Wheels, Distorted
Inspect for Wheel DamageNOTE: Loose lug nuts can cause shimmy and vibration and may also distort the stud holes in the wheels. Lug nuts that are too loose or tight will contribute to brake roughness.
Inspect the lug nuts and tighten to 115-142 N.m (85-104 lb-ft).
Make sure wheels and hub are clean. Stones wedged between the wheel and rotor or lumps of mud and grease can unbalance the wheel.
Check for wheel damage. Wobble or shimmy caused by a damaged wheel will eventually damage the bearings. Inspect the rims for dents that could leak air.
Inspect the front hubs and bearings whenever the hubs are removed, or at regular inspection intervals.
Install Wheel
1. Clean all dirt and corrosion from the hub mounting surface, the wheel mounting surfaces and center pilot hole of the wheel. Apply a thin film of Silicon Dielectric Compound D7AZ-19A331-A or equivalent meeting Ford specification ESE-M1C171-A to the axle pilot flange to prevent corrosion.
2. Place wheel on the hub. Install the lug nuts. Tighten them alternately to draw the wheel evenly against the hub.
3. Lower vehicle. Use a torque wrench or torque stick and tighten the lug nuts to 115-142 N.m (85-104 lb-ft).