Nissan Repair: Ignition Switch repair 93 maxima, self tapping screw, switch repair

Question
I have a 93 maxima gxe. The ignition switch housing somehow has worked its way loose. I can move it about 1/4 inch clockwise and back. I am having trouble getting the key to turn to start the car.jiggling and wiggling the key and the steering wheel is not working anymore. I tried putting some graphite in the cylinder but that didn't help. I read that I could drill out the rivets and go back with a self tapping screw to tighten the housing back but I would like to take the cylinder out and clean and lubricate the internals while I am doing that. Do you know how to remove the cylinder from the ignition housing on a 93 maxima?

Answer
With the cost being so cheap I would go for a new cylinder when I took the housing down to tignten up the works.  TLhe cylinder comes out after you remove the cover and the bolt that keeps it in place.  But the collar that holds the assembly on the column is what makes the works loose.