The vacuum booster is non-separable and cannot be repaired.
In the cabin, pry off with a screwdriver and remove the spring retainer from the pin connecting the pusher to the brake pedal, and...
... take out the pin.
head «at 13» unscrew the four nuts securing the amplifier to the motor shield.
In the engine compartment, remove the master brake cylinder from the amplifier (see Removal of the master brake cylinder and its repair).
Carefully prying with a screwdriver, remove the vacuum hose fitting from the amplifier housing.
We remove the amplifier from the car.
Install the new amplifier in the reverse order of removal.
Before installation, check the protrusion of the rod head (1.05–1.25 mm) relative to the plane of the amplifier housing. This value corresponds to a brake pedal free play of 3–5 mm. If necessary...
...the key «on 7» rotate the head of the rod, achieving the desired parameters. At the same time, we hold the stem with pliers.