I have a 99 Vanguard fifth wheel with what I assume is the original sure flo diaphram pump that I can't seem to get primed. I had trouble last year but farted around long enough and once primed it worked fine. This is the first time I have tried to use it this season.
I hooked the camper up to a water supply and flushed the lines with that pressure. I then Half filled the fresh water tank and tried the pump. It tries and spits but I can't get the system to prime. When I put the supply hose for the pump in a bucket of water it pumps just fine but when hooked to the holding tank supply line it just won't suck (my fresh water tank is below the pump, my bucket of water was above). When I disconnect the discharge hose from the pump and turn it on it won't suck out of the water tank either.
My guess is that the pump is just shot and it won't create enough suction to pull water from the fresh tank. I think if I could just get everything primed it would probably still work.
Any suggestions before I look for another pump? Anything I need to know about a replacement pump? It looks pretty simple, inlet, discharge, and a pressure switch wired in series with the supply power. I don't have a problem buying a new pump, just not sure I can get one in town quick and I was planning on going camping Sunday.
As always, thanks in advance.
I hooked the camper up to a water supply and flushed the lines with that pressure. I then Half filled the fresh water tank and tried the pump. It tries and spits but I can't get the system to prime. When I put the supply hose for the pump in a bucket of water it pumps just fine but when hooked to the holding tank supply line it just won't suck (my fresh water tank is below the pump, my bucket of water was above). When I disconnect the discharge hose from the pump and turn it on it won't suck out of the water tank either.
My guess is that the pump is just shot and it won't create enough suction to pull water from the fresh tank. I think if I could just get everything primed it would probably still work.
Any suggestions before I look for another pump? Anything I need to know about a replacement pump? It looks pretty simple, inlet, discharge, and a pressure switch wired in series with the supply power. I don't have a problem buying a new pump, just not sure I can get one in town quick and I was planning on going camping Sunday.
As always, thanks in advance.