I have a 2010 KZ RV CL164 and repacked the bearings this spring (single 3500# axle). I have done bearings before (on a small pop-up) but never took the temp with and IR temperature gun.
Here is what I found. I don't have time to take it for a longer trip before my big vacation trip. Otherwise I would.
About a 40 mile round trip broke up into there and back segments with an hour in between. I dragged it along to an appointment. Trying to kill 2 birds with one stone.
After coming back the bearings were 85 degrees F. I sparingly used the brakes (manual transmission helps out with that) to get a more accurate reading as well. The latest Good Sam magazine said 165-185F was typical bearing temps. I would think that if they were too tight they would have gotten hotter than 85F in that time. Correct thinking?
I did check after the repack and there was a small amount of 'wiggle' in the rim (bearings)... grabbing the rim and rocking back and forth.
The rubber temperature of the tire (sidewalls and tread) was also 85F as a side note.
Any suggestions, comments or concerns?