ive now blown 2 rear diffs in about 2 weeks. this is right after my tranny and tcase swap. first diff a tooth off the ring chipped and somehow made the pinion grind on the carriring case. the second i had laying around and was welded. i went wheeling yesterday and i think a weld broke, but it broke through my axle.. now im on the search for a new set of 3rds. what cold be causing this? or is it just a coincidence?

 

When a weld breaks on a Lincoln locked diff, all kinds of bad things happen.

My vote, coincidence. Or the housing wasn't completely cleaned out when you swapped the broken toothed 3rd for the "new" one.

 

i cleaned it out pretty well, im think coincidence as well.. i should be able to weld up the hole in axle and get some 5:29's!!

 

I think it's the operator

:wabbit2:

 

haha probably, i tend to beat on my runner... but i think i have the only front wheel drive 4runner right now

 

Is your pinion angle raised up from stock from a lift?, If so try parking it on a hill to point the snout down and add more oil to the housing. If you just fill to the filler hole w a raised pinion on level ground the pinion bearings can get less lube and fail alot sooner than normal.