Jib Boom Lift Cylinder - Genie Z-30/20N Service And Repair Manual

Service and Repair Manual
Jib Boom Components
3-4

3-4 Jib Boom Lift Cylinder

Jib Boom Lift Cylinder
How to Remove the Jib Boom Lift
Cylinder
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 Raise the jib boom slightly and place blocks
under the platform mounting weldment. Then
lower the jib boom until the platform is resting
on the blocks just enough to support the
platform.
Note: Do not rest the entire weight of the boom on
the blocks.
2 Tag, disconnect and plug the jib boom lift
cylinder hydraulic hoses. 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.
24 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
3 Remove the pin retaining fasteners from the
jib boom lift cylinder rod-end pivot pin. Do not
remove the pin.
4 Use a soft metal drift to tap the rod-end pivot
pin half way out and lower one of the leveling
links to the ground. Tap the pin the other
direction and lower the opposite leveling link.
Do not remove the pin.
5 Attach a lifting strap from an overhead crane
to the rod end of the jib boom lift cylinder.
6 Remove the pin retaining fasteners from the
jib boom lift cylinder barrel-end pivot pin. Use
a soft metal drift to remove the barrel-end
pivot pin.
7 Use a soft metal drift to remove the jib boom
lift cylinder rod-end pivot pin. Remove the jib
boom lift cylinder from the machine.
Crushing hazard. The jib boom
lift cylinder may become
unbalanced and fall when it is
removed from the machine if it is
not properly supported by the
overhead crane.
September 2015
Part No. 1268498