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Thread: Broken drive dowel in top cam gear ZD30

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    Later in the day
    removed the gear from camshaft,,, Hmm no hole in the back ,its a blind hole that holds the dowel. The broken off piece is still in there. Tappy Tappy ,bang bang , wont come out.
    Try drilling it out , and unexpectadly, its not that hard and drills out easy.
    Hmm that didnt seem to be a hardened pin and the one that just arrived IS.
    Too big to go in, so with a bit of measuring it seems my pin is 4 one hundreths of a mil. bigger than the hole, interferance fit.
    poped it in the freezer along with the pliers to hold it, and heated the gear with a flame, not too hot ,bit more than enough to make my spit sizzle.
    OK al ready,,, go,,, grab the pin with my icy pliers tappy tappy with small hammer ,, and Yah its gone in 6 out of the 7mm of the hole depth.
    I will work out how much it has to protrude and cut it back to that, then just a smig off it so it does not stop the sproket hitting home.

  2. The Following 2 Users Say Thank You to Dagwill For This Useful Post:

    mudski (8th September 2022), Touses (8th September 2022)

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