3)
Operate blade control lever (2) to FLOAT position (d) (at lever stroke end) and hold it in that position,
then perform RIGHT and LEFT TILT relief operations intermittently.
4)
Raise the blade to the highest position.
6.
After completing relief operations, lower the blade to the ground.
7.
Operate blade control lever (2) to FLOAT position (d) (at lever stroke end) and hold it with your hand for 1
minute.
8.
Even when releasing blade control lever (2), check that blade control lever (2) is at FLOAT position (d).
9.
After 3 minutes, return blade control lever (2) to HOLD position (b).
10.
After the warm-up operation, check that each gauge and caution lamp indicate the normal values.
If any problem is found, perform maintenance or repair.
11.
Operate it under light load until the engine coolant temper-
ature gauge on machine monitor (3) indicates green range
(A) to (C).
(A) to (B): Red range
(A) to (C): Green range
(C) to (D): White range
REMARK
If the power train oil temperature is not sufficiently high, it
takes longer to reach the maximum speed.
12.
Check for abnormal exhaust gas color, noise, or vibration.
If any abnormality is found, contact your Komatsu distributor.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-201
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