Terex Genie Z-45/25 Bi-Energy, Service And Repair Manual

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July 2021 Service and Repair Manual
Platform Components
Part No. 1312350GT Z ® -45/25 • Z ® -45/25J 23
2-1
Platform Leveling Slave Cylinder
The slave cylinder and the rotator pivot are the two
primary supports for the platform. The slave
cylinder keeps the platform level through the entire
range of boom motion. It operates in a closed-
circuit hydraulic loop with the master cylinder. The
slave cylinder is equipped with counterbalance
valves to prevent movement in the event of a
hydraulic line failure.
How to Remove the Platform
Leveling Slave Cylinder
Note: Before cylinder removal is considered, bleed
the slave cylinder to be sure there is no air in the
closed loop.
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
Z-45/25J:
Extend the primary boom until the
slave cylinder barrel-end pivot pin is
accessible.
2 Raise the primary boom slightly and place
blocks under the platform for support.
3 Lower the primary 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.
4 Tag, disconnect and plug the hydraulic hoses
from the slave cylinder at the unions and
connect them together using a connector.
Connect the hoses from the cylinder together
using a connector.
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.
5 Remove the pin retaining fastener from the
slave cylinder rod-end pivot pin. Do not
remove the pin.
6 Z-45/25J: Remove the external snap rings
from the slave cylinder barrel-end pivot pin.
Do not remove the pin.
Z-45/25: Remove the pin retaining fastener
from the slave cylinder barrel-end pivot pin.
Do not remove the pin.
7 Place a block under the slave cylinder for
support. Protect the cylinder rod from
damage.
8 Z-45/25: Support the platform rotator with a
suitable lifting device.