[timmay556]

My rear tail shaft is out of phase, it looks like I should be able to:
Unbolt the short end (narrow)
Pull back the rubber boot on the slip joint
Remove the retaining nut (I guess it’s threaded)
Pull the shaft completely out of the spline
Square then ends so they mirror each other
Reinsert shaft into spline
Put back together.

Is this the correct steps I should follow for my LWB GQ?

 

[simmoevo]

Question is how did it get out of phase? Did you have it out and pulled apart? They don't just go out, maybe a weight has broken off and put it out of balance which would require you to get it balanced.

 

[timmay556]

hey mate, I haven't touched it other then the flip I did because the fat end was hitting my cross member(which is when I noticed it) I'm guessing a prev owner has done it seeing as she's 20 years and 300kms old.

 

[simmoevo]

Sop it has always vibrated even before you flipped it?

 

[timmay556]

Yeah it did. It gets kind of a "hopping" up and down vibe at around 50kph in 4th gear (on 33"s)

When I did the tail shaft flip I unbolted and horizontally rotated the TS and then bolted it back up. But I noticed that the bolt pattern at each end looks like this

Excuse the chit paint drawing

 

[monkeycritter]

This is worthwhile watching to the end. I never knew...

https://www.facebook.com/photo.php?v=470937339716400

 

[Boundry Rider]

The universals should be in synch. If not the vibrations will only cause premature wear to other components. Take it to a driveline specialist, truck places are the best, and spend a little to save a lot more heartache later on. Re synch and balance.
If you've hit the crossmember already there is value getting it looked at anyhow. Check if there's any hammer marks on the yokes, this also makes vibration at higher speeds. Yokes, universals and flanges shouldn't ever be hit with a hammer, they're made of soft iron which will deform.
Cheers.