May 2018 Service and Repair ManualScissor ComponentsPart No. 1272219 GS™-2669 RT • GS™-3369 RT • GS™-4069 RT 333-5Lift CylindersThe lift cylinders are single acting hydrauliccylinders. The GS-2669 and GS-3369 uses one liftcylinder; the GS-4069 uses two. Each lift cylinder isequipped with a check valve to prevent movementin the event of a hydraulic line failure.How to Remove the Lift CylinderGS-2669 RT and GS-3369 RT:Bodily injury hazard. Thisprocedure requires specific repairskills, lifting equipment and asuitable workshop. Attemptingthis procedure without these skillsand tools could result in death orserious injury and significantcomponent damage. Dealerservice is strongly recommended.Note: When removing a hose assembly or fitting,the O-ring (if equipped) on the fitting and/or hoseend must be replaced. All connections must betorqued to specification during installation. Refer toSpecifications, Hydraulic Hose and Fitting TorqueSpecifications.1 Remove the platform. Refer to RepairProcedure, How to Remove the Platform.2 Disassemble the scissor assembly. Refer toRepair Procedure for your model, How toDisassemble the Scissor Assembly.GS-2669 RT and GS-3369 RT1 solenoid valve (proportional lift models)2 solenoid valve (2 speed lift models)3 lift cylinder4 pressure switch (AS/CE models)
