Checking Clutch Plate For Wear

Information 

• The clutch lining does not wear linearly over the service life of the clutch. 
• Due to the settling behavior of the clutch lining, more wear occurs at the beginning. 
• Pad thickness wear will decrease as mileage increases. 

Information 

Pad thickness measurement must only be done on the flanged side of the rivet head.

1. Place a commercially available depth gauge on the clutch lining and measure the distance to the rivet head.
   Fig 1: Measuring Lining Thickness

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Clutch lining specifications -dimension -X--: 
   1. 2.1. New clutch lining at measurement position:

      → Minimum measurement: 1 mm 

   2. 2.2. Wear dimension: 

      → Control value: 0.3 mm 

   3. 2.3. If the measured value is less than the wear limit, the complete clutch unit must be replaced.
      1. 1  - Clutch linings
      2. X  - Required dimension and wear dimension
         Fig 2: Identifying Clutch Plate Wear Dimension

         Courtesy of PORSCHE CARS NORTH AMERICA, INC.