1995 Liberty:
Here is a picture of a grease fitting on the brake assembly on the tag axle.
The initial problem was the left tag axle brake would not release. This is a picture of the right side since it was easier to get at for the photo. While fooling around with that issue and doing the lubrication of every thing on the back end we started looking at things closely. There was a screw out plug that was obviously the place where a zerk fitting should be. Neither the left or right side had it while both steers did. This lubrication point has not been touched for 13 years or so. The hell of it is that it has had Prevost service, dealership service and who knows what all. Most of the existing documentation showing "professional" care.
Anyway, we installed the zerk fitting and gave it a shot of grease. Subsequent discussion with one of the board Gurus indicate that this fitting should only be given a very light shot of grease.
So, this leads me to one of my own favorite themes. There are many of us who do all our work on the coaches, many who do some of the work (me), and some who do none of the work. In any case, it still pays to be as knowledgable as one can be about the issue. Anyway, my premise is that "enlightened amateurs" generally do better work than professionals. A professional has as his primary concern the bottom line. Nothing wrong with that. The enlightened amateurs main concern is doing work of the best quality.
With that, my thanks to Jon for his help.
Yes, I will get under there this afternoon and polish the slack adjuster.