Intrtnal Braking system
1. Internal expanding braking consists of brake lining are fixed at outside when brakes are applied the cam is turned the shoe with brake lining are forced Against thr Drum.
2. This causes brake lining creates frictions Between the rotating drum & expanding shoe.
3. This force of friction opposes the rotating drum. Thereby will lead to slowing down the vehicles.
4. When break is released retracting srprings bring the shoe back twowards its original position.