fresh water pump

[Don Baker]

On my Hunter 33 , my fresh water pump works fine It delivers plenty of water when the galley and head velves are opened. It shuts off when the valves are closed , but after valves are closed for a few minutes the pump will short cycle, that is, it will turn on then immediatly turn off. This will continue until I turn off the switch. This is a pain has anybody got a remedy?

 

[Peggie Hall/Head Mistress]

Diaphragm in the pump is failing

And as it fails, it lets the pressure drop, which turns the pump on to restore the pressure. As it gets worse the pump will cycle more frequently and run longer...till finally it will run continuously but won't pump water any more...nor will it give you any warning that it's about to quit pumping water...the pressure will stay up till it quits. And when it does, you can count on that being at the worst possible time...so the time to fix it is now. The cure is inexpensive and not too difficult: a diaphragm kit for about $12...you'll need to specify make/model year of the pump (it's on the pump housing)...one size does not fit all. You'll have to remove the pump to do it, so drain your water tank first--while you can use the pump to do it. And when you put it back, do NOT use wire nuts on the wiring connections...only electrical tape.

 

[Henry Weber]

shortcyle of pump

DonYou will have this condition if there is a small leak like a slow drip somewhere in the system. Have experienced it many times. You will find somewhere a connection is driping slowly.Good luck,Henry

 

[Sam Lust]

Or all of the above

You most likely have the original Sure-Flo pump. I had the same and rebuilt it with ALL new parts. Worked OK for a season or two and started doing what you've described. Just about any of the internal rebuild parts could be the culprit, as well as a leak in the pressurized system between the pump and faucet. I wasn't about to rebuild the old pump a second time, so I replaced it with a new, slightly higher capacity Sure-Flo. Works dandy1You really don't have to empty the water tank. Either clamp off the supply hose, or if it's long enough, hold it above the level of water in the tank, or, (really innovative) stick a plug in the hose!

 

[Fred Moore]

concure

I certenly concure with the answers after just going through the problem. If the pump is cycling you are loosing pressure in the output side of the pump. It could be inside the pump or external. The only sure thing is that you are loosing pressure (water). With a pair of vice grips clamp the output hose at the pump. If the cycling stops find your leak, if it doesn't rebuild the pump, don't skimp get every rubber part for the pump, if you fully rebuild it you will prevent another rebuild next year.. FWIW.. Fred