Komatsu PC80MR-5E0, Operation & Maintenance Manual

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4.
After warm-up operation, check that the machine monitor
(5) 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.
5.
Check for abnormal exhaust gas color, noise, or vibration.
If any abnormality is found, contact your Komatsu distributor.
6.
Set the lock lever (2) to LOCK position (L).
7.
Operate the following levers and pedals, and check that
the machine does not move.
• Work equipment operation and swing operation can-
not be done by R.H. and L.H. work equipment control
levers.
• Machine does not travel by operating R.H. and L.H.
travel levers.
• Blade does not move by operating blade control lever.
• Boom does not swing by operating boom swing con-
trol pedal.
Warm-up operation of the engine is completed.
Then, perform the warm-up operation for the hydraulic components.
METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION
k k
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.
RKA63560
OPERATION MACHINE OPERATIONS AND CONTROLS
3-125
WENAM00241