3-74 OM 28Z3 US – Edition 2.0 * * 28Z3b340.fm
Operation
Recommendations for digging
When planning and performing digging work, observe the following points:
• Exits from pits must be outside the excavation face and as level as pos-
sible.
• Dig by removing adjacent strips if possible.
• Always travel out of an excavation up the grade, with the bucket on the
up slope side of the machine.
• When entering an excavation down a slope with a loaded bucket,
always travel with the bucket on the up slope side.
Loading vehicles
When loading vehicles, take the following into account:
• If possible, the truck and the working direction of the bucket should form
an angle of 45°.
• Raise the full bucket to dump height only as you rotate towards the truck.
• If possible, dump with the wind behind you to keep the dust away from
your eyes, air filters and fans.
Freeing the machine
If your machine gets stuck in the ground:
☞ Dump the contents out of the bucket.
☞ Extend the boom, stick, and bucket to the maximum reach and lower the bucket to the
ground surface.
☞ Slowly uncurl the bucket to push the machine away from the bucket. While doing this,
operate the track propulsion system slowly to assist the action of the bucket.
➥ Under alternate circumstances, the bucket can be curled to free the machine in the
direction of the curling action.
➥ Once the machine has reached a firm surface, maneuver away from the unstable
surface conditions.
Loading vehicles
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