Thumb Operation; Hydraulic Thumb Operation - Woods BH85 Operator's Manual

Figure 10. Level with Stabilizers
When leveling with a cut-out, cut a level pad for the
uphill side of the machine and use the spoils to build a
pad on the downhill side as shown in Figure 11.
Figure 11. Level with Cut-Out

THUMB OPERATION

(MECHANICAL & HYDRAULIC)
The optional thumb is used for grabbing objects and
securing them between the thumb and the bucket.
Become familiar with the geometry and extra weight
the thumb adds to the backhoe before operating. Large
heavy objects such as rocks and logs can increase
momentum when pivoting backhoe to the side. DO
NOT make sudden stops and starts. Be extremely
careful lifting and moving long items such as poles or
tree limbs which may extend beyond the normal back-
hoe operating area.
Improper usage can also damage the thumb or back-
hoe.
MAN1272 (10/22/2019)
Do not use the thumb to rake material.
●
Do not use the thumb to push or pull material.
●
Do not use the side of the thumb to move material.
●
Do not use as a lifting device with chain or rope.
●
Do not use as a pry bar to dislodge objects.
●
Place thumb in operating position by selecting an
appropriate pin location on the telescoping tube. Rotate
the bucket to hold material against the thumb.
When normal backhoe operation is required, place
thumb in storage position. Remove pin, rotate thumb
up against dipper, and insert pin to lock thumb into
position.

HYDRAULIC THUMB OPERATION

To activate the thumb, use the foot pedal on the left
side of the operator's platform.
To open thumb, press the left side of the pedal.
●
To close thumb, press the right side of the pedal.
●
Open or close the thumb and curl the bucket to grab
and secure objects.
Become familiar with these functions for smooth and
easy operation.
When normal backhoe operation is required, retract
thumb up against dipper as shown in Figure 13.
Figure 12. Thumb Operation
Operation 17