Steel Brake Lines — Checking and Replacing (Mercedes-Benz E-Class W123)

When replacing brake lines, use only double-walled steel ones. The size of the line is determined by its outside diameter.

If you cannot get ready-made tubes, find suitable steel tubes and fittings similar to those you are going to replace. Determine the required length from the old tube and cut off the corresponding section of new tube, adding about 12-14 mm at the ends for rolling.

1. Install the fittings onto the ends of the new tube and flare the joints.

2. Shape the tube according to the old shape.

3. If you do not have the necessary equipment, you can take the tubes to a service station for flaring and bending.

4. When installing a new brake tube, make sure that there is at least a 3/4-inch gap between it and any moving parts.