March 2018
Service and Repair Manual
Platform Components
Part No. 1269074GT
S®-
80 • S®
-85
• S®
-80X
25
2-2
Platform Leveling 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 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.
How to R emove the Pl atform Leveling Slave C ylinder
1 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 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.
Crushing hazard. The jib boom
could fall when the slave cylinder
rod-end pivot pin is removed if
not properly supported.
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 primary
boom to access the hydraulic hoses.
8 Tag, disconnect and plug the hydraulic hoses
from the slave cylinder. 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 to Bleed the Sl ave Cylinder
How to Bleed the Slave Cylinder
Note: Do not start the engine. Use auxiliary power
for all machine functions in this procedure.
1 Raise the 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.
Summary of Contents for Genie S-80
Page 14: ......
Page 73: ...March 2018 Service and Repair Manual Manifolds Part No 1269074GT S 80 S 85 S 80X 59 ...
Page 83: ...March 2018 Service and Repair Manual Manifolds Part No 1269074GT S 80 S 85 S 80X 69 ...
Page 141: ...March 2018 Service and Repair Manual 127 Continental TME27 Engine Harness ...
Page 144: ...Service and Repair Manual March 2018 130 S 80X Ground Control Box Wiring Diagram ...
Page 145: ...March 2018 Service and Repair Manual 131 Deutz TD2 9 L4 Engine Harness ...
Page 148: ...Service and Repair Manual March 2018 134 Perkins 404F 22T Engine Harness ...
Page 285: ...March 2018 Service and Repair Manual 271 Continental Options Schematic ...
Page 288: ...Service and Repair Manual March 2018 274 Deutz and Perkins Options Schematic ...
Page 289: ...March 2018 Service and Repair Manual 275 Platform Level Cutout CTE Option ...
Page 292: ...Service and Repair Manual March 2018 278 12 kW Hydraulic Generator Wiring Diagram ...
Page 293: ...March 2018 Service and Repair Manual 279 12 kW Hydraulic Generator Electrical Schematic ...
Page 296: ...Service and Repair Manual March 2018 282 Belt Driven Generator Option ...
Page 297: ...March 2018 Service and Repair Manual 283 Hydraulic Schematic 2WD Models ...
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