Service and Repair Manual
July 2021
Secondary Boom Components
44
Z
®
-45/25 • Z
®
-45/25J
Part No. 1312350GT
5-1
Secondary Boom
How to Disassemble the
Secondary 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.
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.
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
Z-45/25J:
Remove the jib boom. Refer to
Repair Procedure,
How to Remove the Jib
Boom.
3 Remove the primary boom. Refer to Repair
Procedure,
How to Remove the Primary
Boom
.
4 Remove the master cylinder. Refer to Repair
Procedure,
How to Remove the Master
Cylinder
.
5 Attach a lifting strap from an suitable lifting
device to the lug on the rod end of the primary
boom lift cylinder. Then raise the primary
boom lift cylinder with the crane, to a vertical
position.
6 Tag, disconnect and plug the hydraulic hoses
at the primary boom lift cylinder. 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.
7 Remove the pin retaining fastener from the
primary boom lift cylinder barrel-end pivot pin.
8 Use a slide hammer to remove the pin.
Remove the primary boom lift cylinder from
the machine.
Crushing hazard. The primary
boom lift cylinder could become
unbalanced and fall if not
properly supported by the lifting
device.
9 Tag, disconnect and plug the hydraulic hoses
on both of the secondary boom lift cylinders.
Cap the fittings on the cylinders.
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.
Содержание Genie Z-45/25 Bi-Energy
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