REMOVE HUB ASSEMBLY Pry dust cap off with screwdriver. Straighten out tang washer. Remove spindle nut, tang washer and spindle washer. Pull hub toward you to loosen outer bearing. Do not let bearing fall. Pull the hub assem- bly off spindle. The inner bearing and seal will come with it. Pry out the inner seal and discard. The inner bearing will now come out. Caution- do not remove seal by hitting the inner bearing.
INSPECT BEARING RACES (CUPS) AND HUB Inspect races for pitting, rusting, frosting, scor- ing, metal flaking and other obvious damage. If damaged, remove with brass bar or mild steel bar. Inspect race seat and remove any burrs or nicks that prevent the race from seating cor- rectly. Replace races and bearings in sets.
INSTALL HUB ASSEMBLY Slide the hub over the spindle with care not to damage the seal or spindle threads.
Seat the hub against the seal journal. Insert the outer bearing, D-Shaped spindle washer, tang washer, and spindle nut.
CLEAN AND INSPECT THE SPINDLE Clean spindle with solvent to remove old grease. Inspect the spindle for nicks, scratch- es, scoring, damaged threads, or bending. File off nicks or burrs and smooth out with emory cloth. Apply thin film of bearing grease to spindle.
CLEAN AND INSPECT BEARINGS (CONES) Clean bearings with solvent and long bristled brush. Do NOT use air pressure to clean out old grease or to dry. Allow to air dry. Inspect bear- ings for pitting, rusting, frosting, scoring, metal flaking, cage damage or other obvious dam- age. Replace all damaged bearings and mating races in sets.
ADJUST BEARING Using a 12” wrench on the spindle nut apply 50ft-lb of torque at the same time the hub is rotated counterclockwise. Leave the hub sta- tionary while backing off the spindle nut to relieve the preload torque. Then hand tighten
the spindle nut to the first slot that lines up with a tang on the washer. Flatten the tang into the slot as far as it will go. Use caution that the tang is not fractured in this step. The correct adjustment for all bearings is .001 to .012 end play.
INSTALL RACE (CUP) Using a brass bar or a mild steel bar to drive in new race into hub until solidly seated against hub shoulder. Use caution to not damage race surfaces. Never use a bearing to drive a race.
INSTALL GREASE SEAL Install new seals when they leak or when bear- ings are being visually inspected. Install inner bearing in hub, then the seal. Make sure the seal is installed correct side in. Use soft wood to seat seal in flush with hub.
FILL WITH GREASE Apply nozzle of grease gun to the grease zerk at the end of the spindle. Pump grease into the assembly until it comes out around the spindle washer.
INSTALL DUST CAP Install dust cap with rubber plug. Care must be taken so that cap goes on evenly and is not crimped on inner lip. Cap is fully seated when rib on the cap is up against the hub all the way around. This prevents grease from being thrown out of hub onto the rim.