Scissor Assembly, Gs-3390 - Genie GS-3390 Service Manual

July 2007
REV D
3-1
Scissor Assembly , GS-3390
How to Disassemble the

Scissor Assembly, GS-3390

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 required.
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 Two, Hydraulic Hose
and Fitting Torque Specifications .
1 Remove the platform. See 2-1, How to Remove
the Platform.
2 Remove the cables from the platform centering
link (index #1) at the hydraulic tank side of the
machine.
3 Remove the pin retaining fasteners from the lift
cylinder rod-end pivot pin (index #12). Do not
remove the pin.
4 Attach a lifting strap from an overhead crane to
the lifting eye at the rod end of the lift cylinder.
Part No. 72863
5 Use a soft metal drift to remove the lift cylinder
rod-end pivot pin (index #12). Lower the rod
end of the lift cylinder down onto the number 2
inner arm (index #6).
6 Tag, disconnect and plug the hydraulic hoses
from the lift cylinder. Cap the fittings on the
cylinder.
7 Cut the zip ties attaching the hydraulic hoses to
the lift cylinder. Lay the hoses out of the way.
8 Remove the cables from the number 2 inner
arm (index #6) and lay the cables off to the
side.
9 Remove the pin retaining fasteners from the
cable tray pivot pin at the number 3 inner arm
(index #2).
GS-3390 • GS-4390 • GS-5390
Section 4 • Repair Procedures
SCISSOR COMPONENTS
Crushing hazard. The lift cylinder
could fall when the lift cylinder rod-
end pivot pin is removed if not
properly supported by the
overhead crane.
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.
Component damage hazard.
Hoses can be damaged if they are
kinked or pinched.
Component damage hazard.
Cables can be damaged if they
are kinked or pinched.
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