To the braking system of the vehicle serve for a long time, reliably and without unpleasant surprises, should care. Including to pump the brakes.
brakepumping brakesbrake systembrake fluidbrake pedalbraking system
To the braking system of the vehicle serve for a long time, reliably and without unpleasant surprises, it should be maintained. Including to pump the brakes. Because bleeding brake system with ABS and electronic activation systems is possible only in conditions of service stations, and pumping system in which the pressure accumulator and the hydraulic module with valves is designed in the form of separate units, requires a scanner that reads the information from the ABS control unit, which also is only available at service stations, at home, or in a garage, terms available is only pumping a brake system without ABS.
Honestly, you can pump the brakes with ABS, in which the hydraulic module and the hydraulic accumulator are one unit, disabling the anti-lock system, but due to the complexity of the manipulations, I advise you to trust pumping the brake systems specialists from the service.
what is pumping the brakes
Due to a number of reasons (failure of individual parts of the brake system, replacing brake fluid or repair of brakes) hydraulic brakes along with brake fluid there is a certain amount of air. Since all the braking performance is built on the property of a liquid does not change its volume when physical impact, and the air, as you know, fairly well compressed, such undesirable neighborhood air is able to weaken the braking system, or even to bring it down. With the aim of completely to remove from the hydraulic system of the brakes of all the air without a trace and they are pumping.
When you need to pump the brakes
Pumping the brakes usually need one every two years or after driving the car 50-60 thousand kilometers. Is required bleeding the brake system after the repair and/or replacement of brake fluid.
Also need a pumping of the brakes when the braking system of the following symptoms:
— the brake pedal became "soft", needless spring;
— increase the working stroke of the brake pedal;
periodic failures of the same pedal;
— increase braking distance;
— leaving the car in the direction of the direction of motion during braking.
a Sequence of pumping the brakes
When pumping the brake system should strictly adhere to the order of pumping, which first pumped the brake the farthest from the main brake cylinder of the wheel, and then in the wheels, in order of decreasing distances from GTZ. For example, for the classic with the standard layout of brake circuits, the pumping sequence will be as follows: right rear wheel, left rear wheel, right front wheel and then the left front wheel.
In the case of diagonal brake circuits it is necessary to start from the right rear wheel, move to the left front, then bleed the left rear and complete the process by pumping the right front wheel.
In any case, be sure to read the sequence of pumping of the brakes, as outlined in the manual for your car!
bleeding the brakes
Fill the tank of a brake liquid to the maximum level. Suspended from the wheel, Unscrew and remove it.
Cleaned dirt from the outlet connection of the brake mechanism and take off the protective cap. Put on the plastic fitting, nylon or rubber tube, the second end of which is resting on the bottom of the jar poured in brake fluid so that the end of the tube was immersed in the liquid at the bottom of the jar.
Assistant with an interval of 1 second performs a vigorous pitching 3-4 pedal, keeping it pressed after the last rolling.
We turn on the outlet fitting approximately 1/2 turn. Thus from the tube in addition to the flow of the brake fluid will come out the air bubbles. After liquid stops flowing from the tube, turning back the fitting, and the assistant releases the brake pedal.
Topped up the brake fluid reservoir, do that 3-4 sharp pitching and locks the pedal in the depressed position. We turn on a tap, releasing a portion of the liquid with air. Tightening the fitting, the assistant releases the brake pedal.
Repeat the procedure of pumping up until from the pipe will not be exclusively one, without any air bubbles, brake fluid.
Remove the fitting with the tube and puts on his cap. The wheel is placed on the guide pins of the disc and safely secure it with bolts. Go to the next wheel.This procedure of pumping the brakes. Getting rid of trapped in the brake system of air, you will make it work reliable and smooth, and the car is safe and predictable.
Good luck to you!