How to Remove Rear Brake Lines

1. Break the lug nuts loose on the rear wheels. Turn the lugs 45 degrees with a tire wrench, but do not unseat the wheel from the wheel hub it is attached to.
2. Raise the vehicle onto jack stands. Place wheel blocks in front of the front wheels.
Jack up on the front lift point behind the radiator and place a jack stand under each of the rear jack points. Then, lower the vehicle onto the jack stands.
3. Finish removing the lug nuts and pull the rear wheels off the hub.
4. Place the brake fluid catch pan underneath your vehicles rear brake caliper (the one you will be working on).
5. Slide the flare nut wrench over the brake tubing just behind the tube nut wrench that connects the hard brake line to the rubber brake line.
6. Orient the flare nut wrench so that it fits over the end of the tube nut.
7. Place an open-end wrench underneath the tube nut on the fitting for the rubber brake line.
8. Remove the protective retainer clip on the rear brake line to the brake hose bracket with a pair of pliers.
9. Hold the open-end wrench still and turn the flare nut wrench counterclockwise to remove the brake line.
10. Pull the brake line off the brake hose.
11. Follow the line to the connection underneath the hood.
12. Remove the brake line to proportioning valve connection with the flare nut wrench. The proportioning valve is a small valve with many brake lines connected to it. The exact location will vary depending on your vehicle.
13. Pull the brake line off the proportioning valve.

How to Replace the Brake Pads on a BMW 528i

1. Park the BMW in an area that will allow you to work on both sides of the vehicle. Loosen the lug nuts on the front wheels with the tire iron. Place the lifting jack beneath the frame on the left side of the vehicle. Lift the vehicle and place jack stands under the frame.
2. Turn the steering wheel to the right. This will allow for easier access to the caliper bolts on the left brake.
3. Unscrew the lug nuts and remove them. Pull the left wheel off the wheel bolts.
4. Remove the two caliper bolts with the 7-mm hex socket and ratchet. Pull the caliper from the rotor. Do not allow the brake caliper to hang freely; the tension from the weight of the caliper can disconnect the brake line. Rest the caliper on the removed tire, laid flat near the wheel well.
5. Remove the metal clips on the top and bottom of the caliper by prying them from the caliper with a flat screwdriver.
6. Remove the brake pads from the inner sides of the caliper. Inspect the rotor for scoring.
7. Place the C-clamp onto the piston and the outer edge of the caliper. Screw the clamp to force the piston into the side of the caliper. (The piston is the ring that sticks out from the inside of the caliper wall.)
8. Place the brake pads onto the inside of the caliper walls. Replace the metal clips on the top and bottom of the caliper. Squeeze the clips against the caliper until they snap into place, connecting to the caliper and locking the pads in place.
9. Place the caliper onto the brake rotor. Replace the caliper bolts and tighten them with the hex socket and ratchet.
10. Replace the brake pads on the left rear wheel as you did the front brake. (You will be unable to rotate the rotor on the rear brake to gain access to the caliper bolts as easily as on the front brake.)
11. Turn the steering wheel so that the wheels are pointed forward. Replace the left wheels onto the wheel bolts and screw on the lug nuts.
12. Lift the vehicle with the jack to remove the jack stands. Lower the vehicle and move to the right side of the BMW.
13. Place the jack beneath the frame, lift the BMW, and place the jack stands under the frame. Lower the vehicle onto the stands. Remove the lug nuts and wheels on the right side.
14. Turn the steering wheel to the left and replace the right front brake pads as you did the left side. Replace the rear brake pads.
15. Turn the steering wheel to the neutral position and replace the wheels and lug nuts on the left side. Remove the jack stands and lower the BMW to the ground.
16. Tighten the lug nuts on all four wheels with the tire iron.
17. Press the brake pedal slowly a few times, holding each depression for three seconds. This will replenish the brake fluid in the caliper piston that was displaced by forcing the piston open.