EMD 8269842 piston pin

    Electro-Motive Diesel traces its roots to the Electro-Motive Engineering Corporation, a designer and marketer of gasoline-electric self-propelled rail cars founded in 1922 and later renamed Electro-Motive Company (EMC). In 1930, General Motors purchased Electro- Motive Company and the Winton Engine Co. and in 1941 expanded EMC's realm to locomotive engine manufacturing as Electro-Motive Division (EMD).

    The cylinder walls and piston-pin bearings are lubricated by oil fling dispersed by the rotating crankshaft. The excess being scraped off by the lower ring in the piston.

The excess oil then drains back to the sump, where the heat is dispersed to the surrounding air.

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