Attention! Models with ABS (with or without ASC+T system) there is no need to disconnect the lines connecting the hydraulic unit to the master cylinder and accumulator (if it exists). If these lines were nevertheless disconnected and air got into the high pressure lines, bleeding these lines should be done at a specialized service station, as this requires special equipment.
Note. Read the warning at the beginning of paragraph 2 before you begin.
1. When replacing a pipe or hose, fluid leakage must be minimized. To do this, first remove the master cylinder reservoir cap. Then screw it back on with a piece of plastic wrap underneath to create an airtight seal. Another way is also possible - to clamp the flexible hoses with suitable clamps. Metal pipe connections can be plugged (being careful not to allow dirt to enter the system) or cover immediately after detaching them. To prevent liquid from spreading, place rags under disassembled connections.
2. When disconnecting the flexible hose, first loosen the pipe connection nut. and then remove the elastic clip that secures the hose to its support bracket.
3. When disassembling piping, it is recommended to use a fitting wrench of the appropriate size, which can be purchased from an auto parts store. If such a wrench is not available, use an open-end wrench with a snug fit to the edges of the nut. Still, if the nut is tightly tightened or corroded, then it is possible that when the key slips, its edges will be rounded. Most often, such a stubborn connection can only be unscrewed with a self-tightening wrench. But then, during assembly, the pipeline and damaged nuts must be replaced. Always clean the connection and its surroundings before loosening. Before disconnecting components that have multiple connections, remember their location before starting disassembly.
4. If you need to replace the brake system pipeline, you can order it from dealers. You will receive a pipeline of the required length with flared ends and nipples and nuts installed on it. After that, you need to bend it according to the model and install it on the car. Another way is also possible - to order the revision of the brake pipeline from the supplied set. At the same time, you must carefully measure the element being replaced so that a new one can be easily installed in its place. The most reliable thing is when purchasing a spare part, bring the failed part with you as a sample.
5. When installing, do not overtighten the nuts. To maintain the integrity of the connection, do not use brute force.
6. Watch for the correct laying of pipes and hoses, do not allow breaks, securely fasten them with clamps and brackets. After installation, remove a piece of plastic film from the reservoir and bleed the hydraulic system (see paragraph 2). Wash off any drips and check for leaks.