Genie Z-30/20N Service Manual

Also see for Z-30/20N: Maintenance manual Maintenance manual Service manual Service and repair manual Service manual

Contents

Genie Z-30/20N Service Manual Manual pdf 94 page image

4 - 44 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N Part No. 139378June 2011Section 4 • Repair ProceduresREV ASteer Axle Components9-1Hub and BearingsHow to Remove theHub and Bearings1 Loosen the wheel lug nuts. Do not removethem.2 Block the non-steer wheels and place a liftingjack under the steer axle.3 Raise the machine. Place blocks underthe drive chassis for support.4 Remove the lug nuts. Remove the tireand wheel assembly.5 Remove the dust cap, cotter pin andcastle nut.Note: Always use a new cotter pin when installing acastle nut.6 Pull the hub off the yoke spindle. The washerand outer bearing should fall loose from thehub.7 Place the hub on a flat surface and gently prythe grease seal out of the hub. Remove theinner bearing.Note: When removing a bearing, always use a newinner bearing seal.How to Install the Huband BearingsNote: When replacing a wheel bearing, both theinner and outer bearings, including the pressed-inraces, must be replaced.1 Be sure that both bearings are packedwith clean, fresh grease.2 Place the large inner bearing into the rear of thehub.3 Install a new bearing grease seal into the hubby pressing it evenly into the hub until it is flush.Note: Always replace the bearing grease sealwhen removing the hub.4 Slide the hub onto the yoke spindle.Component damage hazard. Donot apply excessive force ordamage to the lip of the seal mayoccur.5 Fill the hub cavity with clean, fresh grease.6 Place the outer bearing into the hub.7 Install the washer and castle nut.8 Tighten the castle nut to 158 ft-lbs / 214 Nmto seat the bearings.Note: Rotate the hub by hand while torquing thecastle nut to make sure the bearings seat properly.9 Loosen the castle nut one full turn and thentorque to 35 ft-lbs / 47 Nm.10 Install a new cotter pin. Bend the cotter pin tolock it in place.Note: Always use a new cotter pin when installing acastle nut.11 Install the dust cap, then the tire and wheelassembly.12 Lower the machine and remove the blocks.13 Torque the wheel lug nuts to specification. Referto Section 2,Specifications.