September 2016 Service and Repair ManualTurntable Rotation ComponentsPart No. 1268556 1159-1Turntable Rotation AssemblyHow to Remove a TurntableRotation AssemblyNote: 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.Note: Perform this procedure with the primary boombetween the circle-end tires and with the machineon a firm, level surface.1 Secure the turntable from rotating with theturntable rotation lock pin.2 Remove the ground controls side fixedturntable cover.3 Tag, disconnect the hydraulic hoses from theturntable rotation motor. Cap the fittings on themotor.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.4 Attach a lifting strap from an overhead crane orother suitable lifting device to the lifting eye onthe turntable rotation assembly.5 Remove the drive hub mounting bolts andremove the turntable rotation assembly fromthe machine.6 Repeat steps 3 through 5 for the otherturntable rotation assembly.Tip-over hazard. If the turntablerotation lock pin is not properlyinstalled, machine stability iscompromised and the machinecould tip over when the drive hubis removed from the machine,which could result in death orserious injury.Crushing hazard. The drive hubcould become unbalanced andfall if not properly supported by anoverhead crane or lifting devicewhen removed from the machine.Note: When installing a turntable rotation assembly,the rotation gear backlash must be adjusted. Referto Repair Procedure, Adjust the Turntable RotationGear Backlash.
