Terex Genie Z-40, Service And Repair Manual, Page: 50 / 287

Service and Repair Manual June 2022
Primary Boom Components
36 Z ® -62/40 Part No. 1268555GT
6 Remove the retaining fasteners from the
master cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin. Lower the
master cylinder against the primary lift
cylinder.
Component damage hazard.
When lowering the master
cylinder down, be sure not to
damage the master cylinder
hoses or fittings.
7 Tag, disconnect and plug the primary boom
extension 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.
8 Tag, disconnect and plug the hoses under the
pivot end of the boom at the hose unions.
9 Using an overhead supporting device, attach
a strap to the rod-end of the primary boom lift
cylinder.
10 Remove the retaining fasteners from the
primary boom lift cylinder rod-end pivot pin.
Use a soft metal drift to remove the pin.
Crushing hazard. The boom lift
cylinder and primary boom will
fall if not properly supported.
11 Place a support block across the upper
secondary arm and lower the lift cylinder on it.
12 Remove the lower cable and hose tray
located under the primary boom and set it on
a supporting device.
13 Remove the retaining fasteners from the
primary boom pivot pin.
14 Remove the primary boom pivot pin with a
soft metal drift, then carefully remove the
primary boom from the machine and place it
on a structure capable of supporting it.
Crushing hazard. The primary
boom could become unbalanced
and fall when removed from the
machine if not properly attached
to the suitable lifting device.
How to Disa ssem ble t he Pri mary Boom How to Disassemble the Primary
Boom
Complete disassembly of the boom is only
necessary if the outer or inner boom tube must be
replaced. The extension cylinder can be removed
without completely disassembling the boom. Refer
to Repair Procedure,
How to Remove the Primary
Boom Extension Cylinder
.
1 Remove the extension cylinder. Refer to
Repair Procedure, How to Remove the
Primary Boom Extension Cylinder
.
2 Remove the primary boom. Refer to Repair
Procedure,
How to Remove the Primary
Boom .
3 At the pivot end of the primary boom, remove
the two side wear pads from the extension
tube.
4 At the platform end of the primary boom,
remove the upper and lower wear pad plates.
5 Support and slide the extension tube out of
the boom tube.
Crushing hazard. The primary
boom extension tube could
become unbalanced and fall
when removed from the primary
boom tube if not properly
supported.
Note: During removal, the lifting strap will need to
be adjusted for proper balancing.