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Pertronix air gap tool

Discussion in 'Early CJ5 and CJ6 Tech' started by napaguy, Jul 24, 2011.

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  1. Jul 25, 2011
    Pack Rat

    Pack Rat Old Timer

    I live in a...
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    So, if I may ask, do they call it air gap or end play? Cause in my experience those are two different things altogether. Guess if I wasn't so lazy I'd go find the instructions and read them again :).
     
    Pack Rat, Jul 25, 2011
    #21
  2. Jul 25, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Well, the end play has to be correct before you can get the air gap within specs.
     
    Patrick, Jul 25, 2011
    #22
  3. Jul 25, 2011
    napaguy

    napaguy Banned

    goldendale wa
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    Well I'm dumb as a rock but I'll try and explain

    By shimming the end play on the distributor you are also changing the gap between the module and the magnetic ring

    I would think the gap would be increased by doing so

    But I'm no mechanic and certainly there are others on this board that can set me straight

    Pertronix calls it air gap and doesn't speak about end play

    I hope to stab the distributor in tonight so well see if it was worthwhile:)
     
    napaguy, Jul 25, 2011
    #23
  4. Jul 25, 2011
    Pack Rat

    Pack Rat Old Timer

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    Forgive my brain fart there, I just remembered how the Pertronix works and also why you might want to use something other than a metallic feeler gauge. Magnets. I'll just go sit in the corner now and play with my bunny with a pancake.
     
    Pack Rat, Jul 25, 2011
    #24
  5. Jul 25, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    The only way shimming the end play will change the air gap is if you add/ subtract shims on both ends of the distributor shaft. You only add them to the bottom/ gear end, though. Add shims if needed to get the end play within spec so that the air gap, after it's adjusted, will be within tolerance. IIRC the air gap is supposed to be .020"-.060", so the end play needs to be .040" or less.
     
    Patrick, Jul 25, 2011
    #25
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