Engine Overheating - Kubota XN12-8 Operation Manual

Troubleshooting

Engine Overheating

Engine Overheating
● If the steam overflows from the engine,
do not open the engine hood or machine
hood. The steam or hot water will
probably spray out to cause scalding.
● Do not disassemble the radiator cap or
drainage plug when the coolant is hot.
Stop the engine, wait for the engine and
radiator to cool down, and then slowly
loosen the radiator cap to relieve the
internal pressure.
● Please stop the engine and wait for the
machine to cool down before
maintenance.
The following symptoms indicate overheating.
● Engine water temperature should be
<105℃
● Steam came out of the engine room.
Warning
Remedy procedure
1. Park the machine on a safe place.
2. Check whether the steam overflows from
the closed engine hood or machine hood.
3. If the steam overflows from engine
compartment, immediately stop the engine
and contact your sales or service dealer for
repair. If no steam overflows, run the
engine at low idling speed to cool down
the coolant.
4. When the water temperature is less than
105°C, turn off the engine.
5. After the engine cools down, immediately
take the following checking and remedy
measures.
Loose fan belt ... Refer to page 5-23 for
adjustment.
Low coolant level ... Refer to page 5-17
for adding of coolant.
Water leakage ... Repair.
Dirty radiator fins ... Refer to page 5-32
for cleaning.
Deposits in cooling system... Refer to
page 5-36 for cleaning.
If the malfunction still exists after the above-
mentioned remedy procedures are taken, please
contact your sales or service dealers for repairs.
6-3