Details of diaphragm clutch replacement can be found in the following copies of Floating Power:
– Vol 37 Issue 2
– Vol 30 Issue 2
– Vol 27 Issue 2
You can download the Tech Torque search program and files from here: http://traction-owners.co.uk/members_only/technical_articles.shtml
Alternately, you can open and view the individual editions here: http://traction-owners.co.uk/members_only/magazine_back_issues.shtml