Genie TMZ-50/30 Service Manual page 72

Section 4 • Repair Procedures
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PRIMARY BOOM COMPONENTS
How to
Disassemble the Boom Extension
This procedure in this section
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 required.
Follow the disassembly steps to the point required
to complete the repair. Then re-assemble the
secondary boom by following the disassembly
steps in reverse order.
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 boom extension from the primary
boom. See 4-2, How to Remove the Boom
Extension.
2 Attach a lifting strap of suitable capacity from an
overhead crane to the jib mount.
3 Tag, disconnect and plug the platform level
slave 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.
4 - 18
4 Remove the pin retaining fasteners from the
platform level slave cylinder rod end pivot pin.
5 Place a wood block under the slave cylinder for
support.
6 Using a soft metal drift, remove the platform
level slave cylinder rod end pivot pin.
Crushing hazard. The cylinder will
fall if not properly supported when
the pivot pin is removed.
7 Remove the pin retaining fasteners from the jib
mount pivot pin.
8 Using a soft metal drift, remove the jib mount
pivot pin. Remove the jib mount from the
machine.
Crushing hazard. The jib mount
will fall if not properly supported
when the pivot pin is removed.
9 Remove the pin retaining fasteners from the
platform level slave cylinder barrel end pivot
pin.
10 Using a soft metal drift, remove the platform
level slave cylinder barrel end pivot pin.
Remove the cylinder.
Crushing hazard. The cylinder will
fall if not properly supported when
the pivot pin is removed.
11 Remove the pin retaining fasteners from the
extension cylinder rod end pivot pins.
12 Using a soft metal drift, remove the extension
cylinder rod end pivot pins. Remove the
cylinder.
Crushing hazard. The cylinder will
fall if not properly supported when
the pivot pin is removed.
TMZ-50/30
June 2005
REV B
Part No. 65162