hi bill,loosen wheel nut's jack car up & remove wheel,look behind the drum you will see some trubber bung's,remove the bung near to the top of the drum once removed insert a flat ended screw driver & you can feel the self adjuster move the screw driver left & right this will release the self adjuster & free the drum,if you still have difficulty give the drum a wack with lump hammer all round.best of luck
steray
April 2008