audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Servicing clutch release mechanism > < Removing and installing clutch slave cylinder
Bleeding clutch system
Bleeding clutch system
Special tools and workshop equipment required
   
t  Brake filling and bleeding equipment -VAS 5234- or brake filling and bleeding equipment -V.A.G 1869-
–  Brake fluid specification → Rep. Gr.47
Procedure
  Note
t  Open the bleeder valve before switching on the bleeding appliance.
t  When performing the following steps, make sure that no brake fluid escapes onto the gearbox.
t  The clutch system must be bled after performing work on the hydraulic clutch mechanism.
t  Before bleeding the clutch system, pull back the clutch pedal to the normal position and top up brake fluid to “Max” marking on brake fluid reservoir.
t  The clutch system should be bled at the same intervals as the brake system.
–  Connect brake filling and bleeding equipment -V.A.G 1869- or -VAS 5234-, but do not switch on at this stage.
–  To bleed system, use 670 mm bleeder hose -V.A.G 1238/B3- if necessary.
–  Then connect bleeder hose to collector bottle of brake bleeding unit.
  W00-1101
–  Connect bleeder hose to clutch slave cylinder -arrow- and open bleeder valve.
–  Switch on bleeder appliance and allow about 100 cm3 of brake fluid to drain out.
l  Operating pressure 2 bar
  Note
Ensure bleeder hose is correctly fitted during bleeding operation.
–  Close bleeder valve.
–  Depress clutch pedal several times after bleeding process is completed.
–  Repeat bleeding procedure if necessary.
  A30-0063

Servicing clutch release mechanism > < Removing and installing clutch slave cylinder