Komatsu WA320-5H, Operation & Maintenance Manual, Page: 135 / 321

OPERATION
OPERATION
3-76
5. After carrying out the warming-up operation, check that the
gauges and pilot lamps are normal.
If there is any abnormality, carry out maintenance or repair.
Run the engine under a light load until engine cooling
water temperature gauge (4) and HST oil temperature
gauge (5) are in the white range.
6. Check that there is no abnormal exhaust gas color, noise
or vibration. If any abnormality is found, contact your
Komatsu distributor.
STOPPING ENGINE 3
NOTICE
If the engine is abruptly stopped before it has cooled
down, engine life may be greatly shortened. Conse-
quently, do not abruptly stop the engine except for an
emergency.
In particular, if the engine has overheated, do not abruptly
stop it but run it at medium speed to allow it to cool gradu-
ally, then stop it.
1. Run the engine at low idling for about 5 minutes to cool
down gradually.
2. Turn the key of starting switch (1) to the OFF position to
stop the engine.
3. Remove the key from starting switch (1).