[quote:9981929e42]I have been told that castings need to cure for a period of time before installation. Cummins cures their engine blocks for 1 year (I think) before machining. Ellis[/quote:9981929e42]
While I don't doubt that may be the practice of today, it was certainly not the case 50-60 years ago when these tractors were rolling off the line. Although I certainly wasn't there to watch the parts come from the foundry to the machine shop to the assembly line, there is data to show that they were used as soon as they possibly could bolt them together, as soon as 2-3 weeks in some cases that I have seen. I've also seen in the same production line that used parts very quickly, it also take over a year before a part was used. (all this in the early production of the Cub)
Edit to add "quote"
This post was edited by screwstick at 13:58:46 03/06/12.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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