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Thread: water pump packing

  1. #1
    Join Date
    Dec 2006
    Location
    Wesminster MD
    Posts
    368

    Confused water pump packing

    Hi guys is there anywhere else to get the water pump packing rope than the local cat dealer? I need it for a thirty but is probaly used on others as well I would think. Thanks in advance, Jason

  2. #2
    Join Date
    Dec 2006
    Location
    Liberty, NC.
    Posts
    2,243

    Default

    try mcmaster-carr you can get it a number of different ways
    www.mcmaster.com
    http://www.mcmaster.com/#packing-rope/=8i690z
    Erik Christenbury
    Cat List: More than some, less than others
    http://www.chriscomachinery.com/ACMOChapter12.htm

  3. #3
    Join Date
    Dec 2006
    Location
    Wesminster MD
    Posts
    368

    Default packing

    Thanks Erik you wouldn't happen to know what thickness I would need do you? Thanks, Jason

  4. #4
    Join Date
    Nov 2006
    Location
    Dallas, TX
    Posts
    103

    Default Water Pump Packing

    I purchased the 5/16" size #9518K84. It worked ok, but they still like to drip for a bit after running. I wish somebody sold a one piece graphite seal that is like what is in a transfer pump.
    Tom

  5. #5
    Join Date
    Dec 2006
    Location
    Liberty, NC.
    Posts
    2,243

    Default

    the problem with a one pice is you would have to remove the shaft to install the seal.
    Just fill it with packing rope ,but not so much that you can not start the nut, and let it run, if it leaks just tighten it up a bit to seal it off.
    The thing about rope packing is it is designed to wear out.
    on my thirty it does not leak until you shut off the motor,
    so just keep a close eye on the seal and keep making adjustments and when you can not tighten the nut anymore just add more packing.
    Erik Christenbury
    Cat List: More than some, less than others
    http://www.chriscomachinery.com/ACMOChapter12.htm

  6. #6
    Join Date
    Jun 2008
    Location
    jackson ohio
    Posts
    81

    Default rope packing

    Not to sound silly but how are you installing the packing? You cant just wrap the rope around the shaft in one continous piece.You have to cut several pieces that just fit around the shaft and but up. stack several pieces into cavity and stager ends like piston ring gaps. You should be able to find graphite or chemical resisant plastic in msc or mcmaster carr as this is the same packing you will find in industral valves.

  7. #7
    Join Date
    Dec 2006
    Location
    Wesminster MD
    Posts
    368

    Default packing

    So I guess I will order the 5/16 packing unless somone else has another size they would recomend. Thanks for your input guys , Jason

  8. #8
    Join Date
    Dec 2006
    Location
    Liberty, NC.
    Posts
    2,243

    Default

    depending on the size of packing you can wrap or cut several pieces. do not worry about the gaps too much because when you tighten the nut it will compress the packing.
    Erik Christenbury
    Cat List: More than some, less than others
    http://www.chriscomachinery.com/ACMOChapter12.htm

  9. #9
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    2,249

    Default Old Fords

    On the old model A fords, you just wrapped the packing continously around the water pump shaft in the direction it turns.

  10. #10
    Join Date
    Jun 2008
    Location
    jackson ohio
    Posts
    81

    Default rope packing

    If you spiral wrap a shaft it will leak when not running, Or you will have to overtighten packing from start. You will limit the life of packing.

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