series 1 series 2

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I can answer about Stage I and Stage II Farmall H and Farmall M tractors. (if that is not your topic, ignore this)
In 1953 Farmall tractor design was in transition to modern practices. The use of existing inventory and good economic practice meant that the changeover to Live Hydraulics (one of the things) happened in mid 53. There were tractors built in the last of 52 that had some of the features of the Stage I Supers, like disk brakes. Other things like tear drop lights switched to sealed beam pancake style happened as the bulk crates were emptied. Positions of battery boxes, the discontinuance of the belly pump and inclusion of the Live distributor drive based live Hydraulics, and other components were mid year changes. (Stage II)
The big change then hit the dealerships in 54, with the introduction of SMTA.
Then in 55 the introduction of the X00 series of Farmalls and Utility Internationals with TAs and Live Hydro and different sheet metal. THis is not an extreme rendition of the changes, it is more of an overview. Guy Fey's Book on Originality does a better job. Jim
 
From a distance if it has a big square box (hyd res) holding up the gas tank it is a stage II and if it has the plain old support it is a stage I. The other clue is if there are hoses coming from the distributer area.
 
Stage 1 and Stage 2 are inhouse IH terms that were never advertised, but picked up later by the general public. Stage 1 Super H and Super M's had belly pumps that did not give live hydraulics. The stage 2 SH and SM had a live pump behind the distributer. At that time the hyd reservoir was moved to under the gas tank, and the battery was moved under the seat. The stage 3 term used by some people was the Super MTA which added a live PTO and a torque amplifier (TA). There was no factory Super HTA, as the Super H became the 300 which did have the live PTO and TA.
 
probably more than can be explained here because there are exceptions. We have a stage II Louisville SM, but it is a live hydraulic delete, so no reservoir under tank and still belly pump, but does have battery under seat. I would reccomend buying a book related to the leter series to be able to explain all the variations.
 
(quoted from post at 18:29:15 01/22/12) probably more than can be explained here because there are exceptions. We have a stage II Louisville SM, but it is a live hydraulic delete, so no reservoir under tank and still belly pump, but does have battery under seat. I would reccomend buying a book related to the leter series to be able to explain all the variations.

Not to mention they are 60 years old and farmers are not ones to worry about originality. If they wanted live hydraulics they added it. If they liked the under seat battery box they added it.
 
Stage 1 and 2 are defined by a serial number break but as with most things with IH, there were delete options. Not sure why anyone would want the belly pump over the live hyd, some farmers were slow to accept the newer things, I suppose. I drove a 47 H in the 50's, I don't remember the "dead" hyd ever causing a problem because that is all I had ever used.
 
it is stage 2 by serial number. I read somewhere that a lot of the Louisville produced SMs were live hyd delete, but like you I much prefer the live power.
 

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