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Thread: Help with leak in Magnetek motor

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    cincysaab95's Avatar
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    Help with leak in Magnetek motor

    Replaced gasket closest to basket but I still have a leak. It appears to be coming from rear of motor. I'm able to take out screw & twist end of motor but don't know 1) if I can even take the back section of the motor that turns freely off and if so how 2) if there are any replacement parts, gaskets, seals inside that area. Thanks in advance for your help.
    ____________________________________________________________ __________________
    IG VL, 18'x36'x5', Hayward S220T sand filter, Hayward gas heater, MagneTek 1HP pump, Hayward automatic chlorinator, solar cover, Kreepy Krauly. Pool was hole in the ground that I put my money into for the past 5 years but thanks to TFP that changed and I'm enjoying being a pool owner.

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    Mod Squad Bama Rambler's Avatar
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    Re: Help with leak in Magnetek motor

    There should be no way for it to leak out the back end of the motor. Maybe we have the ends wrong. The back of the motor is the one away from the pump (wet) end. The front of the motor is the one that's bolted to the pump end. Which is leaking?

    There is a seal on the motor shaft where it goes into the pump end. That's a common place to have a leak. The seal can be replaced but it requires that the pump be disassembled.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    cincysaab95's Avatar
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    Re: Help with leak in Magnetek motor

    Bama Rambler,
    The leak appears to be on the back end furthest from basket, if that helps? I did replace a gasket on the front end, closest to the basket. Thanks.
    ____________________________________________________________ __________________
    IG VL, 18'x36'x5', Hayward S220T sand filter, Hayward gas heater, MagneTek 1HP pump, Hayward automatic chlorinator, solar cover, Kreepy Krauly. Pool was hole in the ground that I put my money into for the past 5 years but thanks to TFP that changed and I'm enjoying being a pool owner.

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    Re: Help with leak in Magnetek motor

    Magnetek is the motor. We need the pump model. If it's a square lid with two black knobs to loosen it, it's a Hayward SuperPump.

    The leak, if it's dribbling from under the motor where it meets the plastic body, means the seal set has broken or worn out and needs to be replaced.

    Tools needed:
    1/4" nut driver or socket
    7/16" open end wrench
    9/16" socket
    Helpful addition: 15" of extension for the socket/ratchet to be able to reach beyond the back of the motor

    To Replace:
    Steps:
    1) Power Off!!!
    2) Unscrew the two 1/4" bolts on the back of the motor to loosen the end cap. Don't remove the cap yet. Sometimes the screws are seized and snap off.
    3) Remove the four 9/16" bolts that mount the motor to the pump body and pull it away so you can get to the impeller. The diffuser may come out with it. Any water in the pump will come out. If you have a flooded suction, close all valves! Let the water run into the ground.
    4) Remove the motor's end cap. Another 1/4" bolt is securing the capacitor. Remove it and move the cap out of the way.
    5) Insert the 7/16" open end into the motor, towards the center shaft. It has a couple of indents that when lined up (rotate the impeller to turn) will allow the wrench to slip over the shaft.
    6) Unthread the impeller from the front of the shaft. The wrench will hold the shaft.
    7) Replace the seal set that is now exposed, one seal with a spring on the impeller and the a white teflon ring with a rubber ring holding it on the seal plate.
    8) Reassemble in reverse order.

    Sometimes the impeller is seized onto the shaft. You can try to break it off but make sure you can get a replacement. Sometimes, its stuck and there isn't anything you can do about except replace the pump. This doesn't always require replumbing if the original pump body is still OK. Then it's just removing the four 9/16" bolts keeping the front and back halves and moving the new back half to the front half and moving the electrical connections. Save the new pump body for parts!

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Mod Squad Bama Rambler's Avatar
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    Re: Help with leak in Magnetek motor

    Take a good look around while the pump is running and see if you can figure out exactly where the water is coming from. I think it's probably the shaft seal and if so, Scott gave advice about how to change it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    cincysaab95's Avatar
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    Re: Help with leak in Magnetek motor

    Thanks Scott and Dave. I'll print the instructions and give it a try tonight. Appreciate the help and advice.
    ____________________________________________________________ __________________
    IG VL, 18'x36'x5', Hayward S220T sand filter, Hayward gas heater, MagneTek 1HP pump, Hayward automatic chlorinator, solar cover, Kreepy Krauly. Pool was hole in the ground that I put my money into for the past 5 years but thanks to TFP that changed and I'm enjoying being a pool owner.

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