Hebei Hankai 20x35x7 oil seal
1. Leak Prevention One of the primary functions of a hub oil seal is to prevent oil leaks. If the oil seal fails, the lubricant can escape, leading to insufficient lubrication of the bearings and other critical components. This can result in increased wear and tear, decreased performance, and eventually, catastrophic failure.


Une fois la roue retirée, vous verrez le tambour de frein. Pour le retirer, desserrez les vis qui le maintiennent en place. Dans certains cas, il peut être nécessaire de taper légèrement sur le tambour avec un maillet en caoutchouc pour le déloger. Assurez-vous qu'il n'y a pas de poussière de frein dans l'environnement de travail.
drum brake installation steps

The expansion of the brake shoes is facilitated by a cam mechanism, which converts the linear motion of the brake pedal into the radial movement of the shoes. The cam rotates and pushes the shoes outward, increasing contact with the drum surface. Friction between the shoes and the drum generates the necessary braking force to slow down or stop the vehicle.
mechanical drum brake diagram
