Komatsu Utility 69001, Operation & Maintenance Manual

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OPERATION
OPERATION
3-73
OPERATIONS AND CHECKS AFTER STARTING ENGINE 3
WARNING
q
If there has been any abnormal actuation or trouble, turn the starting switch key to the OFF position.
q
If the work equipment is operated without warming the machine up sufficiently, the response of the
work equipment to the movement of the control lever will be slow and the work equipment may not
respond as the operator desires, so always carry out the warming-up operation. Particularly in cold
areas, be sure to carry out the warm-up operation completely.
WARMING UP OPERATIONS 3
NOTICE
Avoid abrupt acceleration until warm-up run is completed.
Do not run the engine at low idle or high idle for more than
20 minutes.
If it is necessary to run the engine at idle, apply a load or
run at a medium speed from time to time.
1. Turn fuel control dial (1) to the mid point between the low
idling speed (MIN) and full speed (MAX) to start up the
engine.
REMARK
The machine holds an engine revolution at 1200 rpm by means
of its engine cooling water warming-up function until after the
engine cooling water temperature reaches 30°C.
For more details on this function, see “STARTING IN COLD
WEATHER (3-70)“.
2. After warm-up is completed, check gauges and caution
lamps for proper operation. If any problem is found, repair
it.
Continue to run the engine under a light load until engine
coolant temperature gauge indicator (2) is within the green
range (B).
(A): White range
(B): Green range
(C): Red range
3. Check for abnormal exhaust gas color, noise, or vibration. If any problem is found, contact your Komatsu dis-
tributor.