XL-7 2WD V6-3.6L (2007)
Brake Rotor/Disc: Testing and Inspection
Rear
Brake Rotor Thickness Measurement
Brake Rotor Thickness Measurement
WARNING: 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.
2. Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.
3. Using a micrometer calibrated in thousandths-of-a-millimeter, or ten-thousandths-of-an-inch, measure and record the lowest thickness of the brake
rotor at 4 or more points, equally spaced around the rotor. Ensure that the measurements are only taken within the friction surfaces and that the
micrometer is positioned the same distance from the outside edge of the rotor, about 13 mm (½ in), for each measurement.
4. Compare the lowest thickness measurement recorded to the following specifications:
Specification - Front
Brake rotor discard thickness: 27.4 mm (1.079 in)
Specification - Rear
Brake rotor discard thickness: 18.4 mm (0.724 in)
5. If the lowest thickness measurement of the brake rotor is above the minimum allowable thickness after refinishing specification, the rotor may be
able to be refinished, depending upon surface and wear conditions which may be present.
6. If the lowest thickness measurement of the brake rotor is at or below the minimum allowable thickness after refinishing specification, the rotor may
not be refinished.
7. If the lowest thickness measurement of the brake rotor is at or below the discard thickness specification, the rotor requires replacement.
Brake Rotor Thickness Variation Measurement
Brake Rotor Thickness Variation Measurement
WARNING: Refer to [Brake Dust Caution].
NOTE: Any disc brake rotor that exhibits thickness variation exceeding the maximum acceptable level must be refinished or replaced. Thickness
variation exceeding the maximum acceptable level can cause brake pulsation.
1. If the inboard friction surface of the brake rotor is not accessible, reposition and support the caliper with the brake pads.
2. Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.