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——————————— OPERATION ———————————
DIPPERSTICK/BUCKET
Push lever forward, dipperstick moves away from operator.
Pull lever back, dipperstick moves toward operator.
Move lever to left, bucket curls in. Move lever right, bucket
extends out.
By
moving
lever
to
one
dipperstick can be extended or retracted at the same time as
bucket is being loaded or dumped.
Extend and load bucket by moving lever forward and to the left.
Retract and load bucket by moving lever back and to the left.
Extend and dump bucket by moving lever forward and to the
right.
Retract and dump bucket by moving lever back and to the
right.
The two operations of the boom lever combined with the two
operations performed by bucket and dipperstick control levers
provide four simultaneous operations from the two levers. Oil
flow will go to the operation which requires the least pressure.
The ability to feather valve spools and balance pressure
comes with experience, and will result in reduced cycle times.
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 rear of tractor is totally supported
by them.
•
Do not dig near stabilizers.
•
Do not attempt to raise tractor off ground or move trac-
tor 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 beside control levers. Study
these decals. They will assist you in becoming familiar with the
controls.
Smooth, light handling of the controls will result in the most
efficient backhoe operation.
Operate the backhoe control levers to become familiar with
their speed and movements. Engine speed will determine
speed of cylinder operation.
Swing the 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.
F-3546-3-04
of
the
intermediate
positions,
Best results are obtained by digging near the center of the
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 the bucket extended and the dipperstick
extended, the lift control and dipperstick control can be
operated together to bring bucket toward operator with down
pressure on it. As dipperstick approaches operator, the
dipperstick and bucket controls can be operated together to
close bucket and trap material. At the end of the stroke, lift and
dipperstick controls are operated to move the load up and
away from the operator to save time in clearing the excavation.
This dual operation of controls will speed and simplify the
digging operation. Normally the two or more movements will
not be equal or even simultaneous but as pressure within the
cylinders, and the resistance of an operating member of the
hoe lessens, it will begin to move. It is balancing the force of
one member against the other.
NOTE:
Actuating the bucket is the key to powerful digging.
Operating the dipperstick and bucket controls simultaneously
will insure a full bucket and prevent wasted motion and time.
7
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