Kubota D1503-M-E Operator's Manual page 37

1ABK0000132.book 26 ページ ２００４年２月１９日 木曜日 午前１０時３０分
26 TROUBLESHOOTING
B When engine suddenly stops
Cause
*Check the fuel tank and refill the fuel, if
necessary.
Lack of fuel
*Also check the fuel system for air or
leaks.
*If necessary, replace with a new
Bad nozzle
nozzle.
*Check amount of engine oil with oil
Moving parts are
level gauge.
overheated due to
*Check lubricating oil system.
shortage of
*At every 2 times of oil change, oil filter
lubrication oil or
cartridge should be replaced.
improper
*Check to see if the engine bearing
lubrication.
clearances is within factory specs.
A When the engine has suddenly stopped, turn the
engine lightly by pulling on the fan belt. If the engine
turns easily without abnormalities, the cause of the
trouble is usually lack of fuel or bad nozzle.
B When color of exhaust is especially bad
Cause
Fuel governing
*Contact dealer for repairs.
device bad
Fuel is of extremely *Select good quality fuel.
poor quality. Use No. 2-D diesel fuel only.
Nozzle is bad. *If necessary, replace with new nozzle.
*Cause is poor atomization, improper
injection timing, etc. Because of trouble
Combustion is in injection system or in poor valve
incomplete. adjustment, or compression leakage,
poor compression, etc.
Check for the cause.
Countermeasures
Countermeasures
B When engine must be stopped immediately
Cause Countermeasures
Engine revolution
suddenly *Check the adjustments, injection timing
decreases or and the fuel system.
increases.
Unusual sound is
*Check all moving parts carefully.
heard suddenly.
Color of exhaust
*Check the fuel injection system,
suddenly turns
especially the fuel injection nozzle.
dark.
Bearing parts are
*Check the lubricating system.
overheated.
*Check the lubricating system.
*Check, if the engine bearing
clearances are within factory specs.
Oil lamp lights up
*Check the function of the relieve valve
during operation.
in the lubricating system.
*Check pressure switch.
*Check filter base gasket.
B When engine overheats
Cause Countermeasures
Engine oil *Check oil level. Replenish oil as
insufficient required.
Fan belt broken or
*Change belt or adjust belt tension.
elongated
Coolant insufficient *Replenish coolant.
Excessive
*Add water only or change to coolant
concentration of
with the specified mixing ratio.
antifreeze
Radiator net or
radiator fin clogged *Clean net or fin carefully.
with dust
Inside of radiator or
coolant flow route *Clean or replace radiator and parts.
corroded
Fan or radiator or
radiator cap *Replace defective parts.
defective
Thermostat *Check thermostat and replace if
defective necessary.
Temperature gauge *Check temperature with thermometer
or sensor defective and replace if necessary.
Overload running *Reduce load.
Head gasket
defective or water *Replace parts.
leakage
Incorrect injection
*Adjust to proper timing.
timing
Unsuitable fuel
*Use the specified fuel.
used