Audi Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Hose clamp 3094

Removing

• ‒ Take the electronics box out of the plenum chamber:

• ‒ → Unscrew bolts -arrows- and take off the cover.
• ‒ Remove engine control unit and 8-point relay carrier (if fitted)

=> Electrical system; Repair group 97; Fitting locations of control units and electrical connections; Removing and installing auxiliary relay carrier and auxiliary fuse box

• ‒ Unplug connector in connector station.
• ‒ Pull engine wiring harness together with rubber grommet out through opening in electronics box.

• ‒ → Unscrew both nuts -A-.
• ‒ Lift electronics box off studs at the rear and then pull it out of securing point -B-.

Notes:

• ◆ Make sure that no brake fluid escapes into the plenum chamber or onto the gearbox below. If this does happen, clean the affected areas thoroughly.

• ◆ When performing work in the footwell, put cloths on the carpet to protect it from possible brake fluid spills.

• ‒ → Clamp supply hose -A- from brake fluid reservoir using special tool 3094. Pull hose off master cylinder and plug hose.
• ‒ Lever out retaining clip -C- using a screwdriver and pull pipe -B- out slightly.

• ‒ Remove storage compartment on driver's side:

=> General body repairs, interior; Repair group 70; Dash panel; Removing storage compartment on driver's side

• ‒ If fitted, pull out switch above clutch pedal.
• ‒ → Detach clutch pedal from master cylinder. To do this, unclip pin using a screwdriver -arrow 1- and pull out pin -arrow 2-.
• ‒ Unbolt master cylinder from passenger compartment.

Installing

Installation is carried out in the reverse order, when doing this note the following:

• ‒ Connect clutch pedal to master cylinder. Clip pin onto clutch pedal.
• ‒ → Press in retaining clip -C- as far as it will go.
• ‒ Push pipe -B- into master cylinder until it engages audibly.

• ‒ → Push supply hose -A- from brake fluid reservoir on as far as it will go.
• ‒ Bleed clutch system after installing master cylinder .

• ‒ → Always replace gasket -C-.
• ‒ Make sure that that the gasket does not obstruct the opening in the body.
• ‒ Press on cover by hand and tighten bolts -A- to 4 Nm in diagonal sequence (see also markings on cover).