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Farmall & IHC Tractors Discussion Forum
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Super M letter codes

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Cotton Picker

09-08-2005 07:06:14




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I have a 53 model Super M that has C J after the serial number. I was told the "C" stands for LP gas attachment and the "J" is for Rockford Clutch.

I have been told that IH authorized 500 Super M's to have LP gas made using an outside vendors lp gas system. Would this be one of them?

Any info would be appreciated.




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John A.

09-08-2005 20:36:43




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 Re: Super M letter codes in reply to Cotton Picker, 09-08-2005 07:06:14  
Cotton, if you could post a pic of your tractor it would help. i will bet that yours is a Stage II Super M, since you didn't metion anything about a TA or LPTO. The 500 you made mention too, only applies to the Stage III SMTA models.
Your tractor probably has the cross wise tank, With the Fill,Vapor,bleed, Liquid and vapor fuel valves faceing the rear of the tractor. The steering shaft goes through the tank.
your tank setup will probably look like the tank on the W6, on page 107 of Guy Fays Letter series book.
Now back, to the 500 IH SMTA LPs..... ..
The tank is a longwise tank with the tractor. The steering shaft goes through it too. The one unusal feature is the valve assembly is a mono-valve setup @ the 11:00 position at the rear of the tank (while sitting un the seat) Not a series of valves strung across the side of thr tank.
The SMTA LPs will carry the winged SMTA decal usually. Though I have seen a pic of what looks like A Stage II Super but has TA and LPTO.
Most of those tractors came to Texas and the Deep South or where LP was popular.
A Tank Company in Lubbock and San Angelo Texas was where the tractors were sent.
There are No consecutive Serial #s. At least from what I have bee able to find out.
Tractors were sent to The tank Companies on truck and then the trucks were loaded up with tank and sent back to the factor for compleation too.
All the tractos were concidered Factory built. Not field conversion. Hope this helps.
Later,
John A.

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Cotton Picker

09-09-2005 06:21:34




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 Re: Super M letter codes in reply to John A., 09-08-2005 20:36:43  
Thanks for the info, I found a picture of a SMTA with the LP conversion, I could tell the difference in the tank design. The way you described mine is right on. My SM was built July 3, 1953 so there were quite a few built after it.

LP was very popular here in the Mississippi Delta(cheap fuel and you could not siphon the tank). I was wondering how many SM were LP from Farmall?

Also mine has the flanged rear axel housings so you could attach the high-drum cotton picker to it.

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randy hall

09-08-2005 09:14:53




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 Re: Super M letter codes in reply to Cotton Picker, 09-08-2005 07:06:14  
the super m's were available from the factory with propane, i have a '54 super m that is factory lp. the 500 that were farmed out for the lp conversion were super mta's.



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GP

09-08-2005 07:13:07




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 Re: Super M letter codes in reply to Cotton Picker, 09-08-2005 07:06:14  
Yes, C is the LP burning attachemnt and J is Rockford clutch. I am not sure on the details of the LP system for the Super M tractors.



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Harold H

09-08-2005 08:22:58




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 Re: Super M letter codes in reply to GP, 09-08-2005 07:13:07  
I believe the LP system was vender supplied by Einsen(sp) but was installed on the assembly line by IHC during production.

Harold H



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