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2. M7 snow tractor - Wikipedia

   en.wikipedia.org/wiki/M7_Snow_Tractor

   The M7 (T26E4) snow tractor was standardized in August 1943, and was downgraded to Limited standard in November 1944. It was intended to pull a one-ton M19 snow trailer (T48). The tractor used many Allis Chalmers farm tractor components. It also used many Willys MB jeep powertrain components to lessen the military's spare parts inventory ...

3. Lombard Steam Log Hauler - Wikipedia

   en.wikipedia.org/wiki/Lombard_Steam_Log_Hauler

   The internal combustion log haulers (called Lombard tractors) were less powerful than the steam log haulers; and resembled a stake body truck on a skis and tracks chassis. The steam-powered haulers are thought to have been used as late as 1929. [9] At least ten of the Lombard tractors were preserved at Churchill Depot as recently as the 1960s. [10]

4. Steam tractor - Wikipedia

   en.wikipedia.org/wiki/Steam_tractor

   Case steam tractor Steam Tractor at the Henry Ford Museum. A steam tractor is a tractor powered by a steam engine which is used for pulling.. In North America, the term steam tractor usually refers to a type of agricultural tractor powered by a steam engine, used extensively in the late 19th and early 20th centuries.

5. Valve guide - Wikipedia

   en.wikipedia.org/wiki/Valve_guide

   The upper part of the valve stem, within the rocker box, is lubricated by oil. If this oil travels unchecked along the valve stem, engine HC emissions will become excessive. To control this, an elastomeric seal is fitted over the top of the valve guide. These may wear or stiffen with age, so are usually replaced whenever valves are removed for ...

6. Advance-Rumely - Wikipedia

   en.wikipedia.org/wiki/Advance-Rumely

   Rumely's most famous product, the Rumely Oil Pull tractors, powered by hot-bulb engine using kerosene, was first developed in 1909 and began selling to the public by 1910. [ 1 ] Meanwhile, Advance Thresher Company was founded in 1881 with a factory in Battle Creek, Michigan .

7. Schrader valve - Wikipedia

   en.wikipedia.org/wiki/Schrader_valve

   The Schrader valve consists of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring. A small rubber seal located on the core keeps the fluid from escaping through the threads. Using the appropriate tools, a faulty valve core can be immediately extracted from the valve stem and replaced with a ...