The reason for the Tangjun four-wheel clutch not disengaging may be excessive wear. Symptoms of clutch not disengaging: When the clutch pedal is fully depressed, the power cannot be cut off, resulting in gear collision or inability to shift; after shifting, the tractor can still move slowly without engaging the clutch. Reasons for clutch not disengaging: Excessive free travel of the pedal; excessive free clearance; the three release levers are not on the same plane; the support nut end is loose, and the release lever is in a free state, all of which can reduce the backward movement distance of the pressure plate, causing incomplete separation of the driving and driven components. The separation claw and clutch bearing cover are severely worn; the clutch bearing is severely worn; the clutch has axial play; when the pedal is fully depressed, the release lever moves the pressure plate backward a small distance, causing incomplete clutch separation. The driven plate steel sheet is warped; the friction plate is bonded to the driving component; the driven plate hub is stuck or seized with the spline of the clutch shaft; the groove on the inner wall of the pulley and the contact area of the driving plate and pressure plate lugs are worn into pits, making axial movement of the driving plate difficult; after depressing the pedal, the driving and driven components remain in direct contact, causing incomplete clutch separation. The newly replaced friction plate is too thick, and even when the pedal is fully depressed, the driving and driven components of the clutch cannot be separated clearly.
