Chevrolet Sonic Repair Manual: Drum Brake Adjusting Hardware Inspection

Chevrolet Sonic Repair Manual / Chassis / Brakes / Drum Brakes / Drum Brake Adjusting Hardware Inspection

Warning:

Refer to Brake Dust Warning.

Visually inspect the adjuster actuator spring (1) for the following conditions:

Excessive stretching
Excessive bending
Excessive corrosion
Broken
Missing

If any of the conditions listed were found, the adjuster actuator spring requires replacement.

Visually inspect the adjuster actuator lever (2) for the following conditions:

Bent
Broken
The lever engagement surface excessively worn
Excessively bent or broken spring attachment tab
Missing

If any of the conditions listed were found, the adjuster actuator lever requires replacement.

Visually inspect the adjuster assembly (3) for the following conditions:

Bent
Broken
Seized adjuster wheel threads
Excessively worn, damaged, or missing teeth

If any of the conditions listed were found, the adjuster assembly requires replacement.

Brake Drum Surface and Wear Inspection

Special Tools CH-8001 Dial Indicator Set For equivalent regional tools, refer to Special Tools. Warning: Refer to Brake Dust Warning. With the brake drum removed, clean the brake sh ...

Drum Brake Adjusting Hardware Replacement (J93, J94)

Removal Procedure Warning: Refer to Brake Dust Warning. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the tire and wheel assembly. Re ...

Other materials:

Brake Pressure Modulator Valve Bracket Replacement
Removal Procedure Remove the brake pressure modulator valve (BPMV) and bracket assembly. Refer to Brake Pressure Modulator Valve Replacement. Remove the BPMV bolts (1). Remove the BPMV bracket. Installation Procedure Install the BPMV br ...

Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure Use soft bristle wire brush to clean any carbon build-up from the valve head. DO NOT use a wire brush on any part of the valve stem. The valve stem is chrome plated to provide enhanced wear characteristics. Wire brushing the stem could remove the chr ...

Thrust Washer and Bearing Cleaning and Inspection
Warning: Wear safety glasses to avoid injury when using compressed air or any cleaning solvent. Bodily injury may occur if fumes are inhaled or if skin is exposed to chemicals. Caution: Do not allow the bearings to spin. Turn them slowly by hand. Spinning the beari ...

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