Platform Leveling Master Cylinder - Genie Z-60/34 Service Manual

November 2003
REV A
4-5
Platform Leveling Master
Cylinder
The master cylinder acts as a pump for the slave
cylinder. It is part of the closed circuit hydraulic
loop that keeps the platform level through the
entire range of boom motion. The master cylinder
is located inside the upper mid-pivot at the base of
the primary boom.
Bodily injury hazard. 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.
Perform this procedure with the
boom in the stowed position.
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.
1 Remove the pin retaining fasteners from the
master cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin.
Part No. 75861
2 Raise the secondary boom until the upper
mid-pivot is above the turntable covers.
3 Attach the lifting strap from an overhead crane
to the platform end of the lower secondary
boom arm for support. Do not lift.
4 Tag, disconnect and plug the hydraulic hoses
from the master cylinder. Cap the fittings on the
cylinder.
Genie Z-60/34
Section 4 • Repair Procedures
PRIMARY BOOM COMPONENTS
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.
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