I had lots of trouble with ImageShack (admittedly mine probably) so I hope the image below is accessable to all. If not , let me know and I'll try again.

Also, an email from a member of another forum yielded an additional link. It shows the use of the "official" Volvo tool. Good if for nothing else than the excellent images of the brakes and details about their replacment.
http://www.volvospeed.com/Repair/40rearBrakes.php
Enjoy!!!







