Bleed The Jib Boom Rotator - Genie Z-25/8 Service Manual

First Edition • Third Printing
C-1

Bleed the Jib Boom Rotator

The jib boom rotator is a hydraulically-activated,
helical gear assembly used to rotate the jib boom
assembly 160 degress.
1 Connect a clear hose to the top bleed valve.
Place the other end of the hose in a container
to collect any discharge.
d
a clear hose
b top bleed valve
c bottom bleed valve
d container
2 Open the top bleed valve, but do not remove it.
3 Turn the key switch to ground control and pull
out the Emergency Stop button to the
position.
4 Hold the function enable switch to either side
and move the jib boom rotate toggle switch in
the direction for approximately 5 seconds,
RIGHT
then release it. Repeat three times.
Crushing hazard. Keep hands
clear of the jib boom pivot
weldment during rotation.
Part No. 41314
a
b
c
ON
Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
Section 4 • Scheduled Maintenance Procedures
Table C Procedure
5 Hold the function enable switch to either side
and move the jib boom rotate toggle switch in
the direction for approximately 5 seconds,
LEFT
then release it. Repeat three times.
6 Fully rotate the jib boom in the
and continue holding the jib boom rotate toggle
switch until air stops coming out of the bleed
valve. Immediately release the jib boom rotate
switch and close the bleed valve.
7 Rotate the jib boom to the right until it is
centered.
8 Connect the clear hose to the bottom bleed
valve and open the valve.
9 Rotate the jib boom in the
continue holding the jib boom rotate toggle
switch until air stops coming out of the bleed
valve.
Crushing hazard. Keep hands
clear of the jib boom pivot
weldment during rotation.
10 Close the bleed valve and remove the hose.
11 Turn the key switch to the
clean up any hydraulic oil that may have spilled.
12 Turn the key switch to ground control and pull
out the Emergency Stop button to the
position.
13 Hold the function enable switch to either side
and move the jib boom rotate toggle switch to
the full right and left directions and inspect the
bleed valves for leaks.
direction
LEFT
direction and
RIGHT
position and
OFF
ON
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