How do you test a fan clutch

[Posm]

I had my fan clutch replaced last winter after an accident and it does not seem to "come in" like it did before. The only time it has ever come on is when I have been pulling a load during hot weather. Last week I was pulling a pretty good load and the temp guage got up to about 210 or 215 and the fan never came on.

If it is bad, how much of a job is it to put on. I can see the fan bolts that disconect the clutch from the fan and a large nut on the shaft, but I do not know if it threads off or what.

 

[JohnMcIntyre]

Originally posted by Posm

I had my fan clutch replaced last winter after an accident and it does not seem to "come in" like it did before... .

. If I read your post correctly, there's basically just one ginormous Nut holding that sucker on the crank and it's a left hand thread. A combination of ambient temperature and how hard the engine is working plus a correctly operating thermostat will dictate at what point the fan will usually kick in and start to do what it does under normal operating conditions. You can temporarily bypass the thermostat switch (manual override) to simulate the point at which the fan will kick in to test for correct operation. 190-200 deg F range is normal but, hey what's normal for one isn't always the same for another? I'm sure others will bear me out on this ... .

 

[BFC]

its not bad, did mine a month or so ago. I took the fan off the fan clutch and used a flat wrench to loose the fan clutch, the big nut.



Remember that the big nut(fan clutch) is a left hand thread. I snake it out and back in through the bottom. Reinstalled it in reverse. Pretty easy. As for the test, no very scientific(sp?) but if you can spin with your hand with no resistance, it's bad. (with the engine off of coures )



Hope it helps,



Glenn

 

[Rob Thomas]

Originally posted by BFC

(with the engine off of coures )

Good Tip!!:-laf :-laf :-laf



Later, Rob

 

[BFC]

Smart a$$, you never know man!



Glenn