92 caravan wanting to remove rear wiper motor

hi i like to know how u get the rear wiper motor out i have got all the plating off so i can see the wiper motor and i can push it up and down but how do u get it off the part on the outside where the arm is usally attached but on mine its broken right off how do i get that off to replace the entire thing

so anyone have any ideas? as the Hayes manual has no ideas

still looking for help best idea i have is smashed the window out to take the window wiper out but no ideas how to get it back in

so any suggestions be nice

There is a small clip on the inside of the actual wiper arm that has to be lifted up, and then the wiper arm assembly that is attached to the wiper motor shaft pulls outward, and off. You may get lucky if the arm has been taken off recently, it will slide off. I changed mine and had an awful time because of the dirt and corrosion holding the two on the inside. I drilled a small hole thru the top of the wiper bracket down to the shaft and sprayed PB Blaster penetrating oil inside the hole, hoping to free up the arm. It still was stuck, I ended up taking a small dremel tool cutting wheel, and carefully slicing the aluminum wiper arm bracket down to the shaft and sprayed again, finally was able to work it off the wiper motor shaft.Tape some cardboard on the window before dremeling to protect the paint and window from grinding chips.They really are one of the worst wiper repairs I have taken off. No easy way to do it.
After cleaning, put some anti-sieze compound, on the shaft before installing the new arm to prevent future corrosion. Watch out trying to pry on the door panel metal, it does dent easily.