FAULT FINDING
50
12/150_23136591
−
C en
FAULT
CAUSE
REMEDY
No reaction from
instrument panel when
k d
( )
Batteries not connected.
Connect batteries.
instrument panel when
key turned to
(I)
position.
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
).
start.
Safety shut-down system in operation.
Check the safety shut-down switches.
Engine starts but stalls
when the switch returns
Electrical fault
Test the electrical circuits.
when the switch returns
to position
I
.
Low engine oil pressure.
Check the oil level and the oil filter(s).
to position
I
.
Faulty relay
Check the relays.
Faulty key
−
switch
Check the key
−
switch.
Engine starts but will
not run or engine shuts
Electrical fault.
Test the electrical circuits.
not run or engine shuts
down prematurely.
Low engine oil pressure.
Check the oil level and oil filter(s).
Engine starts but will
not run or engine shuts
Safety shut-down system in operation.
Check the safety shut-down switches.
not run or engine shuts
down prematurely.
Fuel starvation.
Check the fuel level and fuel system components. Replace the
fuel filter if necessary.
Switch failure.
Test the switches.
High compressor oil temperature.
Check the compressor oil level and oil cooler. Check the fan
drive.
Water present in fuel system.
Check the water separator and clean if required.
Faulty relay.
Check the relays and replace if necessary.
Engine Overheats.
Low water level
Check the level and replenish if necessary.
Blocked radiator.
Stop the machine and clean the cooling fins with compressed air
or steam. Use reduced pressure for cleaning the fins.
Reduced cooling air from fan.
Check the fan and the drive belts. Check for any obstruction
inside the cowl.
Faulty thermostat
Check the thermostat and replace if necessary.
Engine speed too high.
Incorrect throttle arm setting.
Check the engine speed setting.
Engine speed too low.
Incorrect throttle arm setting.
Check the throttle setting.
Blocked fuel filter.
Check and replace if necessary.
Blocked air filter.
Check and replace the element if necessary.
Incorrectly set regulation system.
Reset the regulation system. Refer to
SPEED AND PRESSURE
REGULATION ADJUSTMENT
in the
MAINTENANCE
section of
this manual.
Premature unloading.
Check the regulation system.
Excessive vibration.
Engine speed too low.
See ”
Engine speed too low”
Leaking oil seal.
Improperly fitted oil seal.
Replace the oil seal.
Refer also to the
Engine Manufacturer’s Manual.
Air discharge capacity
too low
Engine speed too low.
See “Engine speed too low”
too low.
Blocked air cleaner.
Check the restriction indicators and replace the element(s) if
necessary.
High pressure air escaping.
Check for leaks.
Incorrectly set regulation system.
Reset the regulation system. Refer to
SPEED AND PRESSURE
REGULATION ADJUSTMENT
in the
MAINTENANCE
section of
this manual.
