Execution sequence
1. We prepare the car for operations (see "Vehicle preparation for maintenance and repair").
2. Disconnect the wire blocks 1 from the switch.
3. Using a 19 mm wrench, we loosen the lock nut 2 and, turning the switch 4, we achieve its contact with the pedal stop 3.
4. Tighten the locknut and randomly connect the wire blocks.
If the incomplete release of the brake mechanisms could not be eliminated by adjusting the position of the brake signal switch, then it is necessary to check the amount of protrusion of the rod head relative to the plane on the housing of the vacuum brake booster (see "Vacuum brake booster - replacement").