[DrTodd]

Ian,

I found out the same thing!  All parts associated with that pump are wear items.  It appears the pump shaft is not lubricated by the engine oil.  My pump was stripped of its splines on its input shaft literally as I backed out of our shop after the radiator and CAC repair.  I backed straight up went to go forward and turn only to meet what felt like a locked steering box.  I quickly found no cooling fan turning and new it had to be the pump or pump drive.  It was off, as you mentioned, very easily and my local cat dealer had it on the shelf.  My actual drive gear and internal splines looked fine and meshed good with the new pump.  I may have suffered some other problem like a locked pump but after removal the pump still spun ok.  I replaced it out of caution for what may have been going on inside.  It's my plan to remove the pump and grease the splines every other oil change as preventative maintenance.  At least that will give me peace of mind as to it's condition.  I must say the first pump went over 100K miles before failure so keeping an eye on it should be good insurance.  Especially as easy as it is to remove.

Do you happen to have the part # for the Eaton pump?  There are a few of us with the C15 motor and starting to source parts... Thank you!