TO No.11
Every 15,000 km or at least once a year we recommend cleaning the paper filter element from larger dirt particles. When driving on very dusty roads this interval may be reduced.
In engines with the KE-111-Jetronic or KE-Motronic injection system, the intake cap above the fuel-air mixture corrector must be removed to remove the replaceable air filter element (2). Remove the four fastening brackets (arrows) around the air filter housing, press the upper part of the air filter housing (1) slightly to the side, and remove the replaceable element.
In other engine versions, replacing the replaceable air filter element (2) is much easier. Here, after opening the clamps, you only need to separate the upper part of the filter housing (1) from the lower part (3).
Shown here are the components of the intake air preheater on 85 kW engines. Shown here is the lower section of the air cleaner with the upper section removed on a 6-cylinder vehicle. The numbers represent:
1 — air intake sleeve;
2 - heated air sleeve;
3 - thermostat for the heated air control valve.
Remove the paper filter element using the diagram described above.
Tap the filter on a hard surface to loosen large dirt particles.
If fine dust also needs to be removed, the sides of the slats must be blown with compressed air.
Never direct the compressed air flow directly at the filter paper! Otherwise, dust particles will become tightly clogged in the filter pores.
Wipe the filter housing with a clean cloth.
Install the filter back into place.
[This article was previously published on the resource: AUDImanual]