Metal pipes are particularly prone to damage and bending under a vehicle. Any such deformation may restrict the normal flow of fluid and therefore reduce the effect of the brakes. Rubber hoses should be checked for cracks or scratches; such damage may cause the hose to fail under pressure.
Extreme cleanliness must always be observed when removing or disconnecting lines. A small piece of dirt in the system can clog a passage, causing brake failure. Clean all connections before disassembling (use a stiff brush and clean brake fluid) and plug all lines and passages as soon as they are opened. New lines and hoses must be blown out or thoroughly flushed before installation to eliminate any contamination.
Removal and installation
1. Raise and securely support the vehicle.
2. Remove wheel(s) as necessary.
3. Clean the area around the joints that will be disconnected.
4. Place a tray under the joints that will be separated.
5. Disconnect the required pipes and hoses using two wrenches - one to hold the connection and the other to rotate.
6. Disconnect the other end of the pipe or hose, moving the drain pan if necessary. Always use two wrenches if possible.
7. Remove any fastening clamps or clips holding the pipe and remove the pipe.
8. If the system must remain open longer than the time required to relocate the lines, tape or plug the remaining lines and passages to prevent dirt and liquid from entering from the outside.
9. Install the new line or hose starting with the end furthest from the master cylinder. Connect the other end and check that both joints are properly seated. Tighten carefully with your fingers. Make sure the new line will not rub against other parts. Brake lines should be at least 13 mm away from the steering column and other moving parts. Any guards or insulators should be reinstalled in their original positions.
If you need to bend new metal tubing, do it carefully using a tubing bending tool. Do not attempt to bend it by hand; you may bend the pipe carelessly and damage it.
10. Using two wrenches, tighten each fitting to 13-17 Nm. Brake hoses connecting to the front or rear calipers should be tightened to 35 Nm. The lines connecting to the rear wheel cylinders (drum brakes) should be tightened to 19 Nm.
11. Install all fastening clamps or clamps on the pipes.
12. Fill the reservoir with clean, fresh brake fluid.
13. Bleed the brake system.
14. Install the wheels and lower the vehicle to the ground.
[Refer to the original source on the website hondabook.ru]