Suburban 4WD V8-6.0L (2007)
10. Mount a dial indicator, J 45101, 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 in) from the outer edge of the rotor.
11. Measure and record the assembled LRO of the brake rotor.
1. Rotate the rotor until the lowest reading is displayed on the indicator dial, then set the dial to zero.
2. Rotate the rotor until the highest reading is displayed on the dial.
3. Mark the location of the high spot relative to the nearest wheel stud, or studs.
4. Measure and record the amount of LRO.
12. Compare the brake rotor assembled LRO to the following specifications:
Brake rotor maximum allowable assembled lateral runout: 0.13 mm (0.005 in)
Brake rotor maximum allowable assembled lateral runout: 0.25 mm (0.010 in)
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, J 45101, 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 in) from the outer edge of the rotor.
15. Measure and record the assembled LRO of the brake rotor.
1. Rotate the rotor until the lowest reading is displayed on the indicator dial, then set the dial to zero.
2. Rotate the rotor until the highest reading is displayed on the dial.
3. Mark the location of the high spot relative to the nearest wheel stud, or studs.
4. Measure and record the amount of LRO.
16. Compare the brake rotor assembled LRO to the following specification:
Brake rotor maximum allowable assembled lateral runout: 0.13 mm (0.005 in)
Brake rotor maximum allowable assembled lateral runout: 0.25 mm (0.010 in)
17. If the brake rotor assembled LRO measurement exceeds the specification, bring the LRO to within specifications. Refer to Brake Rotor Assembled
Lateral Runout Correction. See: Brake Rotor Assembled Lateral Runout Correction
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 J 45101-100 and the lug nuts.
Brake Rotor Surface and Wear Inspection
Brake Rotor Surface and Wear Inspection
Caution: Refer to Brake Dust Caution.
1. If the inboard friction surface of the brake rotor is not accessible, reposition and support the caliper with the brake pads. Refer to Front Disc Brake
Pads Replacement and/or Rear Disc Brake Pads Replacement.
2. Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.
3. Inspect the friction surfaces of the brake rotor for the following Braking Surface Conditions:
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Heavy rust and/or pitting
Light surface rust can be removed with an abrasive disc. Heavy surface rust and/or pitting must be removed by refinishing the rotor.
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Cracks and/or heat spots
