08-31-2022, 10:21 AM
Updating this issue (all about water pumps on 478):
I definitely have a Headhunter Mach 5: M5 - 115/60 Serial 0505-006552G so must have been replaced. Btw, their URL is www.headhunterinc.com
When I turn the HH pump on and run water it will run just fine but when I try to use the toilet it does not flush fully. For some dumb reason I didn’t ask the gurus here and bought a rebuild kit for the air/water valve… I didn’t end up needing that so now have a spare :-)
I was able to (finally) get the 12-volt water pump working (wiring issues) and now the toilet works fine!
It seems like the HH pump is losing suction or maybe sucking in air somewhere but I don’t see any leaks anywhere.
I also added a hose bib water pressure meter and it shows about 40psi on the HH (and shore connection) and about 30 on the 12-volt pump.
I have to figure out a way to test the HH pump and where it is leaking or maybe it just needs to be primed more… any suggestions welcome and I’m looking through all the other threads on this subject.
I can’t believe it’s been 8 months since I last updated this thread but the coach has been sitting very happily in its enclosed storage building and it has been WAY too hot to work on it in there… I need to plumb the generator/AH exhaust out the top of the building/door so I can cool it down in the coach lol
I definitely have a Headhunter Mach 5: M5 - 115/60 Serial 0505-006552G so must have been replaced. Btw, their URL is www.headhunterinc.com
When I turn the HH pump on and run water it will run just fine but when I try to use the toilet it does not flush fully. For some dumb reason I didn’t ask the gurus here and bought a rebuild kit for the air/water valve… I didn’t end up needing that so now have a spare :-)
I was able to (finally) get the 12-volt water pump working (wiring issues) and now the toilet works fine!
It seems like the HH pump is losing suction or maybe sucking in air somewhere but I don’t see any leaks anywhere.
I also added a hose bib water pressure meter and it shows about 40psi on the HH (and shore connection) and about 30 on the 12-volt pump.
I have to figure out a way to test the HH pump and where it is leaking or maybe it just needs to be primed more… any suggestions welcome and I’m looking through all the other threads on this subject.
I can’t believe it’s been 8 months since I last updated this thread but the coach has been sitting very happily in its enclosed storage building and it has been WAY too hot to work on it in there… I need to plumb the generator/AH exhaust out the top of the building/door so I can cool it down in the coach lol
Karen & Adrian Abshire
1998 2 slide 45' Newell Coach 498
Prior: 1985 Foretravel ORED 35, 1988 38' Foretravel U280, 2000 Foretravel 42' U320, 1990 Bluebird Wanderlodge WB40