You have a 94 EX. It has cheap brakes. Go to a u-pull-it junkyard and get another caliper. Buy 2-new rotors if they're warped or beyond the service limit from some cheap auto-parts store somewhere, and replace the parts. Problem solved inexpensively. :thumbup

Of course, you could rebuild it like westcoast said, but it may be cheaper and easier to use a junk part than it would to rebuild yours or buy the tools to do it. Either way works fine.