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Old 06-20-2016, 06:50 PM   #1
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fans...

I have a centrifugal clutch fan.. when I bought the truck, it was locked on and made a heck of a noise and literally slowed the truck down..

Fixed that and the beast only came on when the temps hit a certain number.

I now notice that it is coming on more and slow speeds without the corresponding numbers..

I have looked for a grease nipple or something.. does this thing need to be lubed ?

thanx
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Old 06-21-2016, 10:17 AM   #2
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Grassy; a little more info on the truck and engine ; year ? Cat ? Cummins ? Volvo ?; please.
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Old 06-21-2016, 10:27 AM   #3
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Sorry...

2001 fl 60 sport chassis

cat 3126b

123K miles on it
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Old 06-21-2016, 10:35 AM   #4
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Somewhere , I have a diagram for the lube point on the fan hub bearing on the 3126b, but I don't think that a little grease is going to have anything to do with the operation of the fan as far as temps are concerned .
Have you cleaned the radiator lately ?

I'll post the diagram , when I find it.
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Old 06-21-2016, 11:22 AM   #5
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No.

Do I use an air hose or water ?

Thanks
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Old 06-22-2016, 01:17 AM   #6
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Most members report that , Simple Green , works well to loosen any dirt in the radiator , and flush out with water . Tap pressure only not a pressure washer.

Inside and out of the rad , and if the CAC is in front of the rad clean it too , I believe there may be a special version of Simple Green for aluminum, check the label.
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Old 06-22-2016, 07:34 AM   #7
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Will do.

Heading off for a 5K mile run in 2 weeks...want to reduce any possible problems.

Thanks
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Old 06-22-2016, 09:20 PM   #8
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well it is getting warmer, are you running the AC ? my fan uses air to engage the fan
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Old 06-23-2016, 08:40 AM   #9
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Jeep,

That could be it... just is so loud when it kicks in..need to go play and see,,,

Thanks
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Old 06-30-2016, 11:48 AM   #10
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Jeep,

You are correct. We didn't use the air con last year.

I was out tooling about the last couple of days and it seems that the fan will kick in at low speeds regardless of the engine speed. I does go off and you increase speed or turn off the air con. Cool.

Thanks.

Skip, if you could find the diagrams, that would be great..
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