Re: [Chrysler300] Ball and trunnion conversion

["Kelly Pierce" <jkrestor300@xxxx>]

Hi Guys-
I ran into a vibration problem w/ my 63 Dart Convertible a few years back.
I replaced all the u joint parts- Everything including the housing and the
problem was still there. I had a transmission guy tell me it was the bushing
in the output shaft housing and replace it- still got a problem. So even
though the trany had been out I missed something- The rear tranny mount was
o k but my ex- wife had hit something with the under side at one point and
after remembering that little go round, I checked the cross member that the
mount bolts on and sure as h--- when I compared it to another one the one
from the car was bent upward, changing driveshaft angle. If the mount is bad
or crossmember has been hit on something like mine was it will drive you
crazy looking and spending time and $$$$ to find it!!! Don't do like I did
and over look a minor thing expecting a major job or replacing u joint parts
for nothing... Food for thought.. Joe Pierce.
----- Original Message -----
From: <SADuggan@xxxx>
To: <CHRYSLER300@xxxxxxxxxxxxxxx>
Sent: Thursday, March 14, 2002 8:32 AM
Subject: [Chrysler300] Ball and trunnion conversion


> Hey Everyone,
> An update on the U-joint conversation. I had a vibration in my 62
while
> driving so after checking other things I figured it was the driveshaft.
The
> ball and trunnion joint had some play in it and the rear u-joint was
pretty
> stiff. I bounced around on whether to fix the old joint or convert it to a
> new system. So I took the shaft off and brought it down to the driveshaft
> shop here in L.A. Talking to the guys at the driveshaft shop, they
convinced
> me to convert it. They had one sitting there they had done the day before.
It
> looked like a more reliable piece than my trunnion joint, and even with
> fixing the trunnion joint I worry about wear in the housing.
> When they convert the driveshaft, the shaft is cut about 6 to 8 inches
> behind the ball and trunnion joint. The male end of a slip spline (I think
> that's what they called it) Is welded onto the existing driveshaft. A
female
> end of the slip spline, which has a yoke on one end, is slid over the male
> end. A U-joint connects the driveshaft to another yoke which is mounted on
a
> plate, that has the same diameter and bolt pattern as the trunnion
housing.
> It's fairly straightforward and it seems to be a lot stronger than the old
> joint. If anybody wants to see pictures, Just E-mail me.
> This conversion seemed like the right thing to do, but after
installing
> the driveshaft the vibration was still there. It was better but it was
still
> there.
> To make a long story short, a little arcing of the front brake shoes
caused
> the vibration to go away. At least I won't have to worry about my drive
shaft
> for a while, and when I shift between drive and reverse there's no
clanking
> sound anymore.
>
> I think I've rambled enough,
> See ya,
> Sean
>
>
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