NPK
- 28 -
OPERATION
OPERATING TECHNIQUES & PRECAUTIONS
DO NOT SLANT HAMMER
For the most efficient demolition, align the direction of force (
51
) from the boom with the
penetration direction (
52
) of the tool (HH). Failure to do this decreases the transfer of
energy from the piston to the rock and increases the bending forces at the fulcrum of
the tool. This unnecessary added stress leads to the following problems:
1. Premature bushing wear and/or tool breakage.
2. Breakage of tie rods.
3. Breakage of bracket bolts.
4. Decrease in transfer of energy translates to reduced production.
When the tool binds from incorrect working angle, the sound of the hammer changes.
Keep the boom direction of force (
51
)
in the same direction the tool is
penetrating. Use the boom cylinder to
preload the hammer (apply downforce),
and use the bucket and stick cylinders
for alignment. Keep the tool tangent to
the arc of the boom (
54
).
Summary of Contents for GH10
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