Removing Crankshaft Sealing Ring

WARNING: This page is about a different variant/trim than selected.

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

WARNING: Caustic fluids

Danger of chemical burns
→ Wear personal protective gear.

→ Ensure that there is good ventilation.

→ Avoid contact with caustic fluid.

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

Information

Use drill bit with diameter of 2 - 2.5 mm.

Carefully spot-drill crankshaft sealing ring.
Spot-drill crankshaft sealing ring -1- at two opposite positions -Arrows- using a greased drill bit.

Carefully remove drill chips.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Example: spot-drilling crankshaft sealing ring
Pull out crankshaft sealing ring -1- .
Screw extractor tip from > VAS 6965 - Puller set into bores -Arrows- alternately and pull the sealing ring out evenly.

Alternatively, screw two tapping screws into bores -Arrows- and pull out crankshart sealing ring alternately using > VAS 6965 - Puller set on the tapping screws.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Example: drilling positions on sealing ring
CAUTION:
The crankshaft flange can be damaged if not cleaned correctly.
- Leaks
  → Never use an abrasive or polishing cloth or brushes with metal bristles.
  
  → Follow cleaning instructions.
Carefully clean the crankshaft flange -1- and crankcase bore using a lint-free cloth soaked in solvent naphtha.
Check centering pin -2- for damage and replace if necessary.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Crankshaft flange with centering pin
Check crankshaft flange and crankcase bore for damage.
Remove traces of corrosion on crankshaft flange using a metal-polishing pad.

Clean the crankshaft flange with a lint-free cloth soaked in solvent naphtha.

Leave to dry off for three minutes .