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Thread: Hayward AO smith cooling fan melted off the shaft... now what?

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    Join Date
    May 2014

    Hayward AO smith cooling fan melted off the shaft... now what?

    First post here so hello! Sorry for the crazy newb questions but here it goes...

    Been having some issues with my Hayward SP1580Z2 1hp pump. Last season the motor was making some horrifically loud sounds and stopped pumping water toward the end of the season, I ended up pulling the pool offline and finally getting around to fixing it.

    I pulled the wethead off and the plastic threads that hold the impeller on were completely stripped away from the shaft. Thinking this was the problem I was encountering last season I managed to get the impeller off, bought a new one, and rebuilt the wethead with a new seal and gasket kit. Went to start it for the first time and it pumps water fine now but the motor is still loud as **** and gets hot quickly. Thinking now it can be either motor bearings or something related I tore everything back apart and got the armature off the motor this time. The bearings still spin smoothly but the white plastic fan that keeps the motor cool is completely melted away from the shaft. My thinking is when the impeller threads sheared in the wethead it may have caused some excessive load on the motor...

    The motor is an AO smith 1HP made in Mexico. I don't mind cleaning it up/rebuilding it if it's worth it... Ive been looking on ebay and can find a full replacement Hayward pump for $160 shipped...

    Question are... A) is it even worth rebuilding? B) I found the bearing kit, can I find a replacement fan?


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    Join Date
    Jan 2013
    Houston, TX

    Re: Hayward AO smith cooling fan melted off the shaft... now what?

    Welcome to tfp!

    New bearings could be pressed in, you could call the folks at century ( used to be ao smith ) they would be the authority on the fan.
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

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    Kiss4aFrog's Avatar
    Join Date
    May 2013
    Hudson, WI

    Re: Hayward AO smith cooling fan melted off the shaft... now what?

    Welcome to the forum

    Did you end up replacing or rebuilding the motor ??
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. May 20 - opened for summer
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
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