48
24. Thumbs (Optional):
Backhoes can be equipped with an op-
tional thumb that is used as a back-stop
when picking up something. Thumbs
are available in a mechanical or hydrau-
lic position version.
a. Mechanical Thumb:
A kit is available that can be
mounted to the inside of the dip-
per arm. Use the adjustment in the
thumb and support arm to position
the thumb as required. Be sure
to install the retainers through the
mounting pins.
b. Hydraulic Thumb:
This kit is available to be mounted
to the inside of the dipper arm.
Route the hydraulic lines along the
dipper, boom and pivot points and
secure with clips or ties. Use the
control lever to position the thumb
as required.
Fig. 54 THUMBS
Mechanical Kit
Installing
Hydraulic
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