When working with brake system pipes, care must be taken not to damage the plastic coating. Brake pipes are supplied mainly as pipes without union nuts. Pay attention to the size of the connecting thread. Put the union nut on the end of the pipe and flang the end of the pipe with a special tool. Pay attention to the design of the pipe end of the pipeline used. When bending, the old brake pipe is used as a sample. To avoid compression and kinking of the pipe, use a special tool for bending.
The operation of lifting and installing the vehicle on stands is associated with danger! Therefore, before carrying out the operation, read the Section Jacking and towing
1. Raise and place the vehicle on stands
2. Press the brake pedal slightly and fix it in this position. To do this, insert a wooden block between the seat and the brake pedal, move the seat back and then forward again. This will prevent fluid from leaking out of the reservoir and air from entering the system after disconnecting the brake pipes.
3. Disconnect the brake line in the area of the union nut.
4. If necessary, plug the line going towards the master cylinder.
5. Route the new brake line along the route of the old one. Tighten the union nuts to 18 N·m.
6. Bleed the brake system, refer to Section Bleeding the brake system.
- Are the brake hoses secured?
- Is the brake hose secured in the holder?
- Are the air bleed nipples tightened?
- Is there enough brake fluid?
- With the engine running, check for leaks. To do this, press the brake pedal with a force of 200-300 N (20-30 kg) for 10 s. The pedal should not weaken. Check all connections for leaks.
Brake fluid should never be poured out or thrown away with household waste. Local authorities inform drivers about possible disposal sites.
The original text of the article is available on the resource «BMWMan.ru»
