Ford 2003 Mustang Workshop Manual page 107

Is the runout within specifications?
K8 CHECK FOR VIBRATION FROM THE FRONT OF THE
VEHICLE
WARNING: If only one drive wheel is allowed to
rotate, speed must be limited to 55 km/h (34 mph) using
the speedometer reading, since actual wheel speed will
be twice that indicated on the speedometer. Exceeding a
speed of 55 km/h (34 mph) or allowing the drive wheel to
hang unsupported can result in tire disintegration or
differential failure, which can cause serious personal
injury and extensive vehicle damage.
Spin the front wheel and tire assemblies with a wheel
balancer while the vehicle is raised on a hoist. Feel for
vibration in the front fender or while seated in the vehicle.
Is the vibration present?
K9 CHECK FOR VIBRATION FROM THE REAR OF THE
VEHICLE
WARNING: If only one drive wheel is allowed to
rotate, speed must be limited to 55 km/h (34 mph) using
the speedometer reading, since actual wheel speed will
be twice that indicated on the speedometer. Exceeding a
speed of 55 km/h (34 mph) or allowing the drive wheel to
hang unsupported can result in tire disintegration or
differential failure, which can cause serious personal
injury and extensive vehicle damage.
Chock the front wheels.
Raise and support the rear end of the vehicle so that the rear
wheel and tire assemblies can spin.
Engage the drivetrain and carefully accelerate the drive
wheels while checking for vibration.
Is the vibration present?
K10 CHECK THE DRIVETRAIN
WARNING: If only one drive wheel is allowed to
rotate, speed must be limited to 55 km/h (34 mph) using
the speedometer reading, since actual wheel speed will
be twice that indicated on the speedometer. Exceeding a
speed of 55 km/h (34 mph) or allowing the drive wheel to
hang unsupported can result in tire disintegration or
differential failure, which can cause serious personal
injury and extensive vehicle damage.
Remove the rear wheel and tire assemblies. Refer to the
persists,GO to K8 .
No
INSTALL a new wheel.
CHECK the runout on the
new wheel. If the new
wheel is within limits,
LOCATE and MARK the
low spot. INSTALL the
tire, matching the high
spot on the tire with the
low spot on the wheel.
BALANCE the assembly.
TEST the system for
normal operation. If the
condition persists, GO to
K8 .
Yes
SUBSTITUTE known
good wheel and tire
assemblies as necessary.
TEST the system for
normal operation.
No
GO to K9 .
Yes
GO to K10 .
No
TEST the system for
normal operation.
Yes
CHECK/TEST the
drivetrain and driveline
components. TEST the
system for normal
operation.
No
SUBSTITUTE known
good wheel and tire