| [GMCnet] Re: Radiator cooling fan [message #366809 is a reply to message #366807] |
Wed, 15 September 2021 19:32   |
James Hupy
Messages: 6806
Registered: May 2010
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Senior Member |
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The fan clutch can be tested to see if it is serviceable by trying to move
it when the engine is overnight cold. It should have a great amount of
resistance to turning it by hand. After the engine is at operating temps,
you should be able to easily turn the fan blades. If it locks up and roars
when you pull off the highway, and stop for a red light, etc. I would say
that it is working correctly.
Engine temps? I don't know. The clutches all vary a bit on cut in
/out temps. Hot air activates them, not coolant temps, so shroud
construction or modifications will affect that as well.
About all that I know about them.
Jim Hupy
Salem, Oregon
On Wed, Sep 15, 2021, 5:20 PM tom geiger wrote:
> I’ve been reading on radiator cooling fans for the motorhome. Its seems
> like there is a little trouble in both camps. The fan clutches seem to
> fail but I’m also reading some have questions on the electric fans being
> dependable. I put on a new fan clutch years ago and am not sure its
> working like it should. It seems to spin all the time but honestly not
> sure how these fan clutches are suppose to work. Anyhow was wondering what
> everyone is doing on this now.
>
> Thanks,
> TG
> --
> Tom Geiger
> 76 Eleganza II
> KCMO
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