Brake Booster, Replacing

Replacing the power brake booster, left-hand drive cars

Preparations






Ignition off.
Place a rag under the ABS hydraulic modulator as protection against brake fluid spillage

Removing the power brake booster

Remove:






- The main cylinder. See Replacing the master cylinder Then continue as follows
- The bracket with the ABS hydraulic modulator. See Replacing the hydraulic unit
- Release the cable above the power brake booster.
- The soundproofing under the steering wheel
- The locking spring holding the support bracket to the brake pedal
- The four nuts securing the power brake booster to the inside of the firewall.
- The power brake booster. Take care with the O-ring between the power brake booster and the firewall.

Installing new power brake booster

Transfer the cable clips and the seal to the new power brake booster. If necessary replace the seal.

Install:






- The power brake booster with the connector for the relief valve (1) at four o'clock.
- Connect the push rod to the brake pedal.
- The retaining clip
- The four new mounting nuts. Tighten to 25 Nm
- The main cylinder. See (Not for VADIS use) Master cylinder, replacement
- The bracket with the ABS hydraulic modulator. See Replacing the hydraulic unit. Then continue according to instructions below.

Finishing work

It is important that the stop lamp switch is set after the brake pedal lever has been disconnected from the power brake booster.

- Remove and install the stop lamp switch. Adjust as required
- Install the sound insulation under the steering wheel.