Which brake shoe is primary

By balancing engine braking and pumping your brakes , you allow your brake system to cool. Riding the brakes down a long hill generates friction which creates the stopping power you need. What is the difference between the primary and secondary brake shoe? Category: automotive auto safety technologies. Which brake shoe is the primary? Can you put brake shoes on backwards? What is a leading brake shoe? Which side does the thicker brake shoe go on?

Where are the brake shoes located? What are dual servo brakes? What are the advantages of drum brakes? What is self servo action? What are the 2 types of drum brakes? How often should brakes be checked? What are the best brake drums? What is leading trailing drum brakes? What are the material used for brake lining?

How many types of brakes are there? What is a diagonally split braking system? Can you do brake fluid yourself? Why should a driver allow the brakes to cool before backing a long distance? Filtered by:. Previous template Next. Steve Winzar. Brakes: Primary and secondary brake shoes , PM.

Hi All. I believe the manuals say front primary shoe should have a shorter lining length than the rear secondary. In my case this analogy doesn't work for me. I had all the shoes for my '61 Hawk relined and radiused to fit. The lining length for front and rear shoes is the same, although they are positioned on the shoes differently. I have fitted all but the front left hand sets but I'm holding off on the last one 'cos now I have my doubts that maybe I've fitted 'em back to front.

Basically I'd like somebody to confirm whether the shoes in the diagram front RH side shown are the right way around or not. The shoes can be flipped around. So which one goes to the front? Last edited by Steve Winzar ; , PM. Tags: None. Secondary shoes can be longer, or they could be thicker or harder. Theory was since the secondary shoe, at least on a self energizing brake system, does more of the braking as compared to the primary shoe, that both would be equally worn down at the end of their service life.

I will say that most of the newly manufactured brake shoes I have been getting lately seem to have the same lining material on all shoes.

Maybe no one cares if more lining is left on the primary shoe when replacement is due. Comment Post Cancel. I think so many were getting put on wrong that it was decided to make all the shoes with the same size lining. Brake shoes fitted with brake linings friction material which press against the drums from the inside to generate braking force decelerate and stop are set inside of the drums. With this system, friction is generated by pressing the brake linings against the inside surfaces of the drums.

This friction converts kinetic energy into thermal energy. Drum rotation helps to press the shoes and the lining against the drum with more force, offering superior braking force in comparison with disc brakes. On the other hand, it is very important to design the components so that the heat from the thermal energy is dissipated efficiently into the atmosphere.

Drum brakes are a brake system with brake drums rotor which rotate with the wheels. Inside each drum are brake shoes fitted with brake linings friction material.

Pistons pressure mechanism press against the drums from the inside to generate braking force, thus making is possible to decelerate and stop the vehicle. When the driver steps on the brake pedal, the power is amplified by the brake booster servo system and changed into hydraulic pressure oil-pressure by the master cylinder. The pressure reaches the brakes on the wheels via tubing filled with brake oil brake fluid.

The delivered pressure pushes the pistons on the brakes of the four wheels. The pistons press the brake linings, which are friction materials, against the inside surfaces of the brake drums which rotate with the wheels. The linings are pressed on the rotating drums, which in turn decelerate the wheels, thereby slowing down and stopping the vehicle.