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Got Hot- Fan Clutch [message #179486] Wed, 08 August 2012 00:50 Go to previous message
George Beckman is currently offline  George Beckman   United States
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma:
Senior Member
Going to church family camp. Roared up to 3000 feet and all was well. Ran air in 95 degree weather. Then we started the twisty-turny road, causing 15 mph speeds. Ran in low most of the time.

Temp went to 210. I thought, hmmm. Air is off.
Temp went to 220. I thought, hmmm, fan clutch ought to engage.
Temp went to 230. I thought, I have to stop because the fan clutch is not engaging.

So we stopped. This made wifie a little alarmed as we had just passed the place where the transmission let go last year. It is not good to alarm wifie.

What I thought I knew:

Did the old clutch roar when you first start the engine? Absolutely. Didn't let loose for a mile or two and must be above 2000 rpm to finally release. Sounded like a B-52 taking off. (By the way, after we stopped to cool for a few minutes and ate lunch, the fan clutch roared for a bit only to stop and not engage again, even at 220 on the second leg.)

Could you twirl the old clutch fan by hand? No. Couldn't get more than a blade or two. Seemed very stiff.

So, I thought that meant the clutch was OK? Not mine, apparently.

How did it look when it came off? Like it came out of the box. I tried to put it over the kitchen stove to see the little bimetal thingy turn the shaft, but gave up and went to NAPA for a new one.

'74 Eleganza, SE, Howell + EBL
Best Wishes,
George

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