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Diagnosis and Testing > < Front Drive Halfshafts - 2.0L Duratec-RS (Zetec)
Brake System - General Information - Brake System—2.0L Duratec-RS (Zetec) Focus RS 2003 (09/2002-)
Description and Operation

NOTE:
NOTE:Brake friction materials inherently generate noise and heat in order to dissipate energy. As a result, occasional squeal is possible. This condition may be amplified by severe operating conditions, such as cold, heat, rain, snow, salt and mud.

The braking system is of a diagonally split, dual circuit design featuring front and rear disc brakes.

The hydraulic system has separate circuits for each pair of diagonally opposed wheels (left front, right rear and right front, left rear). The front brake caliper is of a four piston (dual opposed) design and the rear caliper is of a single piston, floating caliper design.

The anti-lock brake system (ABS) is controlled by the hydraulic control unit (HCU), incorporated within the hydraulic system, and only operates when the wheel speed sensors detect the onset of wheel lock up.

The parking brake control operates the rear brakes through a cable system. The parking brake cable features automatic adjustment using a pawl and piston rotating adjustment screw on the rear brake caliper.

The brake master cylinder is of a tandem design and is linked to a brake booster which reduces the brake pedal effort. The tandem design will make sure that in the event of one brake circuit failing the other will remain fully operational.

The brake master cylinder and brake booster are located on the same side as the steering wheel. The brake booster actuating rod is connected directly to the brake pedal.

Diagnosis and Testing > < Front Drive Halfshafts - 2.0L Duratec-RS (Zetec)