audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing and installing air cleaner housing > < Removing and installing engine cover panel

A4 Mk3

Removing and installing air filter element
Removing and installing air filter element
   
Removing
–  Release hose clips -arrows- and remove air pipe -1-.
  A23-10600
–  Release catch -1-, turn cover for air cleaner housing in anti-clockwise direction -arrow A- and detach.
–  Take out air filter element.
Installing
Installation is carried out in the reverse order; note the following:
l  Tightening torques → Chapter „Air cleaner - exploded view“
To ensure that the air mass meter -G70- functions properly, it is important to observe the following notes and instructions.
  Note
t  If the air filter element is very dirty or wet, dirt or water could reach the air mass meter and affect the air mass value. This would lead to loss of power, since a smaller injection quantity is calculated.
t  Always use genuine part for air filter element.
t  The air cleaner housing MUST be clean.
t  Hose connections and air pipes and hoses must be free of oil and grease before assembly.
t  To prevent malfunctions, cover critical parts of the engine air intake (air mass meter, air pipes, etc.) with a clean cloth when blowing out the air cleaner housing with compressed air.
t  Use a silicone-free lubricant when installing the air hoses.
t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
t  To secure the air hoses at their connections, spray rust remover onto the worm thread of the used hose clips before installing.
t  Observe environmental requirements for disposal.
  A24-10876
–  Clean salt residue, dirt and leaves out of air cleaner housing using a vacuum cleaner.
–  Blow out water drain -arrow- on air cleaner housing with compressed air.
–  Check for dirt and leaves in air duct going from lock carrier to air cleaner housing.
  A24-10877
–  When installing air filter element, check that it is properly centred in retainer in air cleaner housing.
–  Carefully fit cover on air cleaner housing without using force.
–  Turn cover in clockwise direction -arrow B- until catch -1- engages.
–  Make sure that air hose is securely fitted on air cleaner housing.
  A24-10876

Removing and installing air cleaner housing > < Removing and installing engine cover panel