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Discussion Forum

Farmall H

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RK Smith

03-01-1999 16:32:23

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Just bought an old H. Runs like a sewing machine, everything works - sheet metal good, engine and frame excellent. I don't know the serial number and year of the tractor. I think the serial number plate is missing (not on left side of trans housing) Its not magneto ignition. Anybody know an alternate method of getting the serial number or maybe close, with part numbers from other parts of the tractor. I did find a small plate with the number 2,3 followed by numbers 6688 etched in the metal of the pedestal between the tricycle tires. Could this be it? Thanks, RK Smith

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03-04-1999 14:08:03

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 Re: Farmall H in reply to RK Smith, 03-01-1999 16:32:23  
Looks like you have lots of posts here with advice. I have a '41 H and the engine s/n on r-hand side does match the tractor s/n on the plate on the clutch housing. Also on the main castings look for dates codes like: 10*17* 1. On my H this equates to 10/17/41. There are other indicators too such as the style of pto shaft, bull pinion type (spline or key), etc. All of these have specific date break ins for the change or modification. Good luck.

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RK Smith

03-04-1999 16:29:37

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 Re: Re: Farmall H in reply to john, 03-04-1999 14:08:03  
John and Gray - Thanks to both of you - looks like everything matches up now to prove it's a 41.

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Farmall Gray

03-03-1999 19:24:46

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 Re: Farmall H in reply to RK Smith, 03-01-1999 16:32:23  
RK, in my post below I forgot to ask if you found
a # stamped into the engine block. I think it should be on the right side just below the head.
On some tractors, the engine serial # matches the
tractor serial #. This is not always true but if the #s didn't match, they were usually close.

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RK Smith

03-04-1999 16:23:15

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 Re: Re: Farmall H in reply to Farmall Gray, 03-03-1999 19:24:46  
Gray - found the indented slot where the serial number was stamped on the right side of engine above distributor and toward the front end of the engine. Looks like some numbers, but this is covered up with repainted attempt and/or scratched out for paint prep. Another poster has informed me that sometimes the last digit of the year replaces a symbolic letter representing a year, so the number "9-2-0" on the clutch housing indicates 1940 and matches the Js and Ks found elsewhere indicating late 40 and 41, so - - looks pretty much like it's a 41, which is really remarkable, for the shape it's in.

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The Red

03-03-1999 10:56:23

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 Re: Farmall H in reply to RK Smith, 03-01-1999 16:32:23  
Look on the engine block just above the distributor. You will see a serial number stamping there. If you think this is the original motor on the tractor, this should also help you determine the age, along with the other excellent advice given. Most of the time the motor and frame had the same serial number.

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03-01-1999 19:37:27

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 Re: Farmall H in reply to RK Smith, 03-01-1999 16:32:23  
rk, there may be other ways to find the year model. but i use the letter system. it works like this. farmall started labeling their tractors in 39 with the letter L,40 was m, 41 was n, and so on thru the series. this id letter and other numbers can be found on the rt side of the engine just above the oil pan toward the front. i've had other people tell me that IHC used this coding in their casting numbers too. if you think you might have a super series, the brake drum housings will be different to the regulars. hope this helps.

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Farmall Gray

03-02-1999 18:07:20

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 Re: Re: Farmall H in reply to mark, 03-01-1999 19:37:27  
They started before 1939. My 31 regular has the date codes on the castings. Look at all the major castings for #s like this 12-16-L, 12=12th month,
16=16th day, L=year. So 12-16-L would indicate that part was cast on Dec 16, 1942. According to Guy Fays book,
L=1942, M=1943, N=1944, Etc. This works out on my
BN, the castings all end in "P" indicating 1946
which is correct according to the serial # which
is 171600. If your castings don't all have the same year code, most of them should be the same unless it was built close to the beginning or end of the year. If they are all the same except 1,
chances are that casting has been replaced. If your casting codes are near the end of the year, the tractor could have been assembled early the following year also.

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RK Smith

03-03-1999 15:01:38

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 Re: Re: Re: Farmall H in reply to Farmall Gray, 03-02-1999 18:07:20  
Thanks Gray - with what you said, I'm finding "Js" and "Ks," which I suppose means late 1940 and early 1941. Although, on the clutch housing is 9-2-O and the "O" would I guess mean 1945, so the tractor is either a component of pieces or they built it in 45 with castings from earlier? Say what?

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Farmall Gray

03-03-1999 19:18:40

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 Re: Re: Re: Re: Farmall H in reply to RK Smith, 03-03-1999 15:01:38  
That's a tough question. My guess is that the clutch housing has been replaced. More research is necessary. Check a parts book as to whether
your tractors equipment and serial # correspond.
Look for parts that you can see a difference in and that show a change by serial #. An example would be the seat support. The parts book should show several seat supports and what serial # they were used on. I don't have an H parts book to look at so I cant give you a specific part to look at. Look at other Hs at shows with similar
serial #s and casting dates to see what parts are the same and what parts are different than yours.
Was your serial # plate missing? If not, what year
does your serial# indicate?

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03-07-1999 18:07:28

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 Re: Re: Re: Re: Re: Farmall H in reply to Farmall Gray, 03-03-1999 19:18:40  
all 1939 farmall,s the casting codes in 1939 start with the letter i and then change every year the end or beging of new year may find some over lap in codes, moost casting,s are made and then set out to cure so they were perrty mutch ahead in the foundry shop,s the 1939 and part of 1940 m,s and h,s you can tell just by looking at them what year they are even the gas filler is at a diffrent angle j.w.braun

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