Check the archives for this topic.  This came up a while back and several
people recommended their favorite specialty tool for the job.  My experience
jives with John's...

" There is room underneath to get it off, but it is a pain in the
Boot-tocks."

My only recommendation is to use liberal amounts of your favorite anti-seize
compound upon reassembly.  Mine was tough to get off the first time, but
comes off easily now!

Jake
82 AC Westy