300 SRT-8 V8-6.1L VIN W (2005)
Thickness variation in a rotor's braking surface can result in pedal pulsation, chatter and surge. This can also be caused by excessive runout in the
rotor or the hub.
Rotor thickness variation measurements should be made in conjunction with measuring runout. Measure thickness of the brake rotor (2) at 12 equal
points around the rotor braking surface with a micrometer (1) at a radius approximately 25 mm (1 inch) from edge of rotor. If thickness
measurements vary beyond the specification listed in the specification table the rotor should be refaced or replaced.
ROTOR RUNOUT
On-vehicle rotor runout is the combination of the individual runout of the hub face and the runout of the brake rotor (hub runout can be measured
separately). To measure rotor runout on the vehicle:
1. Raise and support vehicle.
2. Remove tire and wheel assembly.
3. Install standard wheel mounting nuts, flat side to rotor, on all studs (2). Progressively tighten nuts to 150 Nm (110 ft. lbs.) torque.
4. Mount Dial Indicator (1), Special Tool C-3339A, with Wheel, Special Tool 25w, or equivalent, to knuckle. Position Dial Indicator Wheel to
contact rotor braking surface approximately ten millimeters from outer edge of rotor (3).
5. Slowly rotate brake rotor checking lateral runout, marking the low and high spots. Record these measurements.
6. Check and record runout of opposite side of rotor in same fashion, marking the low and high spots.
7. Compare runout measurement to specifications.