44
3.5.9 Operate in water or mud
You should note following information when operate
in water or mud:
1) The working area should be hard enough to
prevent excavator from going down.
2) The water flow should be slow.
3) Undercarriage immerged height should not exceed
chain support wheel.
4) Avoid immerging slewing support, inner gear ring,
and slewing connector.
5) The rear end of machine is not allowed to be
immersed into water.
When operate in these conditions, please check the
excavator position often.
3.5.10 Backhoe operation
1) Place the bucket teeth on ground while the angle
between bucket bottom and ground is 45°.
2) Apply arm to be the main digging force, pull
bucket to the machine direction.
3) When dirt adheres to the bucket, remove arm and
(or) bucket quickly to throw dirt.
4) When dig straight trench, place crawler parallel to
the trench. After digging to required depth,
remove machine to continue digging.
FIG. 3-28
FIG. 3-26
90
0
～110
0
20～30cm
FIG. 3-27
z When lower boom, you should avoid stopping it suddenly. Otherwise the
impact load may damage excavator.
z When operate arm, in order to prevent damaging hydraulic cylinder, you
should avoid lowering hydraulic cylinder to the bottom.
z Prevent bucket from colliding with crawler.
z When digging deep trench, you should prevent boom or arm cylinder hose
from impacting with ground.
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