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Thread: How do I replace a Hayward Northstar pump motor

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    How do I replace a Hayward Northstar pump motor

    I had another thread that discussed our system not turning on - which occured three days after installing a new Cell. I was hoping it was related but it seems it is just a wierd coincidence...

    Currently the pump makes a humming sound and heats up real hot but it wont turn on and pump the system. I've checked for loose wiring; tripped circuit breakers and the GFCI. I pulled part of the pump apart (motor lock ring and difuser) to see if the impeller was obstructed - it seemed fine. I could not separate it any further...

    Important questions:

    Is there anything else I can check before I buy a new pump or motor? I'm not a tech so it would have to be homeowner stuff only...
    If a pump is around $600 and a motor is around $300 - doesn't it make more sense to replace the motor only? Or is that a dumb idea and why?
    If I do the motor only - how do I separate it from the seal plate? That's as far as I could get when I tried to tear it down.
    Please help - the wife is all over me about getting this thing working!
    Ross
    26500 gallon rectangular pool & Octagon spa with 100% quartz over gunite. 6ft SRSmith Cantilever Jump board. Aqua logic PS8. Hayward Cartridge filter 4025 & Hayward Northstar pump. Polaris 280 cleaner. 400,000 btu heater. 1500 sq ft concrete deck with area drains. And a partridge in a pair tree... :-)

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    bobodaclown's Avatar
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    Re: How do I replace a Hayward Northstar pump motor

    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: How do I replace a Hayward Northstar pump motor

    Quote Originally Posted by bobodaclown
    THANK YOU!!!!! We're half way there!! Theoretically speaking of course

    The video of the capacitor shows the external capacitor - under that hump. The video of the motor replacement shows the old motor with no apparent capacitor (they say they checked the capacitor) and then a new motor with the capacitor external like the first video. Our capacitor is not apparent either. Does anyone know where the capacitor would be on a Northstar (same motor as the old motor on the replace motor video).

    I also noticed they were using an open ended wrench when they were holding the shaft while taking apart the impeller on the old motor, then they did an edit, then when they returned the chuckled. On the new motor when they were tightening the impeller they had a pool tool for the shaft. I'm guessing I will need that tool too?

    Thank you for the help! It would be too cool if we can do this without hiring a tech.
    Ross
    26500 gallon rectangular pool & Octagon spa with 100% quartz over gunite. 6ft SRSmith Cantilever Jump board. Aqua logic PS8. Hayward Cartridge filter 4025 & Hayward Northstar pump. Polaris 280 cleaner. 400,000 btu heater. 1500 sq ft concrete deck with area drains. And a partridge in a pair tree... :-)

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    Re: How do I replace a Hayward Northstar pump motor

    If the capacitor is not on top of the motor, then it should be under the back motor cover as shown in the picture below on the pump to the right. To remove the impeller, you remove the capacitor and hold the shaft with a 7/16-inch wrench (or 11 mm) while removing the impeller with a strap wrench. When installing the impeller, you hold the shaft with the 7/16-inch wrench and screw the impeller on hand tight, you don't need a tool.



    http://www.youtube.com/watch?v=e1RWd6lae9Q

    http://www.youtube.com/watch?v=WT6FaK3MX4o

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    spishex's Avatar
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    Re: How do I replace a Hayward Northstar pump motor

    The capacitor is on the back on a Northstar because the retaining ring for the housing is too small to allow one on the top. If you end up having to purchase a new motor (hope that won't be the case) be sure to double check the capacitor location for this reason.

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    Re: How do I replace a Hayward Northstar pump motor

    Thank you!!!! We found the capacitor and removed it. The digital multi meter didnt give any reading. I need an analog to double check it. If no reading: we are going to buy a capacitor first and if that doesn't work then the motor...

    Before I let the salesperson sell me whatever they want... how do I know EXACTLY what I need?

    I think I can see this:
    36U - stuff after that is not legible
    370VA - stuff after that is not legible
    40/0702 - stuff after that is not legible
    325P356 - stuff after that is not legible

    Hayward only does email. The service dept at Platinum pools (people who did pool) is voice mail.
    Ross
    26500 gallon rectangular pool & Octagon spa with 100% quartz over gunite. 6ft SRSmith Cantilever Jump board. Aqua logic PS8. Hayward Cartridge filter 4025 & Hayward Northstar pump. Polaris 280 cleaner. 400,000 btu heater. 1500 sq ft concrete deck with area drains. And a partridge in a pair tree... :-)

  7. Back To Top    #7

    Re: How do I replace a Hayward Northstar pump motor

    Go to a local electric motor repair shop. They should have the correct capacitor. Bring in the old capacitor and all of the information from the motor label.

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    Re: How do I replace a Hayward Northstar pump motor

    It worked!!!! $21.64 for a new capacitor and we have our pool operating again!!!
    AWESOME!! Thank you to everyone!!
    Thank you TFP!!
    Ross
    26500 gallon rectangular pool & Octagon spa with 100% quartz over gunite. 6ft SRSmith Cantilever Jump board. Aqua logic PS8. Hayward Cartridge filter 4025 & Hayward Northstar pump. Polaris 280 cleaner. 400,000 btu heater. 1500 sq ft concrete deck with area drains. And a partridge in a pair tree... :-)

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    Re: How do I replace a Hayward Northstar pump motor

    Just another reason why I love this site--------


    Hayward Northstar pump- humming and very hot- followed this thread and replaced the capacitor for $15 took about 30 min.......


    major props!!

    thanks so much!
    16' x 32' 20K rectangle sport, salt, IG vinyl, Hayward Salt system, Doheny Discovery '17, Hayward 2hp pump, Haywood 4 cartridge filter, Hayward H250 heater, built 2007- refinished 2013

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