Part No. 102521 Genie S-40 and Genie S-45 4 - 11January 2005 Section 4 • Repair ProceduresREV A3-2Jib Boom Lift CylinderHow to Remove the Jib BoomLift CylinderPerform this procedure with theboom in the stowed position.When removing a hose assemblyor fitting, the O-ring on the fittingand/or hose end must be replacedand then torqued to specificationduring installation.Refer to Section 2,Hydraulic Hoseand Fitting Torque Specifications.1 Raise the jib boom slightly and place blocksunder the platform mounting weldment. Thenlower the jib boom until the platform is restingon the blocks just enough to support theplatform.Do not rest the entire weight of theboom on the blocks.2 Tag, disconnect and plug the jib boom liftcylinder hydraulic hoses. Cap the fittings on thecylinder.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil tosquirt or spray.3 Remove the pin retaining fasteners from the jibboom lift cylinder rod-end pivot pin. Do notremove the pin.4 Use a soft metal drift to tap the jib boom liftcylinder rod-end pivot pin half way out. Thenlower one of the leveling arms to the ground.Tap the pin the other direction and lower theopposite leveling arm. Do not remove the pin.5 Support the jib boom lift cylinder with a liftingdevice.6 Remove the pin retaining fastener from the jibboom lift cylinder barrel-end pivot pin. Use asoft metal drift to remove the barrel-end pin andlet the cylinder hang down.Crushing hazard. The platformand jib boom could becomeunbalanced and fall when the jibboom barrel-end pivot pin isremoved if not properly supported.7 Attach a lifting strap from an overhead crane tothe lug on the rod end of the jib boom liftcylinder.8 Use a soft metal drift to remove the jib boom liftcylinder rod-end pin. Remove the cylinder fromthe machine.Crushing hazard. The jib boom liftcylinder could become unbalancedand fall when removed from themachine if not properly attached tothe overhead crane.JIB BOOM COMPONENTS, S-45
