Kubota V2403-CR-TIE4-BG Operator's Manual page 45

B When engine must be stopped immediately
Cause
Engine revolution suddenly
decreases or increases.
Unusual sound is heard.
Oil lamp lights up during operation.
Engine warning lamp lights up.
B When engine overheats
Cause
Engine oil insufficient
Fan belt broken or elongated
Coolant insufficient
Excessive concentration of antifreeze
Radiator net or radiator fin clogged
with dust
Inside of radiator or coolant flow route
corroded
Fan or radiator or radiator cap
defective
Thermostat defective
Temperature gauge or sensor
defective
Overload running
Head gasket defective or coolant
leakage
Countermeasures
* Check the adjustments and the fuel system.
* Check all moving parts carefully.
* Check the lubricating system.
* Check to see if the engine bearing clearances are within
factory specs.
* Check the function of the relieve valve in the lubricating
system.
* Check pressure switch.
* Check filter base gasket.
* Consult your KUBOTA Dealer.
Countermeasures
* Check oil level. Replenish oil as required.
* Change belt or adjust belt tension.
* Replenish coolant.
* Add water only or change to coolant with the specified
mixing ratio.
* Clean net or fin carefully.
* Clean or replace radiator and parts.
* Replace defective parts.
* Check thermostat and replace if necessary.
* Check temperature with thermometer and replace if
necessary.
* Reduce load.
* Replace parts.
TROUBLESHOOTING 33