You mention a welded up crack in the housing where it bolts up to the left final drive. If you're describing a differential shaft housing that mirrors the one under the seat platform, then it should not look like an A at all, but either a B or BN. Repeating from the thread a page or two down, the diff shaft housings, bot the left and the one one the right, under the seat, are each 18" wide on a BN and 22" on a B.
That much is fact. The rest of this is speculation, which may be as far as you get unless you know the people who owned the tractor when all of this work was done on it. It's like trying to figure out what was originally what when you find a wide front under what is otherwise a B or BN, or a narrow front under what otherwise looks like an A.
With the dates and serial numbers both as far apart as they are between the motor and the rest of the tractor, and for other reasons, the idea about having an extra motor laying around the factory looking for a home doesn't really fly. A more typical span of dates between different castings would be on the order of three to five months, not fifteen. They would not have shipped a tractor with a dual-fuel hood over a gasoline motor. Also, if you look at the numbers, they would have had a chassis or some part of one laying around for a year or so waiting for a motor instead of the other way around -- highly unlikely I'd suspect. More likely they'd have simply skipped the number and gone on about production. (That's how the total number produced get apart from the last serial number-minus-500 formula on a given model or series.)
I don't know how the line was set up in Chicago or at what point in the process serial numbers were assigned and stamped on a given tractor and motor and matched up. If you look at the chassis plate, the model and serial numbers are usually stamped evenly, as if done with a machine. (The exception on the plates might be seen in the max rpms. I have one stamped very nicely. On my BN, it is obviously handstamped using one die for the "15" and a different die for the "40"). Motors all appear to be stamped by hand, with the characters all a little out of line in different directions and struck to different depths.
Far more likely your motor was replaced at some point for some reason. The repaired damage could have happened after that point and may even be likely. I'd hate to see the original motor if a welded up block and all the unknowns that go with that was a step up.
Not sure what to think of the damage at the rear. One scenario might be that they had some kind of weight in tow when they hit something with the left wheel or dropped it in a hole.
As far as the block, a lot of 113 blocks have a fairly small crack (not as big as you describe) in the area behind the carburetor, and they are usually attributed to freezing. It's possible yours is just an extreme cse of that. Another common repair is seen to the "ears" at the front of the motor where the front casting bolts up. This usually follows having dropped the front end of the tractor into a hole or ditch, stressing and breaking those ears. Not inconceivable that a crack from that kind of damage ran back along the side of the crankcase.
Best I can offer out of all the unknowns is to assume you have a replacement motor, and to find the model number on that chassis serial number plate and see how that matches up to how your rear end is configured, wide (B), narrow (BN), or offset (A).
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
