September 2016 Service and Repair ManualPlatform ComponentsPart No. 1268548 Z-45/25 • Z-45/25J 292-1Platform Leveling Slave CylinderThe slave cylinder and the rotator pivot are the twoprimary supports for the platform. The slavecylinder keeps the platform level through the entirerange of boom motion. It operates in aclosed-circuit hydraulic loop with the mastercylinder. The slave cylinder is equipped withcounterbalance valves to prevent movement in theevent of a hydraulic line failure.How to Remove the PlatformLeveling Slave CylinderNote: Before cylinder removal is considered, bleedthe slave cylinder to be sure there is no air in theclosed loop.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 Z-45/25J: Extend the primary boom until theslave cylinder barrel-end pivot pin isaccessible.2 Raise the primary boom slightly and placeblocks under the platform for support.3 Lower the primary boom until the platform isresting on the blocks just enough to supportthe platform.Note: Do not rest the entire weight of the boom onthe blocks.4 Tag, disconnect and plug the hydraulic hosesfrom the slave cylinder at the unions andconnect them together using a connector.Connect the hoses from the cylinder togetherusing a connector.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 fastener from theslave cylinder rod-end pivot pin. Do notremove the pin.6 Z-45/25J: Remove the external snap ringsfrom the slave cylinder barrel-end pivot pin. Donot remove the pin.Z-45/25: Remove the pin retaining fastenerfrom the slave cylinder barrel-end pivot pin. Donot remove the pin.7 Place a block under the slave cylinder forsupport. Protect the cylinder rod from damage.8 Z-45/25: Support the platform rotator with asuitable lifting device.9 Use a soft metal drift to drive the rod-end pivotpin out.Crushing hazard. The platformcould fall when the slave cylinderrod-end pivot pin is removed ifnot properly supported.Component damage hazard.The slave cylinder rod maybecome damaged if it is allowedto fall if not properly supportedby the lifting device.10 Use a soft metal drift and drive the barrel-endpin out.11 Carefully pull the cylinder out of the primaryboom.
