TM 5-3805-280-24-2
Buckets
HYDRAULIC THUMB LOCK-UP PROCEDURE
The cap screws-washerhook assembly allows the
hydraulic thumb to be bolted in the stored position. This
will allow the thumb hydraulic cylinder lines to be
disconnected. It also allows for the lock-up of the thumb
for transporting the machine.
1. Retract the arm to the horizontal position and rest on
the ground.
2. Position the hydraulic thumb against the clamp rest
(C).
3. Shut the engine off.
4. Place the hook block (B) through the clamp rest (C).
5. Install cap screw (A) through the clamp arm faceplate
hole. Thread the cap screw in the hole in the hook
block (E).
6. Tighten the cap screw.
A--Cap Screw
B--Hook Block
C--Clamp Rest
D--Clamp Rest Hole
E--Lock-Up Assembly
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