Kubota XN12-8 Operation Manual page 137

Maintenance
Every 1000h
Cleaning of Engine Cooling System
● Please stop the engine and wait for the
machine to cool down before
maintenance. .
• The engine, exhaust pipe, radiator, and
many other machine parts are really hot
when the engine is just stopped.
Touching such parts can cause scalding.
The engine coolant is also under high
•
temperature and high pressure when
the engine is just stopped. Take special
cautions while loosening the cap or plug.
Operating the machine in such case will
cause scalding and injuries by splashing
high temperature coolant.
● If the maintenance requires the running
of engine, assign two operators for
teamwork and keep contact with each
other.
• One operator must sit in the driver seat
to get ready to stop the engine
immediately when necessary. This
operator must pay special attention not
to touch any joystick or pedal, unless it's
absolutely necessary.
The other operator for the maintenance
•
must keep the body and clothing away
from motion parts of machine.
Warning
● While the engine is running, it's really
dangerous standing behind the machine,
as the machine probably moves
suddenly. While the engine is running,
never stand behind the machine.
● 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 and take out the radiator cap and
drainage plug.
During cleaning, if the coolant temperature is
low, the thermostat will be closed and the
coolant will not flow within the radiator. Before
cleaning, heat up the coolant to at least 90℃.
1. Open the engine hood.
2. Slowly loosen the radiator cap (3) to relieve
the internal pressure and then take out the
cap.
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