ihredo4
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The earliest O-4 came out with the 3 spoke front wheels. Once these tractors got into the orchards it was noted that tree branchs were penetrating the wheel openings and twisting the branchs off. This necessitated a change to the solid front wheels to protect the trees. I'm not sure if the were then standard equipment or as an option but a benefit arose when they noticed the front ends of the tractors wouldn't lift as easily in a heavy pull. The earliest O-4's had a tendency to snap the axle ends when the fronts lifted and the weight came down on the outside edges of the front wheels. The changes of a heavier web thickness of the axle, heavier wishbone and a spring pack above the axle to prevent drooping of the front axle came into effect. Note: when an H or M was ordered with the low low gear the heavy/solid front wheels are typically on them as well. War years may have been an influence on the option of the solid wheels, I don't know. Hope this helps muddy the waters.
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Serial number would be on the 4-series S/N list. They were all made concurrently...W-4, I-4. U-4, O-4, OS-4, etc. Yours is a 1947 model.
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Chuck wagon
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Very informative posts here. I'm sorry for the loss but fortunately she is no longer suffering. I'll be looking this post over quite a bit as I to have an early 400 Diesel (pre W) I'm making the call on to restore or pass it on. Mine is S/N 706 what number is yours. Seen the tag of one in the 600's but that's about all that was left. Both of these came out of Wisconsin.
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Thanks Steve! I'll give you a call at some point. Although my O-4 has been on my family for 42 years, all I know is the serial number (OBH-20225W1) and that it was purchased at a dealer in Green Bay, WI in 1950. In the deep recesses of my memory, there were two sets of fenders. But most of the time it's had what look like W-4 fenders. I'm just trying to do an accurate restore. T...
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Hello, I would like to talk to you about the O-4 tractors. I have 4 of them; One being the 11th one made. There are so many changes over the course of production that I will need more info to narrow it down. I am doing this via phone so cant add much online. Give me a call 620-899-6310. Thanks Steve
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List of Serial Numbers being kept track of
ihredo4 replied to oakvalleyacres's topic in Technical IH Talk
I understand what you are saying red-reaper. What I was doing was keeping the owners name, address, contact information on file. If someone was asking about a specific tractor I could pass the information on to the owner and let them take it from there. -
List of Serial Numbers being kept track of
ihredo4 replied to oakvalleyacres's topic in Technical IH Talk
I have been doing a registry on the O-4, OS-4, I-4, O-6, OS-6, ODS-6, and I-6. I would be willing to add any Orchard tractor and other Industrials. I would like basically the same information as others have been requesting. Also I would not give out any name or address with out owners consent. Guess I should add the W-400 and W-450's also if nobody else is doing them. My email is stroh42468 at yahoo.com Thanks
