TM 5-3805-280-10
Operating the Machine
Clamping with Hydraulic Thumb
CAUTION: This method is less precise and
should only be used where there is no concern
about crushing the object to be clamped.
Retract the hydraulic thumb to the store position (B). This
allows better operator visibility. Position the bucket behind
and curl it in until it is near or in contact with the object
being picked up. Actuate the hydraulic thumb and allow it
to grasp and clamp. This method of grasping is usually
less precise and objects may be crushed.
Lifting Objects
CAUTION: Always use caution when lifting and
transporting objects with the hydraulic thumb
and bucket. Excavators can lift heavy objects
that are closer to the excavator. As heavy
objects are moved further away from the
machine via boom and arm actuation, the
possibility of making the machine unstable
exists. Use caution when lifting, moving and
rotating heavy objects away from the
excavator's main body.
Never lift clamped objects over people. The
possibility always exists that the lifted objects
could drop.
Releasing Clamped Objects
CAUTION: Always look before you release a
clamped load. Never release a clamped load
while moving or turning. Objects clamped in the
jaws should be released one of two ways.
Retract the material clamp or retract the bucket.
CED,OUOE042,15 1901MAR992/2
7-22
