Bleeding the brakes (Nissan Primera P10)

Bleeding the brakes is required if the system has been opened in any place, or air has entered it in another way. Before bleeding the brakes, remove dirt and foreign bodies from the bleeding valves and remove the cover of the expansion tank.

If only one wheel cylinder or caliper was disconnected, it is usually sufficient to bleed only the corresponding circuit, i.e. the front left and rear right brake or the front right and rear left brake. Otherwise, bleeding can be started from both the front and rear brakes, but it is best to follow the sequence recommended by the manufacturer: rear left, front right, rear right and front left brakes. There are many devices available in auto shops for bleeding without assistance. When using one of these devices, you should follow the instructions for it. Otherwise, you must resort to the help of an assistant.

1. After removing the boot, attach a transparent hose to the corresponding bleeder valve. Place the other end of the hose in a bottle filled with some brake fluid.

2. Have an assistant press the brake pedal to the floor. Open the bleeder valve half a turn when the pedal is at the floor. Watch the brake fluid flow out of the hose.

3. When air bubbles stop appearing in the fluid, the air has been removed. During the last pumping, leave the pedal at the floor and close the bleed valve. Slowly release the pedal.

4. Perform the same operation on the other bleed valves in the specified sequence.

It is important to pay attention to the fact that it is necessary to monitor the level of brake fluid in the reservoir so that air cannot enter the system through the reservoir. Never pour liquid pumped out of the system into the reservoir. Do not use brake fluid that has been in an unsealed container for a long time.