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Thread: Polaris 3900 left wheel not turning

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    Sep 2014
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    Polaris 3900 left wheel not turning

    My Polaris 3900 is 5 years old. (Yes, hindsight is 20-20) Rebuild by company rep in the spring, new hose, new backup valve. Working so-so since, but just was out cleaning my pool and saw the Polaris goes to the wall and just sets there. Lifted it out and saw the two wheels on the right are turning, the left one dead. The thing just keeps getting stuck on a wall or stair and sitting there. Any advice would be appreciated.

    Thanks,
    NanaRose

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    Re: Polaris 3900 left wheel not turning

    That could be a bearing issue or a drive axle. Have you attempted to open on the machine? Bearings and axle tend to wear out on a cleaner than age.

    If you need a little help telling what parts are which i found a useful parts breakdown here: http://www.inyopools.com/parts_polar...?Keywords=3900

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    Re: Polaris 3900 left wheel not turning

    sounds like the bearing in the wheel itself has chewed out. if so then you will need a new wheel.
    16,000lts Fibreglass, Magna Mineral Pool Water
    Jandy CV340 Cartridge filter, Zodiac TRi SWC, Z4 iAqualink, Jandy Laminar Jets, Solar Heating, Spa Jets with Jandy 1.5hp Epump operating everything.

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    Re: Polaris 3900 left wheel not turning

    When looking at the unit out of the pool, should all of the wheels turn pretty easy??

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    Re: Polaris 3900 left wheel not turning

    When out of the pool on the deck with no flow all wheels should turn with minimal resistance.

    Since you had a recent rebuild I would look for something impeding the gears. If it is a chewed up gear then its time for another rebuild.

    You might consider going with a robot. Higher initial cost but lower over time.
    22k gallon IG pebblefina, Jandy 1.5 HP VS, Jandy CV Cartridge filter, Fafco solar panels, Polaris 360 supply side cleaner, waterfall

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    Re: Polaris 3900 left wheel not turning

    Ok. So it appears that the chain was not on properly. I took it apart and got it put back at on. Still having issues though. I am on my 2nd or 3rd backup valve and it appears that this one is bad too. It is constantly spraying water. Is there a reason why the valves keep going bad? I guess it could just be bad luck with the valves but I think it points to something being wrong. Any ideas??

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