Scissor Assembly, Gs-3390; How To Disassemble The Scissor Assembly - Terex GS90D-4695 Service And Repair Manual

December 2023
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Scissor Assembly, GS-3390

How to Dis ass embl e the Sciss or Assem bly
How to Disassemble the Scissor
Assembly
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 (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 Remove the platform. Refer to Repair
Procedure, 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.
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GS -3390 • GS -4390 • GS
™ ™
Service and Repair Manual
Scissor Components
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).
Crushing hazard. The lift
cylinder will fall if not properly
supported when the pivot pin is
removed.
Tag, disconnect and plug the hydraulic hoses
from the lift 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.
Cut the zip ties attaching the hydraulic hoses
to the lift cylinder. Lay the hoses out of the
way.
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
Remove the cables from the number 2 inner
arm (index #6) and lay the cables off to the
side.
Component damage hazard.
Cables can be damaged if they
are kinked or pinched.
Remove the pin retaining fasteners from the
cable tray pivot pin at the number 3 inner arm
(index #2).
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