A rear wheel cylinder is a very important part of the car's breaking system. It has several functions.
- A line from the master cylinder to the rear cylinder carries break fluid directly to the rear brakes. The master cylinder then dispenses the brake fluid to moving parts of the brakes.
- The harder you push on the brake pedal, the more brake fluid is released into the moving parts of the brakes.
- Different types of braking systems use different sizes of rear wheel cylinders.
- Defective or worn rear wheel cylinders can cause braking problems and brake failure, so they need to be kept in good repair.