Oscillation Control Block; Description; Fig. 7-19: Oscillation Control Block - JLG Lull 1044C-54 II Series Service Manual

Oscillation Control Block

Description

31200079

Fig. 7-19: Oscillation Control Block

(Ref. Fig. 7-19) The oscillation control block assembly controls the function
of the rear oscillation lock cylinder.
When the oscillation lock system is in UNLOCK mode, the control block
allows hydraulic fluid to freely pass into and out of the cylinder.
When the oscillation lock system is in LOCK mode, the control block traps
hydraulic fluid in both the rod-end and base-end of the cylinder. This
hydraulic lock in the cylinder prevents the frame from rotating on the rear
axle.
Frame Tilt and Oscillation
Rear Oscillation
Lock Control Block
MV0750
7-31