I have that coach & System & never had any issues with it..I have had some minimal leaks at the manifold over time since I had to change out the pump/reservoir because of an exhaust leak about a foot away from it that melted the plastic reservoir & they didn't make them anymore so I had to but the pump/reservoir assembly..tighten them up & no leaks..so I say try that first. So all that said hey I've got a nice healthy working pump (boxed up) for sale on the Classified section here if anyone's in need..$300.00 OBO.
2004 American Eagle "J"/400 ISL/Spartan MM
Luxe Ryder Trailer
2007 Honda ST1300 & 2004 Honda Rune