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

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.

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.

If there are corroded areas on the crankshaft flange:
Clean the crankshaft flange.

Carefully remove corrosion on the crankshaft flange using a suitable metal-polishing pad.

Clean the crankshaft flange with acetone or solvent naphtha.
Remove crankshaft sealing ring -1- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Crankshaft sealing ring on flywheel side

Drill holes in the crankshaft sealing ring -1- at two directly opposite positions using a greased drill bit with ø 2 mm.

Screw two tapping screws (Ø approx. 3 mm, length approx. 30 mm) into the bores.

Pull off crankshaft sealing ring -1- alternately at both tapping screws using > VAS 6965 - puller set .
Check crankshaft flange and crankcase bore for damage.
Clean crankshaft flange and crankcase bore.
Remove drill chips.

If necessary:

Carefully remove small edges or burrs on the chamfer of the crankshaft flange using an oilstone.

If there are corroded areas on the crankshaft flange:

Carefully clean the crankshaft flange again using a suitable metal-polishing pad.

Clean the crankshaft flange and crankcase bore with acetone or solvent naphtha and leave the components to dry off for at least 3 minutes.