Chevrolet Sonic Repair Manual: Brake Rotor Thickness Measurement
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 Brake Pads Replacement.
- Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.
- 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.
- Compare the lowest thickness measurement recorded to the specifications. Refer to Disc Brake Component Specifications.
- 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.
- 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:
Roadside Assistance Program
For U.S.-purchased vehicles, call 1-800-243-8872; (Text Telephone (TTY): 1-888-889-2438).
For Canadian-purchased vehicles, call 1-800-268-6800.
Service is available 24 hours a day, 365 days a year.
Calling for Assistance
When calling Roadside Assistance, have the following information ready:
...
Instrument Panel Fuse Block Access Hole Cover Replacement (With AAL)
Instrument Panel Fuse Block Access Hole Cover Replacement
Callout
Component Name
1
Instrument Panel Fuse Block Access Hole Cover
Procedure
Grasp the lower edge of the fuse block cover and pull outward disengaging ...
Transmission Disassemble (Gen 2)
Special Tools
3-9506289 Universal Adapter
R-0007758 Holding Fixture
S-9407198 Differential Bearing Race Wrench
For equivalent regional tools, refer to Special Tools.
Attach R-0007758 holding fixture (2) to the transmission.
Attach R-0007758 holding fixture (2 ...
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