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assistance with jet pump, please


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First of all, please forgive me - i'm not an idiot, but pools and spas are completely Greek to me, so I apologize for any wrong names, inaccurate descriptions, etc...

Okay, so the wife and I just closed on a house a few weeks ago. Included was a nice, large spa on the deck. The home was owned by an older couple who hadn't used it in years, but took relatively good care of it. It's older though (most recently dated part I could find on it is 1995). Anyway, it turns on fine, jets work, bubbler works, heater works, etc... all is well there. The issue I am coming across is a leak from one of the jet pumps. It appears to be the pump that is directly connected to the heater. There's a spigot before the water that goes into the jet, and when I close the spigot, the heater turns off (independently of me turning off the heater itself). The leak is fairly minor, but if I turn on the jets, it increases quite a bit. It's nothing crazy, but I don't like the idea of water soaking up the deck that supports everything. 

I believe that the source of the issue is a leaky seal - it's been sitting for quite some time without being used, so i'd imagine they are dried up and cracked. From the parts that I looked at online, it seems that the leak is coming from the spinning rod located between (what I believe) is the wet end, and the metal cylinder part of the jet. I've included a picture where the water is leaking, as well as a close up of the parts descriptor on the pump itself. 

Again, I apologize if this is difficult to make sense of, but I would appreciate any and all help. We live up in the Sequoia Nat'l Forest here in California, and the closest spa/jaccuzi specialists are 2+ hrs away, so I'd rather exhaust all of my resources and troubleshoot this on my own before ponying up the extra cash to have someome travel up here. 

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Edited by chadbacca
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1 hour ago, chadbacca said:

hadn't used it in years, but took relatively good care of it.

Mutually exclusive. You cannot take good care of it if it is unused.😉

1 hour ago, chadbacca said:

, it turns on fine, jets work, bubbler works, heater works, etc... all is well there.

You are a lucky guy.

1 hour ago, chadbacca said:

believe that the source of the issue is a leaky seal

Sounds that way from your description.

1 hour ago, chadbacca said:

the wet end, and the metal cylinder part of the jet.

The pump assembly is comprised of a wet-end and a motor. A jet is where the water goes back into the tub, also called a return. The metal cylinder is the motor shaft, which goes into the wet-end and connects to the impeller, and is sealed with the shaft seal.

1 hour ago, chadbacca said:

troubleshoot this on my own

You came to the right place.

You are probably correct about the shaft seal (also called a pump seal) but, looking at the pics, I doubt you will get it apart in one piece to replace the seal. You can certainly try, I would, but expect something you don't have to break, such as the impeller, motor shaft, or thru-bolt anchor in the housing. You will also want to replace the pump housing gasket/o-ring while in there. It can be a PITA on an old rusty pump, so if you aren't mechanically inclined I would recommend a new pump assembly. There is a good chance you will end up buying one even if you try to repair the old one.

Post a few pics not so close-up so we can see what's going on in there. Include the control box, preferably with the box cover off/open, and all equipment including the pump/heater connection.

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