Part No. 75861 Genie Z-60/34 4 - 7November 2003 Section 4 • Repair ProceduresREV A2-1Platform Leveling Slave CylinderThe slave cylinder and the rotator pivot are thetwo primary supports for the platform. The slavecylinder keeps the platform level through theentire range of boom motion. It operates in aclosed-circuit hydraulic loop with the mastercylinder. The slave cylinder is equipped withcounterbalance valves to prevent movement inthe event of a hydraulic line failure.How to Remove the PlatformLeveling Slave CylinderBefore cylinder removal isconsidered, bleed the slavecylinder to be sure there is noair in the closed loop.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 Adjust the platform to a level position.2 Raise the jib boom slightly and place blocksunder the platform for support.3 Lower 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.Platform Components4 Tag, disconnect and plug the hydraulic hosesfrom the slave cylinder and connect the hosestogether using a connector. Cap the fittings onthe cylinder.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.5 Remove the pin retaining fasteners from theslave cylinder rod-end pivot pin. Do not removethe pin.6 Remove the pin retaining fastener from theslave cylinder barrel-end pivot pin. Do notremove the pin.7 Support the slave cylinder with a lifting device.Protect the cylinder rod from damage.8 Use a soft metal drift to drive the rod-end pivotpin out.Crushing hazard. The platform willfall when the slave cylinder rod-end pivot pin is removed if notproperly supported.Component damage hazard. Theslave cylinder rod may becomedamaged if it is allowed to fall ifnot properly supported by thelifting device.9 Use a soft metal drift and drive the barrel-endpin out.10 Carefully pull the cylinder out of the primaryboom.
