Audi A4

Since 1994 of release

Repair and car operation



Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
- Suspension bracket of wheels and steering
   Running gear
   Check of cuffs of the steering mechanism
   Check of dustproof caps and backlash in heads of cross-section steering draught
   Check of dustproof caps of hinges of an axis
   Check люфта a steering wheel
   Check клинового a belt
   Check of level of oil
   Check of a backlash of the wheel bearing
   Shock-absorbers
   Check of shock-absorbers
   The help at malfunctions
   Adjustment of wheels
   Measurement of adjustment of wheels
   The help at malfunctions
   Independent works on a running gear and a steering
   Dismantling of a suspension bracket of forward wheels
   Works with the back bridge
   Shock-absorber replacement behind
   Steering
   Works on a steering
   Tightness check сервоуправления
   Poliklinovoj belt
   The help at malfunctions
   Adjustment of the steering mechanism
   Pump dismantle сервоуправления
   Filling and system prorolling сервоуправления
   Safety pillow
   Safety instructions
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics



Shock-absorber replacement behind

The image of separate details of a back amortisation rack in assembly sequence in Audi with a forward drive

1 – a cap;
2 – шнуровое a ring;
3 – a lock nut;
4 – тарельчатая a washer;
5 – a basic ring;
6 – пенопластовая a lining;
7 – the top plate of a spring;
8 – the top overlay of a spring;
9 – распорная a tube;
10 – a basic ring;

11 – a washer;
12 – a ring;
13 – the rubber shock-absorber;
14 – a reception ring of a harmonic (15);
16 – a protective cap;
17 – a spring;
18 – a lining;
19 – the bottom lining of a spring;
20 – газонаполненный the shock-absorber.


Assembly position of the top plate of a spring and cap in front-wheel Audi (a back suspension bracket)

And – an axis of an eye of the shock-absorber (below);
In – position of hairpins with a carving;

With – a cap axis;
a – size of a corner 45 .

Here separate details of a back amortisation rack in Audi A4 quattro are represented in assembly sequence

1 – a support of an amortisation rack;
2 – самоконтрящаяся a nut;
3 – демпфирующее a ring;
4 – a spring;

5 – a bolt;
6 – the shock-absorber case
21 – size of angular displacement of the top fastening in relation to the bottom fastening of the shock-absorber.

At the left: the nave cap can be wrung out if to establish a stupid chisel between camber of a cap of a nave and a nave.

On the right: the press washer (1) under an adjusting nut (2) should move a screw-driver if the backlash of the wheel bearing is correctly established. Thus it is impossible to lean клинком screw-drivers about a brake disk.

Back suspension bracket Audi A4 quattro

At the left: the arrow specifies in the bottom screw connection of an amortisation rack on cross-section steering draught.

On the right: here figures designate fixing bolts of an amortisation rack / a wheel niche (1, 2, 4, 5), and also the top fastening of the shock-absorber (3).

Before replacement of shock-absorbers it is necessary to establish, what is established a running gear. Only after that it is possible to order the necessary shock-absorbers. It can be found out on a label with the information on the car at the bottom of a luggage carrier or in dredging for a spare wheel.

Symbols:

  • ВА – serial model
  • ВЕ – a sports running gear

The shock-absorber separates from the dismantled amortisation rack by means of the spring tension device. Such tension devices are on sale in shop of the accompanying goods. It is important to know that the fixing eye of the shock-absorber should be under a certain corner to the top fastening of an amortisation rack. Workshop Audi applies the spring tension device to its correct installation with an angular scale. Without this device it is necessary to use a scent and a goniometer.

Dismantle of back shock-absorbers

Cars with a forward drive

Along with new shock-absorbers use also new самоконтрящуюся a nut for the top fastening of the shock-absorber:

 PERFORMANCE ORDER

  1. Dismantle an amortisation rack and clamp it in a vice for the bottom fixing eye. Do not clamp it in the field of external diameter, differently it will be pressed through.
  2. Establish the tension device on coils of a spring and slightly compress a spring.
  3. That the tension device has not slid off, paste over corresponding coils of a spring with a sticky tape.
  4. Wring out a protective cap, ослабьте above on a connecting bar of the stabilizer самоконтрящуюся a nut, thus wring out a bar in an opposite direction a key with internal шестигранником.
  5. After nut unscrewing remove details of the top support of an amortisation rack and combine them in sequence of dismantle.
  6. Remove from the shock-absorber a spring and auxiliary details.
  7. At assemblage pay attention that: the basis of a spring and a lining are greased with talc and at assemblage are corrected in a direction of an eye of the shock-absorber.
  8. Establish still compressed spring.
  9. The colour label on a spring is turned downwards to a spring plate.
  10. At correct installation the bottom end of a spring adjoins to a lining emphasis.
  11. Assemblage of details in that order, as is shown in drawing above.
  12. Above the spring end also adjoins to the top dredging for a spring eye.
  13. Correct the shock-absorber and a spring plate above how it is shown in drawing above.
  14. Tighten a fixing nut above on 25 Nanometers.
  15. If it is necessary, move on the end of a spring a spring lining below and a lining on an emphasis.
  16. Slowly ослабьте a spring.
  17. Put on from above a cap, thus its arrangement correct according to drawing.
  18. About installation of an amortisation rack see in the previous section.

Dismantle of back shock-absorbers

Cars quattro

Along with new shock-absorbers use also new самоконтрящуюся a nut and a new bolt for the top fastening of the shock-absorber:

 PERFORMANCE ORDER

  1. Dismantle an amortisation rack and clamp it in a vice for the bottom fixing eye. Do not clamp it in the field of external diameter, differently it will be pressed through.
  2. Establish the tension device on coils of a spring and slightly compress a spring.
  3. That the tension device has not slid off, paste over corresponding coils of a spring with a sticky tape.
  4. Loosen the самоконтрящуюся a nut of the top fastening of the shock-absorber, take out a bolt.
  5. Remove the shock-absorber, a spring and демпфирующее a ring.
  6. Establish still the compressed spring.
  7. The colour label on a spring is turned below to a spring plate.
  8. The bottom end of a spring adjoins to dredging of an eye of a spring below on the shock-absorber.
  9. Above the spring end too adjoins to dredging of an amortisation ring.
  10. Again collect an amortisation rack (a spring still under a tension).
  11. In the beginning freely manually screw the top fastening of the shock-absorber on the top part of an amortisation rack (the so-called adapter).
  12. The shock-absorber and the top part of an amortisation rack correct so that imagined axes of both fixing apertures of shock-absorbers were under the relation to each other at an angle 21 (the admission only 2 ). Thus the bottom aperture is in front turned to a car outer side (drawing on the right above see).
  13. In this position unload a spring.
  14. Now tighten a nut of a fixing bolt of the shock-absorber on 70 Nanometers. Then tighten it on 1/2 turns.
  15. About installation of an amortisation rack see in section above.

Replacement of the bearing of a back wheel

Cars with a forward drive

 PERFORMANCE ORDER

  1. On each party one is used new шплинт, one internal and one external bearing, and also a sealing ring.
  2. Lift and fix the car.
  3. Dismantle brake disks (the head of the Brake), for this purpose dismantle a support.
  4. Remove a cap for greasing of the wheel bearing.
  5. Straighten safety шплинт and take out it.
  6. Remove a stopper корончатой nuts and unscrew шестигранную a nut.
  7. Remove a press washer and the external wheel bearing.
  8. Wring out behind in the middle of a wheel nave a sealing ring, take out the bearing and wipe in a nave old greasing.
  9. Rotating rings of both bearings take out from the middle of a nave of a wheel. For this purpose put from the different parties from within a brass core to a rotating ring and soft blows of a hammer beat out it outside. Track that the ring was not bent.
  10. Establish on a wheel nave a new ring of the bearing. For protection put from above an old ring of the bearing (the thick party downwards) that at cautious driving in there was no damage on a working surface of the new bearing.
  11. Hammer all rings of bearings against the stop.
  12. Now again take out all old rings of bearings put for protection.
  13. Fill with greasing intermediate space between both rings of the bearing, and also a ring and bearings.
  14. Insert the internal bearing.
  15. In regular intervals hammer with a rubber hammer a sealing ring on an inside.
  16. Pull a wheel nave over the axis end.
  17. Put on the external wheel bearing and a press washer.
  18. Manually screw шестигранную a nut on the axis end; thus constantly turn a wheel that the bearing was not bent.
  19. Adjust the wheel bearing (the following section see).
  20. Establish a brake disk and a support (the head of the Brake). Then some times press a brake pedal.

Adjustment of the bearing of a back wheel

Cars with a drive on forward wheels

 PERFORMANCE ORDER

  1. Lift a back part of the car and fix it.
  2. The wheel in cars with steel rims can to be dismantled. If rims from easy metals, the wheel needs to be removed to improve access.
  3. Remove a nave cap, шплинт and корончатый a stopper how it is described above.
  4. Screw up шестигранную a nut without effort, rotating thus a wheel not to clamp the bearing.
  5. Again it is a little ослабьте a nut.
  6. The backlash is established correctly if the press washer behind a nut can be a little shifted a screw-driver with strong pressing of a finger. Do not damage a screw-driver edge of a nave of a wheel.
  7. If now lock шплинт it is impossible to advance through корончатый a stopper turn a nut in a screwing up direction a little.
  8. Pull a cap of a nave by means of a rubber hammer if it is necessary, put between them the curtailed rag.

The wheel bearing of models quattro

For all-wheel drive model are available запрессованные double ball-bearings also on a back axis. They do not need to be regulated, but in the absence of necessary прессовых stamps cannot be replaced them by own strength.