![]() ![]() Rating varied little and there a few tuning tweaks necessary to suit the application. To designate them, a “1” was added, so the 166 Power Unit had the same engine as the 66 tractor, for example. When they debuted, the primary line of Oliver tractors included the 66, 77, 88 and 99 so the power units corresponded by mounting the engines available in those tractors. Oliver started producing diesel power units in 1950 and offered them with their full range of engines gasoline, LPG and diesel. At a peak load at 1300 rpm, this engine used 2.1 gallons per hour. This unit was rated for a 19 KW generator (continuous) and to pump 750 GPM. Maximum power was 49 horses at 2000 rpm but continuous power was 44.5 at 1800. The 188-D was a 231 cubic inch Lanova six with a 3.50 x 4.00-inch bore and stroke and a 15.5 compression ratio. ![]() ![]() They could be adapted to pieces of towed equipment, such as pull-behind combines and to self-powered equipment like surface compactors. Primary uses were to run generators, pumps, sawmills, concrete mixers, conveyers, balers, air compressors, hammer mills, hoists, winches… anything that needed power where there was no electricity. Power units had many uses in industry and agriculture. One that kept them pretty close to their agricultural roots were power units. Like most Tractor manufacturers, the Oliver Corporation looked for other venues in which to sell diesel engines. ![]()
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