Nissan Repair: evaporator replacement, nissan sentra, connections tray


Question
1991 Nissan Sentra 1.6l engine.
What steps do I need to take (after removing the hoses from the firewall connections) to remove and replace the evaporator?  

Answer
hope you used a/c equipt to remove the refrig from the system.........or have it removed.........plus it under high pressure...........fan an housing has to be removed from under the dash///////glove box, covers, wiring connections, tray,  drain,/////// to get to it.......then the evap an housing comes out, split the case an replace evap.........better have a good tool box, all new line seals, refrid oil, vacuum pump//to draw a vacuum// then a gauge set to put new refrid in........best a job left to a good nissan tech........have to clean the system....new rec/dryer........