Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
6.1. Preliminary checks
6.2. Repair of the brake system
6.3. Repair of brakes of forward wheels
6.4. ABS system
6.4.1. Instructions on carrying out repair work with anti-blocking system
6.4.2. Anti-blocking system (ABS) Bosch 5.7
6.4.3. Removal and installation of the hydraulic control unit
6.4.4. Replacement of the ABS control unit
6.4.5. Removal and installation of the hydraulic block
6.4.6. Removal and installation of components of the ABS system on a forward axis
6.4.7. Removal and installation of the sensor of frequency of rotation on a back axis
6.4.8. Removal and installation of a rotor on a back axis
6.4.9. Removal and installation of a rotor on a back axis
6.4.10. Removal and installation of the switch of stoplights
6.4.11. Removal and installation of the sensor of cross accelerations and the sensor of rotation around a vertical axis
6.4.12. Removal and installation of the sensor of pressure in the brake system
6.5. Tables
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







6-4-2-antiblokirovochnaya-sistema-abs-bosch-5-7.html

6.4.2. Anti-blocking system (ABS) Bosch 5.7

As the additional equipment for front-wheel cars the automatic anti-lock of brakes (ASR) is offered.

Fig. 6.67. Hydraulic control unit


The brake system with ABS is double-circuit and diagonal. Strengthening in the brake system is carried out by means of the vacuum amplifier (fig. 6.67).
The hydraulic block and the control unit form one device. Therefore it is called the hydraulic control unit.
Thanks to direct connection of the called components the number of sources of mistakes decreases. Preventive repair of the hydraulic control unit is carried out by a replacement method.
The screws connecting separate knots of the hydraulic control unit are not allowed to be unscrewed.


6.4.1. Instructions on carrying out repair work with anti-blocking system

6.4.3. Removal and installation of the hydraulic control unit