Section 4 • Repair Procedures4 - 64 S-80 • S-85 • S-80X Part No. 122985February 2012a backlash pivot plateb adjustment bolt with lock nutc backlash pivot plate mounting bolts5 Remove the backlash pivot plate mountingbolts. Carefully remove the drive hub assemblyfrom the machine.Crushing hazard. The turntablerotation drive hub assembly couldbecome unbalanced and fall whenit is removed from the machine ifnot properly supported.When installing the drive hub assembly:6 Install the drive hub. Apply removable threadlocking compound to fastener threads.Torquethe backlash pivot plate mounting fasteners tospecification. Refer to Section 2,MachineTorque Specifications.7 Install the brake and then the motor onto thedrive hub. Apply removable thread lockingcompound to fastener threads.Torque themotor/brake mounting fasteners tospecification. Refer to Section 2,MachineTorque Specifications.8 Adjust turntable rotation gear backlash.See 10-1,How to Adjust the Turntable RotationGear Backlash.10-1Turntable Rotation Drive HubAssemblyHow to Remove the TurntableRotation Drive Hub AssemblyNote: When removing a hose assembly or fitting,the O-ring (if equipped) on the fitting and/or thehose end must be replaced. All connections mustbe torqued to specification during installation.Refer to Section 2,Hydraulic Hose and FittingTorque Specifications.1 Secure the turntable from rotating with theturntable rotation lock pin.2 Tag, disconnect and plug the hydraulic hosesfrom the drive 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.3 Loosen the backlash pivot plate and adjustmentbolts.4 Attach a suitable lifting device to the lifting eyeson the drive hub assembly.Turntable Rotation Componentsunlocked lockedAB acb
