Service and Repair Manual
September 2016
Platform Components
22
Z-34/22 IC
Part No. 1274592
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 t o R emove t he Pl atf orm Lev eling Slav e C ylinder
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
Extend the boom until the slave cylinder
barrel-end pivot pin is accessible.
2
Raise the boom slightly and place blocks
under the platform for support. Lower the
boom until the platform is resting on the
blocks.
3
Remove the pin retainer fastener from the
rod-end pivot pin.
4
Remove the external snap ring from the
barrel-end pivot pin.
5
Use a soft metal drift to remove the rod-end
pivot pin.
6
Use a soft metal drift to remove the barrel-end
pivot pin.
7
Carefully pull the cylinder out of the boom.
8
Tag and disconnect the hydraulic hoses from
the slave cylinder and connect them
togetherwith a connector. 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.
How t o Bleed t he Lev eling Slav e Cyli nder
How to Bleed the Slave Cylinder
1
Raise the jib boom to a horizontal position.
2
Move the platform level toggle switch up and
down through two platform leveling cycles to
remove any air that might be in the system.
Содержание Genie Z-34/22 IC
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