Part No. 88619 Z-80/60 3 - 53June 2012 Section 3 • Scheduled Maintenance ProceduresREV ED-3Check the Turntable RotationBearing BoltsMaintaining proper torque on the turntable bearingbolts is essential to safe machine operation.Improper bolt torque could result in an unsafeoperating condition and component damage.1 Raise the secondary boom approximately8 feet / 2.4 m.2 Remove the engine tray retaining fastener.Swing the engine tray out away from themachine.a engine tray anchor holeb engine tray retaining fastener3 Locate the engine tray anchor hole at the pivotend of the engine tray.adcb11 Manually rotate each steer wheel.Result: Each steer wheel should rotate withminimum effort.12 Re-engage the drive hubs by turning overthe drive hub disconnect caps. Rotate eachwheel to check for engagement. Lift themachine and remove the blocks.Collision hazard. Failure tore-engage the drive hubs couldresult in death or serious injuryand property damage.All models:13 Be sure the free-wheel valve on the drive pumpis closed (clockwise).Note: The free-wheel valve is located on the drivepump, and should always remain closed.a drive pumpb screwdriverc lift pumpd free-wheel valveCHECKLIST D PROCEDURES
