Installing Dual-Mass Flywheel

→ Avoid contact with caustic fluid.

→ Wear personal protective gear.

→ Ensure that there is good ventilation.

→ If you do come into contact, wash off immediately with plenty of warm water and contact a doctor if necessary.

1. Remove protective wax on new parts with acetone or solvent naphtha.
   NOTE: Removing and installing flywheel

   • Leaks
   • Risk of damage to the flywheel and adjacent components

   → Be very careful during removal and installation.

   → Get another person to help because of the weight.

   Information 

   Before re-installing the flywheel, clean the friction surface of the flywheel using a clean, lint-free cloth soaked in acetone or solvent naphtha).

2. Position the dual-mass flywheel on the crankshaft dowel pin and press it onto the crankshaft flange.
   1. 2.1. Fit ten new internal serration screws (M10 x 29) and tighten them evenly and crosswise.
3. Position special tool toothed segment 9538/1  for countering at the starter ring gear.
   1. 3.1. Place toothed segment -1-  on the cast strut. Turn the flywheel slightly to the right to do this.
      Fig 1: Identifying Toothed Segment Position For Tightening Screws

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Tighten ten internal serration screws evenly and crosswise according to tightening specifications.

   → Initial tightening: 25 Nm (19 ftlb.) 

   → Final tightening - torque angle: 120° 

5. Remove toothed segment 9538/1  .