Controls - Wallenstein GX620 Operator's Manual

4.6

CONTROLS

All controls on the Backhoe are mounted on top of the main frame within easy reach of the operator sitting in
the seat. It is recommended that all operators review this section of the manual to familiarize themselves with
the location and function of all machine controls before starting.
1. Hydraulic Valve Levers:
All hydraulic control valves are mounted on top
of the main frame. The two middle levers control
the position of the stabilizers and the outer joy
sticks control the function of the boom, dipper and
bucket.
a. Left Lever - Boom Position:
This 4 position spring-loaded-to-neutral-
center lever (joy stick) controls the angular
position of the
boom. Move
and hold the
SWING
lever to the left
to swing the
boom to the
left. Move and hold the lever to the right to
swing the boom to the right. Push and hold
the lever to extend the boom. Pull and hold
the lever to pull the the boom toward the main
frame. Release the lever to stop the motion
of the boom and it will stay in position.
b. Left Center Lever - Left Stabilizer Pos-
tion:
This 2 position spring-loaded-to-neutral-cent-
er lever controls the fl ow
of oil to the left stabilizer
cylinder. In its centered
position, the stabilizer
does not move.
and hold to lower the left
stabilizer to the desired
position. Release the
lever to stop the stabilizer movement. Pull
and hold the lever to raise the left stabilizer.
Release the lever when the stabilizer is in its
desired position.
c. Right Center Lever - Right Stabilizer Posi-
tion:
This 2 position spring-loaded-to-neutral-
center lever controls the
flow of oil to the right
stabilizer cylinder. In its
centered position, the
stabilizer does not move.
Push and hold to lower
the right stabilizer to the
desired position. Release
the lever to stop the stabilizer movement. Pull
and hold the lever to raise the right stabilizer.
Release the lever when the stabilizer is in its
desired position.
BOOM
DOWN
SWING
LEFT RIGHT
BOOM
UP
LEFT
STABILIZER
DOWN
Push
LEFT
STABILIZER
UP
RIGHT
STABILIZER
DOWN
RIGHT
STABILIZER
UP
LEFT
STABILIZER
BOOM
DOWN DOWN
SWING SWING
LEFT RIGHT
BOOM LEFT
UP STABILIZER
UP
a b
Fig. 4 HYDRAULIC CONTROLS
d. Right Center Lever - Outer Boom and
Bucket Position:
This 4 position spring-loaded-to-neutral-center
lever (joy stick) controls the position of the
DIPPER BOOM
UP
BUCKET
CLOSED
DIPPER BOOM
DOWN
dipper, boom and bucket. Move and hold the
lever to the left to close the bucket. Move and
hold the lever to the right to open the bucket.
Push and hold the lever to extend or raise the
dipper boom. Pull and hold the lever to retract
or lower the dipper boom. Release the lever
to stop the motion of the dipper boom and the
bucket and they will remain in their position.
RIGHT
STABILIZER
DIPPER BOOM
DOWN UP
BUCKET BUCKET
CLOSED OPEN
RIGHT DIPPER BOOM
STABILIZER DOWN
UP
Z94035
c d
BUCKET
OPEN
19