Genie GS-2668 RT, Service Manual

Page: 82 / 184

Section 4 • Repair Procedures
REV B
June 2007
4 - 20 GS-2668 RT • GS-3268 RT Part No. 112657
SCISSOR COMPONENTS
3-4
Lift Cylinder(s)
The lift cylinders are single acting hydraulic
cylinders. The GS-2668 RT uses one lift cylinder;
the GS-3268 RT uses two. Each lift cylinder is
equipped with a check valve to prevent movement
in the event of a hydraulic line failure.
How to Remove the Lift Cylinder
GS-2668 RT:
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.
Note: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose must be
replaced and then torqued to specification during
installation. Refer to Section 2,
Hydraulic Hose and
Fitting Torque Specifications.
1 Raise the platform approximately 10 feet / 3 m.
2 Lift the safety arm, move to the center of the
scissor arm and rotate down to a vertical
position.
GS-2668 RT
a platform down solenoid valve
b lift cylinder
c pressure switch (CE models)
3 Lower the platform onto the safety arm.
Crushing hazard. Keep hands
clear of the safety arm when
lowering the platform.
4 Tag and disconnect the wiring from the solenoid
valve at the barrel end of the lift cylinder.
5 Tag, disconnect and plug the hydraulic hose
from the lift cylinder. Cap the fitting 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.
c a
Y7
A I
Note: 'alphanumeric' callouts
refer to corresponding notes
on the electrical schematic
AK
Note: 'alpha' callouts refer
to corresponding notes on
the hydraulic schematic
b
Y10