Clark differentials

[mtncrawler]

What was the relationship between Clark and Cletrac? Did Clark build all the steering differentials for Cletrac and later Oliver or how did that work? I know Clark made the S70F-12 that the OC-4 used. Was this a patient issue? I know the military used the OC-15 in some equiptment and refers to it as such did Oliver build it? Alot of questions, huh?

[cletractracks]

clark built a lot of controlled diffs. for many manufactures like the cletrac crawlers. they also put them in early case and i think the terra-trac crawlers and some military track layers also. they were also used in some snow cat type tractors. They also built regular diffs that were used in the cletrac general and b.f. avery , minnie mo b.f. ,and other tractors to name a few. I have a bombardier j-5 tracked machine with a 5' bushhog mounted on rear that uses a clark controlled diff. or a copy of such. i even found an old advertisement from clark showing all the different types of differentials that they offered for tractor and equipment builders to consider. I hope this helps somewhat.