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OPERATION
•
Hydraulic oil temperature caution lamp (7): Displays correct temperature
•
Fuel gauge (20): Indicator is in green range
•
Fuel level caution lamp (21): Displays appropriate level
•
Hydraulic temperature gauge (22): Indicator is in green range
•
Hydraulic temperature caution lamp (23): Displays correct temperature
11. Check for abnormal exhaust gas color, noise, or vibration.
If any problem is found, contact your Komatsu distributor.
NOTICE
Warm-up all the hydraulic component by performing the warm-up operation for hydraulic system in cold
weather (ambient temperature less than 0 °C) even when the hydraulic oil temperature caution lamp dis-
plays the correct temperature.
12. Hydraulic system warm-up operation in cold weather
1)
Turn the fuel control dial (4) to High idle (MAX) posi-
tion.
2)
Repeat the work equipment operation in step 6 for 3 to
5 minutes.
•
Display (A) when temperature is correct: Caution
lamp background (C) is blue.
•
Display (B) when temperature is low: Caution
lamp background (C) is white.
3)
Check that the hydraulic oil temperature caution lamp
displays the correct temperature.
If it is not displaying the correct temperature, repeat
the step 2) until the hydraulic oil temperature caution
lamp (7) displays the correct temperature.
13. Before starting the work, check that the fuel control dial (4)
is at a position midway between Low idle (MIN) and High
idle (MAX).
If it is not at the midway position, set it to the midway posi-
tion and run the engine at a mid-range speed before oper-
ating.
MACHINE OPERATIONS AND CONTROLS
3-187
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