Wheel Stud / Lug Nut: Service and Repair

CAUTION: If a wheel attaching stud needs to be replaced in the front hub, the stud cannot be hammered out of the hub flange. If the stud is removed by hammering it out of the hub flange, damage to the wheel bearing will occur, leading to premature bearing failure.

Use the following procedure to remove and install one stud on one wheel hub.

REMOVAL
1. Raise the vehicle.
2. Remove the front tire and wheel assembly.

Caliper Attaching Bolts:

3. Remove the 2 bolts attaching the disc brake caliper to the steering knuckle.

Brake Caliper Removal:

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

Correctly Supported Brake Caliper:

5. Support the disc brake caliper using a wire hook, not by the hydraulic flex hose.

Remove/Install Rotor:

6. Remove the brake rotor from the front hub.





7. Install a wheel mounting nut on the wheel stud being removed from the hub far enough so the threads on the stud are even with end of lug nut. Rotate the hub so the stud requiring removal is aligned with notch cast into front of steering knuckle. Install Remover, Special Tool C-4150, on hub flange and wheel stud.
8. Tighten the remover, pushing the wheel stud out the rear of the hub flange. When the shoulder of the stud is past the flange, remove the remover from the hub. Remove the nut from the stud, then remove the stud from the flange.

INSTALLATION

Installing Wheel Stud:

1. Install the stud in the flange of hub from the rear side. Install several washers and a wheel mounting nut on the stud. The wheel mounting nut must be installed with the flat side of the lug nut against the washers to eliminate binding.
2. Tighten the wheel mounting nut. This will pull the wheel stud into the flange of the hub. When the head of the stud is fully seated against the rear of the hub flange, remove the lug nut and washers from the stud.
3. Install the brake rotor on the front hub.

Disc Brake Caliper Installation:

4. Install the disc brake caliper on steering knuckle. The caliper is installed by first sliding the top of the caliper under the top abutment on the steering knuckle. Then install the bottom of the caliper against the bottom abutment on the steering knuckle.
5. Install the disc brake caliper to steering knuckle attaching bolts. Tighten the attaching bolts to a torque of 31 Nm (23 ft. lbs.).
6. Install the tire and wheel assembly. Install the wheel mounting nuts and torque them to 135 Nm (100 ft. lbs.).
7. Lower the vehicle.