The pressure regulator changes the pressure in the hydraulic drive of the brake mechanisms of the rear wheels depending on the load on the rear axle of the car.

It is included in both circuits of the brake system, through it the brake fluid flows to both rear brake mechanisms.

Brake pressure regulator replacement

The regulator is bolted to the car body.

Its stem is connected to the rear suspension beam through a spring-loaded load rod, lever and earring.

Brake pressure regulator replacement

Depending on the distance between the beam and the body, which depends on the load of the car, the regulator rod moves, which, in turn, with the help of a valve system changes the cross-sectional area of the flow channels of the circuits inside the regulator, thereby limiting the pressure in the rear brake circuits.

The degree of limitation of the regulator, and, consequently, the pressure in the circuits is regulated by changing the length of the regulator rod with a nut.

To remove the regulator, you will need a special key for 11 brake tubes, a key for 13, a screwdriver.

Brake pressure regulator replacementBrake pressure regulator replacement

Unscrew the nuts of the attachment to the regulator of the four tubes and pull the tubes aside

We jam the holes in the regulator housing and the tube in accessible ways to prevent the leakage of brake fluid.

Brake pressure regulator replacementBrake pressure regulator replacement

We pry with a screwdriver, unfasten the lock of the load rod of the regulator

We remove the load rod by removing its ends from the holes in the bracket on the rear suspension beam and in the pressure regulator lever in the hydraulic drive of the rear brakes

Brake pressure regulator replacementBrake pressure regulator replacement

Unscrew the two bolts securing the regulator to the body

Removing the regulator

We install the regulator in reverse order.

Fill the brake fluid and pump the brake system (article - Replacement of brake fluid and pumping brakes Renault Sandero)

We check the efficiency of work by sudden braking on a site with a dry homogeneous coating.

After braking the car, get out of the car and inspect the brake tracks left by the wheels of the car.

Features of Renault Sandero brakes

The following ratios must be observed:

- L lev. lane. = L right lane.

- L lev. rear. = L is right. rear.

- L lane > L rear

The rear wheels should lock with a significant delay relative to the front ones.

If the rear wheels lock before the front wheels or simultaneously with them, or brake tracks from the rear wheels of different lengths, adjustment of the pressure regulator is required

Brake pressure regulator replacement

The force in the hydraulic drive of the rear brakes is changed by the adjusting nut "A" on the regulator lever.

Adjustment of the rear brake pressure regulator drive

When adjusting, the car must be in running order and stand on wheels.

Brake pressure regulator replacement

Adjust the rear brake pressure regulator, for which:

- unscrew the coupling bolt 2, Figure 2, of the adjusting coupling;

- install the adjusting clutch 3 of the drive lever so that it touches the lever 4 of the rear brake pressure regulator;

- tighten the tie bolt. The tightening torque of the bolt is 12 Nm (1.2 kgf.m).

When adjusting, it is not allowed to affect the nut 6 of the regulator rod