40
Fig 3-14
2.Put the safe pole①(Fig 3-13)
“
unlock
”
position
3.
Slowly move cylinder of the boom
, bucket arm and bucket for 5 times
to let the hydraulic oil cycle without
load in the hydraulic system.
4.
Check the interval of working devices
Lift working devices then turn
clockwise for 3 cycles then anticlockwise
for 3 times.
5.
Put the working device on ground to
Let one side of the track shoe off ground
On a firm ground, the other side track
Shoe on ground, control the traveling
Motor forward and backward for two times,
then check the other side track shoe in the
same way.
Warming up of the hydraulic
system in low temperature
1.
Running the engine in idle speed
without load for 5 minutes(Fig 3
—
16)。
Fig 3-13
Fig 3-15
Fig 3-16
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