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shake between 25 and 35 mph

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A new issue has come up.  

 

I have a very noticeable shake between 25 and 35 mph.  it is VERY similar to a tire being out of balance, but I have never had a tire do that at such low speeds. 

 

Doesn't matter if you are increasing or decreasing speed, doesn't matter if you are on the brakes or on the throttle moderately.  WOT you don't feel it but that might be because the truck is rough anyways.  

 

Does matter what gear or rev, just that mph is between 25 and 35 mph,         it clears up pretty much as soon as you hit 36 mph.  

 

 

Tires?  

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  • dripley
    dripley

    Drive shaft maybe. Had an old 68 Falcon that did that and nobody could figure it out until the drive shaft fell out. Lost the front yoke or u joint not sure which now. That was back in 1969, my first

  • TFaoro
    TFaoro

    Your truck driving around =     

  • Me78569
    Me78569

    Well it's not the front drive shaft.     Pretty sure it is the carrier bearing....Mike was right I guess, the wrong way to install a carrier bearing is with a hammer hahah

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1 hour ago, dripley said:

Still want to do the driveshaft just because it has so many miles on it.

If it ain't broke don't fool with it, leave well enough alone, go fishing. 

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Edited by IBMobile

    • Like 1
    24 minutes ago, IBMobile said:

    If it ain't brook don't fool with it, leave well enough alone, go fishing. 

    I know where you are coming from. Just adding it to the want to list. Got some oil leaks ahead of that one.

    • Author

    Well no more shake.  Ended up have 2 completely trashed u joints in the rear shaft and 1 questionable u joint.  Who knows if the center support was bad but I replaced it too.

    Good to hear. Did you use the oven trick on the carrier bearing? Whats the trick to getting it off?

    • Author

    A bfh to get it off.

     

    Oven trick to get it on with some light taps to seat it.

    @dripley Before you buy the new joints...  price out a one piece.  I was away from my tools and decided it was worth the extra cash to order a bolt on one piece.  Had i been home, i might have rebuilt it, but it was worth it at the time.  

    The joints are sitting in a box next to my chair. So I am pretty well committed to just building what is there.

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