The pressure regulator is attached to the left side member of the frame

It adjusts the brake fluid pressure in the rear wheel brake circuit, depending on the vehicle load, which improves directional stability when braking

By monitoring rear axle loading through the load spring, it limits the fluid pressure in the rear brake circuit.

In case of failure, the regulator is replaced.

After replacing the adjuster or elements of the rear suspension, it is necessary to re-adjust the position of the load spring relative to the rear axle.

Replacing the regulator

Draining the brake fluid from the rear circuit Replacing the brake fluid and bleeding the brake system of a Gazelle car

Disconnect the load spring from the rear axle.

Replacing and adjusting the brake force regulator of a Gazelle carReplacement and adjustment Gazelle brake force regulator

Using the “12” key, we unscrew the two fittings of the brake pipes.

Keeping the bolts from turning with the “12” head, use the “13” key to unscrew the two nuts of the regulator fastening bolts.

Replacement and adjustment of the brake force regulator of the Gazelle car

We take out the bolts and remove the regulator from the car along with the bracket

Replacement and adjustment of the brake force regulator of the Gazelle carReplacement and adjustment of the brake force regulator of the Gazelle car

Using the “13” key, we unscrew the two nuts

Remove the bracket from the regulator.

Replacement and adjustment of the brake force regulator of the Gazelle carReplacement and adjustment of the brake force regulator of the Gazelle car

Use the “12” key to unscrew the fixing bolt.

Removing the load spring

Replacement and adjustment of the brake force regulator of the Gazelle carReplacing and adjusting the regulator braking forces of the Gazelle carReplacing and adjusting the regulator braking forces of a Gazelle car

Removing the pin

Remove the lever axis

Remove the lever

Having moved the parts to the new regulator, install it in reverse order.

Bleeding the system and adjusting the regulator.

Slider Adjustment

Replacement and adjustment of the brake force regulator of the Gazelle carReplacement and adjustment of the brake force regulator of the Gazelle car

With the “13” key, unscrew the strut nut and disconnect the load spring from the rear axle.

We lower the load spring down.

Use the “14” key to unscrew the locknut of the adjusting bolt

Replacement and adjustment of the brake force regulator of the Gazelle carReplacement and adjustment of the Gazelle brake force regulator

Using the “10” key, rotate the adjusting bolt

We set the distance between the center of the bracket hole and the axis of the regulator within 28–32 mm (for 4x2 type buses); 36–40 mm (for 4x4 type buses); 13–17 mm (for other types of vehicles)

While holding the adjusting bolt, tighten the locknut.

We fix the lower end of the rack on the rear axle bracket.

After adjustment, check the operation of the regulator, for which, at a speed of 50–60 km / h on a hard, dry road surface, we vigorously press the brake pedal, while the assistant should watch the wheels from the side.

With a good and properly adjusted regulator, there should be a slight lead in blocking the front wheels relative to the rear.

If the opposite happens, then, having unscrewed the locknut of the adjusting bolt, unscrew the bolt by half a turn.

If the front wheels lock before the rear wheels, turn the adjusting bolt half a turn and tighten the locknut.