FINOCJ previously posted:
"it did not originally come with locking hub and this is a retrofit?"
Correct.
The HP D30 is stock. The passenger side had a vacuum actuated axle shaft slip joint (about 1/2 way between the pumpkin and wheel) to disconnect the RF wheel. Engaged / connected, both wheels were hard connected to the axle. Disengaged, the spider assembly in the diff would spin but the front driveshaft would not.
What I have is aftermarket / retrofit. Axle shafts pulled out, wheel assembly changed for manual locking hubs. Passenger axle shaft is solid - no two piece with slip joint. Vacuum actuated assembly gutted.
This moved the cushy YJ "don't need to leave the cabin to run in 4x4 mode" back to the CJ world of "get out and lock the hubs".
These hubs, I think, are the same as were on my 79 CJ-5.