I have been getting a looping harmonic noise from the front end of my [1991 4X4 pick-up with A.D.D. (5spd, 22RE)] for quite some time now. I realized that the passenger side front drive axle has lots of play where it bolts up to the front diff. This is not the side with the half shaft, its the side that the flange is flush with the diff. What I need is a diagram of the front diff to find out what parts to buy and/or if its a press bearing or if can be replaced like the carrier bearings in the rear (Caps). If anyone has a link to a good site, or has done this before and can walk me through it, it would be a big help. Thanks again for your ongoing help.
Jedrow

1991 Toyota pick-up 4X4
5spd, 22RE, Long-box.