LEMON Manuals: Even more car manuals for everyone
Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine) >> Removing And Installing Crankshaft Sealing Ring - Flywheel Side >> Removing Crankshaft Sealing Ring

Removing Crankshaft Sealing Ring

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • In order to avoid deforming the thrust plate housing, always loosen screws in several stages and in diametrically opposite sequence.
  1. Remove the clutch pressure plate including clutch drive plate. Unscrew 6 M8 x 16 pan-head screws crossways in several stages. Remove the thrust plate, including the drive plate. Refer to REMOVING AND INSTALLING THE CLUTCH PEDAL .
    NOTE:
    • Make sure not to damage the crankshaft flange when installing and removing the double-mass flywheel (DMF) or Tiptronic drive plate!
  2. Remove the double-mass flywheel (manual transmission) or the drive plate for the torque converter (Tiptronic). Unscrew 8 M10 x 1 x 50 pan-head screws for the DMF or M10 x 1 x 25 in the case of the drive plate, remove DMF or drive plate. To counter, fasten toothed segment 9538/1 to the crankcase using an M12 x 50 hexagon-head bolt (fine thread). See Fig 1.
    Fig 1: Fastening Toothed Segment 9538/1 To The Crankcase
    G03092255Courtesy of PORSCHE OF NORTH AMERICA, INC.
    NOTE:
    • Never use an abrasive or polishing cloth or brushes with metal bristles on the sealing surface of the crankshaft flange!
  3. Carefully remove small edges or burrs on the chamfer of the crankshaft flange with an oilstone. Then, carefully degrease the crankshaft journal and crankcase bore (e.g. using a clean, lint-free cloth that has been soaked in solvent naphtha or acetone). Blow dry using a low air pressure (0.5 bar) or ventilate.
    NOTE:
    • The serial spindle sealing ring is pressed 11 mm in, measured from the end of the flange. The new sealing ring is pressed 13 mm in using the special tool insertion tool 9699 in order to generate a new running track.
    • If the crankshaft flange is corroded, clean it as follows:
    • Press the old crankshaft sealing ring in further with the special tool insertion tool 9699 in the same way as you would install a new sealing ring.
    • Clean the crankshaft flange with a special metal-polishing pad (e.g. Never Dull  , available in car and motor bike accessory stores). Then, carefully degrease the flange (e.g. using a clean, lint-free cloth that has been soaked in solvent naphtha or acetone).
    • Replace the crankshaft sealing ring as described below.
  4. Spot drill the crankshaft sealing ring on the front -arrow-  with a 3 mm drill bit, grease the drill bit beforehand. See Fig 2.
    Fig 2: Spot Drilling The Crankshaft Rear Sealing Ring On The Front
    G03092256Courtesy of PORSCHE OF NORTH AMERICA, INC.
  5. Screw sheetmetal screw (5 x 20) with washer approx. 5 mm into the bore.
  6. Pull out the sealing ring with the puller 9237 -arrow-  . If necessary, clean crankshaft flange again.
Fig 3: Pulling Out Crankshaft Rear Sealing Ring With Puller 9237
G03092257Courtesy of PORSCHE OF NORTH AMERICA, INC.
scientia non olet · About LEMON Manuals