Audi A4, S4

since 2000 of release

Repair and car operation

Audi A4, S4
+ Introduction
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Engine
+ Systems of cooling, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
- Brake system
   Air removal from brake system
   Removal and installation of forward brake shoes
   Removal and installation of blocks of brake mechanisms of back wheels
   Check of thickness of a brake disk
   Removal and installation of a brake disk/support
   Adjustment of the parking brake
   Removal and installation of the switch of a stoplight
   Removal and installation of a brake hose
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Removal and installation of blocks of brake mechanisms of back wheels

By means of an illustration find out execution of the support established on your car.

Brake mechanisms of back wheels С38

1 — the Bolt, 35Нм
Being self-stopped, surely replace. At an otvorachivaniye and an inhaling it is necessary to hold directing fingers from a provorachivaniye.
2 — Brake shoes. All 4 blocks of one axis are surely replaced
3 — the Bolt with a gear fillet, 75Нм. Surely replace
4 — Directing complete with directing fingers and a protective cover. It is delivered as the spare part with greasing.

In the presence of damages of protective covers establish a repair kit. Use an enclosed package with greasing for greasing of directing fingers
5 — the Bolt with a gear fillet, 75Нм. Surely replace
6 — the Brake disk. Both brake disks of one axis are surely replaced. For removal previously remove a support
7 — the support Case. For replacement of a brake shoe the hose is not disconnected

Support С38

There are various executions of back brakes. Therefore previously, by means of an illustration, find out, what execution is applied on your car.


Operation of lifting and car installation on supports is connected with danger! Therefore before carrying out operation familiarize with Poddomkrachivaniye's Section and towage.


    Lift and establish the car on supports.
    Mark on the tire the direction of its rotation. Unscrew bolts of fastening of a wheel. Lift and establish on supports a forward part of the car and remove a wheel.

Surely observe indications of the Section In case of emergency.

If brake shoes are established again, it is necessary to mark them at removal. Change by places of external and internal brake shoes, and also their shift with right on the left wheel is not allowed. Replace all brake shoes of forward wheels even if the limit of wear was reached by a brake shoe of one party.

    Turn out bolts of fastening of the case of a support. Thus hold directing fingers from a provorachivaniye.
    Remove the case of a support and take out brake shoes.


At the removed brake shoes do not press a brake pedal, otherwise the piston it can be squeezed out from the case. In this case it is necessary to remove a support and the piston in a set and to hand over them in repair on HUNDRED.


    Press the piston into the case.

At all do not press on the piston by means of the ordinary adaptation or the hammer handle, the mechanism of adjustment of the parking brake can be thus damaged.

    For an otvorachivaniye establish the special AUDI-3272 adaptation so that its fillet adjoined to a support. Turn the handle to the left against the stop. A spindle turn to the right and turn out the piston.
    If the special adaptation available is not present, запилите as appropriate a metal level and insert it into both grooves of the piston. Turn the piston with effort in the opposite direction.

At piston turn brake liquid is squeezed out from the brake cylinder in the tank. Watch liquid level in the tank, if necessary, suck away it.

To an otsasyvaniye of brake liquid apply a plastic bottle which is intended only for this purpose. Do not apply for this purpose a bottle to drinking liquid! Brake liquid is poisonous and should not be sucked away by a mouth through a hose at all. Apply for this purpose a siphon. At replacement of brake shoes level of brake liquid in the tank should not exceed MAX mark since liquid when heating extends. Following liquid gets on the main brake cylinder, destroys its covering and brings corrosion.

To cleaning of brakes apply only alcohol. Directing surface and a seat of blocks in mine of the case clear a rag. At all do not apply for this purpose the tool with sharp edges.

    Establish brake shoes into place.
    Establish the case of a support and fix it new being self-stopped bolts the moment 35Нм.

In a repair kit there are being self-stopped bolts which it is necessary to establish.

    Observing the rotation direction, fix wheels. Lower the car on wheels and only after that tighten fastening bolts cross-wise the moment 120Нм.

Several times, standing strongly press a pedal of a brake so that to feel resistance. Thus brake shoes adjoin to a disk and occupy the working situation.

    Check brake liquid in the tank, if necessary, add liquid to MAX mark. Carefully let's be earned extra to new brake shoes. For this purpose several times brake the car since speed 80 to 40 km/h, slightly pressing a brake pedal. Between braking let's to brakes be cooled.

After installation of its new brake shoe it is necessary to earn extra. For this purpose the first 200 km of a way do not apply without need sharp braking.

Support С43 with automatic installation

There are back brakes various executions. Therefore previously establish by means of an illustration, what execution has your car.

In the present section differences in relation to back brake С38 are considered only. All instructions on security measures remain.



    Fix a brake disk one bolt of fastening of a wheel.
    Unscrew bolts from the support case, using for deduction a wrench.
    Release the lever of the parking brake. Take out on the holder a lock washer (1) cable of a drive of a brake and disconnect a cable at a support.
    Remove the case of a support and adhere it a wire to a suspension bracket so that the brake hose was not tense or damaged.
    Take out brake shoes.
    Remove directing brackets.



    Screw the piston rotation clockwise by means of the special adaptation 3272. Operation demands the effort appendix.
    Establish into place lock springs of blocks.
    Establish into place brake shoes. Watch that brake shoes sat on the basic surfaces.
    Establish into place the case of a support and tighten new bolts of fastening the moment 35Нм.

Establish 4 being self-stopped bolts which are available in a repair kit. Watch that the brake hose was not braided.

    Connect a cable of the parking brake to a support and fix a lock washer.
    Adjust the parking brake, address to the Section Adjustment of the parking brake.