How to pump the brakes alone?

The pumping of the hydraulics of the brake system of a car should be carried out according to plan, when changing the oil, and after each work with the brake system: whether it be tuning, repair or replacement of consumables. Usually the brakes are pumped in car services, because it is a simple and inexpensive service, and nobody wants to get dirty in the brake fluid. But if it is a pleasure for you to maintain your car on your own, or it’s just not possible to drive to a car service center - you can pump the brakes yourself, which we have already written here. But not always there is a friend nearby who is ready to help, and then you have to cope yourself. Below are two ways to pump the brakes alone.

Method one

Preparation

For the first method you need the following:

  • tank to drain the old brake fluid (suitable for a half-liter bottle or jar)
  • hose of diameter suitable to the pumping nipple
  • clean cloth for cleaning fittings
  • car manual
  • new brake fluid with reserve
  • WD-40 (in case the braking nipples are soured)
  • a key for pumping the brakes or an ordinary open-end wrench for loosening the nipples (a special wrench for nipples will save edges when the nipple is tight)

And instead of an assistant you will need to find a reliable support for the brake pedal. Any log, or anti-theft steering lock will work. A lock can be inserted between the brake pedal and the driver's seat.

Pumping

Look for the scheme of pumping the brakes for your car in the instruction manual. If there is no circuit or manual, follow the standard procedure for pumping brake channels: starting from the far wheel from the master brake cylinder (GTZ). Usually the far - right rear, respectively, the order will be as follows: right rear, left rear, right front, left front.

  1. Fill the GTZ tank with new brake fluid up to the mark and tightly close it with a lid.
  2. Check that all fittings are unscrewed freely. If not, moisten the soured WD-40 fittings and wait until they are sour.
  3. Clean the fittings from contamination with a clean cloth.
  4. Put the hose on the first fitting farthest from the GTZ with one end, lower the other into the container prepared for draining.
  5. Press the brake pedal several times, squeeze it into the floor and fix it with a spacer: this will create an increased pressure in the hydraulic circuit of the brake system, which will squeeze the old brake fluid through the fitting with the air.
  6. Unscrew the nozzle so that the old brake fluid with bubbles starts to flow from the system into the container. Wait until all the air bubbles leave the channel.
  7. When a liquid without bubbles begins to flow, tighten the fitting.
  8. Repeat the previous manipulations with the three remaining unions in the indicated order. If the brake fluid stops flowing through the nozzle, then the pressure in the system has dropped. In this case, you need to tighten the fitting and press the brake pedal a few more times, just securing it after this strut.

While pumping the system do not forget to monitor the level of brake fluid in the tank of the main brake cylinder and keep it full. If the tank is empty, when you press the brake pedal into the system can get air.

Second way

Preparation

You will need:

  • clutch tank cover with rubber gasket (can be bought in the auto parts store)
  • valve from tubeless tire without nipple (nipple)
  • sealant
  • hose diameter suitable to the valve
  • hose of diameter suitable for a pumping port for draining
  • new brake fluid with reserve
  • car manual
  • clean cloth for cleaning fittings
  • tank to drain the old brake fluid
  • WD-40
  • a key for pumping brakes or an ordinary open-end wrench for loosening fittings
  • pumped up to 2 atmospheres reserve or compressor for forcing air into the GTZ tank

In contrast to the previous method, an increased pressure in the system is created not by depressing the brake pedal, but by forcing air into the tank of the main brake cylinder. To pump air, you will have to make a special cover for the tank.

  1. Drill a hole with a diameter of 11-12 mm in the purchased cover of the clutch reservoir.
  2. Insert the valve from the tubeless tire into the hole and fasten it to the cover with a sealant.
  3. Let the sealant harden.
  4. Slip one end of the hose over the valve.

Pumping

Look for a circuit for pumping brakes for your car in the instruction manual. If there is no circuit or manual, follow the standard procedure for pumping brake channels: starting from the far wheel from the master brake cylinder (GTZ).Usually the far - right rear, respectively, the order will be as follows: right rear, left rear, right front, left front.

  1. Fill the GTZ tank with new brake fluid up to the level and tightly close it with a lid with a hose.
  2. Put the free end of the hose on the spare tire nipple and drag it with wire so that it does not pick up air / connect to the compressor.
  3. Check that all fittings are loosely unscrewed. If not, moisten the soured WD-40 fittings and wait until they are shed.
  4. Put the drain hose on the first, farthest from the GTZ fitting with one end, lower the other into the container prepared for the drain.
  5. Untie the wire and straighten the hose so that the air from the tire begins to flow into the GTZ tank / turn on the compressor (the required pressure is from one and a half to two atmospheres).
  6. Unscrew the nozzle so that the old brake fluid with bubbles starts to flow from the system into the container.
  7. When the liquid begins to flow without bubbles, tighten the fitting.
  8. Shut off the air pressure in the tank GTZ
  9. Repeat the previous manipulations with the three remaining unions in the indicated order.

As with the first method, it is important to monitor the level of brake fluid in the tank of the main brake cylinder and, if necessary, add new one.

Both of these methods are suitable not only for pumping (air exhaust from the brake system), but also for flushing the brake system circuit and completely replacing the old brake fluid with a new one. To replace the fluid in the system, while pumping and draining the old fluid, wait until a new, clean fluid flows out of each nozzle. New fluid can be distinguished by color and consistency.

We remind you that if, after pumping the system, the brake pedal gives a “soft” stroke anyway, then this is a reason for diagnosing the brake system. The reason for this behavior of the pedal can serve as wear pads or discs.

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