April 2016 Service ManualSteer Axle ComponentsPart No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N 919-1 Hub and Bearings, 2WDModelsHow to R emove the Hub and BearingsHow to Remove the Hub andBearings1 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 under thedrive chassis for support.4 Remove the lug nuts. Remove the tire andwheel assembly.5 Remove the dust cap, cotter pin and castlenut.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 Ins tall the H ub and BearingsHow to Install the Hub andBearingsNote: When replacing a wheel bearing, both theinner and outer bearings, including the pressed-inraces, must be replaced.1 Be sure that both bearings are packed withclean, fresh grease.2 Place the large inner bearing into the rear ofthe hub.3 Install a new bearing grease seal into the hubby pressing it evenly into the hub until it isflush.Note: Always replace the bearing grease seal whenremoving 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 Nm toseat the bearings.Note: Rotate the hub by hand while torquing thecastle nut to make sure the bearings seat properly.
