Clutch System, Bleeding

WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

After working on the hydraulic clutch mechanism, the system must be bled.

During the following procedures, make sure that brake fluid does not leak onto the longitudinal member or the transmission.

Before bleeding, fill the brake fluid reservoir to the max marking with brake fluid.

Special tools and workshop equipment required

Brake Filler/Bleeder Unit VAS 5234
Brake fluid specifications, refer to MAINTENANCE, DIAGNOSIS

Procedure

Tightening specification, refer to HYDRAULICS ASSEMBLY OVERVIEW .

-- Completely remove the air filter housing. Refer to [For engine(s) CETA, CCTA] Removal and Installation or refer to [For engine(s) CBRA] Removal and Installation or refer to [For engine(s) BPY, CDMA] Removal and Installation .

-- Pull the clutch pedal back to the rest position.

-- Connect the VAS 5234 to the brake fluid reservoir.

-- Remove the protective cap on the vent screw -arrow- and connect bleeder bottle hose -A-.

Fig 1: Connecting Bleeder Hose To Bleeder

Courtesy of AUDI OF AMERICA, LLC

-- Switch on brake filler/bleeder unit.

Working pressure 2.0 bar positive pressure.

-- Now open the vent screw approximately ¹ /₄ turn and let 100 cm³ brake fluid drain out.

-- With the vent screw open, press the clutch pedal by hand very quickly 15 to 20 times from one stop to the other (approximately 2 presses per second).

-- Close the vent screw.

-- Switch the VAS 5234 off and completely release the pressure on the bleeder unit.

-- Now press the clutch pedal slowly 10 times from stop to stop.

-- Check clutch system function when doing so.

-- Pull off bleeder hose and set protective cap in place.

-- Remove the VAS 5234 from the brake fluid reservoir.

-- Install the air filter housing. Refer to [For engine(s) CETA, CCTA] Removal and Installation or refer to [For engine(s) CBRA] Removal and Installation or refer to [For engine(s) BPY, CDMA] Removal and Installation .