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Home >> Porsche >> 2020 >> 718 Spyder >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 13 Engine - Crank Drive, Pistons 4.0L -- 718 SPYDER >> WM, 137455 Replacing Crankshaft Sealing Ring - Belt Side >> Replacing Crankshaft Sealing Ring >> Installing Crankshaft Sealing Ring

Installing Crankshaft Sealing Ring

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.

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.

NOTE: Incorrect tool 
  • Risk of damage to components 

    → Use prescribed tool.

  1. Check crankshaft flange and crankcase bore for damage.

    If necessary: Remove corrosion on the crankshaft flange using a metal-polishing pad.

  2. Clean components.
    1. 2.1  Carefully remove drill chips.
    2. 2.2  Carefully clean the crankshaft flange and crankcase bore using a clean, lint-free cloth soaked in solvent naphtha or acetone.
    3. 2.3  Allow components to dry off for at least three minutes.
  3. Position crankshaft sealing ring with support ring on the insertion part.

    Only press on the support ring and do not use lubricant.

  4. Fit crankshaft sealing ring -1-  .
    1. 4.1  Position crankshaft sealing ring -1-  with insertion part -3-  on the crankshaft flange.
    2. 4.2  Secure insertion part -3-  to the crankshaft flange by hand using two screws.
    G16219351Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Sealing ring with insertion part

  5. Install crankshaft sealing ring.
    1. 5.1  Fit screw of the > 9774 - assembly aid  on the insertion part and screw it in by hand.
    2. 5.2  Screw in screw of > 9774 - assembly aid  as far as required until the crankshaft sealing ring is pulled in fully.
    3. 5.3  Leave screw of the > 9774 - assembly aid  tightened for two minutes so that the sealing lip of the new crankshaft sealing ring can settle.
    4. 5.4  Remove tools.
  6. Use a calliper gauge to check that the crankshaft sealing ring is seated correctly and is straight.
    1. 6.1  To check this, take measurements at four different places, offset by 90°, from the crankshaft flange surface to the crankshaft sealing ring (level surface).

    > Dimension 2.7 mm +/- 0.3 mm 

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