How do you vent when you change brake fluid? I changed the brake fluid, and the brakes were still so

The air exhaust operation is carried out by two people, and the air in the hydraulic line should be discharged after replacing or replenishing the brake fluid.

A person continuously presses the brake pedal in the cab to raise the pedal position and stabilize the brake pedal without loosening.

At this point, another person under the car unscrews the bleed valve, allowing the air in the line to drain along with the brake fluid. When the pedal position is lowered, tighten the bleed valve immediately.

This is repeated several times until no air bubbles are expelled from the plastic tube. Tighten the bleed valve and install the dust jacket.

According to the above method, the other sub-pumps are deflated in turn. When venting, the brake fluid should be checked and replenished while the air is being exhausted until the air is completely discharged.

The reservoir is then filled with a sufficient amount of brake fluid of the specified variety.

Press the brake pedal several times, and the last one step is not loosened, and the other person goes to loosen the brake cylinder exhaust valve, so as to eliminate the other four wheels.

How do you exhaust car brake fluid? The order of automobile brake oil exhaust should be deflated according to the principle of far and near, and the exhaust sequence of the car is the right rear wheel, the left rear wheel, the right front wheel, and the left front wheel.

Now there is a machine to change the oil, if there is no artificial air exhaust method, continue to step on the brake pedal, step on the end to keep still, another person then find the brake cylinder on the air screw loosen and discharge, and then tighten, the person in the car then release the brake pedal, repeat this step until the brake cylinder shoots out of the oil without bubbles and has a certain pressure, pay attention to timely refueling to the brake oil cup, maintain the amount of oil.

Summary. Hello friends, the reasons and treatment methods related to replacing the brake fluid, exhausting air or brake soft after replacing the brake fluid are as follows.

First, if there is a problem with the vehicle's brake master cylinder, it is recommended to check the brake master cylinder first, and if the pressure is relieved, the brake master cylinder needs to be replaced.

The second is that there is air in the ABS pump, so this is the need to use a special computer to do the emptying process of the ABS pump.

I changed the brake fluid, and the brakes were still soft

Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

Hello friends, the reasons and treatment methods related to replacing the brake fluid, exhausting air or brake soft after replacing the brake fluid are as follows. First, if there is a problem with the vehicle's brake master cylinder, it is recommended to check the brake master cylinder first, and if the pressure is relieved, the brake master cylinder needs to be replaced. The second is that there is air in the ABS pump, so this is the need to use a special computer to do the emptying process of the ABS pump.

The air in the third vehicle brake pipeline is recommended to be done with special vacuum equipment, emptying treatment, the first time to change the brake oil, with the most primitive method, the middle of the exhaust gas or not, thinking that the brake oil is not good, and then changed the second time, with the air pump to change, today is still not good.

If you have an ABS pump, use a dedicated computer to empty the ABS pump.

Is there an Accord in Yashiro.

The Yashiro Accord has ABS exploded.

Exhaust air is needed to accompany the seller because of the change of brake fluid.

, air will enter the brake line. The presence of air in the brake lines may lead to the failure of the brake system.

The air discharge sequence should be implemented from the right rear wheel, left rear wheel, right front wheel, left front wheel, and clutch master cylinder.

When releasing the air, first press the brake pedal 5 or 6 times in a row, and then press it, at this time, you should immediately relax the air screw of the right rear wheel brake cylinder and then tighten it instantly, and so on until the brake oil is shot out in a straight line from the air screw (the fuel injection is strong and no bubbles are generated).

When venting the air, remember that the brake fluid must never be lacking in the brake master cylinder and must be kept full.

Repeat the above steps until the new oil is drained, and finally tighten the drain bolt and the air is drained.

If possible, it is best to use the instrument replacement, which is convenient and fast.

Because when the brake fluid is changed, there will be air entering the pipe, when there is air entering the pipe, when the brake is pressed, the air in the pipe will affect the braking effect, resulting in a decrease in braking force, which will have a safety impact.

Therefore, when changing the brake fluid, it is necessary to drain the air cleanly, and the air and brake fluid cannot enter the pipeline together, which will affect the braking effect of the car and avoid the lack of braking force of the car.

Generally, repair shops or 4S shops will exhaust air when changing the brake fluid of the car, and the process of exhausting the air will be repeated many times to ensure that no air and brake fluid enter the pipe together.

Because there is air in the oil pipe, the brakes will not work, and I am really helping you look forward to adoption

Do I need to vent air now to change the brake fluid? Have you ever changed your brake fluid? The key to this is to see how you change the brake fluid, if you drain all the old brake fluid first or suck it up and then add new oil, then be sure to exhaust the air.

If the oil is changed by the substitution method, then as long as the method is done properly, there is no need to exhaust the air, because the air is not in the first place. 1. The most critical thing to replace the brake fluid is to remove the air from the whole process, usually according to the differences between the equipment, there are two different replacement methods: (1) The first method is more common in ordinary repair shops, using a vacuum pumping machine to suck the brake oil out of the oil drain, and then add new brake oil and continue to suck until the discharged brake oil is clear and there is no air.

2) The second type is to change the brake fluid by changing it. The principle is to press the new brake oil in by air pressure in a fully enclosed situation and eject the dirty oil. However, the equipment is more expensive, but the function is very simple, and only the more powerful repair shops and 4S shops will buy it.

2. To sum up, it is the way to replace the brake fluid, therefore, replacing the brake fluid requires exhaust air, I hope it can help you. In general, there is no need to exhaust air. However, there is a concern that air will be brought in when the brake fluid is changed, which will affect the braking effect when braking.

When the brake oil is refueled, the oil in the oil cup is sucked out, after filling, the hose is connected to the deflating screw of the sub-cylinder, and the brake is directly stepped on after starting the car, and the oil in the pipeline is discharged and replaced, pay attention to the oil of the brake oil cup to be replenished at any time, so that the operation will not enter the air, if the operation is not careful, the air enters the pipeline, then it is necessary to exhaust the air, because the brake fluid is incompressible, and the air can be compressed, if there is gas, the brake force will be reduced. @2019

It is definitely needed, to vent the brake fluid of the car, a person needs to open the brake fluid first.

Add the lid of the can, then fill up the brake fluid to the highest place, at this time step on the brake do not slam and move, the other person loosens the grease nozzle and tightens it, repeat 5 times.

The sub-pump of the car and the sub-pump pipe and the master pump are connected independently, so the air will not be said to flow between the different sub-pumps, so no matter which one we put first, it will not affect the exhaust result. Mainly when the operation continues to step on the brake and does not let go, tighten the oil nozzle of the sub-pump for two seconds, and then relax, and then tighten again, and each sub-pump is repeatedly operated 3-5 times under the branch bridge, and the basic gas can be exhausted.

Need, with infiltration to envy the car brake oil exhaust, a person needs to open the lid of the brake fluid addition tank first, and then fill the brake fluid to the highest place, at this time step on the brake do not move, and the other stupid person outside the spine loosens the grease nozzle and then tightens.

Changing the operation process of automobile brake fluid.

1.Place the vehicle on a trench or lift it with a lift.

2.One person in the car, take off the rubber dust cap on the oil port, prepare the two ends of the transparent hose in the oil port and waste oil collection bottle, and then use a wrench to loosen the oil port screw in the counterclockwise direction, and at the same time the person in the car repeatedly press the brake pedal. At this time, the brake fluid will be sprayed out of the oil drain, and the liquid level in the brake fluid reservoir should be added as the fluid level drops.

Tighten the oil drain screw after the oil is clear.

Let A3The person in the car repeatedly presses the brake pedal to the highest point and presses the brake pedal without letting go, and the person under the car loosens the screw of the oil drain port of the slippery forest, and tightens it after the brake fluid is sprayed clean and notifies the person in the car to loosen. Repeat this several times until there are no bubbles in the released brake fluid.

The idea is that the liquid level in the brake fluid reservoir should be added as the fluid level drops.

4.Repeat steps 1 3 above to another round.

5.The order of replacing the brake fluid should be far and then near, that is, starting from the far end of the brake line, then the wheel, and then the front wheel. If you are particularly concerned, because the brake line is an "X" layout, in order to avoid the mixing of new and old oil, the oil change and deflation can start from the left rear or right rear, such as the first left rear wheel, the next right front wheel, then the right rear wheel, and finally the left front wheel.

6.After the replacement of the four wheels is completed, if the brake is found to be soft and insensitive, please repeat step 3 for deflation operation, and the order is carried out in accordance with step 5. The idea is that the liquid level in the brake fluid reservoir should be added as the fluid level drops.