wiper blade problem

[Nissan Junky]

I have an s13 and my motor is good the problem is that the driver side blade were the nut goes is very loose ,like it moves slightly up and down so when i went to take the three bolts off they just spin ,any questions how to take it off or if any body have any opinion how to go about it.I will get pic to give you a better look at what i am talking about , i may not be explaining my self well so some pic will help.

[sam_bo3]

Are you saying the motor works but the arm is loose. There is a cover at the base of the arm pops off and there is a 14mm or so nut that hold it on. The arm spines on to the shaft of the motor. The arm may be stripped the arm will be around 20-30 bucks from a stealership. THat is what I paid for my s14. If the shaft is fubar than a new motor is needed.

[sam_bo3]

after rereading your post. I am not sure of the 3 bolts that you are talking about, Are you replacing all 3 arms of your car? but if the nut at the base of the arm is spinning (stipped) if it raises up stab a small screw driver under it to put it in a bind as you turn it, and see if you can make it grap a new tread and come off.