We replace the fluid in the hydraulic drives of the brakes and clutch every 90 thousand kilometers or after three years.

We install the car on a viewing ditch or a lift.

Brake fluid change and brake bleeding Renault SanderoBrake fluid change and brake bleeding Renault Sandero

Unscrew the cap of the reservoir of the main brake cylinder

We pump out the old liquid from the tank with a rubber bulb or syringe.

Brake fluid change and brake bleeding Renault Sandero

Pour new DOT-4 working fluid into the tank.

We bleed the brake and clutch hydraulic drives until the new fluid (lighter than the old one) starts to come out of the bleed valves of all working cylinders.

After bleeding the brake and clutch hydraulic drives, we bring the fluid level in the reservoir to normal.

Bleeding the brakes

We remove air from the system with the engine off, first from one circuit, and then from another in the following sequence:

— brake mechanism of the right rear wheel;

— brake mechanism of the left front wheel;

— brake mechanism of the left rear wheel;

— the brake mechanism of the right front wheel.

If air gets into one of the circuits, it is enough to bleed only this circuit, and not the entire hydraulic drive.

Before pumping, we check the level of the working fluid in the reservoir of hydraulic brake and clutch drives and, if necessary, add fluid.

Replacing Renault Sandero brake fluidBleeding Renault Sandero brakes

We clean the bleeder valve of the brake mechanism of the right rear wheel from dirt and remove the protective cap from it.

Loosen the bleeder valve with a ring wrench or a head of 8.

We put a hose on the fitting, and immerse its free end in a container partially filled with working fluid.

Brake fluid change and brake bleeding Renault Sandero

The assistant should vigorously press the brake pedal to the stop 4-5 times and keep it pressed.

Using an 8 key, we unscrew the bleed valve by ½ - ¾ turn.

In this case, fluid with air bubbles will flow out of the hose, and the brake pedal will move forward.

As soon as the liquid stops flowing out of the hose (while the pedal should reach the stop), we wrap the fitting, and only after that the assistant can release the pedal.

Repeat pumping until air bubbles appear in the fluid coming out of the hose. We remove the hose, wipe the bleeder dry and put a protective cap on it.

Brake fluid change and brake bleeding Renault Sandero

We bleed the brake mechanism of the left front wheel as described above, unscrewing the bleed valve with a key by 9.

In the same way, we pump the brake mechanisms of another circuit.

When pumping, you need to monitor the fluid level in the tank and add fluid if necessary.

If, when you press the brake pedal, we feel its “softness” and increased travel, it means that there is air in the system.

In this case, repeat pumping until the pedal becomes "hard" and when pressed, go no more than half the distance to the floor.

If the air cannot be removed, we check the tightness of the connections, pipelines, hoses, main and working cylinders.