Chain TENSIONER, TENSIONING
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.
-- Tension the piston by hand -arrow-.
-- Push the chain rail in direction of -arrow- and secure it with an Allen wrench -1-, wrench diameter 3 mm.