Doosan HP375WCU - Fault Finding and Troubleshooting

Lubrication Operation & Maintenance Manual
63
Fault Finding
FAULT
CAUSE REMEDY
No reaction from
instrument panel
when key turned
to (I) position.
Batteries not
connected.
connect batteries.
Fuse at starter motor
‘blown’.
Replace fuse.
Engine fails to
start.
Low battery charge. Check the fan belt tension, battery and cable
connections.
Bad earth connection. Check the earth cables, clean as required.
Loose connection. Locate and make the connection good.
Fuel starvation. Check the fuel level and fuel system
components.
Replace the fuel filter
if necessary.
Relay failed. Replace the relay.
Faulty stop solenoid Check the stop solenoid
Engine stops
while in service
or is reluctant to
start.
Low fuel level. Fill fuel tank and bleed air from fuel system if
necessary. (Refer to MAINTENANCE
SECTION).
Safety shut-down
system in operation
Check the safety shut-down switches.
Engine starts but
stalls when the
switch returns to
position /.
Electrical fault Test the electrical circuits.
Low engine oil
pressure.
Check the oil level and the oil filter(s).
Faulty relay Check the relays.
Faulty key -switch Check the key-switch.