There are generally two types of clutch pressure plate assemblies: coil springs and diaphragm springs, the difference between them is the way the pressure plate is pressed towards and away from the clutch-driven plate.

    As an important part of the clutch, the clutch pressure plate assembly seriously affects the service life of the clutch, so it needs to be checked on a daily basis.

    Overhaul of the clutch pressure plate assembly includes:

    (1) Inspection of the end face of the pressure plate

    Fix the pressure plate on the mandrel, check its end face runout with a dial indicator, and the limit of use is 0.2mm. If the riveting point of the pressure plate is damaged or riveted, the pressure plate should be replaced.

    (2) Check the height of the diaphragm spring

    If the height of the diaphragm spring changes, it means that the spring force of the diaphragm spring is insufficient and must be replaced. The height of the diaphragm spring can be checked with a caliper, and the difference from the standard height should not be greater than 0.5mm.

    (3) Inspection of the wear of the small end of the diaphragm spring

    Use a caliper to check the contact and wear marks of the small end of the diaphragm spring on the clutch pressure plate and the release bearing, and the depth should not be greater than 0.6mm.