Audi Workshop Service and Repair Manuals

Special tools and workshop equipment required

Removing

• ‒ Fit bleeder hose and bleeder bottle to the front left brake caliper bleeder screw and open bleeder screw.
• ‒ Depress the brake pedal in order to pump out as much brake fluid as possible.
• ‒ Close front left bleeder screw.

Note:

• ◆ Protect the engine compartment against escaping brake fluid.

• ‒ → Detach the feed hose -1- for the clutch master cylinder and seal with a dummy plug.
• ‒ Unplug the connector of the sender for the float warning indicator -2-.

• ‒ → Disconnect brake pipes -1- from brake master cylinder and seal brake pipes with plugs from repair kit, Part No. 1H0 698 311 A.
• ‒ Unscrew nuts -2- from brake master cylinder.
• ‒ Carefully remove brake master cylinder from brake servo unit.

Pay special attention to the following on installation:

• ‒ When fitting together the brake master cylinder and brake servo unit, ensure that the push rod is correctly located in the brake master cylinder.
• ‒ Apply slight pressure to the brake pedal in order to move the push rod towards brake master cylinder; this makes it easier to guide brake master cylinder onto the push rod.

Note:

On RHD models the following additional operations also need to be carried out.

• ‒ Pull off plenum chamber seal
• ‒ Unclip wiring loom
• ‒ When removing the brake master cylinder, pull the wiring loom up and take the brake master cylinder out of the brake servo unit.

Bleeding clutch hydraulic system:

• ‒ Connect V.A.G 1869 but do not switch on yet.
• ‒ Open bleeder screw on slave cylinder.
• ‒ Attach collector bottle hose.
• ‒ Switch on the bleeding appliance and allow about 100 cm3 of brake fluid to flow out of the clutch slave cylinder.
• ‒ Close bleed screw.
• ‒ Bleed brake system