Installing Flywheel

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2019 Porsche 911, 2018 Porsche 911, 2017 Porsche 911, 2016 Porsche 911, and 2015 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

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.