STS AWD V8-4.6L VIN A (2006)
10. Mount a dial indicator, J45101, or equivalent, to the steering knuckle and position the indicator button so it contacts the brake rotor friction
surface at a 90 degree angle, approximately 13 mm (0.5 inch) from the outer edge of the rotor.
11. Measure and record the assembled LRO of the brake rotor.
0. Rotate the rotor until the lowest reading is displayed on the indicator dial, then set the dial to zero.
1. Rotate the rotor until the highest reading is displayed on the dial.
2. Mark the location of the high spot relative to the nearest wheel stud, or studs.
3. Measure and record the amount of LRO.
12. Compare the brake rotor assembled LRO to the following specification:
^
Front brake rotor maximum allowable assembled lateral runout: 0.05 mm (0.002 inch)
^
Rear brake rotor maximum allowable assembled lateral runout: 0.05 mm (0.002 inch)
13. If the brake rotor assembled LRO is within specifications, proceed to step 18. If the brake rotor assembled LRO exceeds the specification, refinish
the rotor to ensure true parallelism, refer to Brake Rotor Refinishing. After refinishing the rotor, proceed to step 14.
14. Mount a dial indicator, J45101, or equivalent, to the steering knuckle and position the indicator button so it contacts the brake rotor friction
surface at a 90 degree angle, approximately 13 mm (0.5 inch) from the outer edge of the rotor.
15. Measure and record the assembled LRO of the brake rotor.
0. Rotate the rotor until the lowest reading is displayed on the indicator dial, then set the dial to zero.
1. Rotate the rotor until the highest reading is displayed on the dial.
2. Mark the location of the high spot relative to the nearest wheel stud, or studs.
3. Measure and record the amount of LRO.
16. Compare the brake rotor assembled LRO to the following specification:
^
Front brake rotor maximum allowable assembled lateral runout: 0.05 mm (0.002 inch)
^
Rear brake rotor maximum allowable assembled lateral runout: 0.05 mm (0.002 inch)
17. If the brake rotor assembled LRO measurement exceeds the specification, bring the LRO to within specifications.
18. If the brake rotor assembled LRO measurement is within specification, install the brake caliper and depress the brake pedal several times to secure
the rotor in place before removing the J45101-100 and the lug nuts.
Brake Rotor Refinishing
Brake Rotor Refinishing
Tools Required
^
J41013 Rotor Resurfacing Kit
^
J42450-A Wheel Hub Resurfacing Kit
Caution: Refer to Brake Dust Caution in Service Precautions.
Important;
^
The disc brake rotors do not require refinishing as part of routine brake system service. New disc brake rotors do not require refinishing.Do not
refinish disc brake rotors in an attempt to correct the following conditions:
-
Brake system noise - squeal, growl, groan
-
Uneven and/or premature disc brake pad wear
-
Superficial or cosmetic corrosion/rust of the disc brake rotor friction surface
-
Scoring of the disc brake rotor friction surface less than the maximum allowable specification
