3.3 Operation Operation 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. 4 5 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. GK032010 3.3.4 Stopping engine NOTE If the engine is abruptly stopped before it has cooled down, engine life may be greatly shortened. Consequently, 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 GK020014 1. Run the engine at low idling for about 5 minutes to cool down gradually. OFF 2. Turn the key of starting switch (1) to the OFF position to stop the engine. ON 3. Remove the key from starting switch (1). START GK032196 3-74 WA150-5H – VEAM934100