Attention! When coasting downhill with the engine off, remember that after a few presses on the brake pedal, the vacuum in the vacuum booster «expended» and the brake system works without booster support. Therefore, more force must be applied to the brake pedal when braking.
To provide access to the vacuum booster, it is necessary to remove the brake master cylinder. When removing the vacuum booster, the push rod is disconnected from the brake pedal.