What should I do if the air brake is released or it still can t be turned on

The size of the relay valve overflow of the shut-off brake only controls the handbrake.

The reaction speed has nothing to do with the foot brake, the air supply of the brake relay valve affects the braking performance, you said that the problem is to carefully check the brake shoes and brake camshafts.

Brake drums, the problem is definitely here.

When the air pressure is insufficient, the rear wheels will lock up, and only when the engine is pumping can it be unlocked. In addition, if the ice is frozen, it is recommended to heat up the car in the morning, and it is also possible to use a water purification separator.

After the shut-off brake is released, the car still can't go, probably because the handbrake is not completely returned, and the shut-off brake method is mostly used in the handbrake system of medium and large cars.

Therefore, the steps with air pressure operation need to be started, and then the air pressure is normal before it is useful.

How to release the air brake:1. Most of the air brake handles have buttons that can be pressed;

2. Press the button while pushing down the air brake handle to loosen it;

3. Some are a little below the air brake handle, and the same can be loosened as long as the button is pressed and the air brake handle is pushed downwards at the same time.

Introduction to the shut-off brake:The shut-off brake method is mostly used in the handbrake of medium and large cars.

The handbrake system of this car is usually in the state of constant braking with a strong spring, when the vehicle is to drive, the driver releases the handbrake is an inflatable action, and must reach a certain air pressure to open the spring, that is, the handbrake is released in order to drive.

Conventional braking is a handbrake that locks the propeller shaft.

When the foot brakes, compressed air enters the brake chamber and locks the wheels. In the event of mechanical failure of the handbrake or propeller shaft, the handbrake fails; When any part of the air pump, pipeline, air reservoir and brake valve fails, the foot brake fails. The shut-off brake can effectively avoid these dangers.

1. Possible causes:

If there is air leakage or damage in the brake, the normal foot brake is normal.

If the air pressure is normal, it may be that the sealing ring in the handbrake valve is broken, and the handbrake valve can be replaced.

Second, the way of shut-off brake is mostly used in the handbrake system of medium and large vehicles. The handbrake system of this car is usually in the state of constant braking with a strong spring, when the vehicle is going to drive, the driver releases the handbrake is a deflated action, and must reach a certain air pressure to open the spring, that is, the handbrake is loosened in order to drive.

Hello, it should be that there is a leak or damage to the air brake, the normal foot brake is normal, the air pressure is normal, it may be that the sealing ring inside the handbrake valve is broken, and the handbrake valve can be replaced. 4S shop professional technician, 10 minutes to solve. 】

How to lock off the air brake: 1. If the leather bowl of the sub-pump is damaged, fold off the connecting joint, block the nozzle with a 1 cent coin or copper sheet, and then tighten the joint, and after starting the pump, the air brake lock can be lifted; 2. If the pipeline is leaking, remove the leaking pipeline, block both ends of the pipeline with iron or copper sheets, and then tighten the nozzle joint, and after starting the pump, the air brake can be lifted. The shut-off brake method is mostly used in the handbrake system of medium and large vehicles.

The handbrake system of this car usually uses a strong spring to brake normally, when the vehicle is to drive, the driver releases the handbrake is an inflatable action, and must reach a certain air pressure to open the spring, that is, the handbrake is released in order to drive.

Hello, I have received your question, I will immediately sort out the answer for you, please wait a while How to release the lock-up of the air brake: 1. If the leather bowl of the sub-pump is damaged, fold off the connecting joint, seal the nozzle with a 1 cent coin or copper sheet, and then tighten the joint, and after starting the pump, the air brake lock can be lifted; 2. If the pipeline is leaking, remove the leaking pipeline, block both ends of the pipeline with iron or copper sheets, and then tighten the nozzle joint, and after starting the pump, the air brake can be lifted. The shut-off brake method is mostly used in the handbrake system of medium and large vehicles.

The handbrake system of this car usually uses a strong spring to brake normally, when the vehicle is to drive, the driver releases the handbrake is an inflatable action, and must reach a certain air pressure to open the spring, that is, the handbrake is released in order to drive.

Summary. Hello dear. The reasons why the air pressure cannot go up after the air brake is turned on are:

The first reason is the leakage of the inlet and outlet valves of the air pump; The second reason is that there is carbon deposits around the valve that affect the intake air and compressed air; The third reason is that the pipeline is blocked by carbon deposits, and the gas is not smooth. The solution to the air pressure that cannot go up after the air brake is turned on is: the first method is to remove the air compressor outlet pipe and press the air outlet with your thumb, if the exhaust pressure is low, the air compressor is faulty; The second method is to check the oil-drain plug or pressure regulator of the oil-water separator; The third method is to inspect the two check valves in the tee joint.

Finally, carry out targeted repairs!

Hello dear. The reasons why the air pressure cannot go up after the air brake is turned on are: the first reason is the leakage of the air pump inlet and outlet valves; The second reason is that there is carbon deposits around the valve that affect the intake air and compressed air; The third reason is that the pipeline is blocked by carbon deposits, and the gas is not smooth.

The solution to the air pressure that cannot go up after the air brake is turned on is: the first method is to remove the air compressor outlet pipe and press the air outlet with your thumb, if the exhaust pressure is low, the air compressor is faulty; The second method is to check the oil-drain plug or pressure regulator of the oil-water separator; The third method is to inspect the two check valves in the tee joint. Finally, carry out targeted repairs!

The air pressure is increased when the air brake is closed.

Dear, close the air pressure on the air brake to release an air pressure.

Here's how to turn off the air brake:

1. Release the air brake handle (the shirt matching is the position when driving), and then adjust it according to the normal brake adjustment method. The shut-off brake does not need to be adjusted separately;

2. The way of air brake is mostly used in the handbrake system of medium and large cars, the handbrake system of this car is usually in a constant braking state with a strong spring, when the vehicle is to drive, the driver releases the handbrake is an inflatable action, and must reach a certain air pressure to open the spring, that is, the handbrake is released in order to drive;

3. The conventional brake is the handbrake to lock the transmission shaft, and the foot brake is to enter the brake chamber by compressed air to lock the wheel. In the event of mechanical failure of the handbrake or transmission shaft or holder, the handbrake fails; When any part of the air pump, pipeline, air reservoir and brake valve fails, the foot brake fails. The shut-off brake can effectively avoid these dangers.

The shut-off brake is out of gas, the gear can't be taken off, it should be the gear gear holding back, press the clutch hard to try to hang the neutral gear If it doesn't work, pull the decompression handle Try it again If it doesn't work, use a wrench to turn the crankshaft slightly Try to hang the neutral gear It's not okay Use a wrench to unlock the air brake Push the car back and forth and then hang it up to neutral Operate the air brake and pay attention to safety If there are any of the above that can't be done by yourself Then find a car repairer!

First, unscrew the ejector rod on the brake cylinder until it rotates to the end. Then use the jack to prop up the rear wheel, turn the drive shaft, and the gear will be easily removed. Don't forget to reset the ejector rod of the sub-pump after taking it off.

Although it is a question of 15 years, it also gives a reference to friends who encounter this problem in the future.

The crowbar is not the rear wheel, and the bold can directly hit the car to take off the gear.

In the north, what car (except for the air brake of the big car) will not pull the handbrake, it is easy to freeze, not to mention that other cars in the southeast are the same, just hang the gear, and the automatic transmission hits the P gear.

To 7 gas in Songru or run gas is that the leather bowl is broken, or frozen, the method is frozen and replaced with a drying tank.