Terex Genie 20N RJ, Service And Repair Manual

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Service and Repair Manual September 2021
Primary Boom Components
30 Z®-30/20N • Z®-30/20N RJ • Z®-34/22 • Z®-34/22N Part No. 1268498GT
22 Attach a lifting strap from an overhead crane
to the primary boom lift cylinder.
23 Place 2 x 4 x 18 inch / 5 x 10 x 46 cm support
blocks under the cylinder, across the
secondary boom.
24 Remove the pin retaining fastener from the
primary boom lift cylinder rod-end pivot pin.
Use a soft metal drift to remove the pin.
Crushing hazard. The primary
boom lift cylinder could become
unbalanced and fall if not
properly supported by the lifting
device.
25 Lower the rod end of the primary boom lift
cylinder onto support blocks. Protect the
cylinder rod from damage.
26 Remove the pin retaining fastener from the
primary boom pivot pin.
27 Remove the primary boom pivot pin with a soft
metal drift. Carefully remove the primary boom
assembly from the machine.
Crushing hazard. The primary
boom could become unbalanced
and fall when removed from the
machine if not properly attached
to the overhead crane.
How to Disa ssem ble t he Pri mary Boom How to Disassemble the Primary
Boom
Note: Complete disassembly of the boom is only
necessary if the outer or inner boom tubes must be
replaced. The extension cylinder can be removed
without completely disassembling the boom. Refer
to Repair Procedure,
How to Remove the
Extension Cylinder.
1 Remove the primary boom. Refer to Repair
Procedure, How to Remove the Primary
Boom.
2 Place blocks under the extension cylinder for
support.
3 Remove the retaining fasteners from the
extension cylinder barrel-end pivot pin. Use a
soft metal drift to remove the pin.
4 Remove and label the location of the wear
pads from the top side of the boom tube at the
platform end of the boom.
Note: Pay careful attention to the location and
amount of shims used with each wear pad.
5 Support the extension tube with an overhead
crane at the platform end of the boom.
Crushing hazard. The boom
extension tube could fall when
removed from the boom if not
properly supported.