Attention: When processing the brake pipe, take care not to damage its polymer coating. Brake lines are supplied primarily as a commodity sold by the metre. In the manufacture of the brake pipeline, it is necessary to pay attention to the thread diameter of the fitting. Put the appropriate fitting on the pipeline and distribute the end of the pipeline using a special tool. Pay attention to the cutting of the end of the removed pipeline. When bending the pipeline, use the old pipeline as a sample. To avoid kinks and pinching, use a special bending tool.
Raise the car.
The brake pedal is easy to depress and hold down. To do this, install a board between the pedal and the seat as a spacer, moving the seat back and then forward accordingly. This prevents the brake fluid from escaping from the expansion tank and from entering the system with air after the brake line is disconnected.
Loosen cap nuts and remove brake line.
If necessary, plug the junction of the brake line with the brake master cylinder with a suitable plug.
Lay the new brake line on the same mast if possible. Tighten the threaded connection of the pipeline M12 to a torque of 15 Nm, and M10 to a torque of 20 Nm.
Caution: Do not route brake lines between electrical wires. Otherwise, as a result of grinding, the brake system or the electrical system may fail. The distance between the brake pipes and electrical wires must be less than 25 mm.
Remove air from the brake system.
Attention. Run a security compliance check:
- Are the brake lines tight?
- Is the brake hose in the holder?
- Are the bleed valves tight?
- Is there enough fluid in the brake system?
- With the engine running, perform a leak test. To do this, act on the brake carrion with a force of 200 to 300 N for about 10 seconds (from 20 to 30 kg). Do not release the brake pedal. Check all connections for tightness.
Note: Handle brake fluid as special waste.