[hypoxia]

Coach 1482 The bumping sound when the pocket doors opened and closed was annoying.  I read up on the solutions others posted but no joy.  My solution was to cut a 1" long piece of 1/2" ID vinyl hose which is 3/4" OD and stick it in the doorway near the top with double sided tape.  No more bump.

I did gain access to the rear bath air valve so here is a list of photos and files showing the part numbers.

[CaptainGizmo]

Yeah, been there. The conclusion has been that there’s no final closure dampening adjustment that one would expect as on most self-closing door mechanisms.

I’ve been using 3 two-stage cushion dots which works good enough.

[hbens]

That looks like the valve for dump valve.

[hypoxia]

Newell is totally vindicated!  I just watched an Andrew Steele video about a fairly new Prevost and the pocket doors thumped when they closed!  

[encantotom]

That looks like the valve for dump valve.

yes,   it is the same as the dump valves and the one for the bay freezer air slide on mine.  

there are a number of threads on replacing and buying them on the forum

i had to replace mine on the door to the bedroom.  fortunately it was accessible in the closet next to the door.

tom