Quote Originally Posted by Michael2 View Post
Hi pat, I did have an occasional sqeal before the change, but not any longer. The belt now runs true on all the pulleys and the tensioner.
It still has the washer at the 9 0'clock position acting as a shim, and given how common the misalignment issues on the tensioner are, and the less than perfectly flat face on the back of the tensioner, my suspicion is that the stud that it mounts to gets a very slight bend.

I'll probably be pressing some new fan bearings into 300Tdi timing covers this week, so if I remove it all again to fit a new timing cover, then I'll try adjusting the tensioner stud instead of using the shim.

The more I think about it, the less suspicious I am of anything other than the tensioner bolt / stud being the problem.
Let us know what you find mate,it's good to learn. Pat