the easiest way is to use a belt tensioner tool,most parts suppliers sell them.It will come with various sized bits,once you find the right size just rotate the tensioner to relieve belt tension and remove the belt.vice versa for install.
RepairPal Certified shops can diagnose and repair your 1993 Ford Explorer. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.