Genie Z-30/20N Service Manual page 57

April 2005
REV B
How to Remove the
Primary Boom
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting this
procedure without these skills and
tools could result in death or
serious injury and significant
component damage. Dealer
service is strongly recommended.
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 2, Hydraulic Hose and
Fitting Torque Specifications.
1 Remove the platform.
2 Remove the platform rotator. See 2-3, How to
Remove the Platform Rotator .
3 Remove the jib boom. See 3-1,
How to Remove the Jib Boom .
4 Models without rotating jib boom: Remove
the jib boom bellcrank. See 3-2, How to
Remove the Jib Boom Bellcrank .
Models with rotating jib boom: Remove the
jib boom rotator. See 3-3, How to Remove the
Jib Boom Rotator .
Part No. 106373
5 Tag, disconnect and cap the slave cylinder
hydraulic hoses at the union. Plug the hoses
from the slave cylinder.
6 Remove the upper cable track mounting
fasteners from the platform end of the boom.
7 Remove the cable track mounting fasteners,
then remove the cable track from the boom and
lay it flat on the ground.
8 Raise the secondary boom until the primary
boom lift cylinder rod-end pivot pin is accessible
above the mid-pivot weldment. Turn the
machine off.
9 Disconnect the battery packes from the
machine.
10 Remove all the hose and cable clamps from the
underside of the primary boom and at the pivot
end of the primary boom.
Genie Z-30/20N
Section 4 • Repair Procedures
PRIMARY BOOM COMPONENTS
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.
Component damage hazard. The
cable track can be damaged if it is
twisted.
Component damage hazard.
Cables and hoses can be
damaged if they are kinked or
pinched.
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