Installing Flywheel

Check that the through-bores on the hub of the flywheel are flush with the screw heads.
WARNING:
Caustic fluids
- Danger of chemical burns
→ 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.
Remove protective wax on new parts with acetone or solvent naphtha.
Fit two centering pins 9321 -1- with M10 thread on the crankshaft flange by screwing them in by one to two turns only (caution: fine thread!).
Recommendation: Screw in one centering pin next to the dowel pin.

Fig 1: Identifying Crankshaft Flange Centering Pins
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

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).

Information
- Check the diaphragm spring on the flywheel for mechanical damage before installing it.
- A damaged flywheel must not be installed!
Fit flywheel -1- over the centering pins -2- at the dowel pin on the crankshaft and push it onto the crankshaft flange.
1. 4.1. Fit ten new screws and tighten uniformly in diagonally opposite sequence.
  
  Fig 2: Identifying Crankshaft Flange Flywheel
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Tighten screws uniformly and in diagonally opposite sequence to the prescribed tightening torque.
Tool recommendation: Torque/torque angle screw tool WE 1440 .

Initial tightening 25 Nm (19 ftlb.)

Torque angle 120°
1. Initial tightening to the specified toque
2. Final tightening torque angle
  
  Fig 3: Display - Adjusting Special Tool Screen
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.