Check this site before doing any timing belt change on a Mondeo.
http://yawroc.blogspot.com/2008/01/ford-mondeo-18td-1996.html
If the link don't work then cut and paste into your address barm
http://yawroc.blogspot.com/2008/01/ford-mondeo-18td-1996.html
If the link don't work then cut and paste into your address barm