I am a lucky man. My '99 S70's tiing belt tensioner exploded and we caught it before doing any damage to the engine. Now, I am setting out to change the tensioner, idler, belt, and water pump.

I have downloaed the pics from volvospeed bay 13, but they are for an 850 with a different type of tensioner and a different cam shaft sprocket cover (see pic below). Here are my questions:

How do I tension/detension the TB tensioner?

The newer cam shaft sprocket cover has two notches located above each sprocket. Are these alignment marks?

 

This is exactly what you need:

http://www.matthewsvolvosite.com/for...le.php?id=2541
http://www.matthewsvolvosite.com/for...hp?f=1&t=24277