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Section 7 • Repair Procedures
JIB BOOM COMPONENTS
4 Pull the jib rotator hoses out through the jib
boom rotator.
Component damage hazard.
Hoses can be damaged if they are
kinked or pinched.
5 Support the jib boom rotator with a lifting
device. Do not apply any lifting pressure.
6 Remove the pin retaining fasteners from the
upper arm and upper leveling arm to the jib
boom rotator pivot pins. Do not remove the
pins.
7 Attach a lifting strap from an overhead crane to
the upper leveling arm at the jib boom rotator.
Do not apply any lifting pressure.
8 Use a soft metal drift to remove the upper
leveling arm pivot pin.
9 Place a 4 x 4 x 8 inch (10 x 10 x 20 cm) block
of wood between the upper boom arm and
upper leveling arm. Lower the upper leveling
arm onto the block.
10 Attach a lifting strap from an overhead crane to
the jib boom rotator.
11 Use a soft metal drift to remove the upper
boom pivot pin from the jib boom rotator.
Remove the jib boom rotator from the machine.
Crushing hazard. The jib boom
rotator may fall if it is not properly
supported.
7 - 14
Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
How to Bleed the
Jib Boom Rotator
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.
First Edition • Third Printing
ON
Part No. 41314
a
b
c
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