Ford 2003 Mustang Workshop Manual page 124

SECTION 100-04: Noise, Vibration and Harshness
GENERAL PROCEDURES
Wheel Bearing Check
1. WARNING: The electrical power to the air suspension system must be shut off prior
to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by
turning off the air suspension switch. Failure to do so can result in unexpected inflation
or deflation of the air springs, which can result in shifting of the vehicle during these
operations.
Raise the vehicle until the front tires are off the floor.
Make sure the wheels are in a straight forward position.
2. NOTE: Make sure the wheel rotates freely and that the brake pads are retraced sufficiently to
allow free movement of the tire and wheel assembly.
Spin the tire by hand to check the wheel bearings for roughness.
3. Grip each front tire at the top and bottom and move the wheel inward and outward while lifting
the weight of the tire off the front wheel bearing.
4. If the tire and wheel (hub) is loose on the spindle, does not rotate freely, or has a rough feeling
when spun, carry out one of the following:
1. On vehicles with inner and outer bearings, inspect the bearings and cups for wear or
damage. Adjust or install new bearings and cups as necessary.
2. On vehicles with one sealed bearing, install a new wheel hub.
2003 Mustang Workshop Manual