Posted by John A. on February 29, 2008 at 21:31:22 from (138.210.117.82):
In Reply to: M farmall LP? posted by BradA on February 29, 2008 at 11:33:19:
Brad, There keeps on being some good correct info and incorrect info on when IH first started "Factory Fuel" LP Opition on the M lineage of tractors. There were no "Factory LP Fuel" opitiond tractors till the Super Ms! All regular ol run of the mill Ms were either Gas, Diesel, or Distillate! The serial # of the tractor you gave is X1 this denotes a "1949,Gas" fueled tractor. So this tractor is a conversion, either Farmer, IH Dealer or LP gas Dealer done! The Super Ms Stage I and Stage II had the cross-wise tank with the Fill/Bleed and Liquid/Vapor valves faceing rearward. Just like the example of the SW4, on PP-107 in Guy Fays Letter series Book! On the Super M Stage III, AKA....SMTA s. With the redesign of the (longer) Torque Tube to accomidate the TA unit. IH choose to go "out of house" for the LP systens. IH records are scares, to the point of non-existant. The info that is known of, has been put together from Old IH Employees, Mechanics, and Guys who went around the country converting them also. There were 500 tractors to be made, There were no known consecutive serial #, No rhyme or reason to the tractors used. The tank design that is more often than not that is seen on The SMTAs were the longwise tank with a mono-valve unit @ the 11:00 position at the rear of the tank (looking at the tank as if you were sitting in the seat). Tractors were sent to the Tank companies in Lubbock or San Angelo Texas less carburation and tanks. Tanks and Carburation were sent back to the factory for completion there. Also there is some info indicating that there were 4 other tank companies scattered throughout the South that did this work too. That is why for the different tank designed we sometimes find on these tractors. The first truly redesigned for LP engines was not till the 400/450 series tractors. And this has to do with the Head more than anything else. That is why the Pullers want LP heads for their tractors. Hope this helps, Later, John A.
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