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| Was the engine cold at the time? If it's a viscous oil drive clutch [no wiring or controls attached, usually cast aluminum, lots of external ribs] it should have very little rotational resistance when cold, but if you shut down a warm engine, carefully lift the hood and grab the fan [assuming it has stopped] then it should offer a lot more resistance. If this truck doesn't do more than 10 or 15 thousand miles/year, just replace the clutch with a rigid hub at a fraction of the cost and call it good. If you run a lot of miles the viscous clutch can save you a buck or two in fuel, but for most farms it's just not worth the expense/hassle. Check with your dealer or local truck jock for a rigid hub. | |
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466 fan clutch?
