Komatsu PC45MR-30403, Operation And Maintenance Manual, Page: 226 / 475

METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION
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WARNING
• Before warming up the hydraulic component, check
that there is no person or obstacle in the area around
the machine, then sound the horn and start the opera-
tion.
• The warm-up operation for the hydraulic component is
necessary not only for the circuit between the pump
and cylinders and between the pump and motor, but
also for the control circuits.
Do not perform the operation just for one cylinder or
motor, or the operation just in one direction. Perform
the operation in all directions for all the work equip-
ment (boom, arm and bucket), swing, travel, and at-
tachment (if equipped).
• Check the direction of the track frame before operating
the travel lever.
1.
Set the working mode to P mode on the machine monitor
(1).
It quickens the warm-up of the hydraulic component.
For the working mode setting, see “WORKING MODE SE-
LECTION”.
2.
Move the lock lever (2) slowly and securely to FREE posi-
tion (F).
Be sure to operate the lock lever (2) by the operating por-
tion on the top.
Operate the R.H. and L.H. work equipment control levers
(3) and (4) slowly to raise the bucket from the ground.
3.
Turn the fuel control dial (5) to the point (c) of 2/3 between
Low idle (MIN) position (a) and High idle (MAX) position
(b).
OPERATION MACHINE OPERATIONS AND CONTROLS
3-165