[Latitude 28]

So why did it snap? That's the mystery. It looked to me as if the shaft had a rusty spot that started the crack, which ultimately spread and sheared off. The replacement pump's shaft was in good shape, no nicks, and Taylor put assembly grease on it. It went in smooth so maybe this one will be strong. I'm calling it over. I will get 2 new shafts. one to rebuild the original pump and the other as a spare for the current one.
Bottom line, shaft inspection is probably something to add to the annual PM list. Also I could have done it, just buy some more tools and customize a couple. But it was at least a day, maybe 2 days more for me because of the tools issue. We were already there for 5 days and we were getting the "stink eye" from the truck stop. 2 more days seemed stretching it. Now resting at Newell, fixing some small things and waiting for parts and some work for this week.

While researching another brand of coach, I came across an issue where the hydraulic pump, via a shaft, from a PTO off the transmission was shearing.  One fix was to install a PTO shaft with a zerk fitting to grease the shaft without disassembly.  While that is not possible on the Newell, the key is the type of grease they use at regular intervals.  That special hydraulic pump shaft grease could be applied to the Newell's hydraulic pump's shaft.  Here is the data sheet and part number on the grease itself.

PTO-TEC-085.pdf Size: 130.77 KB  Downloads: 17