68 Mustang (289) RWP hose routing

Greg,
The double street elbow was the typical set up. Since the inlet and outlet face the same direction, you need to use the elbows even if you invert the pump. However, leave it plumbed as the original since it keeps water in the pump. If inverted, some of the water over time would drain backwards out the pick up through hull.

Pete,

I replaced the impeller with what should be an identical Sherwood 09959K and I cannot get this thing to suck water up. I initially tried my fake a Lake which at least worked on the last one with pressure. I even tried the bucket inside the boat and it would not pick up water.

I confess to putting on a new hose and fitting on the pump, but changed it back to original to troubleshoot.

I replaced the impeller and placed the fins in the same direction as the old one and used a new gasket. I did not prime the pump or anything.

I did get water to circulate by placing the garden hose directly into the suction hose of the pump. That proves nothing of course other than water will circulate.

Any ideas will be appreciated..

Best Regards,

Greg

You got a new RWP or replaced the impeller in the old one? I ask because that pump body needs some TLC. Yes, check for air leaks as air will pull quicker than water.

Gregman380 wrote: I am just thinkIng I may not have gotten a good seal on the pump.

That's what I was alluding to. I don't know that particular pump, but they usually have a paper or O-ring seal.

Gregman380 wrote: Pete, I replaced the impeller with what should be an identical Sherwood 09959K and I cannot get this thing to suck water up. Any ideas will be appreciated.. Greg

Greg,
There have been reported problems with the Sierra brand impellers. Stick with the OEM. The one I remember was at the SJRR two years ago. Someone had just put the aftermarket impeller in and couldn't get it to work. They played with it for some time and then Art Cozzier pulled out a brand new Sherwood impeller. It was installed and the RWP worked great. What they saw was the Sierra didn't have the annular seal rings on each side of the impeller.

Pete,

Evidently my pump likes the taste of impellers. The new one was only on the boat yesterday and it looks worn in the same spots and the same way as the old one.

It may be that I just have cavitation inside the pump from these rough spots or whatever is causing the damage.

Could this come from a dry pump?

Or should I be looking for a rough spot(s) inside the pump?

Old and New Impellers


Pump pick up

8122pbrainard wrote: put some non drying lube on it like Vaseline.

Where am I wrong Pete...was thinking something water based like KY is better on rubber? (seriously)

Gary S wrote: BuffaloBFN wrote: 8122pbrainard wrote: put some non drying lube on it like Vaseline. Where am I wrong Pete...was thinking something water based like KY is better on rubber? (seriously) Thanks alot Greg, now I have this picture in my head of Pete in his local "Sam Drucker" general store up by his house in Wisconsin asking for some gum,a pack of Camels,a tube of KY jelly,5 bucks of quick pick tickets and a 6 pack of Schlitz

LMAO Gary!

He surely wouldn't be there for points or an impeller.