Removing Lower Timing-Case Cover

→ Never turn the crankshaft against the rolling direction or when the chain tensioner is removed.

→ Proceed carefully with your work.

→ Only turn the engine at the crankshaft.

→ After working on the camshaft, re-set the valve timing.

→ Observe general warning notes and working regulations.

Information 

• If a crankshaft stub is dirty or slightly rusted, this will damage the new sealing ring when it is fitted. 
• The crankshaft stub must be cleaned before the old sealing ring is removed so that no particles of dirt can get into the engine. 
• Use a metal-polishing pad (e.g. Never Dull) for this  .

1. Remove and replace crankshaft sealing ring. → Removing sealing ring for crankshaft flywheel
2. Remove lower timing-case cover.
   1. 2.1. Unscrew fastening screws on the timing-case cover. All screws are shown in grey in the illustration. . Don't forget the top two M8 screws for the cylinder head -1-  .
      Fig 1: Identifying Lower Timing-Case Cover Mounting Bolts

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   2. 2.2. Detach securely bonded timing-case cover by knocking carefully with a rubber hammer.
   3. 2.3. Clean sealing faces on engine block, crankshaft and timing-case cover thoroughly.