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Section 7 • Repair Procedures
Jib Boom Components
3-1
Jib Boom
How to Remove the Jib Boom
Perform this procedure with the
boom in the stowed position.
When removing a hose assembly
or fitting, the O-ring on the fitting
and/or hose end must be replaced
and then torqued to specification
during installation.
Refer to Section Two, Hydraulic
Hose and Fitting Torque
Specifications.
1 Remove the platform. See 2-1,
How to Remove the Platform.
2 Raise the jib boom slightly and place blocks
under the platform mounting weldment. Then
lower the jib boom just until the platform
mounting weldment is resting on the blocks.
Do not rest the entire weight of
the jib boom on the blocks.
3 Remove the cable cover mounting fasteners
from the ground controls side of the jib boom.
4 Remove the jib boom pivot pin retaining
fasteners that attach the clamps at the jib
boom rotator. Do not remove the pins.
7 - 10
Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
5 Remove the retaining fasteners from the two
hose clamps on the jib rotator. Remove the
clamps.
6 Z-25/8 before serial number 212
Z-20/8 before serial number 122
Z-20/8N before serial number 896:
Remove the jib manifold cover mounting
fasteners. Remove the cover.
7 Tag and disconnect the wiring from the jib
boom manifold.
8 Tie the wiring and cables out of the way.
Component damage hazard.
Cables and wiring can be
damaged if they are kinked or
pinched.
9 Tag, disconnect and plug the hydraulic hoses
from the jib boom lift cylinder. Cap the fittings
on the cylinder.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
10 Support both jib boom leveling arms with a
lifting device.
11 Remove the pin retaining fasteners from both
ends of the jib boom leveling arm pivot pin at
the platform mounting weldment.
First Edition • Third Printing
Part No. 41314
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