Komatsu PC45MR-30403, Operation And Maintenance Manual, Page: 227 / 475

4.
Operate the R.H. and L.H. work equipment control levers
(3) and (4) to warm up the hydraulic components.
Repeat the operation of the R.H. and L.H. work equipment
control levers (3) and (4) for 5 minutes.
NOTICE
When the work equipment is operated, take care that it
does not interfere with the machine or ground.
1) Operate the R.H. work equipment control lever (4)
slowly to set it to bucket CURL position (m).
Keep the lever at bucket CURL position (m) for 30
seconds.
2) Operate the R.H. work equipment control lever (4) slowly to set it to the bucket DUMP position (k).
Keep the lever at the bucket DUMP position (k) for 30 seconds.
3) Operate the L.H. work equipment control lever (3) slowly to set it to the arm IN position (f).
Keep the lever at the arm IN position (f) for 30 seconds.
4) Operate the L.H. work equipment control lever (3) slowly to set it to the arm OUT position (g).
Keep the lever at the arm OUT position (g) for 30 seconds.
5.
After the warm-up operation, check that the machine moni-
tor (1) is in the following conditions.
(6) Engine coolant temperature gauge
The graduation of gauge is within normal range.
(7) Fuel gauge
The graduation of gauge is within normal range.
(8) Caution lamp display
OFF
If any problem is found, perform maintenance or repair.
6.
Check for abnormal exhaust gas color, noise, or vibration.
If any problem is found, contact your Komatsu distributor.
7.
In cold weather (ambient temperature is less than 0 °C {less than 32 °F} ), perform the warm-up operation
for hydraulic system in cold weather.
NOTICE
Warm-up all the hydraulic component by performing the warm-up operation for hydraulic system in
cold weather (ambient temperature is less than 0 °C {less than 32 °F} ), even when the display
shows the correct temperature.
Perform the warm-up operation for hydraulic system in cold weather according to the following procedure.
1) Turn the fuel control dial (5) to High idle (MAX) posi-
tion (b).
2) Repeat the work equipment operation in step 4 for 3 to
5 minutes.
MACHINE OPERATIONS AND CONTROLS OPERATION
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