Part No. 34032 Genie S-80 & Genie S-85 7 - 31Service Manual - First Edition Section 7 - Repair ProceduresHydraulic Pumpsopen closed9-1Lift/Steer PumpHow to Remove theLift/Steer Pump1 Close the two hydraulic tank valves located atthe hydraulic tank.Component damage hazard. Theengine must not be started withthe hydraulic tank shutoff valvesin the CLOSED position orcomponent damage will occur.If the tank valves are closed,remove the key from the keyswitch and tag the machine toinform personnel of the condition.2 Disconnect and plug the lift/steer pumphydraulic hoses. Cap the fittings.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.Be sure to open the two hydraulictank valves and prime the pumpafter installing the pump.9-2Drive 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 authorizedSundstrand-Sauer service center. Call GenieIndustries Service Department to locate your localauthorized service center.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 hydraulicsystem and cause severecomponent damage. Dealerservice is recommended.1 Disconnect the electrical connection at theelectronic displacement controller (EDC)located on the drive pump.2 Close the two hydraulic tank valves located atthe hydraulic tank.Component damage hazard. Theengine must not be started withthe hydraulic tank shutoff valvesin the CLOSED position orcomponent damage will occur. Ifthe tank valves are closed,remove the key from the keyswitch and tag the machine toinform personnel of the condition.open closed
