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Exploded view - clutch release mechanism, clutch slave cylinder > < Exploded view - hydraulics (RHD)

A3 Mk2

Bleeding clutch system
Bleeding clutch system
  Note
t  The clutch system must be bled after performing work on the hydraulic clutch mechanism.
t  In the following steps make sure that no brake fluid escapes onto the longitudinal member or onto the gearbox below.
t  Before bleeding clutch system, top up brake fluid reservoir to “max.” marking with brake fluid.
Special tools and workshop equipment required
   
t  Brake filling and bleeding equipment -VAS 5234-
t  Brake fluid specification → Rep. Gr.47.
Procedure
l  Tightening torque → Chapter
  W00-1101
Vehicles with air cleaner housing in front of battery
–  Remove complete air cleaner housing → Rep. Gr.23 or → Rep. Gr.24.
  A10-10760
Continued for all vehicles
–  Pull clutch pedal back to its normal rest position.
–  Connect brake filling and bleeding equipment -VAS 5234- to brake fluid reservoir.
–  Remove protective cap from bleeder screw -arrow- and connect hose -A- from bleeder bottle to bleeder screw.
–  Switch on bleeding equipment.
l  Operating pressure 2.0 bar
–  Now open bleeder screw approx 1/4 turn and allow 100 cm3 of brake fluid to run out.
–  With bleeder screw open, pump clutch pedal rapidly all the way in and out by hand 15 to 20 times (approx. 2 times per second).
–  Close bleeder screw.
–  Switch off brake filling and bleeding equipment -VAS 5234- and release operating pressure on bleeding equipment (2.0 bar).
–  Press clutch pedal slowly down with your foot 10 times and check that clutch system is functioning properly.
–  Remove brake filling and bleeding equipment -VAS 5234- from brake fluid reservoir.
–  Install air cleaner housing → Rep. Gr.23 or → Rep. Gr.24.
  N30-0311

Exploded view - clutch release mechanism, clutch slave cylinder > < Exploded view - hydraulics (RHD)