Gradall 534B (9103-1390) Service Manual - Manual (Page 54)

13
SWAY CIRCUIT
The sway circuit permits the operator to level the
main frame of the machine in relation to the position
of the front axle. With the sway cylinder the operator
can tilt the frame up to 8° in either direction from
horizontal. Movement of the sway lever to the right
or left actuates a plunger in the first control valve
section, and oil is routed to the sway cylinder, and
the machine sways right or left.
There is a bubble level in the cab to assist the
operator in determining when the frame and boom
are level.
HYDRAULIC CIRCUITS
We will now cover the various hydraulic circuits as
used in 534B Gradall Material Handler. We will
cover them in the order that they are positioned in the
main control valve bank and the outrigger valve
bank. Following the oil down-stream, they are as
follows: Sway, Auxiliary, Tilt, Crowd, Lift &
Outrigger. (Optional)
(Optional)