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drive shaft vibration? 140-160

posted by  walrus3 on  Fri Apr 27 13:30 CST 2007
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last visit: Mon Dec 2 14:20 CST 2013
[RELATED]

You say the vibration changed but didn't improve with a 180° change in
the driveshaft. Do you have the splined slip joint aligned so the yokes
are together like this:



If not, that could be your problem. If they are not aligned right the shift
in rotational velocity is NOT canceled out and you'll get a 1 or 2 per rotation
pulsation in the drive train.

I have put 164 rear mounts in 122s and 140s both. It is pretty tight but you
can do it. Loosening the front motor mounts where they bolt to the frame will
give you a bit of slack. Also you can loosen the crossmember on both ends and
take the vertical bolts out (tranny supported by a jack) to get the mount in
and then pry the boltholes into alignment with an alignment tool (a long skinny
punchlike tool) and put one bolt in while holding it with the tool, tighten the
first bolt and then put the second bolt in. Then tighten the bolts on the other
side.
--
George Downs Bartlesville, Heart of the USA!






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