Removal and installation the master brake cylinder (VW Sharan 1)

The master brake cylinder is located in the engine compartment and is attached with nuts to the vacuum booster.

Removal the main brake cylinder, carry out in the following order:

• before starting work, press the brake pedal 5-6 times with the engine off to create the same pressure in the vacuum and atmospheric chambers of the vacuum booster, close to atmospheric (remove vacuum);
• disconnect the vacuum hose from the vacuum booster;

• using a siphon bulb, pump out the brake fluid from reservoir 3 (Fig. 327), after the sieve has been removed;

Warning: Never pump brake fluid through the hose by mouth - brake fluid is poisonous.

• disconnect the connector with wires from the terminals of the brake fluid emergency level sensor;
• disconnect the clutch master cylinder hose;
• if necessary, remove the reservoir from the master cylinder by rocking it back and forth. Be careful - residual brake fluid may leak out. Put a rag;
• label and disconnect the lines from the master cylinder and carefully bend them aside;
• close the openings near the pipes and the master cylinder to prevent fluid leakage and dust and dirt from getting into them;
• remove the cylinder by unscrewing the nuts that secure it to the vacuum booster;
• remove the rubber sealing ring 7 (Fig. 327).

Installation the master brake cylinder in the reverse order of removal, taking into account the following:

• rubber sealing ring 7, always replace with a new one;
• tighten nuts 5 securing the master brake cylinder to the vacuum booster 9 to a torque of 25 N·m;
• tighten the union nuts of the brake lines to a torque of 13 Nm;
• the vacuum booster push rod is not adjustable;
• lubricate the connecting bushings 4 with brake fluid and press the reservoir into them;
• after installing the master brake cylinder, restore the fluid level in the reservoir and bleed the hydraulic drive system.

[The original material is available on the portal: vwmanual.ru]