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Check the air gap of the magnet coupling

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  1. Check the air gap between the pressure plate and belt pulley with a depth gauge.
    Fig 1: Checking Air Gap Between Pressure Plate And Belt Pulley With A Depth Gauge
    G03150951Courtesy of PORSCHE OF NORTH AMERICA, INC.
  2. Place a rule on the outer edge of the belt pulley. Use a depth gauge to measure up to the pressure plate. Apply battery voltage to the magnetic coupling and measure the distance (air gap) to the attracted pressure plate. Always measure at atleast three points on the pressure plate in order to obtain a mean value. Distance: 0.5 mm +/- 0.15 mm
  3. If the air gap is not in the tolerance range, it must be adjusted with the aid of the spacer washers.
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