Section 4 • Repair ProceduresPart No. 227656 GR-20J • GR-26J 4 - 27September 2016Hydraulic Pump6-1Function PumpThe hydraulic pump is attached to the motor whichmakes up the hydraulic power unit.How to Test the Function PumpSee 7-2,How to Adjust the System Relief Valve.How to Remove the FunctionPumpNote: 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.Note: Perform this procedure with the machine instowed position.1 Disconnect the battery pack from the machine.2 Open and remove the turntable cover at thehydraulic power unit side of the machine.3 Tag and disconnect the wire harnessconnectors from the function manifold.4 Tag and disconnect the cables from the motor.bdcaeIllustration 1a motorb function manifoldc hydraulic tankd connector fittingse hydraulic hoses
