audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing and installing fuel filter housing - vehicles with common rail engine > < Removing and installing fuel filter housing - vehicles with unit injector engine

A3 Mk2

Fuel filter - exploded view (vehicles with common rail engine)
Fuel filter - exploded view (vehicles with common rail engine)
  Caution
Running when dry causes irreparable damage to high-pressure pump.
If the fuel filter, the fuel lines or the supplementary fuel pump -V393- are renewed on vehicles with common rail engine, it is important to bleed the fuel system before the engine is started for the first time.
–  Bleed fuel system → Rep. gr.23.
  Note
Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
   
1 - Fuel line
q   Check that it is securely seated
q   Overview of connections: fuel filter (top section), version A → Fig.
q   Overview of connections: fuel filter (top section), version B → Fig.
2 - Bolt
q   Tightening torque: fuel filter (top section), version A → Fig.
q   Tightening torque: fuel filter (top section), version B → Fig.
3 - Washer
4 - Fuel line
q   Check that it is securely seated
q   Overview of connections: fuel filter (top section), version A → Fig.
q   Overview of connections: fuel filter (top section), version B → Fig.
5 - Fuel line
q   Check that it is securely seated
q   Overview of connections: fuel filter (top section), version A → Fig.
q   Overview of connections: fuel filter (top section), version B → Fig.
6 - Fuel line
q   Check that it is securely seated
q   Overview of connections: fuel filter (top section), version A → Fig.
q   Overview of connections: fuel filter (top section), version B → Fig.
7 - Fuel filter (top section)
q   Note different versions: fuel filter (top section), version A → Fig.
q   Note different versions: fuel filter (top section), version B → Fig.
8 - Filter element
q   Renew filter at intervals specified in Service Schedule → Booklet808
9 - Fuel filter housing
q   Removing and installing → Chapter
10 - 10 Nm
11 - Seal
q   Renew

   
Fuel filter (top section), version A
1 - 8 Nm
2 - 4 Nm - screw plug for fluid extraction (not always fitted; unscrew and extract approx. 100 cm3 of fluid using diesel extractor -VAS 5226-; renew seal)
3 - Supply line from fuel tank (white or with white marking). Check for secure seating.
4 - Return line to fuel tank (blue or with blue marking). Check for secure seating.
5 - Supply line to engine (white or with white marking). Check for secure seating.
6 - Return line from engine (blue or with blue marking). Check for secure seating.
  N20-10528
Fuel filter (top section), version B
1 - 5 Nm
2 - Return line to fuel tank (blue or with blue marking). Check for secure seating.
3 - Supply line from fuel tank (white or with white marking). Check for secure seating.
4 - Return line from engine (blue or with blue marking). Check for secure seating.
5 - Supply line to engine (white or with white marking). Check for secure seating.
  N20-10379

Removing and installing fuel filter housing - vehicles with common rail engine > < Removing and installing fuel filter housing - vehicles with unit injector engine