Vibration Damper (Viscous) - Cleaning and Inspection for Reuse (1-10) Section 1 - Cylinder Block - Group 01 M11 Page 1-38 Remove the paint on both sides of the damper in four locations spaced 90 degrees apart. Measure and record the thickness at two points on each of the four locations as follows: Measure the thickness at 3.18 mm [0.125 inch] from the outer lip. Measure the thickness at 25.4 mm [1.0 inch] from the outer lip. NOTE: This step will result in a total of eight measurements. If the variations between any of the eight measurements exceeds 0.25 mm [0.010 inch], or if the thickness at any point exceeds the maximum thickness dimensions of 45 mm [1.772 inch], replace the damper.
Spray the rolled lip of the damper with crack detection developer, Part No. 3375434 or equivalent. Heat the damper in an oven (rolled lip side down) at 93°C [200°F] for two hours. Caution: Wear protective gloves when handling parts that have been heated to prevent personal injury. Remove the damper from the oven and check for fluid leakage around the rolled lip. If there is leakage, replace the damper.