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Fan Clutch Georgia Southern 2-24-03  
How do you know if you need a new fan clutch? Is it bad to spray PB Blaster or WD-40 on the old one?
Pusher vs Puller Mic 1-6-06  
Which is a better RV, a pusher or a puller?
Re: Fan Clutch david 2-24-03  
Fan clutches can be tricky, as they are designed to work at certain speeds and freewheel at others. If you are not having problems with overheating, the clutch is probably ok. With the engine off, the fan blades should free to move. Each engine and fan combination have different engagement speeds, so it's tough to know without a manual.

Don't try to lubricate the clutch, as the working parts are inside the housing. All wd40 would do is rot your fanbelts.
Re: Fan Clutch Joe 2-24-03  
I'm going to assume you are working on the vehicle that had the broken spark plug. If your vehicle isn't overheating, one function of your fan is probably working OK. The other function is to "freewheel" when it is not needed. To check this, start the engine relatively cold and give it time to get oil pressure up and warm a minute or two. Increase engine speed slowly and listen to the fan noise. At the RPM reaches 1,500 to 2,000 RPM, the fan should slow down noticably. If so, your fan is working properly.
Re: Fan Clutch Georgia Southern 2-25-03  
Thank you Joe and David for all your help. I got the old spark plug out thanks to you. And now I am trying to get better gas mileage. Thanks again.
Re: Fan Clutch Eric 2-28-03  
These clutches are a pain in the arse and can KILL fuel mileage and also (if they fail) can ruin your radiator.

I would BROOM it out and put on an electric pusher or puller - manual or thermo controlled.

just my.02$
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