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3. Precautions for operation of drilling device
1)
Please make sure that the direction of the drill bit is
perpendicular to the working surface when drilling and
keep this state as far as possible. If it is inclined to the
working surface, the drilling tool will be damaged in this
case. During drilling, please select the appropriate
drilling point, and confirm that the drill bit is indeed
stable before drilling.
It is required to keep adjusting the bucket cylinder
during operation to keep the penetration direction of the
drilling tool and the direction of the drilling tool body in
a straight line.
2) If there is not enough depth, pull out the drilling tool
first, and then restart the operation.
3) It can only be used to drill holes in the mud when the
drilling tool is connected to the top of the machine, and
it must not be used to drill holes on stones or mixed
stones.
4) Avoid pulling out the drilling tool when it is not
rotating, which may cause bending and damage.
5) The connecting seat of the drilling tool should be
vertical when drilling to prevent the drilling tool from
falling off, otherwise the screw of the adjusting seat will
be damaged.
6) It is prohibited to use drilling devices for oblique
drilling operation.
Summary of Contents for U27
Page 1: ...U27Hydraulic Excavator Instruction Manual Guangxi Yuchai Heavy Industry Co Ltd...
Page 5: ...1 1 Preface...
Page 17: ...2 1 Safety regulations...
Page 44: ...3 1 Parts introduction...
Page 49: ...3 6 Panel meter Oil level pointer Timing display Water temperature pointer Indicator area...
Page 55: ...4 1 Operation guide...
Page 89: ...5 1 Maintenance...
Page 130: ...6 1 Accessories guide...