Yuchai YC135-8, Operation And Maintenance Manual

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12)Do keep the machine balanceable, don’t
drive on the rock or over the roadblock.
13)Don't swerve on the slope.
14)The engine and the hydraulic oil must
be warmed up on the slope.
15)When the angle between the crawler and
the slope is 900, the machine will be very
dangerous
if it rotating. If the machine must rotate, the
bucket should close the ground, near the
machine body, the crawler towards the top
of the slope, and rotate with lower speed.
16)When the machine operates on the slope,
operating the rotating or operation device,
the machine may overturn.