Revised Flywheel Bolts And Torque Specifications On 
                            Audi 2.0L (3A), 2.2L (3B), 2.3L (7A, NG) Engines

Audi has revised the flywheel bolts on 1988-91 2.0L (3A), 2.2L (3B), 2.3L (7A, NG) engines used in the Audi 80, 90, 90 Coupe and 200.  

The revised bolt, Part # N 902 061 03, features a shoulder and uses the torque-to-yield method to achieve its final clamping load.  Seat the bolts using a torque of 22 lbs.ft., then turn each bolt an additional 1/4 turn, or 90o.  Because of their
special locking compound coating, the revised flywheel bolts may only be used once.

The former bolt, Part # N 902 061 01, which was torqued to 74 lbs.ft., did not have a shoulder and is no longer being serviced.

For additional information see AERA Technical Bulletin: TB-821

                                                                       The AERA Technical Committee

                                         Cylinder Head Installation On
                                            Audi 5000 Diesel Engines

After being sure the cylinder head and engine block mating surfaces are thoroughly clean, install the cylinder head gasket DRY.  NO SEALING COMPOUND SHOULD BE USED.

Install the cylinder head and torque the cylinder bolts in the sequence shown in three steps as follows:

     1st Torque to 50 N·m (35 ft. lbs.)
     2nd Torque to 70 N·m (50 ft. lbs.)
     3rd Torque to 90 N·m (65 ft. lbs.)

Start the engine and run it to operating temperature.  The cooling fan should cycle on.

Stop the engine and retorque the bolts to 90 N·m (65 ft. lbs.) without backing off.

After about 1000 miles of operation, retorque the head bolts again.  With the engine hot or cold, follow the same sequence as above and loosen each head bolt (one at a time) 30° and retorque it again to 90 N·m (65 ft. lbs.).

                                                                           The AERA Technical Committee