How to Replace Brakelines

Brake lines can be made of several materials, but the most common is rubber, which can become worn or broken over time. Broken brake lines should be replaced immediately, as they will prevent the automobiles braking system from functioning. The brake system is powered by hydraulic pressure that travels to each tire. The brake lines transport this power when pressure is applied by the driver to the brake pedal. Replacing brake lines requires some background knowledge in auto repair.

Instructions

1

Determine the location of the connection points between the brake lines and the braking system. One end of each line will be behind the brake disc of each wheel. The other end of each brakes connection will be at a steel line on the underside of your autos frame. Consult your auto owners manual for the exact location of the connections.

2

Detach the brake lines from each connection point. Turn the bolts clockwise with an adjustable wrench at each connection point. Place a bucket under the connection on which you are working. This will be needed to catch the brake fluid.

3

Attach appropriately sized new brake lines to the connection points from which you removed the old brake lines. Secure them in place by turning the bolt at each connection point clockwise using the adjustable wrench.

4

Replace the lost brake fluid in the brake fluid reservoir. This is located near the firewall under the hood of your automobile. Pour new brake fluid into the brake fluid reservoir until it reaches the fill line.

5

Bleed all of the air from the brake system that entered during the replacement process. Have an assistant apply pressure to the brake pedal inside the automobile. Open the bleed valve located on each wheel while this pressure is applied to the brake pedal. Do one wheel at a time. Turn the valve counterclockwise with your hand to open it. Close the valve by turning it clockwise with your hand. Start with the wheel that is furthest from the brake fluid reservoir, working your way from the back of the automobile toward the front. Too much air in a brake system can cause the brakes to fail.

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