Flexible Hoses — Checking and Replacing (Mercedes-Benz E-Class W123)

Every six months, the car should be lifted and the flexible hoses that connect the steel brake pipes to the front and rear brakes should be inspected for cracks, abrasions, leaks, bulges, or other damage. These hoses are an important and very vulnerable part of the braking system and should be inspected very carefully (you can use a mirror and a light bulb). If any defects are found on the hose, it should be replaced.

1. Using a wrench, disconnect the hose where it connects to the rigid line, and then unscrew it from the brake caliper or connector.

2. When installing the hose, make sure all bolts and threaded connections are clean. Use only your hands when screwing in the hose. After screwing in the hose, tighten it with a wrench.

3. After installing the hose, check that there are no sharp bends or twists in it. Make sure that the hose does not touch any suspension parts by turning the wheels to the extreme right and extreme left positions. If the hose touches the suspension, you should move the clamp plate on the hose bracket and move the hose.

4. Pour brake fluid into the reservoir and bleed the system.