Brake lines transport fluid to calipers, which then stop the wheels while moving. These are an essential element to your vehicle, so they should be replaced at the first sign of trouble. If your vehicle needs more force to brake, then it is likely your brake lines are failing. Properly installed brake lines secure your own safety and the safety of others on the road, so only attempt this procedure if you are experienced dealing with braking mechanisms.
Jack up the wheel with the broken brake line.
Support the vehicle with two jack stands, and chock the opposite wheels for extra security.
Take off the brake reservoir cap. The brake reservoir is located under the hood, and is a small tub with a cap on it.
Cover the opening with plastic wrap to prevent escaping fluid, and replace the cap.
Put a large cloth down under the brake lines to catch any leaks. Mop up any spillage with paper towels.
Take the wheel off by removing the lug nuts.
Clean around the brake line fittings to ensure that when they are removed dirt cannot enter the system.
Use a 10-mm flare nut wrench to loosen the brake line, and a 12-mm nut wrench for the banjo bolt.
Remove the brake line.
Plug the fender's brake line with a rubber vacuum hose plug, and then take out the stock lines.
Fit the banjo fitting and the washers into the wheel hub, and then torque the bolt to 15 to 21 foot-pounds.
Align the hex nut from the new brake line with the corresponding point from the bracket.
Tighten the fittings by hand, and attach the metal clips. Make certain that these clips are completely secure.
Torque the brake-line fittings to between 10 and 15 foot-pounds.
Fill the brake fluid box with brake fluid to its fill line.
Locate the bleed valve, a bolt located at the back of the brake system. Loosen the bleed valve with a box wrench, and place a rubber hose over the valve, ensuring it fits tightly.
Put the other end of the hose into a small bottle, such as a small soda bottle. This should already be filled 2 inches high with clean brake fluid.
Get a helper to repeatedly press down on the brake pads until you can see a bubble appear in the bottle.
Remove the hose, and tighten the bleed valve with a box wrench.
Test your brakes thoroughly before taking the vehicle onto the road.
