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Joined: Jan 2003
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our '40 three-speed transmission will require a rebuild soon...are all parts, except case & cover, available through vendors or should we be stockpiling parts from ebay & swaps?.. thanks,  epi
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Joined: Nov 2003
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ChatMaster - 2,000
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doubt you'll need more than synchronizers. you'll need to tear it apart before buying parts you may not need. mike
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Joined: Jan 2003
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mike, thanks...just didn't want to miss any ebay items that we might need and couldn't just buy off some vendor's shelf... rebuilt my m22 rock-crusher thirty years ago...afraid that was my last experience rebuilding manual transmissions... right now, our '40 occasionally pops out of third when slack (no load)...is the shifter interlock responsible for this function?.. also, the shop manual refers to our transmission as having carburized gears...was that a hardening treatment?.. epi
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Joined: Jan 2002
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ChatMaster - 2,000
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I have a lot of NOS parts for that trans. E-mail me.
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Joined: Jan 2003
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bruce, thanks...as mike suggests, when we get it torn down and know what we need, we'll get in touch with you... epi
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Joined: Nov 2001
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Most likely the main drive gear and input shaft are worn. If the pilot bushing gets worn then the input shaft can move. When it moves up and down it can force the main drive gear out of the back of the input shaft. It also rounds the meshing teeth a little which helps to dissengage the gears.
How Sweet the roar of a Chevy four!
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Joined: Jan 2003
Posts: 2,157
ChatMaster - 2,000
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and we can readily purchase all of these parts, if need be?.. epi
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