Removal and installation the clutch master cylinder (Audi A4 B7)

1. Remove the windshield wiper arms (see Chapter 12) and windshield fairing (see Chapter 11).

2. Remove the electronics unit from the gutter.

3. Clamp the supply hose (And in the illustration) clamp 3094, disconnect the hose from the brake fluid reservoir and plug the hose. Remove the seal from the engine compartment bulkhead above the feed hose connection tube. Slide the lock (C) and pull the tube and hose assembly (B) slightly.



4. Remove the brake fluid reservoir mounting bolt (see illustration) and disconnect the low brake fluid level sensor connector.

Note: It is not necessary to remove the tank.

5. Remove the vacuum line leading to the brake booster (1 in the illustration) and unscrew the two bolts (arrows), tilting the brake fluid reservoir.





6. Remove the driver's storage compartment (see Chapter 11) and an eccentric spring (see illustration 7.2b). Separate the brake pedal from the brake booster.



7. Separate the steering column from the steering gear (And in the illustration, see Chapter 10), disconnect the connectors of the clutch pedal sensor (1), brake light D/W (2) and accelerator pedal module (3). If equipped, disconnect the connector of the engine start enable sensor. Loosen the bracket bolt (B) and remove the pedal assembly.





8. Separate the master cylinder rod from the clutch pedal. To do this, squeeze the sides of the retainer with VAG1922 pliers and separate the clutch pedal from the master cylinder (see illustration).



9. Separate the retainer (1 in the illustration), remove the clutch pedal (2), unscrew the bolts (3) and remove the master cylinder (4).



10. Installation is carried out in the reverse order of dismantling the components.

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