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Thread: Autolite Generator pulley nut

  1. #1
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    Default Autolite Generator pulley nut

    I need to remove the Autolite generator on our 1950 Chris Craft. I pulled out the sheer pin but cannot loosen the nut. There’s no way to hold pulley still. Do I need a wheel puller for this job? Or does somebody know how to get it off?

  2. #2
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    Default Re: Autolite Generator pulley nut

    Quote Originally Posted by jleer View Post
    I need to remove the Autolite generator on our 1950 Chris Craft. I pulled out the sheer pin but cannot loosen the nut. There’s no way to hold pulley still. Do I need a wheel puller for this job? Or does somebody know how to get it off?
    You will need an impact driver to get the nut off and probably a puller to get the pulley off once the nut is off.

    Here's a how-to vid:


  3. #3
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    Default Re: Autolite Generator pulley nut

    I have similar issues with my generators. I use a big pipe wrench and tren a proper wheel (gear) puller.

  4. #4
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    Default Re: Autolite Generator pulley nut

    +1 on impact driver. Big pipe wrench can damage pully.
    Everything changes . Everything is connected . Pay attention

  5. #5
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    Default Re: Autolite Generator pulley nut

    Before impact wrenches, people used strap wrenches - kinda like a big, rugged oil filter band wrench, only softer strap material.

    If you don't have a strap wrench you can make one: take on old vbelt that's been cut & fits the pulley & an 8-12" piece of tube big enough to put the belt through leaving a loop at the pulley end & a few inches sticking out the other end (more is better). Loop it around the pulley, pull the belt tight & push the pipe hard against the pulley & loop the belt back over the pipe at the other end - and hold the belt tight with your hand. The "wrench will angle some, but you should be able to get it to hold.

    A strap wrench is nice in that you can torque the nut when you put it back on.
    "If it ain't broke, you're not trying." - Red Green

  6. #6
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    Default Re: Autolite Generator pulley nut

    Quote Originally Posted by WHYankee View Post
    +1 on impact driver. Big pipe wrench can damage pully.
    A pipe wrench may leave one or two witness marks on each side. Im not sure I would call that “damage”, or are you thinking of something else?

  7. #7
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    Default Re: Autolite Generator pulley nut

    Quote Originally Posted by nedL View Post
    A pipe wrench may leave one or two witness marks on each side. Im not sure I would call that “damage”, or are you thinking of something else?
    Because of the small contact area, they can distort some pulleys - mostly stamped steel ones - a cast pulley is probably fine.
    "If it ain't broke, you're not trying." - Red Green

  8. #8
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    Default Re: Autolite Generator pulley nut

    Quote Originally Posted by Garret View Post
    Because of the small contact area, they can distort some pulleys - mostly stamped steel ones - a cast pulley is probably fine.
    ok, don’t disagree with this, I probably wouldn’t use one on a sheet metal pulley either. I would hope this one is cast.

  9. #9
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    Default Re: Autolite Generator pulley nut

    Use an 1/2" drive air powered impact gun... You can hold the pulley in one hand to prevent it from turning and the nut will "zip" right off off, at which point you may or may not need a puller to remove the pulley.
    If you don't have an air powered impact gun, take it to someone that does, it is pretty much the only way to do it. Other methods, hammer, pipe wrench, etc. risk damaging parts that might be irreplaceable.

  10. #10
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    Default Re: Autolite Generator pulley nut

    Went back to guy who converted it to 12v, and he did just that. Impact gun - 2 seconds. Done.

    Thanks for the advice.

  11. #11
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    Default Re: Autolite Generator pulley nut

    I just used an air impact gun to get the flywheel nut off and back onto my 15hp Mercury.
    Simple operation!

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