Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation



Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
- Air filter and airintaking channels
   Removal of a replaceable element of the air filter
   Purge of a replaceable element of the air filter
   Replacement of a replaceable element of the air filter
   Heating of inlet air
   Heating of an inlet collector
   Inlet collector with changeable length of a path
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications





Removal of a replaceable element of the air filter

Models with the 4-cylinder engine and system of injection of Mono-Motronic

 PERFORMANCE ORDER

  1. To unscrew two screws with the crosswise shliyets, located above on a cover of the air filter.
  2. To open tightening brackets round the filter case.
  3. To uncover, take out a replaceable element of the filter.
  4. At installation to watch the correct position of the case of the filter and a cover: dredging on the brink of a cover belongs to a ledge on the case.

Models with the 4-cylinder engine and system of injection of Digifant

 PERFORMANCE ORDER

  1. To weaken a bandage on an air inlet sleeve. To remove a sleeve.
  2. To open tightening brackets round the filter case.
  3. To uncover, take out a replaceable element of the filter.
  4. Vacuum hoses can remain connected.

Models with the 5-cylinder engine

 PERFORMANCE ORDER

  1. To weaken a fixing earring of a sleeve of an air inlet on a headlight cap; to remove a sleeve.
  2. To press two fixing latches of a cap of a headlight down and to remove it up.
  3. To remove the right part of a cap of a headlight after weakening of two screws with a crosswise shliyets.
  4. To remove an inlet cap over the proof-reader of composition of gas mixture.
  5. To remove in total five fixing brackets round the case of the air filter.
  6. To extend up the proof-reader of composition of gas mixture together with the top part of the case of the air filter. Now it is possible to take out a replaceable element.

Models with the 6-cylinder engine

 PERFORMANCE ORDER

  1. At the 2,8-liter engine to remove tips of a flowmeter of air.
  2. To remove a bandage on an air inlet sleeve. To remove a sleeve.
  3. To open tightening brackets round the filter case.
  4. To uncover, take out a replaceable element of the filter.

Removal of the case of the air filter

After removal of tightening brackets and both screws (1) it is possible to separate the top part of the case of the filter from the lower part (3) and to take out a replaceable element (2). At installation it is necessary to watch the correct provision of parts of the case on the relation to each other. The ledge on the lower part of the case should enter into dredging on the top part.

Replacement of the air filter on an example of the 4-cylinder engine in capacity of 85 kW is shown: after removal of tightening brackets (arrow) it is possible to remove the top part of the case (2). In addition here the air inlet sleeve is established also. Now the replaceable element of the air filter becomes available.


 PERFORMANCE ORDER

  1. The engine with system of injection of Mono-Motronic: to remove a replaceable element of the air filter (see above).
  2. To unscrew three nuts in the middle of the case and where is available, to take out a fixing ring.
  3. To remove all sleeves, to take out valves and топливопровод.
  4. To remove the case.
  5. At installation to pay attention: the vacuum sleeve to the valve of warmed-up air in a branch pipe of the inlet gas pipeline approaches to a hose tip from brass or to a tip with a label. And the sleeve to the block of preparation of gas mixture approaches to a plastic branch pipe without a label.
  6. Models with 4-cylinder engines and system of injection of Digifant, and also model with 5-and 6-cylinder engines: to uncover cases (with the proof-reader of composition of gas mixture) and a replaceable element of the air filter.
  7. To disconnect a sleeve of warmed-up air of system of heating of inlet air.
  8. To unscrew a six-sided bolt at the capacity basis.
  9. To take out a fixing pin of the case of the filter from the rubber plug on a wheel niche.
  10. To remove the case.