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B8 (2007-2015) B7 (2004-2008) B6 (2000-2006) B6 (2000-2006, petrol) B5 (1994-2001) B5 (1994-2001, petrol)

General information about the brake system (Audi A4 B5)

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  • Audi A4
  • B5 (1994-2001)
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  • General information about the brake system
            0
1. The brake system is hydraulic, dual-circuit, with a vacuum servo drive. Each circuit controls the brakes of one front and one rear wheel from a tandem-type master brake cylinder. Under normal conditions, the circuits operate in unison. If a leak occurs in one of the circuits, the pressure in the second circuit is fully maintained.

2. All models are equipped with front and rear disc brakes. All models are equipped with anti-lock braking system ABS (in paragraph 18 the ABS system is described in detail).

3. Disc brakes are actuated by single-cylinder calipers with a "floating" bracket, creating equal pressure on both brake pads. The parking brake drive is on the rear wheels.

4. All models are equipped with an independent mechanical parking brake drive on the rear wheels.

5. Since diesel engines do not have a throttle valve, there is not enough vacuum in the intake manifold to operate the servo booster. To solve this problem, all models with diesel engines are equipped with a separate vacuum pump. The pump is mounted on the side of the cylinder block and is driven by an auxiliary shaft.

Note: When servicing any part of the system, proceed carefully and methodically, scrupulously maintaining cleanliness. If there is any doubt about the functionality of components, replace them. if necessary, as a set for one axle. Use genuine spare parts, or spare parts from well-known manufacturers. Please pay attention to the warnings. contained in the section "Safety first" and in this chapter, concerning the toxicity of asbestos dust and brake fluid.
The article was checked by auto expert Timur Bazhenov
This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

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Audi A4 B5: Brake system
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Brake system specifications
Hydraulic system — bleeding
Hydraulic tubes and hoses — replacement
Front brake pads — replacement
Rear brake pads — replacement


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