Removal and installation the brake booster (Opel Kadett E)

Separate the master brake cylinder from the booster and, without disconnecting the lines from the master cylinder, move it forward.

Disconnect the vacuum hose from the booster.

Remove the brake light switch.

Disconnect the brake pedal return spring and remove the push rod shaft.

Remove the nuts securing the brake booster bracket from the brake pedal mounting bracket.

Loosen the bolts securing the vacuum booster bracket, remove the bracket from the front body panel and remove the vacuum booster assembly with the bracket.

Clamp the vacuum booster by its bracket in a vice and unscrew the piston pusher fork.

Remove the vacuum booster from the bracket.

The vacuum booster is installed in the reverse order of removal. Then, without starting the engine, press the brake pedal five times and measure the working stroke of the vacuum booster along the pedal: 1 mm of the booster piston stroke corresponds to 6-9 mm of the pedal stroke. If the value of the vacuum booster piston stroke does not correspond to the norm, adjust the length of the pusher by unscrewing the fork lock nut and turning the piston rod with pliers. Tighten the pusher fork lock nut. Bleed the brake hydraulic system and make sure the connections are tight.