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GE, GX Series
Backhoe
Controls
27
•
Push down on the left-hand side of the pedal and hold
to extend the boom. Releasing the pedal stops boom
movement.
00955
Fig. 14 –
Extend Dipper Boom
•
Push down on the right-hand side and hold to retract the
boom.
00956
Fig. 15 –
Retract Dipper Boom
In the center position, the extender is stationary. When not in
use replace the foot control cover.
When retracted, the bucket and dipper stick can curl up tight to
the boom for easy travel and compact storage.
6.5 Hydraulic Thumb
(If Equipped)
A hydraulic thumb is available as a factory-installed option on
GX720 and GX920 backhoes. The hydraulic thumb must be
ordered with the backhoe at the time of manufacture. It cannot
be installed afterwards.
The thumb cannot be installed on a GX920XT (with extendable
dipper arm). There is no provision for mounting it with the
telescopic dipper, and no provision for operating it in the
hydraulic circuit.
The hydraulic thumb makes it easier to pick, hold and move
awkward material such as rocks, concrete, branches, and
debris that does not fit into the bucket. Use the thumb for
grasping objects between the thumb and bucket for precision
material handling, land clearing, and utility applications.
6.5.1 Operation
The hydraulic thumb has been designed to match Wallenstein
backhoes and buckets. The thumb can be fully retracted against
the boom for full unobstructed use of the bucket.
Become familiar with the added weight when picking up a load
with the thumb. Use caution to avoid sudden stops and starts.
A foot pedal on the left-hand side of the console controls the
thumb cylinder. Flip the pedal cover up to use the foot pedal
control.
00954
Fig. 16 –
Foot Control Cover