Genie Z-30/20N, Service Manual

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Part No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N 4 - 11
June 2011 Section 4 • Repair Procedures
REV A
7 Place a block of wood under the platform
leveling slave cylinder for support. Protect the
cylinder rod from damage.
8 Remove the pin retaining fasteners from the jib
boom bell crank at the extension boom. Use a
soft metal drift to remove the pin.
9 Use a soft metal drift to remove the slave
cylinder rod-end pivot pin.
10 Remove the jib boom bell crank from the
extension boom.
Crushing hazard. The jib boom
bell crank could become
unbalanced and fall when the pins
are removed if not properly
supported and secured to the
lifting device.
3-3
Jib Boom Rotator
(models with rotating jib boom)
The platform rotator is a hydraulically activated
helical gear assembly used to rotate the jib boom
160 degrees.
How to Remove the Jib Boom
Rotator
Note: 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 2,
Hydraulic Hose and
Fitting Torque Specifications.
1 Remove the jib boom, See 3-1, How to Remove
the Jib Boom.
2 Support and secure the jib boom rotator to an
appropriate lifting device.
3 Remove the eight mounting bolts from the jib
boom rotator mount.
4 Remove the center bolt. Carefully remove the
jib boom rotator from the machine.
Crushing hazard. The jib boom
rotator could become unbalanced
and fall when removed from the
machine if not properly supported
and secured to the lifting device.
Note: When installing the jib boom rotator, be sure
to torque the fasteners to specification. Refer to
Section 2,
Specifications.
5 Support and secure the jib boom bell crank to
an appropriate lifting device.
6 Remove the pin retaining fasteners from the
slave cylinder rod-end pivot pin. Do not remove
the pin.
JIB BOOM COMPONENTS