Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation



Audi 80/Avant
+ The description
+ Engines
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Coupling
+ Transmission and transmission
- Suspension bracket and steering
   The control of a condition of a casing of the steering mechanism
   Check of dustproof covers and люфта tips of cross-section steering draughts
   Check of dustproof covers of hinges of a forward suspension bracket
   Check люфта a steering
   Check клинового or поликлинового a belt
   Check of level of a working liquid
   Check люфта the bearing of a nave of a wheel
   Shock-absorbers
   The list of malfunctions
   Adjustment of corners of installation of wheels
   Measurement of adjustment of corners of installation of wheels
   The list of malfunctions
   Running gear and steering repair
   Repair of a forward suspension bracket
   Repair of a back suspension bracket
   Steering
   Steering repair
   The list of malfunctions
   Adjustment of the steering mechanism
   Refuelling by a liquid and prorolling of hydrosystem of the amplifier of a wheel
   Safety pillow
   Safety precautions requirements
+ Brake system
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
+ Ignition system
+ Illumination
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications



Repair of a forward suspension bracket

Very many elements of a forward suspension bracket of wheels can be removed independently and again to establish. Devices nevertheless are necessary for carrying out of certain works from a workshop. The damaged parts of a suspension bracket in no event cannot be corrected and furthermore to weld, it is necessary to replace them essentially new.

Removal of a forward amortisation rack

Removal of an amortisation rack above. After removal of a cover (1) it is possible to weaken a nut of fastening of an amortisation rack with the help накидного a key (3). For this purpose to hold a shock-absorber rod face шестигранным with a key (2).

Cнятие an amortisation rack below. Are shown болтовые connections of draught of the stabilizer (1) and болтовые connections with the case of the bearing of a nave of a wheel (2 and 3).

At removal of an amortisation rack it is necessary to consider: if it to disconnect from the case of the bearing of a nave of a wheel it is necessary to make anew adjustment of corners of installation of wheels that is possible only at the measuring stand in a workshop.

For this reason we describe here removal of an amortisation rack together with the case of the bearing of a nave of a wheel.

One more addition: to an inhaling of the top nut of an amortisation rack of mechanics in a workshop apply face wrench VW 3078. For want of something better for performance of these works it is possible to use накидной a wrench and own scent.

 PERFORMANCE ORDER

  1. To get new самоконтрящуюся a nut and a new tightening bolt of the hinge of an independent suspension bracket.
  2. At the car standing on the earth to weaken the central fixing bolt of a power shaft in a wheel nave (in the middle of a wheel).
  3. To weaken bolts of fastening of a wheel.
  4. In regular intervals to raise the car in front that the stabilizer was not loaded. To provide car fixing.
  5. To remove a wheel.
  6. To disconnect draught of the stabilizer from both amortisation racks, to wring out the stabilizer upwards.
  7. To disconnect скобу the disk brake mechanism and to strengthen it on a body by means of a wire – the pipeline of a brake drive remains connected.
  8. To separate the hinge of cross-section steering draught.
  9. To remove tightening a bolt of the axial hinge at the very bottom at an amortisation rack.
  10. Mount to extend a finger of the hinge from an amortisation rack. Thereby the amortisation rack and the cross-section lever of a suspension bracket are divided. Thus in no event it is impossible to expand шлиц in the case of the bearing of a nave of a wheel, for example with a screw-driver.
  11. To turn out a wheel and to take a power shaft from a wheel nave.
  12. To uncover a glass of an amortisation rack in a motor compartment.
  13. To remove above from a rod a nut of fastening of an amortisation rack. For this purpose to adhere a rod with a key for internal шестигранника.
  14. Thus to hold an amortisation rack from below.
  15. To take out an amortisation rack in a direction downwards and simultaneously completely to remove it from a power shaft.
  16. To installation to apply new самоконтрящиеся nuts and new tightening a bolt of the hinge of a suspension bracket.
  17. To establish tightening a bolt so that its head has been directed forward in the direction of travel.
  18. The inhaling moments: a nut of the top fastening of an amortisation rack: 60 Н•м, a nut of cross-section steering draught: 30 Н•м, tightening a bolt of the hinge of an independent suspension bracket: 50 Н•м, connecting draught of the stabilizer on an amortisation rack: 40 Н•м.
  19. If the same amortisation rack and thus the bolts connecting the case of the bearing of a nave of a wheel and an amortisation rack is established, remain all time clamped it is not necessary to correct adjustment of corners of installation of wheels.

Elements of a forward amortisation rack and sequence of their installation

1 – a spring;
2 – a spring plate;
3 – the bearing of an amortisation rack;
4 – the buffer;

5 – a protective casing;
6 – a carving cover:
7 – the shock-absorber;
8 – 10 – the prorate, a cover.


Suspension bracket of a forward wheel of car Audi 80 at a short distance

1 – the case of an amortisation rack;
2 – болтовые connections of the case of an amortisation rack and the case of the bearing of a nave of a wheel;
3 – the case of the bearing of a nave of a wheel;

4 – the axial hinge;
5 – tightening a bolt;
6 – the bottom cross-section lever of a suspension bracket.

At the left: coupling скобы are necessary that at removed amortisation rack to separate a spring from the shock-absorber.

On the right: the illustration shows tightening a bolt of the hinge of a suspension bracket (1) by which the hinge of a suspension bracket (3) is strengthened in the case of the bearing of a nave of a wheel. Further are designated: fixing nuts (2) by which the suspension bracket hinge is connected with the bottom cross-section lever.

Replacement of the forward shock-absorber

For carrying out of this work (at the removed amortisation rack) the device for a tension (compression) of a spring is necessarily necessary. Two strippers be required to you at least, it is even better – three. Without application of the device for a spring tension it is impossible to weaken шлицевую a nut above on a shock-absorber rod because the spring is in a condition of a strong preliminary tension. Otherwise compound details of an amortisation rack will scatter in the parties as at explosion – danger of accident is great!

Besides, not compressed spring already cannot be established into place. Натяжители springs it is possible to get in shops of spare parts. Following special tools further be required: key VW 524 for easing шлицевой nuts and the tool 40-201 And for easing of a carving cover over the shock-absorber. If at you they are not present, it is necessary to help itself the big trumpet key.

 PERFORMANCE ORDER

  1. To remove an amortisation rack (the previous section see).
  2. To clamp an amortisation rack through wooden клинышки at height of the lever of a rotary fist in a vice. Never clamp for a cylindrical site, differently you crush an amortisation rack.
  3. To establish натяжитель springs at coils of a spring and a few to compress it.
  4. That натяжитель springs has not slid off, it is necessary to paste over if necessary these coils клеющей with a tape.
  5. Now to weaken шлицевую a nut at the top of an amortisation rack. To hold a rod of the shock-absorber with a wrench.
  6. To remove a spring together with the bearing of an amortisation rack and additional details.
  7. To remove a carving cover above at the shock-absorber.
  8. To extend the shock-absorber.
  9. At factory liquid shock-absorbers are established. In this case it is necessary to pour out an old liquid of the shock-absorber (a special waste!) and to clean its rod.
  10. To establish a new cartridge of the shock-absorber without a liquid.
  11. Sequence of installation of components look in drawing on the right above. Further pay attention: colour marks of springs specify a bottom.
  12. The inhaling moments: a carving cover of a cartridge of the shock-absorber: 150 Н•м, шлицевая a nut on a shock-absorber rod: 50 Н•м.

Removal of the forward bearing of a nave of a wheel

The bearing of a nave of a wheel the external ring запрессован in the case, in an internal ring запрессована a wheel nave. The new bearing of a nave of a wheel in no event cannot be driven on the place a hammer, differently you "establish" following damage together with the bearing. Therefore it is better to remove only a amortisation rack and to disconnect a disk of the brake mechanism, and also a casing. And actually you should entrust removal and installation of the bearing to a workshop in which order there is a repair press.

Replacement of the axial hinge

 PERFORMANCE ORDER

  1. To get new самоконтрящуюся a nut and a new tightening bolt of the hinge of an independent suspension bracket.
  2. In regular intervals to raise the car in front that the stabilizer was not loaded. To provide car fixing.
  3. To remove a tightening bolt of the hinge of a suspension bracket at the very bottom of an amortisation rack.
  4. Mount to squeeze out a finger of the hinge of an independent suspension bracket at an amortisation rack. Thus in no event it is impossible to expand шлиц in the case of the bearing of a nave of a wheel, for example with a screw-driver.
  5. To note adjusting position of the hinge on the bottom cross-section lever of a suspension bracket.
  6. To turn off fixing nuts of the axial hinge below from the bottom cross-section lever of draught. To remove the hinge.
  7. At fastening of the axial hinge to consider the marks made at removal, in this case adjustment of corners of installation of wheels remains approximately former.
  8. Not to forget lining plates for fixing nuts.
  9. The inhaling moments: nuts of the hinge of an independent suspension bracket need to be tightened the moment 65 Н•м, nuts of a tightening bolt the moment 50 Н•м.
  10. To make in a workshop adjustment of corners of installation of wheels.

Removal of the cross-section lever of a suspension bracket

 PERFORMANCE ORDER

  1. It will be necessary to replace all самоконтрящиеся nuts, and also the bolts connecting support of the cross-section lever of a suspension bracket and a beam of the bridge.
    The cross-section lever of a suspension bracket to remove or together with the axial hinge, or without it. What bolts need to be weakened in that or in other case, describes the previous section.
  2. To turn out nuts of internal plugs of a support of the cross-section lever of a suspension bracket.
  3. If internal bearings of the cross-section lever of a suspension bracket have already worn out, before installation of the lever it is better at once запрессовать (in a workshop) new.
  4. Installation: to strengthen the cross-section lever of a suspension bracket outside on the case of the bearing of a nave of a wheel or on the hinge of an independent suspension bracket. You will find the moments of an inhaling in the previous section.
  5. Nuts of internal bearings of the cross-section lever of a suspension bracket at first to tighten poorly. To tighten up to the end follows only when the car will stand on wheels. Bearings of the cross-section lever otherwise can warp.
  6. The moments of an inhaling of nuts of internal bearings of the cross-section lever of a suspension bracket: at first
    40 Н•м, in summary to turn on 1/4 turns (90 ).

The arrow specifies in the bottom fixing bolt under a back amortisation rack at front-wheel models.

The top fastening of an amortisation rack on a back axis at front-wheel models. Arrows specify in four fixing bolts of an amortisation rack, figure (1) designates a amortisation rack.