Re: 1996 Thump? Here's the solution. -- Big Bronco Board

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Date Posted: 22:17:05 05/11/03 Sun
Author: Pat
Subject: Re: 1996 Thump? Here's the solution.
In reply to: Dick K. 's message, "Re: 1996 Thump? Here's the solution." on 19:44:42 09/10/99 Fri

>
That's crazy. I wish I had seen this site earlier. I bought a 96 with the thump. It worried me at first, but a couple days after I bought it, I lifted it and the thump dissapeared. I guess I should go and lube those splines. That was two years ago.
>I have a '96 Bronco with the same thump as you(or,
>more correctly, I did have it. I fixed it in about an
>hour). The problem is in the rear driveshaft slip
>yoke assembly. Cut off the metal clamp that holds the
>slip yoke rubber boot to the front half of the drive
>shaft. Make witness marks with chalk on the rear
>Ujoint and where it bolts to the differential and on
>both halfs of the driveshaft at the slip joint. This
>is so it can be put back together the way it came
>apart without affecting the balance. Unbolt the rear
>Ujoint from the differential. Mine was bolted to a
>flange so there was no problem with the Ujoint bearing
>caps. If you have the U_bolts, unbolt them and wrap
>tape around the Ujoint bearing caps so they don't fall
>off. After unbolting the Ujoint, pry the Ujoint yoke
>away from the differential and lower the rear of the
>driveshaft. Slide the rear half of the driveshaft out
>of the slip joint. Generously grease the inside and
>outside splines. Put the whole thing back together.
>Use a long plastic cable tie (get them at Radio Shack)
>to clamp the boot back on. Don't use one of those
>steel screw type clamps...they could throw your
>driveshaft out of balance. Viola! No more thump!

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