Platform Components; Platform Leveling Slave Cylinder - Genie S-65 XC Service And Repair Manual

Service and Repair Manual

Platform Components

2-1

Platform Leveling Slave Cylinder

The slave cylinder and the rotator pivot are thetwo
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 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.
3 Lower the 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.
34
4 Remove the pin retaining fastener from the
slave cylinder rod-end pivot pin. Use a soft
metal drift to drive the rod-end pivot pin out.
5 Remove the external snap rings from the
barrel-end pivot pin.
6 Use a soft metal drift to drive the barrel-end
pivot pin out.
7 Carefully pull the cylinder out of the boom to
access the hydraulic hoses.
8 Tag, disconnect and plug the hydraulic hoses
from the slave cylinder. Cap the fittings on the
cylinder.
How to Bleed the Slave Cylinder
Note: Do not start the engine. Use auxiliary power
for this procedure.
1 Simultaneously activate the boom up function
and the platform level up function until the
boom is fully raised.
2 Simultaneously activate the boom down
function and the platform level down function
until the boom is fully lowered.
® ™ ® ™
S -60 XC • S -65 XC
September 2018
Crushing hazard. S-65 and S-65
TRAX: The jib boom could fall
when the slave cylinder rod-end
pivot pin is removed if not
properly supported.
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.
Part No. 1288652GT