I need to swap out my Alternator on an A4 B7 2.0 TDI, but I'm having trouble with the serpentine belt tensioner, which means I can't get it off the alternator.
I've tried to put a 17mm spanner on the bolt circled here, but when I rotate clockwise, the bolt just slips, and there's no reduction in the belt tension.
I guess I'm missing something? The videos on YooToob all show the petrol engine which has a slightly different tensioner requiring variously a 17mm, 18mm and 19mm wrench. Ideas would be really welcome. This should have been a fairly straightforward job.
I've tried to put a 17mm spanner on the bolt circled here, but when I rotate clockwise, the bolt just slips, and there's no reduction in the belt tension.
I guess I'm missing something? The videos on YooToob all show the petrol engine which has a slightly different tensioner requiring variously a 17mm, 18mm and 19mm wrench. Ideas would be really welcome. This should have been a fairly straightforward job.