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Thread: Jabsco water pump coupler

  1. #1
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    Jabsco water pump coupler

    I've got a 1968 18 2+3 with a water pump problem. It has the original 289 Holman Moody and we have a problem with the coupler between the jabsco 11850 water pump and the engine. It is just plain worn out and I need to replace it. Is this an easily found part?

    Jeff

  2. #2
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    whats worn??? if it is the teeth on the pulley on the front of the motor that can be a PITA to find , if it is the teeth on the shaft that is not easy either
    try holman moody they have some stuff from their marine days still laying around

    good luck

  3. #3
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    It is actually both the teeth and the shaft. Is there a name for these pieces? Is there someone at Holman Moody I should talk to?

  4. #4
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    This might be some good reading for you.....


  5. #5
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    Actually the cupler is a aluminum copy od a hydraulic coupler used in log splitters and can be machined to worj on the cranl and pump. Hover it would be cheaper to use a modern day PCM ford crank driven pump. I went the original way at the tune of $504 for just the pump and I machined the rest in my shop.
    I just could not bear to change the system- at least then now two years later I am not so sure.
    Randy owner of Donzis since 1966
    High Performance props 3, 4, and 5 blade. Turbo and Stainless Steel props. Props for old Volvo drives.
    The reason congressmen try so hard to get re-elected is that they would hate to have to make a living under the laws they've passed.

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