Water Pump ??

Will check, thanks Don

Brian.....Take a look at the ground wire and make sure the connections are good. Sometimes that wiring (ground) will disappear into the coach and you'll spend hours chasing it down. In this situation, just add a new ground close to the unit.

If you have several momentary switches throughout your coach, that means you have a water pump controller. They're about 2" x 3" and about a 1/2" thick, and are generally mounted within a foot or so of the water pump, usually up on a side wall of the water bay. You may want to check the connections on it. When a water pump controller is used in a motor home, it's wired differently than how common 12 volt wiring is done.

The hot side (+) of the water pump is wired directly to water pump and the ground is wired to the pump controller. Every time you push one of those momentary water pump switches, it connects to ground, either turning the pump on or off.

supercub wrote:
I've had the water pump quit twice now. First time I went out to investigate and found an inline fuse. Took it out and it was fine. Replaced it and pump fired up. Today, it stopped working, waited a few seconds, turned the switch off and then back up and pumped started. Is this a sign the pump is on it's last legs? or ??
Thanks
Brian

Well Sir,
You don't say how old the pump is, or, year, make, model etc. of the coach. You see, there are versions of Shureflow water pumps that have reputations for issues and or problems. And, based on age, compartment humidity, and a few other things, they will do EXACTLY what yours has done.

The electrical connections can become even the slightest bit corroded and cause your first issue. All you did was "wake them up" so to speak. By removing and replacing a perfectly good fuse, you simply cleaned the connections and, electricity could flow again and make your pump work.

On some of the coaches, it's been said that the wiring to the pump was below standards and, that too would cause issues. Some have re-wired it with larger gauge wire and, haven't had any problems since.

Some, like the pump that came with our coach, can develop a STAGNANT phase. In that, if not used for a while, the pump kind-of, locks up. I too had a "non op" situation a while ago. The pump that came in our coach was called the ShurFlow Smart pump. It was one of Shur flows largest GPM pumps at 5.7GPM.

But, those pumps were know for issues and premature failure. Many had to replace them under warranty and, a few times after the warranty. Shur flow ceased to produce those a while back and, one of the replacements is the 4008 at about 3.5 or 4 GPM at 40-50 psi.

I had to wrap on ours a few times to get it to work. That's after 11-12 years of successful service without one issue.

So, don't be so quick to throw that one away. It might just need some TLC in the electrical connections etc.
Scott

could be or the impeller or strainer is clogged, causing the pump to strain and overheat. first overheat blew the fuse, second overheat probably tripped a PTC resetable fuse inside the motor.

oh, check voltage at the pump, if it's low, pump might draw more amps, causing it to heat up

strainer should be easy to clean, servicing the impeller, depends on the model.