4 - 30 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N Part No. 139378June 2011Section 4 • Repair ProceduresREV AHydraulic Pumps6-1Auxiliary and Function PumpHow to Remove the AuxiliaryPump or Function PumpNote: When removing a hose assembly or fitting,the O-ring on the fitting and/or hose end must bereplaced and then torqued to specification duringinstallation. Refer to Section 2,Hydraulic Hose andFitting Torque Specifications.1 Tag and disconnect the cables from the auxiliarypump.Electrocution/burn hazard. Contactwith electrically charged circuitscould result in death or seriousinjury. Remove all rings, watchesand other jewelry.2 Close the hydraulic shutoff valve located at thehydraulic tank.Component damage hazard. Themachine must not be operatedwith the hydraulic tank shutoffvalve in the closed position orcomponent damage will occur. Ifthe tank valve is closed, removethe key from the key switch andtag the machine to informpersonnel of the condition.3 Tag, disconnect and plug the hydraulic hosesfrom the pump. 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 to squirtor spray.4 Remove the pump mounting bolts from thepump. Carefully remove the pump from theelectric motor.
