Since taking ownership of my '83 4x4 I've slowly but surely been working out a the few kinks the truck had. One of which was a bit of vibration around the 2K RPM range.. I've posted a few things on this topic elsewhere but one topic I couldn't really find any clear cut (for my dummy self) instructions or pictures to know for sure if you've got your rear driveline "in phase" or not. I've come across a few sites that suggest one method or another, but while searching for something totally unrelated I came across this picture in the 1985 FSM that clearly identifies how it should be alligned.

I found my shaft was 180 degrees out, so maybe this will cure up the last bit of vibration remaining!

 

good info. .. thanks for posting !!



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