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Subject: distributor gear

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Don U (IN)    Posted 01-23-2018 at 22:19:44 [URL] [DELETE]        [Reply] [Email]  
  • distributor gear
  • I have pulled the distributor from my 57 960 tractor to replace what I think
    is a worn bushing. I may need to do the same to my 52 8N also but am using
    the 960 first for practice. My question is how is the drive gear on the
    shaft removed? Is it a solid pin that must be driven out? That is how
    it appears, but looking for confirmation before attempting and messing
    things up. Any words of wisdom would be appreciated. Thanks

    DEREK BARKLEY    Posted 01-23-2018 at 22:46:32 [URL] [DELETE]        [Reply] [Email]  
  • Re: distributor gear
  • The gear on the 960 has a solid pin through it that must be driven out. Same for the 8N but the 8N has an additional collar with a pin through it as well. If you have to resort to drilling the pin be very careful not to enlarge the hole as this creates slop in the gear. In rebuilding theses types of distributors you must also make sure the center of the cam and weight assembly is not worn where it rides on the shaft. If this is the case scrap it and buy a new one. The correct cam and weight assembly is not available for sale to my knowledge.

    JMOR    Posted 01-24-2018 at 00:14:24 [URL] [DELETE]        [Reply] [No Email]  
  • Re: distributor gear
  • ...and I will add, that it is amazing how hard that pin is to remove, even with a good press!

    AL CT    Posted 01-24-2018 at 10:38:07 [URL] [DELETE]        [Reply] [No Email]  
  • Re: distributor gear
  • A life long tool maker / mold maker will attest to the statement that's one difficult pin to remove. I had one that was so stubborn, I used an EDM (electrical discharge machine) to burn out the stuck pin.

    Tim Daley(MI)    Posted 01-24-2018 at 14:18:23 [URL] [DELETE]        [Reply] [No Email]  
  • Re: distributor gear
  • A tap burner machine will work too...35 years manufacturing engineering, NC & CNC machining, QC, and management.

    Tim Daley(MI)

    Don U (IN)    Posted 01-24-2018 at 21:08:07 [URL] [DELETE]        [Reply] [Email]  
  • Re: distributor gear
  • Well, guess I got really lucky. Your experience with tough to remove pins,
    made me re-think my removal method. I milled a a piece of 1/2" cold roll steel
    with a half round spot to fit the hub of the gear and a hole to drive the
    pin into. Welded this to a flat piece of steel scrap and clamped to my
    heavy welding table. This gave me a solid backing to drive the pin out.
    It was a solid rivet like pin with a head on one side. A few solid taps
    with a drive pin punch, it started moving and came out. The gear was still
    very tight on the shaft and needed a gear puller to remove.
    I want to thank you guys for the responses, they made me proceed with
    a lot more caution. Now I hope it goes back together with no issues.

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