Installing Crankshaft Sealing Ring For Pulley/Vibration Balancer

Information 

Sealing rings become damaged as a result of improper fitting. Do not oil sealing rings on the running surface and do not pull sealing rings off the plastic sleeve.

Information 

• If the joint flange on the pulley or the surface on the crankshaft stub is slightly rusted, polish the rust off with a special polishing pad. 
• If there is bad corrosion or deep grooves, replace these components. 

Information 

The tightening specifications for the basic engine are stored centrally (→ 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES, ASSEMBLY OVERVIEWS ).

Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

1. Place seal with plastic sleeve over the crankshaft.
   Fig 1: Identifying Plastic Sleeve

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2. Tighten the two upper fastening screws and then the lower fastening screws by hand. Then tighten the screws in diagonally opposite sequence to the specified torque (aluminum screws  ).
   Fig 2: Removing Cover Using Sealing Ring

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   Fig 3: Identifying Chain Tensioner And Joint Flange

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   1. Joint flange (oil sealing lip with engine oil); align with sleeve or vibration balancer
   2. Aluminum screw  , M6 x 20; always use new aluminum screws;
   3. Aluminum screw  , M6 x 55; always use new aluminum screws;
   4. Sealing ring
   5. Chain tensioner
3. Pull plastic sleeve straight off the joint flange.
   Fig 4: Identifying Plastic Sleeve

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.