Grab the cap that's sticking out with the biggest pair of Vice Grips you can find and work it out. The arms of the cross are beefy enough that they stop the bearing cap from being pushed all the way through. I replaced all the U-Joints at once in my old Chevy, so I removed the drive shaft (two piece BTW). As I remember, the rearmost U-Joint was connected to the differential with straps, so it was just a matter of unbolting them and dropping the carrier bearing in the middle of the driveshaft.

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1984 300TD