I did a google search and found this discussion about the T.S.B. for the pickup's and 4runners from Yotatech.com-and I think Pirate4x4 had a discussion about it too. I think it's the same, number matches:
There is an updated roller bearing avail for this.

Toyota TSB DL94-001 issued in 94 (90-94 runners/trucks)

It is to reduce noise in the axle in "extreme cold" conditions, but I like the thought of a bearing over a brass bushing.

90364-30011 roller bearing (2 needed to do both sides)
90381-32001 thrust bushing (2 needed to do both sides)
bearing grease

Dealer may be able to print the directions for you. I could mail them, they won't "cut and paste" from my info source.
It seems Toyota used these parts a lot. The page is here: http://www.yotatech.com/f2/question-...earings-67673/