Extension Cylinders - Genie S-60 Service Manual

Third Edition • First Printing
5 Tag, disconnect and plug the boom lift 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.
6 Remove the pin retaining fastener from the
boom lift cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin, and lower the lift
cylinder onto the blocks. Protect the cylinder
rod from damage.
Crushing hazard. The boom lift
cylinder could become unbalanced
and fall when it is disconnected
from the machine if it is not
properly supported by the crane.
7 Remove the mounting fasteners from the barrel-
end cylinder pin retaining plates.
8 With the lift cylinder being supported by the
overhead crane, pull the cylinder toward the
platform and remove it from the machine.
Crushing hazard. The lift cylinder
may become unbalanced and fall
if it is not properly supported.
Component damage hazard. The
cables and hydraulic hoses can be
damaged if the lift cylinder is
pulled across them.
Part No. 65196
4-4

Extension Cylinders

The extension cylinder consists of two cylinders
that are fastened together. The first cylinder
extends and retracts the number 2 boom tube. The
second cylinder extends and retracts the number 3
boom tube.The extension cylinders are equipped
with counterbalance valves to prevent movement
in the event of a hydraulic line failure.
How to Remove the
Extension Cylinders
1 Extend the boom until the extension cylinder
rod-end pivot pin is accessible in the number 3
boom tube.
2 Raise the boom to a horizontal position.
Genie S-60 & Genie S-65
Section 7 • Repair Procedures
BOOM COMPONENTS
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.
When removing a hose assembly
or fitting, the O-ring on the fitting
and/or hose end must be replaced
and then torqued to specification
during installation.
Refer to Section Two, Hydraulic
Hose and Fitting Torque
Specifications.
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