MMD Equipment 400S-6B1 - Manual (Page 56)

5. Periodic Inspection/Maintenance
5-17
5.5.22 Change coolant
[4,000 hours or every 2 years]
Be sure to stop the machine and loosen the radiator cap slowly,
after the coolant water is sufficiently cooled and the inner
pressure is released, then take the cap off.
If the following procedures are neglected, the radiator cap
could be blown by the internal pressure or hot moisture air be
blown out to cause burning. Therefore, make sure to carry out
them without fail.
LLC (Antifreeze) is a toxic material.
When a person has drunk LLC (Antifreeze) by accident, make
him vomit and make him see a doctor immediately.
When a person gets LLC (Antifreeze) in his eyes, wash the eyes with clean running water and make him
see a doctor immediately.
When LLC (Antifreeze) is stored, put it in a container with an indication saying "LLC (Antifreeze) inside"
and seal it up, then Keep it in a place away from children.
Beware of flames.
<Procedure>
① To drain coolant, remove the radiator cap“1”, then loosen the drain valve“2”.
② Be sure to also unfasten the drain plug“3”on the engine cylinder block for drainage.
③ When the coolant is completely drained out, close each drain valve“2”and drain plug“3”, and
supply new coolant from the filler port of radiator“4”. [Water supply: about 16.4 gal.]
④ After changing the coolant, run the engine under unload operation for 2 to 3 minutes, then stop
it. Check the coolant level again and replenish it if necessary.
For details, refer to engine operation manual.
Upon changing coolant
H990432
1 4
3
2 2
A080126