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Go Back   Dodge Cummins Diesel Forum > 4th Generation 2010 and up 6.7 Liter Cummins > 4th Gen Powertrain
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Old 12-01-2012, 05:31 PM   #1 (permalink)
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How to replace serpentine belt.

Gents:

I need to replace my serpentine belt for the 6.7L 2010. I cannot find any instructions in the forums on how to do it.

If anyone can give advise and indicate a procedure, that would be lots of help.

Thanks.
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Old 12-01-2012, 05:33 PM   #2 (permalink)
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is there a routing diagram under the hood?
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Old 12-01-2012, 06:25 PM   #3 (permalink)
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No, there is no serpentine belt routing sticker anywhere. I do not have the service manual for this model year.

Got the Hane's for '02-'08 so the routing must be the same, just do not know for sure. Mine is a 2010.
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Old 12-01-2012, 06:40 PM   #4 (permalink)
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Take a picture of it from the top and front of truck and another one from under the truck. Then find the idler pulley either use a rachet or a pry bar. I would try just using the rachet if you can.

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Old 12-02-2012, 12:27 AM   #5 (permalink)
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Go to auto zone and get the $16 dayco tensioner pulley and replace that too. You're going to need a buddy and a 1/2" drive long rachet.
The routing is the exact same as the 3rd gen.
My best advise is to take the tension off the belt and slip the belt off of the alternator first.
You must install the rachet to the belt tensioner from the bottom and passenger side of the truck. The hardest part is slipping the belt through the gap to get it off/on the harmonic balancer.
The tensioner has to come off in order to get the belt off/on as well. It's a 13mm bolt head, use a 3/8" drive rachet and shallow socket, or ratcheting wrench, it's kind of tight in there.
Good luck!
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Old 12-02-2012, 09:34 AM   #6 (permalink)
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Quote:
Originally Posted by 1BadCTD View Post
Take a picture of it from the top and front of truck and another one from under the truck. Then find the idler pulley either use a rachet or a pry bar. I would try just using the rachet if you can.

Sent from my SPH-D700 using AutoGuide.Com Free App

No pics needed, there is already a tread on this also under water pump replacement

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Old 12-02-2012, 10:12 AM   #7 (permalink)
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Thank You lonestarwelder and 63boxtop:

Your replies are very informative, nevert thought of getting a new pulley, I guess that these wear out. As to the use of a buddy, it is great advise. Saw on Youtube that this fellow used a ViseGrip to hold tension, may work or may not.

Does not seem that difficult to do, but with the schematic it makes everything easier as it is almos impossible to take a picture of the setup unless one removes the radiator for space.

Thanks. I hope that this thread will be informative to others, as I did not find one in this forum that adresses this serpentine belt maintenance process.

Regards.
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