect and replace pump piston rings.
9. Replace or rebuild compressor pump.
Air tools have
oily discharge.
1. Tank needs to be drained.
2. Air filter(s) dirty/clogged.
3. Too much oil in crankcase.
4. In-line oiler is out of adjustment (if used).
5. In-line filter(s) is damaged or missing (if
used).
6. Crankcase oil is not correct type.
7. Compressor pump at fault.
1. Open drain valve to drain condensation, then close.
2. Replace air filter(s) (
Page 30).
3. Drain oil to proper level (
Page 30).
4. Adjust in-line oiler drip ratio or use correct viscosity oil.
5. Replace filter(s) or in-line filter assembly.
6. Drain and replace with correct oil (
Page 30).
7. Worn compressor piston, rings, or valves. Rebuild or
replace pump.
Air tools
have watery
discharge or
get cold and
freeze up with
ice during use.
1. Tank needs to be drained.
2. In-line water separator(s) is full (if used).
3. Ambient environment has too much humidity.
1. Open drain valve to drain condensation, then close.
2. Drain water separator(s).
3. Install in-line air dryer(s) and water separator(s).
Air tool has low
supply pressure
but compressor
has sufficient
air pressure.
1. Air hose is too long.
2. In-line regulator(s) needs to be adjusted for
higher airflow delivery.
3. Machine is undersized.
4. In-line filter(s) is damaged or clogged (if
used).
5. In-line water separator(s) is full (if used).
6. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.
7. Air leaks in hose or delivery system.
8. In-line regulator(s) at fault.
9. Pressure gauge(s) at fault.
1. Use shorter hose.
2. Adjust regulator(s) to increase line PSI. DO NOT
exceed pressure rating of attached tool.
3. Use smaller attachment tool(s) or larger air
compressor.
4. Replace filter(s) or in-line filter assembly.
5. Drain water separator(s).
6. Adjust settings (
Page 39). Do not exceed cut-in/cut-
out pressures listed on data sheet (
Page 6) or inside
pressure switch.
7. Check air hoses and all connections for leaks
(
Page 32).
8. Inspect in-line regulator(s) for leaks. Replace if at fault.
9. Replace pressure gauge(s).
Operation (Cont.)
Summary of Contents for G0954
Page 64: ......
