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Thread: leak after replacing pump motor

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    Join Date
    Apr 2015
    Location
    AZ
    Posts
    7

    leak after replacing pump motor

    Getting ready for summer, I replaced a bad pump motor and at the same time I did the impeller, diffuser, seal and o-rings which came in one kit (R0445304 Jandy Impeller Replacement Kit) and the back plate o-ring I bought separately. Sadly, I have a small leak where the motor attaches It was my first time doing this and I was so careful I watched every video I could find and I have no idea what I did wrong. Is my next step to take it all apart and replace the seal even though it's all brand new? Does it matter that I have a salt water pool for the seal? I there a different seal that would be better??? The kit I used included a R0479400 Seal. Thanks for any help.

    Inground Cameo Play Pool 3-5.5' deep odd kidney shaped overall 14x36' Pebble Tec finish with 6" Tile at waterline and acrylic lace deck.
    Jandy Plus HP pump with malfunctioning 1.0/1.6 SF 1.65 replacement motor, Jandy CL340 filters, Jandy E1 salt gen, Pentair Creepy Crawly for cleaning

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    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: leak after replacing pump motor

    You've got nothing to lose but time. Take it apart and have a look.

    If the O-ring is nicked or cut, it's bad. If not, grease it up and try again. O-rings need to be lubricated before installation.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

    Join Date
    Apr 2015
    Location
    AZ
    Posts
    7

    Re: leak after replacing pump motor

    I took this all apart again this morning and replaced the seal with another new Zodiac SKU: R0479400 but I noticed something looking through the instructions, it says to hold the back of the motor shaft with a 1/2" wrench and this is the only discrepancy. I had to hold the back of the motor with a 7/16" wrench. That stood out as odd so I measured everything and the seal is 5/8" opening and I measured the motor shaft with 2 different calipers and it is 1/2"!!!

    Now I have no idea what to do
    My impeller screws onto the shaft nice and the impeller screw fits but I suspect my seal is the wrong size???
    I don't know I've never done this before!
    If the "right" part number is the wrong part, how on earth do I find the right seal???
    This one though it is packaged by Jandy the carbon piece has markings on the rubber side:
    JOHN CRANE INT - 01601 - CPA025 93
    Last edited by TechLauren; 05-25-2015 at 01:01 PM. Reason: spelling
    Inground Cameo Play Pool 3-5.5' deep odd kidney shaped overall 14x36' Pebble Tec finish with 6" Tile at waterline and acrylic lace deck.
    Jandy Plus HP pump with malfunctioning 1.0/1.6 SF 1.65 replacement motor, Jandy CL340 filters, Jandy E1 salt gen, Pentair Creepy Crawly for cleaning

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