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Subject: 1952 8N s/n 499985 6 volt Rotor & Cap

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Charles E. Carroll    Posted 12-27-2018 at 18:30:57 [URL] [DELETE]        [Reply] [Email]  
  • 1952 8N s/n 499985 6 volt Rotor & Cap
  • I have purchased several rotor/cap assemblies from Tractor Supply, always making sure I read the application. In the past several years, after cap & rotor replacement the tractor starts fine and I use it off and on for a couple months. Suddenly it will quit. So this time, knowing I had replaced the distributor parts, I started at the key and went through all the wires. No start. Drug it into the garage for a long stay and started from one end to the other. I went to TS and purchased a rotor and cap. Did not replace the points. Checked the gap and burnished. Hit the starter and varoom. But, being in the garage I could hear a click, click, click. Then bam, it stopped. Looked in the distributor and the rotor was in pieces. Taped it back together and compared with the old rotor. It looks like the rotor does not go down on the dist shaft and hits the top of the cap. I can see where the rotor was grinding away. Looked at my old cap and same thing. It ground away until there was interruption of spark.
    That TS Rotor will not go down far enough to clear the cap.
    I'm not sure what is going on but I'm off 20 miles to TS tomorrow. Probably wont get an answer from them.
    One other thing, don't know if it means anything. My old rotor had a 1 stamped on it. The TS rotor had a "2".

    Tim Daley(MI)    Posted 12-30-2018 at 05:49:40 [URL] [DELETE]        [Reply] [No Email]  
  • You can usually find some good answers by searching the archives for old posts as most every topic on these old Fords has been discussed before. SEE LINK below for one regarding the same issue you are having. Also, here's a diagram from an old post from JMOR as well. Just so you know in the future, Case/New Holland does not have any better parts and as you said, you paid double for them. CNH sells the same stuff as everybody else, usually made in Cheena. FORD TRACTOR has been gone since the early 1990's. Dennis Carpenter reproduces a lot of the original parts for these old tractors, is the only one licensed by Ford to do so, but parts like this are still secured from aftermarket suppliers as well. All the NAPA parts are made in the USA or MEXICO.

    -Diagram courtesy of JMOR

    Tim Daley(MI)

    Charles E. Carroll    Posted 12-30-2018 at 12:11:28 [URL] [DELETE]        [Reply] [Email]  
  • Thank you very much!

    Rustyal    Posted 12-29-2018 at 09:12:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1952 8N s/n 499985 6 volt Rotor & Cap
  • Ive had a problem with the rotors moving around and just not fitting. Pretty sure my shaft is needing replacement. And really my distributor just needs to be rebuilt. I tried to rebuild the distributor but it just wouldnt come apart. So, using red locktite the rotor is exactly where it should be now. And not moving around. The shaft moves around but the tractor still runs and cranks very dependable.

    Scott PA    Posted 12-28-2018 at 21:41:32 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1952 8N s/n 499985 6 volt Rotor & Cap
  • You lost the little spring clip that holds the rotor tight on the dist. shaft. Without it the rotor wobbles and catches the cap contacts and breaks.

    Charles E. Carroll    Posted 12-28-2018 at 23:57:56 [URL] [DELETE]        [Reply] [Email]  
  • 8N side mount distributor
  • Nope. The clip is there. Drove to New Holland dealer, purchased new rotor and cap. Twice the price. Installed and started the tractor three times. No contact in Dist cap. Rotor still made in China. The only difference I can see is the contact points in the NH distributor cap look like they have been relieved. Nice and clean machined. The TS cap isn't made quite the same.

    Farmer Dan    Posted 12-28-2018 at 08:26:21 [URL] [DELETE]        [Reply] [Email]  
  • cap and rotor
  • I buy all my ignition parts from NAPA, use the Standard brand not the cheap ones. Echlin and Blue Streak are made by Standard. Are you using the gasket under the cap? Is there any play or movement in the distributor shaft?

    Charles E. Carroll    Posted 12-28-2018 at 10:47:50 [URL] [DELETE]        [Reply] [Email]  
  • 6V Side Mount distributor. "Thanks to all replies"!
  • There is no gasket. No play in the shaft. I've had this old boy for 20 years. I drive a 73 Ford truck (since 74) and 59 Ford truck. Put in a lot of points over the years. Never had a cap and rotor contact. The cap is seated until the side springs snap in place. The fact I had never come across this issue is why I chased down all the wires first. Inside the distributor with rotor contacting the top was the last place I looked. This should not happen even with a "cheap" cap. I'm going to town and see if I can locate a Blue streak rotor and measure the darn thing.

    Farmer Dan    Posted 12-28-2018 at 10:51:37 [URL] [DELETE]        [Reply] [Email]  
  • Re: 6V Side Mount distributor. "Thanks to all replies"!
  • while you are there get the gasket set and put a gasket under the cap. IF nothing else it will help keep water out of the distributor.

    Dean    Posted 12-29-2018 at 11:51:44 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 6V Side Mount distributor. "Thanks to all replies"!
  • Bingo.

    Not really a gasket but rather a square cut neoprene O-ring.


    Tim Daley(MI)    Posted 12-28-2018 at 07:29:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 1952 8N s/n 499985 6 volt Rotor & Cap
  • Yep, it matters where you buy from, Dennis Carpenter, Just 8Ns, Steiners are but the best. Points are important. It is best to use the good brands like ECHLIN, Blue Streak, or Standard Ignition. They all have the phenolic rubbing block not plastic like the cheap ones, and their quality is superior. Now, the last set of TISCO points I had lasted 6 years and also had a plastic rubbing block. TSC sold TISCO parts years ago but no longer. I like the TISCO kits as they include a .015" feeler gage for setting the ignition point gap with. I usually buy from NAPA as all but the ECHLIN points are Made In the USA. ECHLIN is made in Mexico -still beats Cheena. Here are the NAPA crossover part numbers for the FORD front mount distributor:

    CAP: FA-350 or FD-126
    ROTOR: FA-300
    GASKET KIT: SPAREX, S, 60308

    Tim Daley(MI)

    Jim    Posted 12-29-2018 at 02:58:51 [URL] [DELETE]        [Reply] [Email]  
  • 38355
  • Tim, I have a later side mount 8N. Do you have the same information for those units as above? Thanks

    Tim Daley(MI)    Posted 12-30-2018 at 04:47:36 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 38355
  • Jim-
    We have this information in the HOW-TO's forum, here's the LINK:

    Tim Daley(MI)

    Jim    Posted 12-30-2018 at 08:21:29 [URL] [DELETE]        [Reply] [Email]  
  • Re: 38355
  • Thank you.

    Bruce (VA)    Posted 12-27-2018 at 18:41:07 [URL] [DELETE]        [Reply] [Email]  
  • Re: 1952 8N s/n 499985 6 volt Rotor & Cap
  • I buy chicken feed and t-shirts at TSC. Never, ever buy tractor parts there.

    Just8N's and Dennis Carpenter are excellent sources.

    If you can't wait for shipping, go to NAPA.

    But never TSC.

    Jim    Posted 12-29-2018 at 03:01:25 [URL] [DELETE]        [Reply] [Email]  
  • 38355
  • I used to buy a lot of chicken feed there and also bought Muck boots but their boots are expensive since they don't last long. My wife's last forever and she wears them much more than I wear mine. Can't figure that out.

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