How Drum Brake Works?

1 minuteread

Normal Braking:

When the brakes are applied, brake fluid is forced struggling from the cylinder into the wheel cylinder, which successively pushes the brake shoes into contact with the machined surface of the drum. This rubbing action reduces the rotation of the cylinder, which is coupled to the wheel. Hence the speed of the vehicle is reduced. When the pressure is released, return springs pull the shoes back to their rest position.


Automatic Self-Adjustment:

As the brake linings wear, the shoes must travel a greater distance to achieve the drum. In systems fitted with automatic adjusters, when space reaches a specific point, a self-adjusting mechanism automatically reacts by adjusting the remainder position of the shoes so that they’re closer to the drum.

Here, the adjusting lever rocks enough to advance the adjuster gear by one tooth. The adjuster has threads on that, sort of a bolt, so that it unscrews a bit when it turns, lengthening to fill in the gap. When the brake shoes wear a bit more, the adjuster can advance again, so it always keeps the shoes near the drum. Typically the adjusters only operate when the vehicle goes in reverse and the brakes are engaged.


Parking/Emergency Brake:

The parking (or emergency) brake controls the brakes through a series of steel cables that are connected to either a hand lever or a pedal. The concept is that the system is fully mechanical and completely bypasses the mechanism so that the vehicle may be dropped at a stop whether or not there’s a complete breakdown. Here the cable pulls on a lever mounted in the brake and is directly connected to the brake shoes. This has the effect of bypassing the wheel cylinder and controlling the brakes directly.

A to Z All Answers About Japan Used Cars

Technical FAQ's

Read and learn about car Technical FAQ and get in-depth details of the car features.


Japan Auto Auction

Check out the details and procedure to buy used cars from Japan auto auction.


Japan Used Car Inspection

Read and get instant knowledge about the procedures of Japan used car Inspection.


Overseas Freight

Check out Overseas Freight Rates and Charges Details to import Japan used cars in your country.


Import Documentation

Read about the procedure & documents required while importing used vehicles from Japan.



Check out and read how is shipping done and how a car is being shipped from one country to another country.



Avoid fraud & scams and make a secure payment to import used cars from Japan to anywhere across the globe.


General FAQ's

Read and get the basic knowledge about car maintenance, and in-depth details of cars.


Import Regulations

Check out the rules & regulations in all countries to import Japan used cars.


Japan Used Cars

Check out the details of the best Japan used cars and how to buy them.


Previous Post
Next Post

Related Knowledge Base Posts

Leave a Reply

Your email address will not be published. Required fields are marked *

Want to Buy Used Cars from Japan?

More than 70,000 Japanese Used Cars available on sale from trusted Japan Car Exporters

What Is Jct Images

WHO WE ARE (JCT) the most trusted & free Japan used vehicle portal that connects overseas buyers to Japan used vehicle exporters since 2005.
JCT does not charge any commission, transaction fee or any hidden cost from buyer or exporter. All deals are directly between buyers & exporters that is saves your hard earned money from 10% ~ 50% of car cost.

JCT is associated with JUMVEA (Japan Used Motor Vehicles Exporters Association), SAFE TRADE (JUMVEA Safe Trade for 100% Money Back Guarantee), SLAAJ (Sri Lanka Automobile Exporters Association in Japan) & SLBCJ (Sri Lanka Business Council of Japan) to connect established, trusted & reliable exporters for safe & secured business from Japan.

Welcome to Our Website