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M117 Viscous fan help
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05-19-2006, 06:54 PM
shandy
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Join Date: Mar 2006
Location: Scotland
Posts: 143
Viscous fan should be able to turn with little resistance when the engine is cold, but as the engine heats up the fan coupling should gradually lock up and at 85c engine temp there should be a fairly high resistance to turning by hand.
Geo.
shandy
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