Operation – Allmand Brothers Allmand 7.5 FT BACKHOE User Manual
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LEFT HAND STABILIZER
Push lever forward, left hand stabilizer lowers. Pull lever
back, left hand stabilizer raises.
RIGHT HAND STABILIZER
Push lever forward, right hand stabilizer lowers. Pull lever
back, right hand stabilizer raises.
OPERATING BACKHOE
CAUTION: To avoid possible injury,
observe the following safety rules
WHEN OPERATING backhoe.
Operate from backhoe operators seat only.
Lower stabilizers until weight of tractor is supported
by stabilizers. Do not lift tractor tires off ground.
Do not dig near stabilizers.
Do not attempt to raise tractor off ground or move
tractor forward or backward using backhoe
dipperstick or bucket.
Do not lose stability by swinging bucket downhill
when positioned on a slope.
It is not difficult to become an efficient operator. Control
operating decals are located in front of control levers.
Study these decals. They will assist you in becoming
familiar with the controls.
Smooth, light handling of controls will result in the most
efficient backhoe operation.
Operate backhoe control levers to become familiar with
their speed and movements. Engine RPM will determine
speed of cylinder operation.
Swing boom several times to practice controlling the
speed of swing. Do not operate swing more than 45
degrees each way for the first few times. Gradually
increase the arc.
Best results are obtained by digging near center of swing
arc so material can be dumped on either side.
As operator becomes more familiar with operation of
backhoe, it will be common practice to operate two
controls at one time. For example with bucket extended
and dipperstick extended, the lift control and crowd
control can be operated together to bring bucket toward
operator with down pressure on it. As dipperstick
approaches operator, the crowd and bucket controls can
be operated together to close bucket and trap material.
At end of stroke, lift and crowd controls are operated to
move load up and away from operator to save time in
clearing excavation.
This dual operation of controls will speed and simplify
digging operation. Normally two or more movements will not
be equal or even simultaneous but as pressure within the
cylinders, and as resistance of an operating member of
backhoe lessens, it will begin to move. It is balancing the
force of one member against another.
NOTE: Actuating bucket is the key to powerful digging.
Operating the crowd and bucket controls simultaneously
will insure a full bucket and prevent wasted motion and
time.
OPERATION