Pressure Plate: Testing and Inspection

Check the pressure plate for cracks and scratches. Use a straight-edge and feeler gauges as shown in the figure to check that the pressure plate is flat. A clearance of up to 0.03 mm (0.001 in) is permissible at the inside diameter of the friction surface, but no clearance is permissible between the straight-edge and the friction surface. Check at several points. Check that the diaphragm spring is not cracked or otherwise damaged. Check that the release bearing runs freely when it is turned while a light axial load is applied.