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Three-point hitches are composed of three movable arms. The two lower arms—the hitch lifting arms—are controlled by the hydraulic system, and provide lifting, lowering, and even tilting to the arms. The upper center arm—called the top link—is movable, but is usually not powered by the tractor's hydraulic system.
A hydraulic lift was a popular option on the F-14. O-14, W-14 and I-14 models were produced as well. The F-14 was produced in 1938 and 1939, with a run of about 32,000 units. [6] [7] [8] The Farmall A and B replaced the F-14 in the Farmall small tractor line-up beginning in 1939. Cost was between $800 and $850.
The most common lift table design incorporates hydraulic cylinders and an electrically powered pump to actuate the scissor lifting mechanism. Lift tables can also be driven by pneumatic sources, trapezoidal-threaded screw drives, push chains or by hydraulic foot pump when the load is not heavy. The choice of drive mechanism depends on factors ...
All Ms had hydraulic lifts. Versions were produced for gasoline and distillate fuels. Standard Ms had narrow front wheels on the centerline. Rear wheels could be adjusted on splined axles from 52 inches (130 cm) to 88 inches (220 cm) in width to allow for different row widths. An optional extended axle allowed widths of up to 100 inches (250 cm).
[4] The Model A had a 20-pound stamped-steel disk on the left rear wheel and a 170-pound cast-iron disk on the right wheel; the right front wheel had a bolted on weight. The offset engine benefited front-mounted cultivators, compared with the towed equipment used by competing Ford-Ferguson tractors. [3]
Oliver 660 at a tractor show in Pennsylvania. A three-number sequence was introduced in 1959 with the Oliver 660. The new line was more squared-off in appearance, retaining the green body and replacing previous models' yellow and red highlights with a green-tinged white for grilles and wheels.
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