Installing Crankshaft Sealing Ring

→ Use prescribed tool.

Component overview of insertion tool 

1. Screw for pulling in sealing ring
2. Sleeve of insertion tool 9699
3. Guide pin for guiding assembly aid 9699/3
4. Fastening screws for securing insertion tool
5. Assembly aid 9699/3 
   Fig 1: Identifying Insertion Tool 9699

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Fit the assembly aid 9699/3  into the insertion tool 9699  .
   1. 1.1. To do this, unscrew the hexagon-head bolt and replace the inserts.
2. Small burred spots or damaged areas on the tools can be removed with a nail file.
   1. 2.1. Then pull off the tool using an oil stone or polishing cloth.
   2. 2.2. Remove residual dirt on the tools using solvent naphtha or acetone.
3. Adjust insertion tool for fitting the supporting sleeve of the sealing ring.
   1. 3.1. Unscrew the screw until the groove -arrow-  of the assembly aid -1-  is flush with the contact surface of the sleeve.
      Fig 2: Locating Insertion Tool

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
      CAUTION: Damage to the sealing lip.

      • Leaks

      → The crankshaft flange and tools must be perfectly clean and free of grease.

      → The sealing ring must be fitted dry, i.e. no oil, grease or other lubricants can be used.

      → The crankcase bore must not be oiled.

      → The sealing ring can only be positioned on the assembly tool using the supporting sleeve.

      → The new crankshaft sealing ring (PTFE) is supplied on a supporting sleeve as a spare part.

      → Do not remove the sealing ring from the supporting sleeve.

4. Slide new crankshaft sealing ring -1-  with supporting sleeve -2-  onto the assembly aid 9699/3  .
   1. 4.1. The collar of the sleeve must be facing away from the tool -inset-  .
   2. 4.2. Make sure the sealing ring is dry.
      Fig 3: Identifying Crankshaft Sealing Ring And Supporting Sleeve

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Insertion tool 9699  is then fitted.

   Check the position of the dowel pin! 

   1. 5.1. Secure the insertion tool to the crankshaft flange using cheese head bolts -arrows-  .
      Fig 4: Installing Insertion Tool On Crankshaft Flange

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Information 

      • Insertion tool 9699 must be left in place for two to three minutes after fitting the sealing ring so that the sealing lip can settle into position on the crankshaft flange. 
6. Turn the hexagon-head bolt clockwise as far as it will go.
   1. 6.1. Leave the tool in place for two minutes.
      Fig 5: Turning Hexagon-Head Bolt Of Insertion Tool 9699

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Remove insertion tool.
   1. 7.1. Turn hexagon-head bolt anti-clockwise until the guide screws are still just visible.
   2. 7.2. Loosen the two cheese head bolts and remove the tool.
8. Check that the sealing ring is seated correctly.
   1. 8.1. To check this, take measurements at four different places, offset by 90°, from the crankshaft flange surface to the sealing ring (level surface).

      → Measured value: 7 mm+/-0.3 mm 

9. Leave supporting sleeve -1-  on the tool after fitting to protect the edges of the tool.
   1. 9.1. Using a small screwdriver, carefully lever off the supporting sleeve at the ventilation bore -arrow-  and remove it.
      Fig 6: Locating Insertion Tool Supporting Sleeve

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.