Part No. 48412 Genie S-60 & Genie S-65 7 - 25Service Manual - Second Edition Section 7 - Repair Procedures4-5Platform LevelingMaster CylinderThe master cylinder acts as a pump for the slavecylinder. It’s part of the closed circuit hydraulic loopthat keeps the platform level through the entirerange of boom motion. The master cylinder islocated at the base of the boom.How to Remove the PlatformLeveling Master CylinderWhen 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 Two, HydraulicHose and Fitting TorqueSpecifications.1 Raise the boom until the rod-end pivot pin isaccessible.2 Remove the turntable end cover to access themaster cylinder.3 Tag, disconnect and plug the master cylinderhydraulic 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.4 Remove the pin retaining fasteners from themaster cylinder barrel-end pivot pin.5 Place a rod through the barel-end pivot pin andtwist to remove the pin.6 Attach a lifting strap from an overhead crane tothe lug on the rod end of the master cylinder.7 Remove the pin retaining fastener from the rod-end pivot pin.8 Use a soft metal drift to remove the pin.Crushing hazard. The mastercylinder may become unbalancedand fall if it is not properlysupported by the lifting device.BOOM COMPONENTS800-610-4101ActionRental.com
