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fan came off...

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Old Jun 29, 2012 | 04:17 PM
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fan came off...

Well.i did not ever think this could happen...the fan came off the water pump and destroyed my radiator....i just did water pump but have 200 miles on it since...im baffled...
 
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Old Jun 29, 2012 | 05:31 PM
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cause you did not put locktite on the threads, rite?
 
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Old Jun 29, 2012 | 05:59 PM
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I never have in the past.it is getting electric ones now.
 
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Old Jun 29, 2012 | 06:16 PM
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I never use locktite also might not have been tight enough upon installation that can cause the fan to loosen up enough then fly off when the motor is shut down at a point
 
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Old Jun 29, 2012 | 06:19 PM
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It tightens as it runs...that is the part that makes no sence...
 
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Old Jun 29, 2012 | 06:37 PM
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yes but you still have to tighten it down when you install it to keep it from happening because when you shut off the motor the fan hub stops but the clutch and fan keeps spinning also a possibly is a locked fan clutch
 
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Old Jun 29, 2012 | 06:51 PM
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Unhappy

Originally Posted by fordman67
Well.i did not ever think this could happen...the fan came off the water pump and destroyed my radiator....i just did water pump but have 200 miles on it since...im baffled...
Oh, thats very sad.

FAN CLUTCH NUT TORQUE

48mm fan clutch nut. Tighten to 84-113 lb-ft,
pretty hard to get a torque wrench on it though. You just tighten it a much as you can pull the wrenches.


 
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Old Jun 29, 2012 | 06:54 PM
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Question

Originally Posted by rodneywar
yes but you still have to tighten it down when you install it to keep it from happening because when you shut off the motor the fan hub stops but the clutch and fan keeps spinning also a possibly is a locked fan clutch

You will hear the FAN NOISE if that were the case, wont you?

 
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Old Jun 29, 2012 | 07:01 PM
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Originally Posted by RÖENTGEEP
Oh, thats very sad.

FAN CLUTCH NUT TORQUE

48mm fan clutch nut. Tighten to 84-113 lb-ft,
pretty hard to get a torque wrench on it though.
You just tighten it a much as you can pull the wrenches.


and that is why i always use locktite.
i saw way too many fans into radiators over the years. but not one with locktite on the threads has ever come off.
 
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Old Jun 29, 2012 | 07:07 PM
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Sounds like a motor mount is bad. Fans turning and then hits the radiator while turning can actually dislodge the nut if its a little loose.

But sounds like a motor mounts bad to me...

edit add on

or the btm of the radiator is not setting in the channels or a combo effect
 
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Old Jun 29, 2012 | 07:13 PM
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Hi Rock. Nice lookin new truck!
 
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Old Jun 29, 2012 | 07:14 PM
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I don't use loctite on fan's either, I'd have to agree on the initial tightness maybe not enough??
 
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Old Jun 29, 2012 | 07:17 PM
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Originally Posted by RÖENTGEEP
You will hear the FAN NOISE if that were the case, wont you?

true lol
 
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Old Jun 29, 2012 | 07:18 PM
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Wink

Originally Posted by 427 fordman
Hi Rock. Nice lookin new truck!
Thanks Darin
What about the older one? Its still with me.

Just kidding. but I have it and it stays in the garage lol

Back on topic I have never heard of this unless theres some extream vibration --- steady bearing issues or motor mounts.

Check the fan shourd to and I bet its scored where the blade was hitting.

then again I have been wrong before. But what the hey. Hope everyone has a great Friday evening and night- hot sum buck out there.
 
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Old Jun 29, 2012 | 07:20 PM
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I know this may sound insensitive, but I really want to see pictures.
 
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