Well we made it 40 miles from home with no vibration. But had to call
the rollback to pick us up. It developed a real bad leak and lost all
rearend grease. I decided not to look at it anymore today.
Jimmy
doodle@flintemc.net
http://members.flintemc.net/~doodle/index.html
Adam & Lauren wrote:
>
> Tom,
> Here's another shot..... Check the amount of slop between the front
> yoke and the transmission case extension bushing. It is easiest to do with
> the drive shaft off the rear end-just try to wiggle the yoke inside the
> extension. You shouldn't be able to move it side-to-side inside the case.
> Could be you have a worn bushing and the slowing speeds are causing the
> front yoke to vibrate in the case extension.
>
> I had a wicked shimmy coming from the tranny that only occurred from 35-55
> mph. I had new tires and wheels so I decided to replace u-joints and get
> the drive shaft balanced...still had the shimmy. I then took off the drive
> shaft and was able to move it 1/4" sideways. Like an idiot, I threw away
> the bushing (looks like a sleeve) when I put in a new rear tranny seal and
> the yoke was being supported by the tranny extension...this is bad. The
> bushing was loose and had worked it's way out of the extension and past the
> rear seal, so I thought it was a sleeve to protect the yoke from rust.
> duh, check the repair manual next time.
>
> good luck,
> Adam
> '55 2nd 3600
>
> > I am experiencing severe drivetrain vibration. This happens only when I
> > let off the gas at freeway speeds and does not occur during acceleration.
> >
> > The vibe seems to come from the tranny area and on back.
> >
> > I suspect bad U-joint(s). Can anyone confirm these symptoms?
> >
> > Tom B. 57 Stepside 3200
> >
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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