gurbinder, 1988 240 Volvo clutch replacement, a couple links to check out, from Volvo forums with instruction on clutch replacement. It may be worth your time to visit local library and get the correct repair manual for your car to have on hand before starting the job.
http://www.peachparts.com/shopforum/diesel-discussion/174544-how-replace-clutch-240d-pictorial.html
http://volvoforums.com/forum/volvo-240-740-940-12/diy-clutch-repair-89-245-mt-64763/