| 1 | Incomplete clutch separation | Pipeline sealing | Add refueling and exhaust |
| Master cylinder push rod free stroke is too large | Adjust master cylinder push rod stroke |
| Friction plate warping | Replace friction plate |
| Control switch is damaged | Replace control switch |
| 2 | Clutch slip | Friction plate with grease or excessive wear | Clean or replace friction plates |
| Compression spring is loose or damaged | Replace failed platen or spring |
| Severe or severe wear of friction plates | Replace damaged friction plates or clutches |
| Clutch hydraulic cylinder push rod free stroke is not enough | Adjust clutch hydraulic cylinder push rod stroke |