Description :

A car wheel cylinder is a crucial component of the hydraulic brake system in a vehicle. Its primary function is to convert hydraulic pressure generated by the master cylinder into mechanical force, which then actuates the brake shoes or brake pads to create friction against the brake drum or rotor, ultimately slowing down or stopping the vehicle.

1. Location: Typically found in the brake assembly of each wheel, there are two wheel cylinders per rear axle in most conventional brake systems. In vehicles with disc brakes on the front wheels, the wheel cylinder is located on the rear wheels.
2. Construction: The wheel cylinder is a cylindrical metal component usually made of cast iron or aluminum. It consists of a hollow cylinder with two pistons inside, each attached to a pushrod.
3. Hydraulic Connections: The wheel cylinder is connected to the brake fluid reservoir through brake lines. When the brake pedal is depressed, brake fluid is forced into the wheel cylinder, creating hydraulic pressure.
4. Pistons and Seals: Inside the wheel cylinder, there are two pistons, one on each side. These pistons move outward in response to the hydraulic pressure, causing the attached pushrods to press against the brake shoes or pads. Rubber seals ensure that the hydraulic fluid remains contained within the cylinder, preventing leaks.
5. Brake Shoes or Pads Engagement: As the pistons extend, they push the pushrods, which in turn force the brake shoes or pads against the brake drum or rotor. This action creates friction, generating the braking force required to slow down or stop the vehicle.
6. Return Springs: Wheel