[Richard]

Tag axle.

The hardest part was figuring out what the heck this brake setup was. Meritor 1560. Be aware that later than 99 used the Knorr Bremse in the tag. 

The manual.    http://graphicvillage.org/meritor/mm4.pdf

Again easier than a car. You only have to remove the top slide pin and rotate the caliper down on the lower slide pin to remove and replace the pads. Notice the different thickness from side to side on the pads. 

I had a little complication, in that one of my tags felt growly when rotating by hand. This is why.
   
   

Here are the bearing and race numbers

All Timken part numbers HM212049, HM 212011, HM 218210, HM218248

The seal is Scotseal SKF 46300.

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And to close this out with what I would do differently.

One I thought I was being careful with my hands but obviously not enough. Everything about this job is heavy and has the potential to pinch you.

I would pressure wash everything around where I was working to remove some of the road grime.

I would have gone to the Prevost parts guy first. I was just surprised that so much of the wheel ends on my Newell were the same wheel ends as on a Prevost.

Don’t even think about doing this at home without some method of lifting the parts you remove.