Join Date: Nov 2009
Location: Russian Federation
Strong bumps in the cardan shaft
Hello to everyone.
I've started breaking in period on my Q4 transmission.
The problem is a few strong bumps in the area of cardan shaft (it's rear part mostly) when starting. Only when releasing the clutch softly.
What I did already:
1) Clutch checked - everything's ok, flywheel and cover are balanced and good. The clutch itself is new
2) I've cheked the first shaft suppot (closer to the distribution box) - no play, rubber is mint etc...
What I can see is old rubber in the second support (located on the solid part of the shaft, that's inside a pipe). There's some play (up and down) in it. Could it be the reason?
The play on the shaft itself is few degress (when rotating with hand), the slots on the shaft's end are good... Usually when the play on diff is too big - it should be on big bump, and I have few and only when softly releasing the clutch.
I'm still fear that is can be the rear diff itself, but want to eliminate other suspects before ripping the diff...
And sorry for my english.