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Difference Between Primary And Secondary Brake Shoes

date 2022-06-08

The Difference Between Primary And Secondary Brake Shoes

If you're wondering how to distinguish between primary and secondary brake shoes, this article is for you. It will explain the differences between the two types of brake shoes and why they're important for your car's safety. First, let's clarify the function of these brake shoes. If your car's brakes are a single function, they can work well, but they can't work well together. The primary brake shoe, on the other hand, works in tandem with the secondary brake shoes to stop the car.

Primary And Secondary Brake Shoes

Brake Shoes

It is common to replace one side of your brake shoes at a time. However, there are some differences in the thickness of these two types of shoes. This article will explore the differences between primary and secondary spring models. Learn the difference between these two types of shoes for your car. You'll be amazed at the difference between primary and secondary shoes! Hopefully, this information will help you make the best choice for your car!

Basically, the primary shoe is the one on the front of the wheel that jams against the brake drum. In contrast, the secondary shoe has a much longer lining that is energized by the wheel cylinder's piston hydraulic pressure. Ultimately, both shoes should have the same amount of force, but it's important to know which is which. You can determine which style of brake shoes you need by consulting your truck's service manual or referring to a manual.

Brake Shoe

Primary Brake Shoes

When comparing the brake system of a truck, it is important to understand the differences between primary and secondary brake shoes. Primary shoes are yellow in color while secondary ones are blue. In the mid-80s, I was taught to distinguish between these two shoes when I was in vocational technical school. I also learned about them when reading a Mack service manual. In VO-TECH, they were taught to distinguish between primary and secondary brake shoes.

The primary and secondary brake shoe assemblies are composed of two parts: the shoe assembly itself and the lining for the shoe. Both have a lining that subtends an arc of about 70 degrees relative to the horizontal center line 48 of the brake shoe assembly. The shoe end is thinner than the rest of the lining. During braking, the primary shoe is in contact with the lining for the duration of the arc.

The primary brake shoe is located in the front of the vehicle and is responsible for applying a greater force against the direction of rotation. It is typically made from different materials than its secondary counterpart and is often the shorter of the two. It is held in place by a return spring, which allows it to return to its original position. When applied, a wheel cylinder piston forces the primary shoe against the rotating brake drum surface. This in turn causes it to rotate with the drum, providing the necessary friction needed to slow down or stop the vehicle.

Brake Shoe

Secondary Brake Shoes

The difference between primary and secondary brake shoes lies in the type of lining used. The primary shoes are thinner than the secondary ones, which are thicker. The latter type of lining prevents the top metal from dragging against the brake drum. Primary shoes are installed before the secondary ones. In addition, the primary shoe's spring is supposed to be installed before the secondary one. This design allows more tension to be placed on the secondary spring, so that the front one does not rub against the rear brake drum.

Secondary brake shoes are made from a combination of materials that increase the wear and life of a brake. Hence, the lining is not affected by temperature changes. The friction material can be a combination of graphite, cashew nut shell, or a metal powder. The lining material may also include binders and curing agents. In addition, rubber chips can be used as a sound-dampening agent.

Brake Shoe

Primary And Secondary Brake Shoes Difference

What Are the Differences Between Primary And Secondary Brake Shoes? If you drive a truck, you probably know the difference between the primary and secondary brake shoes. Primary shoes have a thicker pad and are more prone to jamming against the drum. Secondary shoes, on the other hand, are thinner, but they still energize the rear brake. They also have different linings. Running both types of shoes at the same time may reduce braking power and cause premature lining wear.

The primary and secondary brake shoes are different in their friction materials and mechanics. The primary shoe has a lower friction material and is larger than the secondary one. The rear brake shoe, on the other hand, has a smaller friction area, which makes it the leading shoe. In a duo-servo braking system, the primary and secondary shoes are connected to one wheel cylinder via a lower connection and star adjuster. In this system, a hydraulic force expands the wheel cylinder and forces the top parts of both brake shoes outward. The downward friction grabs the primary shoe.


Where to buy brake shoe?

Longway Machinery is a leading brake chamber manufacturer & factory that focuses on brake shoe OEM. We solemnly promise to provide your products with excellent quality, reasonable prices and the highest cost performance.

Welcome to choose Longway Machinery - a leading brake shoes manufacturer & factory.

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Add: Xishan Industrial Area, Renhe, Yuhang District, Hangzhou,China, 310006

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