An experienced driver knows that the hydraulic hoses and lines are important and vulnerable part of the braking system. And so they should be carefully checked. This should be done every 20000km mileage or every two years. To do this, pick up the car and install it on the stand, and then check to see if the flexible hose cracks, leaks, blisters and other damage. Metal pipes are checked for corrosion. If the pipes or hoses have noticed these injuries, do not easily replaced. The replacement hoses need to start cleaning up the hose nozzle, and before that by preparing a special container to drain the fluid after removal of the hose. He is detached from the tube, you just need to let go of the nut fitting, remove the spring clamp and disconnect the hose from the bracket. Flexible hoses are disconnected from the slide, opening in the caliper is muffled. Installation run in reverse order. Thoroughly check that the brackets are in good condition, and all nuts tightened securely.
Hoses must not come into contact with the details of steering and suspension. To check and verify this, we need to turn the steering wheel in hand all the way to wallpaper. Upon completion of the replacement of hoses, you need to make removal of air from the hydraulic drive. When you replace the metal tubes should always install hydraulic pipes which are purchased in the service station manufacturer. Change the order of execution is as follows. Necessary to remove the tube and carefully measure the length, in which you want to pick up a new and bend it exactly in the removed. When bending, be careful not to damage the coating of the tubes. Minimum bend radius there must be at least 14mm. During installation, be sure to check that the new pipe exactly fit into the same bracket, which had just been shot, and that between the tube and warmed up and moving parts are large enough gap. Upon completion of the replacement tube must be removed from the hydraulic air. To do this, perform the pumping of the brakes. Removal of the entire air brake system in the BMW 3 (E30) produced in the sequence. First, the right rear wheel, following the left rear, then right front and left front recently. By following these rules in the description of the work.