It isnt the crush sleeve and if it was you couldnt do what your talkin about because you cant set preload with the carrier in. Check the gear oil. This will confirm the bearings condition (if they are very bad at least). And sorry but nope you cant replace the bearings with out having to set the gear back up b,c you have to remove the carrier which will mess the position because toyota uses adjusters not spacers.
and yes the replacement bearings would be identical but the crush sleeve would need to be replaced and set.
