TM 5-3805-280-10
Operating the Machine
USING HYDRAULIC THUMB
The hydraulic thumb was designed to be used for the
following procedures.
Clamping and lifting
Medium duty scrap handling
Demolition of wood and brick structures
Medium duty land clearing/grubbing
Bulky loose materials
Logging
Do not use the hydraulic thumb for the following
procedures.
Ripping-up concrete and asphalt
Quarry applications
Heavy scrap handling
Heavy land clearing
Heavy grubbing
Breaking ledge rock
Clamping with Bucket
From the stored position actuate and locate the hydraulic
thumb near the object to be picked up. Curl-in the bucket
(A) to the point where it begins to grasp and force the
object being picked up into the face of the hydraulic
thumb. The thumb is capable of large clamping forces and
could crush the object. To prevent the bucket and thumb
from crushing the object, "feather" the bucket control to
the point where the object can be picked up but not
crushed.
Continued on next page
CED,OUOE042,15 1901MAR991/2
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