Wuzheng agricultural tricycle vacuum assisted, but what is the reason why the brake brake does not m

This is normal because this is the role of the brake booster, which is the vacuum level obtained from the engine intake pipe.

The power source is stored in a vacuum tank, so this phenomenon occurs when the engine is turned off and the brake pedal is pressed a few times. If you find that the vacuum booster does not work during use, you should check the vacuum booster.

If the pedals are found to be heavy, an air seal test of the vacuum booster should be done by:

Method 1: Start the engine and turn off the engine after 1-2min, and brake the pedal with the force used in braking.

If you step on it several times, if the stroke is large for the first time, and the stroke is gradually reduced after that, it indicates that the vacuum booster is working well; If there is no change in each stroke, it indicates that the vacuum booster or vacuum line is leaking and should be repaired.

Method 2: When the engine is not running, press the brake pedal several times with the force used in the usual braking, confirm that there is no change in the pedal stroke, and then keep the brake pedal in the depressed position, and start the engine, if the pedal height drops slightly at this time, it indicates that the vacuum booster is working well.

Method 3: Press the brake pedal when the engine is running, then turn off the engine and keep the pedal in the depressed position, after about 30 seconds, if the pedal height does not change, it is well sealed; If the pedal has a pick-up phenomenon, it is an indication that the vacuum booster is faulty.

The reason why the brakes are too hard and can't be stepped on.

1. The vacuum booster pump of the car leaks or fails, you must know that the force of our brake pedal is increased by the brake booster pump, if it fails, the brake will not have the main force, then it will be difficult for us to step on.

2. After turning off the ignition, I stepped on the brake again, which is also related to the brake booster pump. The brake booster pump will only continuously produce vacuum when the engine is working, and when the engine is not working, it can only rely on the little vacuum power that has been left before, and it is generally gone after a few steps, but it will be restored after this start, and it is not a failure.

What to do if you encounter brake failure while driving.

1. Press the brake pedal several times to increase the probability of braking force recovery.

Once there is an accident with the brakes, you must know how to repeatedly press the brakes several times, which will put pressure on the braking system with air in the oil pipe, and then with repeated pressure, there is a chance that the braking force will be restored.

2. Turn on the emergency lights to remind the surrounding vehicles.

In the critical moment of brake failure, most car owners will only think about how to slow down the car, but forget to notify the surrounding cars. So while slowing down, turn on the lights and horn to tell the vehicle next to you to be careful, and then call the police for help.

3. Pull the handbrake.

If you have a mechanical handbrake, you should pull the handbrake slowly and let the brake force gradually increase. Because if you suddenly pull the handbrake vigorously, the rear wheel locking will cause side slip and be more dangerous.

If you have an electronic parking brake, you can also operate it, but you should pay more attention to the steering wheel at this time. At the same time, gradually downshifts are used to limit the speed of the vehicle by allowing the braking effect of the engine itself.

4. Friction deceleration.

Keep an eye out for objects that can collide on the left and right, remember not to hit head-on, hold the steering wheel with both hands, and use multiple minor collisions to force the speed of the car to decrease.

1. In this case, one is that there is a problem with the vacuum booster pumpThe brakes are hard to press without assistance. Another situation is that you step on the brakes again after the ignition is turned off, and the vacuum created by the vacuum booster pump makes you run out, and you can only rely on manpower to step on the brakes later.

The vacuum booster pump can only produce vacuum when the engine is working, forming a booster, and the engine will definitely no longer produce booster if it does not work, but there is still a little vacuum, and you will be completely gone after you step on the brakes after the engine is turned off.

2. During the normal driving of the vehicle, the brake assist system will monitor the brake pedal throughout the processThe system does not intervene during normal braking, and it is up to the driver to determine the amount of force applied when braking.

However, when the system detects that the driver suddenly presses the brake pedal at a very fast speed and force, it will be judged that emergency braking is needed, so it will automatically pressurize the braking system to enhance and produce the most powerful braking force, so that the vehicle and the driver and passengers can quickly get out of danger, at this time, the brakes will become very hard, and it has been handled by the system itself.

Common faults of agricultural tricycles.

1. V-belt torsion. Cause: The two pulleys are not aligned. Exclusion method: Adjust the position of the diesel engine so that the two belt wheels are aligned.

2. Clutch slippage. Reason: The friction plate is stained with oil, and the friction plate is seriously worn; The compression spring becomes weaker or breaks. Exclusion method: The clutch should be disassembled when the friction plate is stained with oil, washed and dried with gasoline, and the separation lever should be adjusted and replaced with a new spring when the spring force is weakened or broken.

If the vacuum brake pump fails, stop immediately, replace or repair the parts, and only after meeting the technical requirements can it be driven.

Because this is the function of the brake booster, the vacuum booster takes the vacuum power source from the intake pipe of the engine and stores it in a vacuum tank. This phenomenon occurs when the engine stalls and the brake pedal is pressed a few times.

If you find that the vacuum booster is not working during use, check the vacuum booster. If the pedals are found to be heavy, the vacuum booster should be tested for air tightness.

How the vacuum-assisted pump works.

The brake booster pump uses the principle of inhaling air when the engine is working, causing a vacuum on one side of the booster, which produces a pressure difference relative to the normal air pressure on the other side, and uses this pressure difference to strengthen the braking thrust. Even if there is only a small pressure difference between the two sides of the diaphragm, due to the large area of the diaphragm, a large thrust can still be generated to push the diaphragm towards the less pressure end.

In the working state, the push rod return spring makes the brake pedal in the initial position, at this moment, the check valve of the connection position between the vacuum tube and the vacuum booster is in the open state, inside the booster, the diaphragm divides it into the vacuum chamber and the application chamber, these two chambers can communicate with each other, both are isolated from the outside world most of the time, and the air chamber and the atmosphere can be connected by having two valve devices.

When the engine is running, press the brake pedal, under the effect of the push rod, the valve of the vacuum is closed, at the same time, the air valve at the other end of the push rod is opened, after the air enters (the reason for the gasping sound produced by pressing the brake pedal) will cause the air pressure in the cavity to be unbalanced, under the action of negative pressure, the diaphragm is pulled to one end of the brake master cylinder, and then the push rod of the brake master cylinder is driven, which realizes the function of further amplifying the leg force.

My car has vacuum brakes, no brakes at all, I don't understand it, and I don't want to be guided by the master.

The booster has been replaced, and the total oil pump has been replaced, and the empty car has braked at a slow speed, and the heavy car or fast car still has no brakes.

I changed to a new vacuum booster pump, but the steam could not be pumped in the tank, and the alarm was always given.

If the oil pipe on the master pump is loose and try again, if you can step on it, it means that there is a problem with the oil pipe or sub pump. If not, it's a matter of master or booster pumps.

What is the reason why the vacuum-assisted car killing brake does not respond?

Summary. Pro, Wuzheng tricycle has no brakes: check whether the pipeline is leaking, whether the brake pump is under pressure, and whether the brake cylinder is damaged.

If it is used for power, the passage between the socket and the battery on the body is broken. If it is used for ignition, there is a problem with the power generation and charging circuits.

Hello dear, the Wuzheng agricultural tricycle has no brakes, which may be due to the damage of the brake pads or the lack of brake fluid of the oil pump.

All the parts were replaced, and there were no brakes for a few days, and it was always like this.

Pro, Wuzheng noisy mountain tricycle has no brakes: check whether the pipeline is leaking, whether the brake pump is under pressure, and whether the brake cylinder is damaged. If it is used for power, it is the front rock passage between the socket and the battery on the car body that is broken.

If it is used for ignition, there is a problem with the power generation and charging circuits.

It's all changed, and there is no brake for a few days, and the brake fluid can be used for another day. Not again the next day. There are no brakes.

Pro, is the brake buried base pipeline or brake pump in the air, or, you can first open the bel bending hail rear wheel sub-pump of the release valve, the step is to open the opener valve in the rear wheel, the other person step on the brake, continue to step until the air is exhausted and then tightened, both rear wheels should be released (note that the brake oil storage tank can not be short of oil when deflating).

Pro, the tricycle has not braked when the chain is changed: first, the brake pot is seriously worn, and it is renewed. Second, the brake bench calls too much clearance, and it can be adjusted.

Third, when installing the brake pad, there is oil stain between the brake jujube source wagon and the brake pot, and it can be cleaned up. Fourth, caused by oil leakage of the half-shaft oil seal, replace the oil seal with a new one, and clean it up.

Summary. Hello, if the brakes of the tricycle of Wuzheng agricultural vehicles are not hard, this should be checked, whether there is oil leakage in your braking system and the brakes will become hard after stepping on several feet in a row, there are the following situations, the first is the existence of air in your braking system, and the second is that your brake master cylinder cannot be sealed after stepping on the brakes, resulting in pressure relief Since you said that there is no air, then you must check the brake master cylinder.

The brakes of the Wuzheng agricultural tricycle did not react, and it took several times to feel hard.

My car doesn't brake hard.

It takes several steps to set up the car.

What's with. The air was also put out without air.

If you put the air in it, you can't use it.

Hello, if the brakes of the tricycle of the five levy agricultural vehicles are not hard, this should be checked, whether there is oil leakage in your braking system Several brakes in a row will become hard, there are the following situations, the first is the existence of air in your braking system, and the first is to do the first to do your brake master cylinder after stepping on the brakes, the sealing ring can not be sealed, resulting in pressure relief Since you said that there is no air, then you must check the brake master cylinder.

It takes several steps to get there.

You can first check the brake master cylinder, remove it and look at the seal, or replace the seal before trying.

The tricycle's vacuum-assisted pump is leaking or malfunctioning.

The force of pressing the brake pedal is increased by the brake booster pump, if it fails, the brake will have no main force, then it will be difficult to press. If the brake is very hard and cannot be stepped on, and the brake is not good, it means that the vacuum power assist system is broken, and the vacuum power assist system can be replaced.

After the ignition was turned off, he stepped on the brakes, which is also related to the brake booster pump. The brake booster pump will only continuously produce vacuum when the engine is working, and when the engine is not working, it can only rely on the little vacuum power that was left before.

Vacuum-assisted braking principle.

Zhenqingmin air booster pump is mainly composed of pump body, rotor, slider, pump cover, gear, sealing ring and other parts. When the pump is working, the eccentric rotor with four sliders rotates in a counterclockwise direction, and the slider glides against the inner wall of the pump under the action of its own rotational motion, and the suction chamber continues to expand, and the pumped gas enters the suction chamber through the one-way valve opened by the suction branch trachea.

When the slider is turned to a certain position, the inhalation is complete. At this point, the inhaled gas is isolated, the rotor continues to rotate, and the isolated gas is gradually compressed – the pressure increases. When the studio is turned to communicate with the vent, the gas is vented through the vent.

During pump operation, the slide always divides the pump chamber into four chambers, and the rotor has four suction and exhaust processes for one revolution.

It is the use of the principle of inhaling air when the engine is working, causing a vacuum on one side of the booster pump, relative to the pressure difference of the normal air pressure on the other side, and using this pressure difference to strengthen the braking thrust.