Terex Genie 20N RJ, Service And Repair Manual

Page: 34 / 117

Service and Repair Manual September 2021
Jib Boom Components
22 Z®-30/20N • Z®-30/20N RJ • Z®-34/22 • Z®-34/22N Part No. 1268498GT
3-1
Jib Boom
How to Remove the Jib Boom
Note: Perform this procedure with the boom in the
stowed position.
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 platform.
2 Remove the platform mounting weldment and
the platform rotator. See Repair procedure,
How to Remove the Platform Rotator
3 Tag, disconnect and plug the jib boom lift
cylinder hydraulic hoses. Cap the fittings on
the jib boom lift cylinder.
4 Remove the cable cover from the side of the
jib boom.
5 Remove the mounting fasteners from the jib
boom/platform rotate manifold and lay the
manifold to the side. Do not remove the hoses
or disconnect the wiring.
Component damage hazard.
Hoses and cables can be
damaged if they are kinked or
pinched.
6
Models with rotating jib boom:
Tag,
disconnect and plug the hydraulic hoses from
the jib boom rotator. Cap the fittings on the
rotator manifold.
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.
7 Attach a lifting strap from an overhead crane
to the jib boom.
8 Models without rotating jib boom: Remove
the pin retaining fastener from the jib boom
pivot pin at the jib boom bellcrank. Use a soft
metal drift to remove the pin, then remove the
jib boom from the jib boom bellcrank.
Crushing hazard. The jib boom
could fall when the pin is
removed if not properly
supported by the overhead
crane.
Models with rotating jib boom:
Remove the
pin retaining fastener from the jib boom pivot
pin at the jib boom rotator. Use a soft metal
drift to remove the pin, then remove the jib
boom from the jib boom rotator.
Crushing hazard. The jib boom
could fall when the pin is
removed if not properly
supported by the overhead
crane.