Removing Crankshaft Sealing Ring - Belt Side

→ Never use an abrasive or polishing cloth or brushes with metal bristles.

→ Follow cleaning instructions.

→ 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.

Information 

• Work on delicate engine parts must be carried out conscientiously and precisely. 
• Use a suitable tray. 
• Absolute cleanliness is essential. 

Crankshaft sealing ring -1-  on crankshaft flange with bore positions -arrows-  .

1. Prick-punch the crankshaft sealing ring with a mandrel -1-  (-arrow-  ).
   Fig 2: Prick-Punching Sealing Ring

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   NOTE: Drilling work on crankshaft sealing ring

   • Risk of engine damage caused by drilling chips
   • Risk of damage to the crankcase
   • Do not apply pressure while drilling

   → Carefully remove drill chips

   → Drill carefully

2. Drill holes in the crankshaft sealing ring -1-  at two directly opposite positions -arrows-  using a greased drill bit (ø 2 mm) and carefully remove drill chips.
   1. 2.1. A battery-powered screwdriver -2-  or a small power drill can be used for drilling holes.
      Fig 3: Drilling Holes In Sealing Ring

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Pull out sealing ring.
   1. 3.1. Screw two tapping screws (4 x 20, for example) with washers -1-  into the bore holes.
      Fig 4: Tapping Screws

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   2. 3.2. Pull sealing ring out alternately using slide hammer kit Nr.168 -2 and 3-  at the tapping screws -1-  .
      Fig 5: Pulling Out Sealing Ring

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Information 

      Visually inspect the crankshaft flange and crankcase bore for damage.

4. Check crankshaft flange and crankcase bore for damage.
   1. 4.1. Remove traces of corrosion on the flange with a metal-polishing pad (Nevr Dull  has been approved, available in car and motor bike accessory stores).
   2. 4.2. Then carefully wipe off the flange using a clean, lint-free cloth that has been soaked in solvent naphtha or acetone.
   3. 4.3. Leave to dry off for at least three minutes to ensure that the vapors of the cleaning agent do not attack the new sealing ring (sealing lip).