How to deal with air leakage from brake cylinder
Air leakage from the brake cylinder is one of the common problems in the vehicle braking system. If not handled in time, it may cause brake failure and seriously affect driving safety. This article will introduce in detail the causes, symptoms, treatment methods and related data of brake cylinder leakage to help car owners quickly solve the problem.
1. Causes of air leakage in the brake cylinder
Brake cylinder leaks are usually caused by the following reasons:
| Reason | Description |
|---|---|
| Seal aging | After long-term use, the sealing ring will age and deform, causing air leakage. |
| Piston wear of wheel pump | The surface of the piston is worn or scratched, resulting in a loose seal. |
| Brake fluid contamination | Impurities mixed into the brake fluid accelerate the wear of the seal ring. |
| Improper installation | The wheel pump or sealing ring was not installed correctly during maintenance. |
2. Symptoms of brake cylinder leakage
When the brake cylinder leaks air, the vehicle will exhibit the following symptoms:
| Symptoms | Description |
|---|---|
| Brake pedal becomes soft | The brake pedal feels weak when depressed and the braking effect is reduced. |
| Extended braking distance | The vehicle requires a longer distance to come to a complete stop. |
| brake fluid reduction | The level in the brake fluid reservoir has dropped significantly. |
| Abnormal noise | A "hissing" sound of air leakage is heard when braking. |
3. How to deal with air leakage from the brake cylinder
If you find air leakage from the brake cylinder, you can follow the following steps:
| steps | Operating Instructions |
|---|---|
| 1. Check the location of air leakage | Find the leaking wheel cylinder and confirm whether it is a problem with the sealing ring or the wheel cylinder body. |
| 2. Replace the sealing ring | If the sealing ring is aged or damaged, replace it with a new one. |
| 3. Replace the wheel pump | If the piston or cylinder of the wheel cylinder is damaged, the entire wheel cylinder needs to be replaced. |
| 4. Exhaust air | After replacement, the brake system needs to be bled. |
| 5. Test the braking effect | Test the braking performance on the road to ensure there are no abnormalities. |
4. Measures to Prevent Air Leakage of the Brake Wheel Cylinder
In order to extend the service life of the brake cylinder, car owners can take the following preventive measures:
| measures | Description |
|---|---|
| Check brake fluid regularly | Make sure the brake fluid is clean and prevent impurities from entering the wheel cylinder. |
| Change brake fluid | Replace brake fluid every 2 years or 40,000 kilometers. |
| Avoid violent driving | Reduce sudden braking and reduce the wheel cylinder load. |
| Regular maintenance | Check the brake system status during every maintenance. |
5. Brake cylinder repair cost reference
The maintenance costs of brake cylinders vary between different models. The following is a reference for the maintenance costs of common models:
| car model | Cost of replacing sealing ring (yuan) | Cost of replacing wheel pump assembly (yuan) |
|---|---|---|
| Volkswagen Lavida | 200-300 | 500-800 |
| Toyota Corolla | 250-350 | 600-900 |
| Honda Civic | 300-400 | 700-1000 |
| Nissan Sylphy | 200-350 | 550-850 |
6. Summary
Air leakage from the brake cylinder is an important issue affecting driving safety. Car owners should check the brake system regularly and deal with air leakage promptly if any air leakage is found. If the sealing ring is aging, just replace the sealing ring; if the wheel pump is damaged, the assembly needs to be replaced. After repair, be sure to bleed the air and test the braking effect to ensure driving safety. Paying attention to daily maintenance and correct driving habits can effectively extend the service life of the brake cylinder.
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