Installing Vibration Damper

Information 

• Do not start the engine while the vibration damper and drive belt are removed. 

Information 

• Replace screws for vibration damper. 
• The screw thread and crankshaft flange thread must not be greased. 
• Clean the thread on the crankshaft flange to remove grease  .

1. Fit the vibration damper -1-  on the crankshaft flange. Check the position of the dowel pin.
   1. 1.1. Use a short locating pin 9595/1  to disconnect the vibration damper.
2. Fit six new external Torx screws (E12, M8 x 1 x 25, fine thread) -2-  uniformly in diagonally opposite sequence.
   Fig 1: Identifying Vibration Damper Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Fit drive belt.

   → 137819 REMOVING AND INSTALLING DRIVE BELT .

4. Tighten six external Torx screws according to tightening specifications.
   1. 4.1. Pre-tighten screws uniformly in diagonally opposite sequence.

      → Initial tightening: 10 Nm (7.5 ftlb.) 

   2. 4.2. Final tightening using special tool electronic torque wrench, 2-100 Nm/1.5-74 ftlb.) 9768  .

      → Torque angle: 90°+/-5° 

5. Remove locating pin.