Willys 1948 4 wheel drive locking

[Willys1948]

My 1948 Willys drives great in 4wd going forward but in reverse, when backing up, the right front wheel pops and then locks up. Anyone have an idea what might be the issue; bearing broken, part installed incorrectly, something else?

Thx

[Old Man]

Likely front axle cv joint balls and socket wear or damage