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Operation
Operating Tips
Always use full throttle (maximum engine
speed) when breaking.
Use low range (turtle position) on the speed
selector for best performance and smoothest
operation.
Adjust the flow divider valve to approximately
the 10 o'clock position.
Place the bit within 6 to 18 inches of the edge of
the material to be broken with the breaker angled
slightly towards the edge (Fig. 4).
Figure 4
If the bit is positioned too far from the edge of
the material the energy may be absorbed by the
material without breaking it. If the material has
not cracked after 15 to 20 seconds, stop the
breaker and move the bit to a different location.
IMPORTANT: Continuous penetration in the
same location for long periods of time will
create high temperatures at the tip of the bit.
This could cause the bit to lose its temper and
mushroom under impact, destroying the bit.
8
When breaking, always apply downward
pressure with the loader arms until the front
wheels raise off of the ground a few inches
(Fig. 4). Maintain this pressure as the bit works
its way into the material being broken.
Do not move the auxiliary hydraulics lever to
engage the breaker unless the bit is on the
ground and downward pressure is applied.
Do not bind the bit in the material being cut.
Binding of the bit can cause the bit to bend or
wear out prematurely. Ensure that all force
applied to the breaker is inline with the bit, not
side to side or front to back. This will require
frequent adjustments in the positioning of the
traction unit.
Listen to the sound of the breaker when is is
operating. The sound will be different when
there is adequate downward pressure than when
not enough pressure is being applied.
Many materials do not respond well to continued
hammering in one place. Move the the breaker
m–4249
each time that it penetrates the material without
breaking it. When you move the breaker to a
new location, move it in a line parallel to the
edge of the material, about 3 inches from the
previous hole. This will score the material and if
done repeatedly, break off a large piece of the
material (Fig. 5).
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