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Subject: timing gear cover question?

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chris eby    Posted 10-21-2018 at 09:07:23 [URL] [DELETE]        [Reply] [Email]  
  • timing gear cover question?
  • I have a late 1939 9n with an aluminum front engine cover (9n 6019 cylinder front) and governor cover (9n 6017 cover-timing gear side).when did they stop making aluminum and switch to cast iron? i think the 8n covers are aluminum,are they the same as the early 9n covers? i don't own an 8n to compare.thanks,chris

    Tim Daley(MI)    Posted 10-25-2018 at 09:50:07 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • I also have a late (NOV) 1939 Ford-Ferguson, s/n *9N-653I*. Yesterday I checked the covers and both are aluminum. I'm not sure if they were switched or not. My uncles have since passed away and my grandfather died the year before I was born so there's no one to ask anymore. I inherited the 9N in 1997. It does have a later 2N aluminum governor with the oil line. I do not know if the covers matter which governor is used or not.

    I also checked my early 8N, built in October, 1947, casting date code "I167" s/n *8N-I55I3* and both covers are cast iron.


    Tim *PloughNman* Daley(MI)

    *9N653I* & *8NI55I3*

    Randy(PA)    Posted 10-21-2018 at 23:50:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • 9N-6019-A and then -B were Grade "B" cast iron, starting in 1939. -A had narrow reinforcing ribs inside, while -B had 3/4" wide flat ribs were used in the -B. This may have been two different suppliers' approach to reinforcing. Don't have any evidence for the -6017 cover except for the 8N-6017-A (cast iron) and -B (aluminum alloy). They both ran from '49 to '51, and revised many times.

    Tim Daley(MI)    Posted 10-22-2018 at 09:47:42 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • Here’s what I found last night, I got out my May, 1950 MPC and discovered some interesting facts. I need to delve deeper but the front cover may have been cast iron. The ’50 MPC shows the 9N-6019-B, used 39-50, no mat’l spec listed but then they hardly ever do, that’s an EI sheet fact and defined in p/n suffix. Then it has 8N-6019-A –Cast Iron AFTER s/n 263843 –just like I called it, when the side mount distributor was added. P/N 8N-6019-B, aluminum, used ’50. The MPC also lists 8N-6017-A, cast iron, and 8N-6017-B, aluminum being used in ’50. In the May, 1949 MPC, the part list stops at p/n 9N-6018 on page 29, and the next p/n is 9N-6149-A on page 30. There’s no reference to the 6019 cover. I am looking at the pdf version on the web site so will have to look into my hard copy further –it may be shown in a different assembly.

    I’m spitballin’ here, but I’d say the original 9N front cover, p/n 9N-6019-A, was cast iron. It was changed to aluminum before 1940, probably early ’39. The same with the original 9N distributor –it was also cast iron, very rare. Parts were being revamped fast and furious back then and many fell thru the cracks of parts books. The original 6-Loop Style rear rims are a perfect example. A few of us concur that some changes occurred when they switched from the aluminum hood to the steel hood, after the first 700-800 units, most likely when the loop rims were declared obsolete and replaced by the box, or Hat Rim. There has to be some major design change for having both a 9N part prefix and an 8N part prefix and has nothing to do with material specs. Front covers appear to be interchangeable. The side timing gear cover, shows p/n 9N-6017 as used from ’39 – ’50. Then the 8N –A and 8N - B units released in 1950 when the other changes were released, mainly when the side distributor was released and proofmeter added.

    Tim Daley(MI)

    chris eby    Posted 10-22-2018 at 04:09:48 [URL] [DELETE]        [Reply] [Email]  
  • Re: timing gear cover question?
  • thanks randy.someone must have changed my cover (9n-6019) as it is aluminum.i have a late 2n motor for parts with a cast iron cover.am I correct in saying that that cover should look (on the outside) and fit the same as the 1939 (9n 6019) cover? that is with the exception of the inside reinforcing ribs.the reason for the questions is my cover is busted.and I want to keep this tractor as close to original as possible. chris

    Tim Daley(MI)    Posted 10-21-2018 at 09:53:40 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • If was to speculate, I'd say cast iron came first. MPC's show 9N-6017 only so that means no change made to it ever. The SEP 52 MPC shows the 8N-6017-B version, aluminum alloy.... I will have to look at both my early '39 9N and my early '48 8N tractors to confirm. Also this MPC shows 9n-6019-B, but no material spec. It does show 8N-6019-B as aluminum alloy. The "B" suffix would indicate at least two versions were made. the March, 1940 MPC lists p/n's 9N-6017 and 9N-6019-B as does all the rest of the 9N and 2N MPC's. I'm headed to farm today so will check mine and get back.

    Tim Daley(MI)

    Rustyal    Posted 10-21-2018 at 09:45:12 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • Guessing they are not the same. Depending on the distributor location though.

    JMOR    Posted 10-21-2018 at 18:12:51 [URL] [DELETE]        [Reply] [No Email]  
  • Re: timing gear cover question?
  • No guessing necessary as front or side mount distributors. Necessarily very different.

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