Genie Industries Z-30/20, Руководство по обслуживанию

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Part No. 43063 Genie Z-30/20 7 - 7
Service Manual - Third Edition Section 7 - Repair Procedures
Platform Components
2-1
Platform
How to Remove the Platform
1 Separate the foot switch wiring quick
disconnect plug from the platform toeboard.
If your machine is equipped with
an air line to platform option, the
air line must be disconnected from
the platform before removal.
2 Raise the platform and place sawhorses under
the platform for support.
3 Lower the platform onto the sawhorses.
Do not rest the entire weight of
the boom on the sawhorses, just
enough to support the platform.
4 Remove the platform mounting fasteners and
remove the platform.
During installation, be sure that
the lower casting is pushed up as
far as it will go onto the platform
pivot weldment so that there is no
space between the lower casting
and the platform pivot weldment.
Do not overtighten the platform
mounting fasteners during
installation.
2-2
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 primary boom motion. It operates
in a closed-circuit hydraulic loop with the master
cylinder. The slave cylinder is equipped with a
counterbalance valve to prevent movement in
the event of a hydraulic line failure.
How to Remove the Slave
Cylinder
Before cylinder removal is
considered, bleed the slave
cylinder to be sure there is no
air in the closed loop. See Repair
Procedure 2-2, How to Bleed the
Slave Cylinder.
1 Raise the boom slightly and place sawhorses
under the platform for support. Then lower the
boom until the platform is resting on the
sawhorses.
Do not rest the entire weight of
the boom on the sawhorses, just
enough to support the platform.
2 Tag, disconnect and plug the hydraulic hoses
from the slave cylinder and connect them
together with 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.
3 Remove the pin retaining fastener from
the rod-end pin.
4 Remove the pin retaining fastener from
the barrel-end pin.