Audi TT 2007 - Page 204

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Checking Synchronizer Rings for 1st, 2nd and 3rd Gears for Wear
– Press synchronizer ring, outer race and inner race onto taper
of gear wheel and measure gap dimension -a- using a feeler
gauge.
Gap Dimension
-a -
Installed Dimension Wear Limit
1st, 2nd and 3rd
gear
1.2 to 1.8 mm 05 mm
Installed Position of Outer Race, Inner Race and Synchronizer
Ring, 2nd Gear
– Place inner race -A- on the 2 gear wheel.
• The bent tabs -arrow 1- face toward outer race -B-.
– Install outer race -B-.
• The tabs -arrows 2- engage in the gear wheel grooves
-arrows 3-.
– Install synchronizer ring -C-.
• The grooves -arrows 4- engage in the tabs -arrows 1- of the
inner race -A-.
Disassembling and Assembling Locking Collar and Synchronizer
Hub for 1st and 2nd Gears as well as 3rd and 4th Gears
– Remove the springs to disassemble -1-.
1 - Spring
2 - Locking piece
3 - Locking collar
4 - Synchronizer hub
– To assemble, slide locking collar over the synchronizer hub.
• In 3rd and 4th gear, the wide collar on the synchronizer hub
and the locking collar face in one direction.
• Installed position: the narrow recesses in the synchronizer hub
align with the recesses in the locking collar.
Audi TT 2007 ➤
Manual Transmission - Edition 10.2009
198 Rep. Gr.35 - Gears, Shafts