Synchronizer Rings 3RD To 6TH Gear To The Locking Collar Allocation

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NOTE:

3rd and 4th gear synchronizer rings have depending on the version a molybdenum or carbon coating.

5th and 6th gear synchronizer rings are always molybdenum coated.

Pay attention to the allocation of the locking ring to the locking collar.

Fig 1: Synchronizer Rings Coated With Molybdenum Grease -I- Or Coated With Carbon -II-

Courtesy of AUDI OF AMERICA, LLC

I - Synchronizer rings coated with molybdenum grease

Identification: the synchronizer ring has oil pockets -arrows- and the friction surface -A- looks graphite gray and slightly porous.

II - Synchronizer rings coated with carbon

Identification: The friction surface -B- looks black and porous; the upper area is not coated.

Locking collar for synchronizer rings coated with molybdenum grease (See Fig 1). .

Fig 2: Synchronizer Ring Differences -I- And -II-

Courtesy of AUDI OF AMERICA, LLC

I - Locking collar without chamfer and with a groove -arrow-.

Locking collar -I- - >>old version<< - is no longer installed

II - Locking collar with chamfer -arrows 1- on both sides of the shift fork grooves.

Locking collar -II- - >>new version<< - is currently installed

locking collars for synchronizer rings coated with carbon (See Fig 1).

Fig 3: View Of Variation Of Locking Collar -A- & -B-

Courtesy of AUDI OF AMERICA, LLC

A - Locking collar without chamfer and with 2 grooves -arrow-.

Locking collar -A- - >>old version<< - is no longer installed

B - Locking collar with chamfer on the outside -arrows 2-.

Locking collar -B- - >>new version<< - is currently installed