OPERATION MACHINE OPERATIONS AND CONTROLS
3-97
Hydraulic Equipment Warm Up 3
WARNING
q Before carrying out the warm-up operation for the hydraulic equipment, turn the swing lock switch
ON, check on the monitor that the swing lock is actuated, then start the warm-up operation.
q When warming up the hydraulic equipment, check that there is no person or obstacle in the surround-
ing area, then sound the horn and start the operation.
q Carry out the warm-up operation for the hydraulic equipment until the hydraulic oil temperature moni-
tor displays green.
q The warm-up operation for the hydraulic equipment is necessary not only for the circuit between the
pump and cylinders and between the pump and motor, but also for all the control circuits. Do not
carry out the operation just for one cylinder or motor, or the operation just in one direction. Carry out
the operation in both directions for the work equipment (boom, arm, bucket), swing, travel, and attach-
ment (if equipped).
1. Check that engine water temperature monitor (1) displays
green.
If it displays white, carry out additional warm up of the
engine until engine water temperature monitor (1) displays
green.
For details of the procedure, see “Engine Warm Up (3-95)“.
2. Turn swing lock switch (2) ON and check that the swing
lock monitor lights up.
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