RVN 406 is a Universal 3 DL dating back to 1958. I am not sure what it did for its first ten years, but my uncle (Thomas Hunter) bought it in 1968 to be used in his logging business. It was his only source of power, so it carried out all duties, including extracting timber, sawing logs with a belt-driven bench and delivering logs to customers.
Maintenance
Uncle Tom used it for these purposes