The outer bearing is totally replaceable .
A d35 c-clip is easier than d44 as a large press is required to push new ones on.
On a D35 its been a while but you need to remove diff cover undo 12 pointed 1/2 "( could be 1/4" can't remeber) bolt that holds the diff pin ,slide that out push the axle shafts inward to release the c-clips then the shaft will pull out the bearing should still be in the housing .
Use a puller to remove the old bearing and seal replace with new one refit as reverse.
bearings from Lighthouse .
i would leave it till you need new shafts you could damage the casing .
