【The owner's family car knowledge】The brake pedal stroke of the automobile is too long, the braking effect is slow, the braking efficiency is very low or even lost, and the braking distance increases.
cause of issue:
1. The brake oil pressure is insufficient. (The brake master cylinder lacks oil, the brake pipe is broken, the oil pipe joint is leaking, and the oil circuit is blocked).
2. There is air in the brake system.
3. The free stroke of the brake pedal or the brake gap is too large, the brake shoe friction lining is in poor contact, the wear is serious or there is oil pollution.
4. The brake master cylinder, wheel cylinder piston and cylinder tube are worn or strained, and the leather cup is aging and damaged.
Troubleshooting:
1. Continuously depress the brake pedal. If the pedal gradually rises and has an elastic feel, but it is still very low when stepping on the pedal after a short pause, that is, there is air in the brake system. At this time, the brake system should be exhausted. gas.
2. One-step braking is not effective, but the braking effect is very good when the pedal is stepped on several times. Generally, the free stroke of the brake pedal is too large or the brake gap is too large. The free stroke of the pedal should be adjusted, and then the brake clearance should be checked, and the brake should be disassembled and repaired if necessary.
3. When the brake pedal is stepped on, it is not weak or sinking, but the braking effect is poor. This phenomenon is a failure of the wheel brake, such as oil or poor contact of the brake shoes, aging, wear of the friction plate, and wear of the brake drum. Uneven. The braking technology should be checked and adjusted and repaired if necessary.
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