Secondary Boom - Genie Z-30/20N Service Manual

June 2011
REV A
5-1

Secondary Boom

How to Disassemble the
Secondary Boom
Bodily injury hazard. The
procedures in this section require
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 required.
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 counterweight cover.
2 Place a suitable lifting device under the platform
for support.
3 Disconnect the battery packs from the machine.
4 Remove the cable cover from the side of the jib
boom.
5 Remove the wire loom from the cables at the
platform control box.
Part No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
Section 4 • Repair Procedures
SECONDARY BOOM COMPONENTS
6 Locate the cables from the primary boom cable
track to the platform control box. Number each
cable and its entry location at the platform
control box.
7 Open the platform control box.
8 Tag and disconnect each wire from the cables
in the platform control box.
Electrocution/burn hazard. Contact
with electrically charged circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
9 Pull the cables out of the platform control box.
10 Pull all of the electrical cables out of the plastic
cable track. Do not pull out the hydraulic hoses.
11 Remove the hose clamps from the bottom side
of the primary boom.
12 Tag, disconnect and plug the hydraulic hoses
from the "P" and "T" ports at the jib boom/rotate
manifold. Cap the fittings on the 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.
13 Remove the hose clamp from the side of the
primary boom at the pivot end.
14 Remove the primary boom extend drive speed
limit switch (LS1) mounted on the side of the
primary boom at the pivot end. Do not
disconnect the wiring.
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