Self-repair of the brake system For such an important element as the brake system, there can not be too much control! If you check in every now and then to see if everything is in order, then...
The principle of operation of the brakes When you press the brake pedal, a rod connected to the pedal presses two pistons located one behind the other in the brake master cylinder (located in the...
Checking the brake mechanisms Permanent check To begin, apply full braking to «pedestrian speed». On the track on the road, you will see, even with ABS, whether the brakes work evenly....
Brake fluid This yellowish - and, by the way, poisonous and aggressive towards auto varnish - liquid does not corrode rubber and metal parts. It remains quite fluid even...
Checking the brake fluid level Permanent check Although the indicator on the dashboard will warn you about a too low brake fluid level in the Audi-100, you still cannot refuse visual...
Brake Fluid Replacement MOT No. 35 The change of the brake fluid is made necessary not only by the already mentioned risk of the formation of air bubbles, but also by the risk of...
Disc brakes Together with the front wheel, a steel disk rotates in the air stream. It is covered in the form of a saddle by the so-called disc brake caliper. When you...
Measuring the thickness of disc brake pads Brake pads of disc mechanisms, which are large enough for the front wheels, can withstand up to 50,000 km. Despite this, do not forget about regular visual...
Monitoring the condition of brake discs MOT No. 17 If the wheels are removed to check the condition of the pads, then the condition of the brake discs should also be checked at the same time. Discs...
Replacing disc brake pads In principle, both pads must be replaced on the right or left. Only pads with «General approval for operation» (in German «Allgemeine Betriebserlaubnis» —...
Drum brake mechanism On front-wheel drive Audi-100 models with 4-cylinder engines produced before October 92. (not equipped with ABS), on the rear axle are drum brakes. On this...
Measuring the brake pads of the drum mechanism MOT No. 18 Raise the car from behind. Remove the plastic cap on the inside of the relevant wheel at the rear of the drum brake shield. Shine a flashlight into...
Checking the brake pedal travel MOT No. 29 Press the brake pedal with your hand. The free play should be a maximum of ⅓ of the total pedal travel. A longer pedal free play indicates that the...
Rear wheel disc brake With the exception of the non-ABS 4-cylinder front-wheel drive model built before 12/92, the rear axle has disc brakes instead of drum brakes. This is, as in...
Measuring rear disc brake pad thickness TO №2 On rear disc brakes, pad wear is monitored in the same way as on the front. The wear limit here is 7 mm - with the thickness of the carrier plate, while...
Parking brake system Activating the parking brake lever moves a rigid link under the vehicle floor forward. At its end is a rocker - a balancing bracket. Brake cables are attached...
Checking the free play of the parking brake lever MOT No. 31 The parking brake action should begin at the third locking slot on the lever. With the fourth tooth fixed, the rear wheels should be blocked. If the...
Master brake cylinder The master brake cylinder is a kind of «boss» in the brake system. It is located at the rear left in the engine compartment and gives the brake calipers or...
Brake booster Disc brakes are not self-reinforcing like drum brakes. Significantly higher braking force is required. Therefore, the Audi-100 is equipped with a pneumatic...
Checking the brake booster MOT No. 30 The engine must be off. Press the brake pedal 10 times. Keep the brake pedal now fully depressed and start the engine. With a working brake booster,...
Brake force regulator Vehicles without ride height control In the Audi-100, the brake force regulator is located along the left in front of the rear axle. It can reduce the fluid...
Hydraulic brake repair Adviсe Brake fluid is poisonous. Therefore, it should not get into the mouth. Brake fluid is corrosive to bodywork Do not place brake fluid-soaked rags or...
Bleeding the brake system Bleeding the brake system is necessary after repairing the hydraulic drive of the brake system, when air has entered the brake cylinder or pipeline: Attention:...
ABS is not a panacea! ABS can't do any miracles when braking, as drivers often think; so that a significant reduction in braking distance does not occur under all conditions....
Functions of the main elements of the brake system Hydraulic block It is located in the engine compartment on the left rear: the hydraulic unit is located between the brake lines from the master brake cylinder...
ABS faults If the ABS is disabled, the ABS indicator will illuminate on the instrument panel. If during this time the engine was turned off and then started again, the...