Part No. 75861 Genie Z-60/34 4 - 35November 2003 Section 4 • Repair ProceduresREV A Hydraulic Pumps7-1Lift/Steer PumpHow to Remove theLift/Steer PumpWhen 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 Remove the drain plug from the hydraulic tankand completely drain the tank into a suitablecontainer. See capacity specifications.2 Tag, disconnect and plug the lift/steer pumphydraulic hoses. Cap the fittings on the pump.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 pump mounting bolts. Carefullyremove the pump.Component damage hazard. Besure to fill the hydraulic tank tospecification and prime the pumpafter installing the pump.7-2Drive PumpThe drive pump is a bi-directional variabledisplacement piston pump. The pump output iscontrolled by the electronic displacement controller(EDC), located on the pump. The only adjustmentthat can be made to the pump is the neutral or nulladjustment. Any internal service to the pumpshould only be performed at an authorized Rexrothservice center. Call Genie Industries ServiceDepartment to locate your local authorized servicecenter.How to Remove the Drive PumpComponent damage hazard. Thework area and surfaces where thisprocedure will be performed mustbe clean and free of debris thatcould get into the hydraulic systemand cause severe componentdamage. Dealer service isrecommended.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 Disconnect the electrical connection at theelectronic displacement controller (EDC)located on the drive pump.
