Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
6.1. Preliminary checks
6.2. Repair of brake system
6.3. Repair of brakes of forward wheels
6.4. System ABS
6.4.1. Instructions on carrying out of repair work with antiblocking system
6.4.2. Antiblocking system (ABS) Bosch 5.7
6.4.3. Removal and installation of the hydraulic block of management
6.4.4. Replacement of the block of management ABS
6.4.5. Removal and installation of the hydraulic block
6.4.6. Removal and installation of components of system ABS on a forward axis
6.4.7. Removal and installation of the gauge of frequency of rotation on a back axis
6.4.8. Removal and rotor installation on a back axis
6.4.9. Removal and rotor installation on a back axis
6.4.10. Removal and installation of the switch of stoplights
6.4.11. Removal and installation of the gauge of cross-section accelerations and the gauge of rotation round a vertical axis
6.4.12. Removal and installation of the gauge of pressure in brake system
6.5. Tables
7. An onboard electric equipment
8. A body
9. Electric equipment schemes
 




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6.4.3. Removal and installation of the hydraulic block of management

Fig. 6.68. The hydraulic block and highways of brake system: 1 – the main brake cylinder and the amplifier of brakes; 2–7 – brake pipelines; 8 – the gauge of brake pressure; 9 – the hydraulic block of management with the management block; 10 – клипса; 11 – the shock-absorber (4 pieces); 12 – the vacuum pump; 13 – the shock-absorber (1 piece); 14 – a bolt with шестигранной a head, 10 Нм (3 pieces); 15 – the holder



Installation site

Fig. 6.69. A site of the hydraulic block on the car


The hydraulic block of management is in a motor compartment at the left (fig. 6.69).

Removal
At cars with the coded radio tape recorder pay attention to the coding, if necessary make inquiry of a code.

ATTENTION
Перегибание highways of brake system it is not supposed.

Disconnect plugs from the storage battery.

Fig. 6.70. A tip unblocking


Unblock the tip from the management block in a direction of an arrow and disconnect it (fig. 6.70).
Insert the device for pressing of a pedal of a brake between a pedal of a brake and a seat of the driver. Press a pedal of a brake not less than on 60 mm.
Remove the device for pressing of a pedal of a brake only when all highways of brake system are again connected to the hydraulic block.

THE NOTE
Protect a motor compartment from a following brake liquid.

Turn off brake tubes from the hydraulic block.

Fig. 6.71. Removal of a tank from a cooling liquid


Unscrew the fixing screw 1 and take capacity forward in an arrow direction, a broad tank of a cooling liquid to remove aside (fig. 6.71)
The moment of an inhaling 6 Нм

Fig. 6.72. Highways of brake system


Close highways of brake system and carving apertures заглушками from ремкомплекта ET. – № 1H0 698 311 A (fig. 6.72)

THE NOTE
Take measures on protection of a water taking away box and a motor compartment against a following brake liquid.

Unscrew highways 1, 2 and 3.

THE NOTE
Since modelling year 2002, between highways the flexible hose is established, in earlier designs it is necessary to dismantle highways of brake system on the amplifier of brakes.


Fig. 6.73. Fastening of a highway of brake system to the brake cylinder


Turn off highways of brake system 1 and 2 and Close заглушками from ремкомплекта ET. – № 1H0 698 311 (fig. 6.73)
Disconnect sockets 1.

Fig. 6.74. An arm of a highway of brake system


Unblock highways of brake system from an arm 2 (fig. 6.74)
Unblock клипсу from below 1 and take in an arrow direction.

Fig. 6.75. Extraction of the hydraulic block


Take the hydraulic block of management (fig. 6.75)

Installation
At installation especially it is necessary to observe the following.
заглушки it is necessary to remove from the new hydraulic block of management only when the corresponding brake pipeline is established.
If to remove заглушки from the hydraulic block in advance the brake liquid can flow out. Ought filling and prorolling as a result cannot be guaranteed.
Pump over brake system.
Disconnect the storage battery.

The inhaling moments


6.4.2. Antiblocking system (ABS) Bosch 5.7

6.4.4. Replacement of the block of management ABS