Question about Ford 8n,9n,2n, Tractor Starter With Drive

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The bendix drive on my 1949 ford 8n tractor does not engage all the time. It requires a light tapping with a hammer on the side of the starter to cause the bendix to engage. The first starter that I replaced worked fine for a couple of months then the bendix drive came apart, literally. The replacement starter demonstrated the same problem with the bendix drive right out of the box. The starter comany does not know what the problem is, and say it is my tractor. However, I bypassed the electircal system by jump starting the starter and had the same problem

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  • bc28 Nov 10, 2010

    thanks for reply. I have converted to a 12 volt system. Battery only couple years old too.
    Bendix drives were dry out of the box. Lube with motor oil, bearing grease, or something else?
    Thanks again

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  • Ford Master
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I have a tractor like this too. A lot of the problem is the RPM of the Starter shaft. Make sure you have a 6 Volt Armature if you are still running the 6 Volt Battery. There are 2 different Bendix drives, the old style which is the long style and the newer Automotive short style.

To get the shorter Automotive style to fit inside the Bell housing you have to use a Die grinder and make a little room. You may find the Website, Dennis Carpenter.com beneficial. Valu-Bilt is another tractor parts source.

There is a referral to an Improved Ratchet type Starter Drive. You might ask the Re-builder if the part you have is suppose to fit an NAA type tractor. My books show it would be the wrong part if it does. I have read a lot of Parts books and seem to remember some of the Bendix gears were 9 tooth and some were 10 tooth. Your Ring gear is suppose to have 134 teeth.

I believe you are better off testing the Starter before you install it. You may want to check the Starter Draw on a bench at Autozone or Oreillys. The lower the draw, the better the connections are. If you are dealing with a Tractor place, they can certainly bench check the unit.

You may need a stronger Battery with more pop in it Have your Battery load tested too, you may be surprised. When I rebuilt my 8N starter I really did not care for a few plastic components I found inside it. You are going to need to lube up the Bendix good to keep it sliding. Refer to the 2 Websites I gave you for more details. You can always use the Reply feature to update a comment.

Posted on Nov 08, 2010

  • fordexpert Nov 11, 2010

    I think the best lube for this is the Silicon grease they sell for Brake Caliper bolts. This is the stuff they put into the Caliper boots and brake pad contact points to keep the Calipers from freezing up.



    Figure it protects from about everything (water, dirt, heat) and its made to be used when you bolt up the part and its no maintenance after that.

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Pleae vote

thank you

a

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