Special tools and workshop equipment required

• Brake filling and bleeding equipment - VAS 5234-

Note

• After carrying out work on the hydraulic clutch mechanism, the system must be bled.
• When performing the following steps, make sure that no brake fluid escapes onto the gearbox.
• Prefilling system is not necessary!
• Before bleeding the clutch system, top up the brake fluid reservoir to the "Max." marking with brake fluid.
• Clutch pedal is at rest position, is not being depressed.
• Brake fluid: allocation.

• Remove complete air filter housing if it prevents access to bleeder valve (-arrow- figure below) .
• Pull clutch pedal back to rest position.
• Remove protective cap from the bleeder valve -arrow-.
• Connect brake filling and bleeding device .
• Connect bleeder hose to bleeder valve and to pressure hose of fluid collector bottle.

If necessary, use bleeder hose (670 mm long) - V.A.G 1238/B3- for bleeding.

• Switch on brake filling and bleeding equipment .
• Working pressure: 2.0 bar, positive pressure
• Open bleeder valve.
• Allow about 100 cm3 of brake fluid to flow out.
• Close bleeder valve.
• Rapidly operate pedal from stop to stop 10 to 15 times.
• Open bleeder valve.
• Allow another 50 cm3 of brake fluid to flow out.
• Close bleeder valve.
• Switch off brake filling and bleeding equipment and relieve pressure completely from bleeding equipment.
• After finishing air bleeding, the clutch pedal must be activated several times.

Tightening torque:

Checking clutch master cylinder and clutch slave cylinder

Carry out Guided fault finding using - Vehicle diagnostic tester before you renew the clutch master cylinder with an assumed fault.