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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis SPONSORED BY:

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Old 03-23-2011, 07:47 AM
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6.4 Belt Tensioner Replacement

k guys for those who dont want to pay the $400. for the dealer to replace your belt tensioner that "will" come apart if it hasent already out of warrantee, its actually easy if you dont follow the sevice book
from the top of the engine get a 3' bar and push down on the tensioner, then put the pin in to lock it (i made one out of a welding rod) then unbolt it and pull through the bottom of the fan shroud.
bolt the new one on, push down on tensioner again and pull pin thats it your done

A special thanks to Sr Master Tech Rusty for the tips

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Old 03-23-2011, 08:45 AM
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The tensioner comes apart on our engines?
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  #3  
Old 03-23-2011, 08:48 AM
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when the break, yes they come apart my dealer said they are seeing a rise in broke tensioners
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Old 03-23-2011, 09:04 AM
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new one comes with the lock pin in it already?

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Old 03-23-2011, 09:06 AM
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yes lockpin in it from ford not sure about a jobber part
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Old 03-23-2011, 09:49 AM
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One more thing to be concerned about!!!
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Old 03-23-2011, 07:17 PM
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just use a nail. works great as a pin.
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Old 02-13-2014, 10:38 AM
CanDoMyOwnOilChange CanDoMyOwnOilChange is offline
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Quote:
Originally Posted by koboss1 View Post
k guys for those who dont want to pay the $400. for the dealer to replace your belt tensioner that "will" come apart if it hasent already out of warrantee, its actually easy if you dont follow the sevice book
from the top of the engine get a 3' bar and push down on the tensioner, then put the pin in to lock it (i made one out of a welding rod) then unbolt it and pull through the bottom of the fan shroud.
bolt the new one on, push down on tensioner again and pull pin thats it your done

A special thanks to Sr Master Tech Rusty for the tips

I know this is from a really long time ago but the tensioner on my dads truck started to squeak. I was just wondering if I have to do anything else to replace the tensioner like remove the fan cover/shroud I think thats what its called (the thing that says powerstroke on it) or if it really is as simple as you just put it. This would be a big help! Thanks! On another note it's my first real post!
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Old 02-13-2014, 10:54 AM
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Watch this:
6.4 belt tensioner replacement you tube video - Bing Videos
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Old 02-18-2014, 03:19 PM
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any advance notice its about to die??

squeeking?? noise?? rattle etc???
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Old 02-18-2014, 03:21 PM
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squeaking is the notice.
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2013 40' 4-slider stoneridge 5th wheel coming in at 15,400
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Old 02-18-2014, 06:18 PM
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Especially when cold at idle.
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Old 02-18-2014, 09:15 PM
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Do any of you guys that work on them regularly suggest replacing the other a/c belt and tensioner when you replace the primary? Mine has been chirping a little... looked down and saw the body of the primary tensioner is cocked and the belt is riding more foward, so im gnna replace it asap just wondering if i should do the other one while im in there. Thanks
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Old 02-19-2014, 05:12 AM
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Quote:
Originally Posted by mtmatzf150xlt View Post
Do any of you guys that work on them regularly suggest replacing the other a/c belt and tensioner when you replace the primary? Mine has been chirping a little... looked down and saw the body of the primary tensioner is cocked and the belt is riding more foward, so im gnna replace it asap just wondering if i should do the other one while im in there. Thanks
Miles and hours on the motor?
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Old 02-19-2014, 06:18 AM
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72,000 miles about 2700 hours last time I checked
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Old 02-19-2014, 06:18 AM
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