Simple troubleshooting and analysis

Poor braking effect or no braking

1. The brake fluid has deteriorated or mixed into other fluids;

2. The brake master cylinder apron is severely worn;

3. The compensation hole of the brake master cylinder is blocked or the vent hole of the oil storage chamber cover is blocked;

4. There is air in the brake pipeline;

5. Improper adjustment of the gap between the brake pads and the brake drum;

6. Improper adjustment of control push rod stroke or brake cylinder stroke;

7. Oil leakage in the brake line;

8. Failure of the brake master cylinder;

9. Vacuum booster leaks

1. Replace the brake fluid;

2. Re-replace the brake master cylinder;

3. Unblock the oil inlet holes or vent holes of the master pump;

4. Drain the air in the pipeline;

5. Readjust;

6. Readjust;

7. Overhaul the brake pipeline;

8. Replace the brake master cylinder;

9. Replace the vacuum booster

Brake lock

1. The gap between the booster push rod and the piston hole of the brake master cylinder is improper;

2. The oil inlet hole of the brake master cylinder is seriously blocked

1. Adjust the gap to not more than 0.5 mm;

2. Replace the brake master cylinder

Abnormal noise when braking

1. The performance of the vacuum check valve is poor;

2. The clearance between the push rod and the bottom of the piston hole of the brake master cylinder is too large;

3. Improper fit of internal parts of vacuum booster

1. Replace the one-way valve;

2. Re-adjust the gap to not more than 0.5 mm;

3. Replace the vacuum booster

Unable to purge the air in the pipeline

1. There is no gap between the booster push rod and the bottom of the piston hole of the brake master cylinder

1. Re-adjust the gap to not more than 0.5mm