Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
- Brakes
   Independent work on brake system
   So the brake system works
   Check of brakes
   Brake liquid
   Check of level of brake liquid
   Check of brake system on tightness and existence of damages
   Replacement of brake liquid
   Disk brakes
   Measurement of thickness of overlays of forward disk brakes
   Check of a condition of brake disks
   Replacement of overlays of disk brakes
   Back disk brakes
   Measurement of overlays of back disk brakes
   Hand brake
   Check of idling of the lever of the hand brake
   Main brake cylinder
   Brake amplifier
   Check of the brake amplifier
   Works on hydraulics of brake system
   Pumping of brake system
   The help at malfunctions
   ABS and EDS
   What does ABS?
   Function of separate knots
   Electronic system of distribution of brake effort (EBV)
   Violations in ABS system work
   Electronic blocking of differential (EDS)
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

The help at malfunctions

Its reasons
Your help
A.Tormoza delay one party 1. Pressure in tires the unequal
2. Drawing of a protector is erased non-uniformly
3. Are polluted, "glazed over" or slips are non-uniformly erased
4. Directing slips in a brake support are polluted or rusted
5. Prirzhaveli pistons in brake supports or in wheel brake cylinders
6. Brake disks are strongly scratched or too thin
7. Brake hoses inflated from within
Level at cold tires
Change tires


Restore a free wheeling or replace

Replace brake disks

Replace hoses

V.Tormoza squeal 1. Those slips are established not
2. A dust or dirt on disk brakes or in drum-type brakes
3. See. And 4–6
Establish original slips
Dismantle slips (block), remove a dust and dirt
S.Tormoza roar 1. In a brake disk a dent
2. The brake disk is strongly scratched
D. One or all brakes of wheels strongly heat up 1. The compensating opening in the main brake cylinder got littered
2. There is no gap between a brake pedal (press a rod) and pistons of the main brake cylinder
3. Brake supports rusted
4. The hand brake is not completely disconnected


Repair in a workshop
Check brake cables and brakes of back wheels

E.Slishkom a big reserve of a course of a pedal, a pedal is wrung out softly and springs

1. Air in brake system
2. The brake system is not tight
3. The main brake cylinder is faulty
4. At strong load of brakes steam vials in too old brake liquid are formed
5. See. And 5
Pump over brake system
Inspect system on tightness
Replace brake liquid
F. Bad effect of braking by strong pressing a pedal 1. Normal free wheeling of a pedal: were made oily or «застекленели» slips
2. Short free wheeling of a pedal: the brake amplifier is faulty
3. Long free wheeling of a pedal: one brake contour owing to tightness violation failed


Check, replace the damaged details

G. Unilateral or weak brake effect of the hand brake 1. See points in And
2. The brake cable rusted
3. The adjusting mechanism is faulty