Platform Leveling Cylinder; How To Remove The Platform Leveling Cylinder - Genie Z-80/60 Service And Repair Manual

September 2016
2-1
Platform
How to Remove the Platform
1 Separate the foot switch quick disconnect
plug.
2 Support the platform with an appropriate lifting
device.
3 Locate the cables that connect to the bottom of
the control box. Number each cable and its
location at the platform control box.
4 Disconnect the cables from the bottom of the
platform control box.
5 Remove the platform control box mounting
fasteners. Remove the platform control box
and set it aside.
6 Remove the air line to platform bracket
retaining fasteners (if equipped).
7 Remove the weld cable from the platform (if
equipped).
8 Remove the platform mounting fasteners and
remove the platform from the machine.
Crushing hazard. The platform
mounting weldment may
become unbalanced and fall if it
is not properly supported.
Part No. 1268556
Platform Components
2-2

Platform Leveling Cylinder

The platform leveling cylinder keeps the platform
level through the entire range of boom motion. The
platform is maintained level to the turntable. To
accomplish this, the ECM at the ground controls
compares the difference in readings between the
platform angle sensor and the turntable level
sensor, which then sends a signal to the platform
controls to open or close the appropriate platform
level proportional valve on the platform manifold to
maintain a level platform. The platform leveling
cylinder is equipped with counterbalance valves to
prevent movement in the event of a hydraulic line
failure.
How to R emove the Pl atfor m Leveling C yli nder
How to Remove the Platform
Leveling Cylinder
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 Extend the boom until the platform leveling
cylinder barrel-end pivot pin is accessible.
2 Raise the jib boom slightly and place blocks
under the platform.
3 Lower the jib boom until the platform is resting
on the blocks just enough to support the
platform.
Note: Do not rest the entire weight of the boom on
the blocks.
Service and Repair Manual
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