Balancer pulley R&R.

[Bullseye240]

Ok helped Gunner0812 a little on his truck today and thought I would post some pics of the work.This is the offending part.

 

[Bullseye240]

When removed we see that the rubber has lossened itself form the outer ring and allows the pulley to rotate until contact is made with the attaching bolts causing this:

 

[Bullseye240]

On the plus side GM did design this part so that if it did (and it most likely will) fail. It won't fly off causing severe damage. It seems they installed a bearing in the center that would only turn if the rubber broke down and the outer ring was free to turn. they even thoughtfully included a stop pin to ensure it wouldn't rotate 360 degrees and keep the water pump from turning.:thumbsup: Although as sen above the bolts do a fine job all on their own!

 

[Gunner0812]

No more banging when I turn the truck off! ):h

 

[Bullseye240]

As you can see the pulley simply has four 15mm bolts holding it on to the balancer, no need for a puller to remove. If its stuck a few taps with a rubber mallet should free it. Installing the new one is a simple as bolting it in place and re-installing the accessory drive belt.

 

[Bullseye240]

I'll try to figure out how to upload the video of the pulley while it was still on the truck. MODs a lil help here!

 

[Gunner0812]

It was easier than I thought it would be. Thanks again for your help Bullseyes! :thumbsup:

 

[Bullseye240]

You know in all fairness you did do most of the work while I stood around taking pictures! But glad I could "help".

 

[packratt]

Did you inspect the harmonic balancer while the pulley was off?

 

[Gunner0812]

Took a look at it and it looked good. Bulleyes has the pic of it. For further review and opinions.

 

[Bullseye240]

Here's the balancer for those that want to see it.

 

[TurboTahoe]

Good job guys!

I'm curious why you didn't also replace the harmonic balancer, especially if you were already in that far.

-Rob

 

[Bullseye240]

Balancer didn't look bad to my eye and it only has 180000 miles on it IIRC. Mine currently has 240000+ on it and looks no worse than his. In short it just didn't seem to need it and the puley is'nt that hard to do if it needs it later. 1 Belt and four bolts. Truck is considerbly quieter now BTW.

 

[Gunner0812]

Balancer didn't look bad to my eye and it only has 180000 miles on it IIRC. Mine currently has 240000+ on it and looks no worse than his. In short it just didn't seem to need it and the puley is'nt that hard to do if it needs it later. 1 Belt and four bolts. Truck is considerbly quieter now BTW.

The mileage is actually 130K.