February 2017 Service ManualTurntable Rotation ComponentsPart No. 1259369GT S-80 • S-85 • S-80X 1375 Clean up any oil that may have spilled.1 motor2 drive hub mounting bolts3 drive hub with brakeHow to Adj ust the Tur ntabl e R otati on Gear BacklashHow to Adjust the TurntableRotation Gear BacklashThe turntable rotation drive hub is mounted on anadjustable plate that controls the gap between therotation motor pinion gear and the turntable bearingring gear.Note: Perform this procedure with the boombetween the non-steer end tires and with themachine on a firm and level surface.1 Secure the turntable from rotating with theturntable rotation lock pin.Note: The turntable rotation lock pin is located nextto the boom rest pad.2 Loosen the backlash pivot plate mountingfasteners.1 backlash pivot plate2 adjustment bolt with lock nut3 backlash pivot plate mounting bolts
