bogus wrote:
exactly. Put load on the yoke, and all bets are off.

It requires a small enough press anvil to poke it out without loading the yoke, and then using a large enough socket at the bottom to allow it to clear.

Do this hamfisted and you have messed up hardware.

Indexed means aligned, for the lack of a better term.

It means that the widget in question must be oriented in a specific direction or location, or else it won't work right. This can be applied to engines with real small quench areas, and the plugs have to be installed with the ground strap up, this means indexing the plug. Same with the drive shaft. If it isn't lined up to what it should be, where it was balanced with the rest of the drive line, then it would vibrate.

Which makes me wonder... how were these balanced? Were they balanced with the diff? Did this take out imbalance with the trans yoke? I guess the question is: How much of an assembly was balanced?

The driveshaft had to be indexed to the input shaft of the differential - this means if you didn't mark it, you had a 50/50 shot of getting it right! So I wonder... was the driveshaft originally match balanced with the diff, and then act of balancing the one fixed imbalance within the diffs rotating mass. If that is the case, any bets you need to get this rebalanced?

I would actually reach out to Bill Bidreau at www.ZFDoc.com, he may just have the answer to this question...