Has anyone done the rear upper control arms on a ucf20 before? How did you get the nut that holds the ball joint off? I've got mine mostly torn apart and can't get that nut off. Seems like the axle needs to come out?

No, I'm not replacing my RUCA because they went bad. I finally got SerialNine RUCA

Any tips would be appreciated. I'd like to get this done myself before I have to bring it to a friend's shop. I'm out of ideas!

 

You have to remove the Rear upper control arm attached to knuckle and then disconnect the ball joint from knuckle when it's off the car. The nut is not reusable per service manual.

 

on 1998-2000 it is this parts number, not sure about earlier years.

 

I forgot to mention that new rear UCA come with those new nuts!

 

Pretty sure you either need a special tool or you have to pull the driveshaft out of the knuckle, which means you have to disconnect the lower arms from the knuckle to get the driveshaft out. Once it's out, you can easy get at the nut on the RUBJ and then knock it out with a long punch/drift once the nut is off.