Chevrolet Sonic Repair Manual: Disc Brake System Description and Operation

Chevrolet Sonic Repair Manual / Chassis / Brakes / Disc Brakes / Disc Brake System Description and Operation

System Component Description

The disc brake system consists of the following components:

Disc Brake Pads: Applies mechanical output force from the hydraulic brake calipers to friction surfaces of brake rotors.
Disc Brake Rotors: Uses mechanical output force applied to friction surfaces from the disc brake pads to slow speed of tire and wheel assembly rotation.
Disc Brake Pad Hardware: Secures disc brake pads firmly in proper relationship to the hydraulic brake calipers. Enables a sliding motion of brake pads when mechanical output force is applied.
Disc Brake Caliper Hardware: Provides mounting for hydraulic brake caliper and secures the caliper firmly in proper relationship to caliper bracket. Enables a sliding motion of the brake caliper to the brake pads when mechanical output force is applied.

System Operation: Mechanical output force is applied from the hydraulic brake caliper pistons to the inner brake pads. As the pistons press the inner brake pads outward, the caliper housings draw the outer brake pads inward. This allows the output force to be equally distributed. The brake pads apply the output force to the friction surfaces on both sides of the brake rotors, which slows the rotation of the tire and wheel assemblies. The correct function of both the brake pad and brake caliper hardware is essential for even distribution of braking force.

Front Brake Rotor Replacement

Special Tools CH-41013 Rotor Resurfacing Kit CH-42450-A Wheel Hub Resurfacing Kit For equivalent regional tools, refer to Special Tools. Removal Procedure Warning: Refer to Bra ...

Other materials:

Rear Wiper Blade Replacement
1. Pull the wiper arm a short distance away from the glass (1). 2. Pull the blade out from the arm (2). It may require extra effort to remove the old blade. 3. Once the blade pin disengages from the wiper arm, remove the wiper blade by sliding the pin out of the guide hole. 4. Reverse the ...

Tire Pressure
Tires need the correct amount of air pressure to operate effectively. Caution Neither tire underinflation nor overinflation is good. Underinflated tires, or tires that do not have enough air, can result in: . Tire overloading and overheating which could lead to a blowout. . Premature or ir ...

Drive Range, First Gear Engine Braking (Gen 2)
Note: Some models of the 6T30/40/45/50 automatic transmission are equipped with an electric auxiliary fluid pump for use in hybrid vehicles (BAS+). Hybrid vehicles do not require internal combustion engine (ICE) operation at all times. After a successful engine start, the hybrid powertrain con ...

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