On current drum brake systems, brake wheel cylinders are a component. When the brake pedal is depressed, the hydraulic component expands to force the brake shoes against the brake drum. They will ultimately need to be changed because they are a hydraulic component that is subjected to the hard circumstances of braking and standard wear and tear.
When braking wheel cylinders fail, they frequently exhibit a number of indications that tell the driver that replacement is needed.
If your car is operated on the brake drum system, check MOT history online to confirm how many times the braking system was a reason for a MOT failure and if the wheel cylinder was the culprit.
A hydraulic drum braking system includes a wheel cylinder. It is found in each wheel and is normally found above the shoes at the top of the wheel. The role of wheel cylinder is to apply force to the shoes, causing them to come into contact with the drum and causing the vehicle to stop due to friction.