Terex Genie Z-34/22DC, Service Manual

Page: 69 / 188

Service Manual April 2016
Jib Boom Components
56 Z-30/20N • Z-30/20N RJ • Z-34/22
• Z-34/22N
Part No. 139378
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 (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1 Remove the jib boom. Refer to Repair
Procedure,
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
Specifications,
Machine Torque 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.
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
bellcrank may become
unbalanced and fall if it is not
properly supported when it is
removed from the machine.