Terex Genie 20N RJ, Service And Repair Manual

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September 2021 Service and Repair Manual
Primary Boom Components
Part No. 1268498GT Z®-30/20N • Z®-30/20N RJ • Z®-34/22 • Z®-34/22N 33
15 Place a rod through the barrel-end pivot pin
and twist to remove the pin.
Crushing hazard. The primary
boom lift cylinder could become
unbalanced and fall if not
properly supported by the lifting
device.
16 Attach an overhead crane or similar lifting
device to the lug on the rod-end of the primary
boom lift cylinder. Carefully loosen the straps
and allow the primary boom lift cylinder to
slowly swing down.
17 Carefully remove the cylinder from the
machine.
Crushing hazard. The primary
boom lift cylinder could become
unbalanced and fall if not
properly supported by the lifting
device.
4-4
Primary Boom Extension Cylinder
The primary boom extension cylinder extends and
retracts the primary boom extension tube. The
primary boom extension cylinder is equipped with
counterbalance valves to prevent movement in the
event of a hydraulic line failure.
How to Remove the Primary
Boom Extension Cylinder
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.
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 Raise the primary boom to a horizontal
position.
2 Extend the primary boom until the primary
boom extension cylinder rod-end pivot pin is
accessible in the primary boom extension
tube.