Troubleshooting - AirMan SDG25S-3A3 Instruction Manual

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7.4 Troubleshooting

Should any trouble occur during operation, do not disregard the trouble. Investigate the
cause and take appropriate measures.
Read the manual carefully and fully understand what to do in case of trouble.
The more you understand about the construction and function of the unit, the faster you
can find a cause and solution to the problem.
This chapter describes the state, cause and countermeasures of major problems in
detail:
Symptom
Starter does not
rotate. Low starter
revolution speed
even when starting.
Warning lamp for
over crank goes on.
Engine oil pressure
warning lamp turns
on.
Coolant
temperature
warning lamp turns
on.
Charge warning
lamp turns on.
7. Maintenance/Adjustment
Cause
Malfunctioning battery
Fuel filter clogging
Filter clogging in fuel air-bleeding
electromagnetic pump
(SDG45S/60S/75S)
Malfunctioning fuel cut off solenoid
No diesel fuel oil
Air mixing in fuel pipings
Engine oil shortage
Engine oil filter clogging
Malfunctioning oil pressure switch
Loosened or disconnected wiring, or
connector
Radiator clogging.
Faulty thermostat
Faulty coolant temperature switch
Shortage of coolant
Slip of fan belt
Looseness, disconnection of wiring or
connectors
Alternator problem
Slipping fan belt
Looseness, disconnection of wiring or
connectors
7-3
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Countermeasures
Battery check→ Charge,
Change
Disassemble, clean, and
change
Change filter
Change solenoid
Check connector
Replenish fuel
Bleed air
Replenish oil
Change
Change
Check/fasten
Clean
Change
Change
Replenish
Adjust tension
Check/fasten
Check/change
Fasten/change
Check/fasten
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