I never think to take pictures before hand for some reason, but aligning the rear slide on our coach has been on the to-do list for a little while now. It was about 3/16 of an inch low in the front and made a high pitched squeal when going in or out the for the first bit of movement. Been squealing more and more with each trip...
So, I was reading old threads on here about slide alignment and maintenance, and waxed the bottom of the slide with a good quality carnuba wax and oiled the gear tracks with a dry lube. That helped a little with the squeal, but of course did nothing for the sag. Then I used some dry spray lube on the nylon guides and that helped a little more with the squeal, but not completely.
Well this project jumped to the top of the to-do list after our last trip when the slide was off about 3/8" of an inch and rubbing paint off the trim on the side as you can see in the picture.
After building a wood brace on the outside, and with the slide about 3/4 the way out, I lifted the slide with a floor jack about an inch so I could take the weight off the front half.
The front nylon glide had made a pretty decent dent in the fiberglass on the underside of the slide, which I expected. What I didn't expect was that the board the glide was mounted to was starting to pull away from the side of the coach and was sagging slightly to the inside. The only thing I can figure is the additional resistance of the dent in the fiberglass was causing too much resistance and the glide was being pulled inward when the slide was retracted.
After removing the board the glide was attached to and replacing a few of the mounting screws with better screws and more of them, the glide was back into the proper position against the outboard wall of the coach.
Next I took a 12"x23" piece of stainless steel 1/8" plate and attached it to the underside of the slide along the path of the glide. This plate is attached along the outside edge by three stainless steel screws, but otherwise is held in place by the weight of the slide.
I'm going to watch everything pretty closely for the next few trips and look for movement or settling, but for now the slide is back where its supposed to be. If only I had gotten to the task faster, maybe I wouldn't have that wear mark on the outside trim. Oh well, live and learn one project at a time, and Yes I do deserve it.