1 - Wheel bolt
2 - Regulator
1. Jack up the car and put it on stands.
2. Remove the wheel bolt (1) and turn the wheel so that access to the regulator (2) opened through a bolt hole.
3. Make sure that the parking brake cocking lever is fully released, then turn the adjuster (2), press the shoes against the drum surface.
4. Turn the regulator (3) back three risks.