Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Brake Rotor Thickness Measurement

Chevrolet Sonic Repair Manual / Chassis / Brakes / Disc Brakes / Brake Rotors / Brake Rotor Thickness Measurement

Warning:

Refer to Brake Dust Warning.

  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.


  2. Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.
  3. Using a micrometer (1) calibrated in thousandths-of-a-millimeter, or ten-thousandths-of-an-inch, measure and record the thickness of the brake rotor at four or more points, evenly spaced around the brake rotor.

    Make sure that the measurements are only taken within the friction surfaces and that the micrometer is positioned the same distance from the outer edge of the brake rotor, about 13 mm (1/2 in), for each measurement.

  4. Compare the lowest thickness measurement recorded to the specifications. Refer to Disc Brake Component Specifications.
  5. If the lowest thickness measurement of the brake rotor is above the minimum allowable thickness after refinishing specification, the brake 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 discard thickness specification, the brake rotor requires replacement.
Brake Rotor Surface and Wear Inspection
Warning: Refer to Brake Dust Warning. 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 Bra ...

Brake Rotor Thickness Variation Measurement
Warning: Refer to Brake Dust Warning. Note: Any disc brake rotor that exhibits thickness variation exceeding the maximum acceptable level must be refinished or replaced. Thickness variati ...

Other materials:

Sunroof Window Seal Replacement
Removal Procedure Remove the sunroof window panel. Refer to Sunroof Window Replacement. Remove the seal from the window panel frame by pulling the seal away at one point and continuing around the perimeter of the frame. Clean around the edge of the inside surf ...

Load Compartment (Hatchback)
The load compartment cover can be used to conceal objects under it or removed and placed on the bottom of the load compartment to carry larger loads. To remove the load compartment cover: Lift up on the load compartment cover and pull out. Store the load compartment cover on the bottom of ...

Fuel Tank Replacement
Removal Procedure Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Relieve the fuel pressure. Refer to Fuel Pressure Relief. Drain the fuel Tank. Refer to Fuel Tank Draining. Lift and support the vehicle. Refer to Lifti ...

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