Installation Position Of Locking Collar/Synchronizer Hub For 3RD And 4TH Gear
WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Installation Position 3Rd And 4Th Gear Locking Collar/Synchro-Hub
Courtesy of AUDI OF AMERICA, LLC
Wider collar of synchronizer hub -arrow- points to 3rd gear.