Wheel Hub: Service and Repair

NOTE:
On 1984 Models except Charger, Horizon, Omni and Turismo there are two designs or types of front knuckle/hub bearings used, tapered roller or ball bearing design. It is possible to have either or both types of bearings on same vehicle. No functional problems result from a mixed bearing condition, however, a service problem may arise as a result of different characteristics of these bearings.

If there is movement noted on one or both wheels but no bearing noise, measure movement at wheel outer rim diameter with a dial gauge. The maximum allowable movement on a 13 inch wheel at the rim lip is 0.020 inch, on a 14 inch wheel 0.023 inch and 0.025 inch on a 15 inch wheel. Do not replace bearings for looseness if movement is as specified. Also do not over torque the axle retaining nut beyond 180 ft. lbs. to minimize bearing freeplay.

Fig. 14 Hub removal:

REMOVAL
1. Remove steering knuckle as described under "Steering Knuckle, Replace."
2. Remove hub from bearing using tool No. C-4811 or equivalent. Back out three bearing attaching screws from knuckle until hub is unseated. Also install adapter screw into rear attaching screw threads and place thrust button inside hub bore.
3. Remove three screws and bearing retainer from knuckle.
4. Pry bearing seal from machined recess in knuckle.
5. Press bearing out of knuckle using tool No. C-4811 or equivalent.




INSTALLATION
1. Press new bearing into knuckle using tool No. C-4811 or equivalent.
2. On 1982 - 83 models, install brake dust shield.
3. On all models, install new seal and bearing retainer. Torque retainer screws to 20 ft. lbs. (27 Nm).
4. Press hub into bearing using tool No. C-4811 or equivalent.
5. Install new bearing seal using tool No. C-4698 or equivalent.