Installing Crankshaft Sealing Ring

→ Use prescribed tool.

Component Overview Of Insertion Tool 

1. Hexagon-Head Bolt For Fitting The Crankshaft Sealing Ring
2. Sleeve Of Insertion Tool 9699
3. Guide Pin For Guiding Assembly Aid 9699/3
4. Cheese Head Bolts For Securing The Insertion Tool
5. Assembly Aid 9699/3 

Fig 1: Identifying Insertion Tool Components

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1. Fit the Assembly Aid 9699/3  into the Insertion Tool 9699  .
   1. 1.1. To do this, unscrew and remove the hexagon-head bolt and replace the inserts.
2. Small burred spots or damaged areas on the tools can be removed with a needle-point 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 -1-  for fitting the supporting sleeve of the crankshaft sealing ring.
   Fig 2: Locating Insertion Tool For Positioning Sealing Ring

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   1. 3.1. Unscrew the hexagon-head bolt until the groove of the assembly aid is flush with the contact surface of the sleeve -arrow-  .
   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  .
   Fig 3: Identifying Crankshaft Sealing Ring With Supporting Sleeve

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   1. 4.1. The collar of the sleeve must be facing away from the tool -inset-  .
   2. 4.2. Only fit the crankshaft sealing ring dry -1-  .
5. Insertion Tool 9699  can then be fitted.
   Fig 4: Fitting Insertion Tool On Crankshaft Flange

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   1. 5.1. Secure the insertion tool to the crankshaft flange using cheese head bolts -arrows-  .

      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. Screw hexagon-head bolt in clockwise as far as it will go.
   Fig 5: Installing Crankshaft Sealing Ring

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Remove insertion tool.
   1. 7.1. Unscrew hexagon-head bolt anti-clockwise until the cheese head bolts 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 crankshaft sealing ring.

      → Measured Value: 7 mm+/-0.3 mm 

9. Leave supporting sleeve -1-  on the tool after fitting to protect the edges of the tool.
   Fig 6: Locating Insertion Tool Supporting Sleeve

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   1. 9.1. To replace the supporting sleeve -1-  , carefully lever it off at the ventilation bore -arrow-  using a suitable tool.