Wheel Stud / Lug Nut: Service and Repair

CAUTION: If a wheel mounting stud needs to be replaced in the hub and bearing assembly the studs CAN NOT be hammered out of the hub flange. If a stud is removed by hammering it out of the bearing flange, damage to the hub and bearing assembly will occur leading to premature bearing failure.

NOTES:
- The following procedure and special tools shown MUST be used when replacing wheel attaching studs.

- The hub and bearing assembly does not require removal from the steering knuckle to replace wheel attaching studs in the hub and bearing assembly.

REMOVE
1. Raise vehicle on jackstands or centered on a frame contact type hoist.
2. Remove the front wheel and tire assembly from the vehicle.





3. Remove front disc brake caliper to steering knuckle attaching bolts.





4. Remove disc brake caliper assembly from steering knuckle. Caliper is removed by first lifting bottom of caliper away from steering knuckle, and then removing top of caliper out from under. steering knuckle.





5. Support brake caliper/adapter assembly using a wire hook and not by hydraulic hose.





6. Remove the rotor from the front hub.





7. Install a lug nut on the wheel stud to be removed from the hub/bearing assembly, so threads on stud are even with end of lug nut. Rotate hub so stud requiring removal is aligned with notch cast into front of steering knuckle. Install Remover, Special Tool C-4150, or equivalent on hub and bearing assembly flange and wheel stud.
8. Tighten down on special tool, this will push the wheel stud out of the hub and bearing flange.





INSTALL
1. Install replacement wheel stud into flange of hub and bearing assembly. Install washers on wheel stud, then install a wheel lug nut on stud with flat side of lug nut against washers.
2. Tighten the wheel lug nut, pulling the wheel stud into the flange of the hub and bearing assembly. When the head of the stud is fully seated against the bearing flange, remove lug nut and washers from wheel stud.
3. Install the rotor back on the front hub/bearing.





4. Install disc brake caliper assembly on steering knuckle. Caliper is installed by first sliding top of caliper under top abutment on steering knuckle. Then installing bottom of caliper against bottom abutment of steering knuckle.
5. Install disc brake caliper assembly attaching bolts and torque to 31 Nm (23 ft. lbs.).
6. Install front wheel and tire assembly. and torque to 135 Nm (100 ft. lbs.).
7. Install wheel lug nuts. Tighten wheel mounting stud nuts in proper sequence until all nuts are torqued to half the specified torque. Then repeat the proper sequence, tightening the stud nuts to the specified torque of 135 Nm (100 ft. lbs.).
8. Lower vehicle.