33
Troubleshooting Chart
Problem Cause Correction
Low starter revolution speed 1. Battery low or dead
1. Check battery; charge or replace
as needed
Starter rotates but engine does not
start
1. Fuel filter clogging
2. Fuel pre-filter clogging
3. No diesel fuel
4. Air mixing in fuel pipings
5. Failure of engine stop solenoid
1. Clean / replace
2. Clean / replace
3. Add diesel fuel
4. Bleed air
5. Contact authorized dealer
Discharge air pressure does not
reach 100 psi (6.9 bar)
1. Pressure regulator needs
adjustment
2. Pressure regulator trouble.
1. Adjust
2. Contact authorized dealer
Engine does not reach maximum
speed
1. Failure of engine controller
2. Unloader orifice clogging
3. Engine trouble
4. Fuel filter clogged
5. Water accumulated in fuel pre-
filter
6. Air filter element clogged
1. Contact authorized dealer
2. Clean
3. .Contact authorized dealer
4. Clean / replace
5. Drain
6. Clean / replace
Revolution drops before discharge
air pressure reaches 100 psi (6.9
bar)
1. Pressure regulator needs
adjustment
2. Pressure regulator issue
3. Unloader orifice clogged
1. Adjust
2. Contact authorized dealer
3. Check / clean
Engine does not reach minimum
revolution at unload
1. Failure of engine controller
2. Failure of accelerator controller
1. Contact authorized dealer
2. Contact authorized dealer
Safety valve relieves at unload
1. Pressure regulator needs
adjustment
2. Unloader valve / seat damage
3. Faulty safety valve
4. Faulty engine speed sensor
1. Adjust
2. Contact authorized dealer
3. Contact authorized dealer
4. Contact authorized dealer
Oil mixes in air (poor oil
separation)
1. Scavenging orifice strainer
clogged
2. Excessive oil in separator
receiver tank
3. Low discharge pressure
4. Oil separator deteriorated
1. Clean
2. Drain
3. Check unloader
4. Contact authorized dealer
Insufficient free air delivery
1. Air filter element clogged
2. Unloader valve cannot fully
open
3. Engine does not reach rather
speed
1. Clean / replace
2. Contact authorized dealer
3. Contact authorized dealer
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