Allis Chalmers HD7

The Allis Chalmers HD7 is a powerful crawler tractor built for both agricultural and general use. It runs on tracks instead of wheels, making it great for working in tough soil conditions. The HD7 has a sturdy build, measuring 128 inches long, 81 inches wide, and 69 inches tall. It's a heavy machine, weighing 14,000 pounds, which is about average for tractors of its kind.

Under the hood, the HD7 has a General Motors diesel engine with three cylinders. The engine is liquid-cooled and has a blower to help it run better. It has an average engine size for its class, with 213 cubic inches of displacement. The engine runs at 1,500 RPM, which is on the lower end compared to other tractors. This tractor has a sliding gear transmission with four forward gears and one reverse gear, giving the driver good control over speed and power. The HD7 also features an electric starter and an oil bath air cleaner to keep the engine running smoothly.