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Fresh Water Holding Tank Pump

Posted: Wed Jul 05, 2017 8:31 am
by Ray4713
My 1987 32' Sedan freshwater holding tank pump is not working properly. The pump is a Jabsco PAR 36950-1000. It kicks on for a short time then shuts off. Then it doesn't kick on again unless I turn the breaker off and then back on. At that point it will restart and run for a short time then stop. I have water in my holding tank and power present at the pump. Thinking it might be a faulty pressure switch ??? Anyone else had this issue or one similar? Any advice is appreciated.

Re: Fresh Water Holding Tank Pump

Posted: Wed Jul 05, 2017 10:41 am
by jralbert
Not even sure if they have a pressure switch. Something overheating? Motor? Jabsco has great tech people. And the units are easy to repair- usually. If you learn the cause, please post.
UPDATE: Sorry, I misread the question and goofily thought you were referring to waste pump. The words holding tank threw me off and I confused it with waste tank. Duh duh. See Jeff's reply below. of course they have pressure switch and as Jeff notes, ditch the one with the belt. I have one in the garage and if you insist on using it, it's yours for parts for just the shipping cost. It actually worked but was in need of alignment adjustment.

Accumulator a must for either type of FW pump

Re: Fresh Water Holding Tank Pump

Posted: Wed Jul 05, 2017 12:19 pm
by barkleydave
I replaced with a sureflow 12 years ago no issues

Dave

Re: Fresh Water Holding Tank Pump

Posted: Thu Jul 06, 2017 5:59 pm
by Fastjeff
If that's one of those pumps with the cog belt drive, do yourself a HUGE favor and accidentally drop in over the side. Get a regular pump and install an accumulator along with it. This reduces the cycling of the pump (and your aggravation level). I made up a little 'pump skid' of plywood (a bottom and vertical piece) and mounted/ plumbed it all up before crawling into the wine cellar.

Jeff

Re: Fresh Water Holding Tank Pump

Posted: Fri Jul 07, 2017 7:16 am
by Ray4713
Thanks for all the replies and advice. It is a belt driven pump . I plan to replace it with a sureflo aqua king II or equivalent. Fastjeff- thanks for the idea of pre mounting and plumbing on a piece of plywood before crawling in for the install.

Re: Fresh Water Holding Tank Pump

Posted: Sun Jul 09, 2017 3:04 pm
by express28
Ray4713 --- If you are interested I still have the fresh water pump left from my 28. I know it's used but it always ran good and still does. It was the belt driven pump (Jabsco - Par Model 36950-1000). I'd let it go for $50.00. Jim B.