Terex Genie Z-45 DC, Service And Repair Manual, Page: 47 / 140

July 2020
Part No. 1297714GT Z ® -45 DC • Z ® -45 FE 37
Service and Repair Manual
How to Disassemble the
Secondary Boom
WARNING
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 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 overhead lifting
device to the lug on the rod end of the primary
boom lift cylinder. Then raise the primary boom
lift cylinder with the lifting device, to a vertical
position.
6 Tag, disconnect and plug the hydraulic hoses
at the primary boom lift cylinder. Cap the fittings
on the cylinder.
WARNING
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.
WARNING
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.
WARNING
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.
10 Remove the pin retaining fasteners from both
sides of the secondary boom lift cylinder rod-
end pivot pin and barrel-end pivot pin. Do not
remove the pins.
11 Attach a strap from an overhead lifting
device to the lug on the rod end of one of the
secondary boom lift cylinders for support. Do
not apply any lifting pressure.
Secondary Boom Components