Doosan HP900, Operation & Maintenance Manual

Page: 79 / 90

Operating & Maintenance Manual Fault Finding
78 Book: 22846471 (3-09-07) Rev. B
Fault Finding
FAULT CAUSE REMEDY
No reaction from
instrument panel
when key turned to
(I) position. Emergency stop
actuated. Reset emergency stop button.
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).
Low water level Check if the low water lamp is extinguished.
Faulty relay Check the relays.
Faulty key-switch Check the key-switch.
Book:46623600 (10-12-2012) Rev. A