SEAT Workshop Service and Repair Manuals > Leon Mk1 > Running gear | Brake system | Brakes, hydraulics, regulator, servo | Brake system: bleeding of air

Initial purge

Consult the equivalence table for tools and equipment according to applicability between Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Vehicle diagnostic, testing and information system -VAS 505X-

t	Brake de-airing device - SAT 1175B -

–	Connect the brake bleeder -SAT 1175B-. Consider the → operating instructions of the brake bleederSAT 1175B.

–	Adjust the pressure of the brake bleeder -SAT 1175B- according to the control unit of the brake system installed in the vehicle. See → Anchor.

–	Remove the protective cap -1- of the bleeder screws of the brake callipers of the front axle.

Note

Mount the hose of the collector bottle -SAT 1175B/1- accurately on the bleeder screws so that no air enters the connection.

–	Connect the hose -1- of the collector bottle -SAT 1175B/1- to the bleeder screws of the brake calliper on the front axle.

–	Open the bleeding bolts.

–	Leave the bleeding bolts open and only close when brake liquid appears without any air bubbles.

–	Remove the hose of the collector bottle -SAT 1175B/1- and place a protective cap on a bleeding bolt of the brake calliper.

–	Tighten the bleeding bolts to the specified tightening torque. See → Chapter

–	After carrying out the operations described above, bleed the brake calliper / cylinder of the rear axle.

–	Bleed the control unit of the brake system using the vehicle diagnostic, testing and information system -VAS 505X - according to the instructions in chapter → Chapter.

–	After ending the procedure using the vehicle diagnostic, testing and information system -VAS 505X -, switch off the ignition and disconnect the diagnostic connector.

–	Continue according to the instructions of section → Chapter.

SEAT Workshop Service and Repair Manuals