Landing gear.
Another name for a cogged wheel is "toothed gear," or more frequently just "gear."
four wheel tractor
four wheel tractor
four wheel tractor
gear
one wheel men working tractor
The best gear oil for a Case Vac tractor is Engen Gearlube EP 85w140.
A "mechanical front wheel drive" tractor has front-wheel-assist which means that not only the rear drive wheels pull the tractor ahead, but the front wheels also pull the tractor.
You can buy Tractor wheel weights from Sears of course, I am assuming they are Craftsman. All Craftsman brand are top of the line, Sears is the best place to buy any item with the Craftsman name.
gago
The use of a four-wheel tractor is no different from any other tractor: to operate and pull machinery as a means to "work" the fields.