To replace the seals correctly yes you need to pull the carrier out. This sucks to do. One alternative option is these outter axle seals from Mad 4WD.

http://mad4wd.com/index.php?main_pag...roducts_id=485

They go in the outter end of the tubes and will stop *most* of the leaking as well as keep dirt and **** out of the tubes. **** pulling the carrier. We will be working on stuff at The Dexter Hizzy all weekend so you are welcome to work on your **** there. I have a hydraulic press which will make replacing the u-joint suck less.