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450 problems

bought a used 450 and after clean up and lubing the shell plate does not stay above the primer cup and makes inserting a new shell hard if not pulling back on the handle. what should be holding the shell plate off the primer cup, the primer cup spring?

Are you attempting to slide a case into station 1 with a primer in the cup? If so, the primer will usually protrude a bit, interfering with this. When loading progressively, there is no primer in the cup when the case is slid into the shellplate.

no primer in the cup, the primer seater seems to be sticking up past the shell holder. the ram doesn't seem to be staying up far enough and trying to figure out what holds its up

There should be a set screw on the side of the primer arm that holds the primer seating punch in place. Try loosening it and pushing the punch down into the arm farther.

Often times the alignment of the primer feed system is out of wack and needs to be adjusted. Also, the allen head bolts that hold the primer feed system can be too tight especially the one towards the machine. Loosen that bolt up just a little and see if the primer cup works smoothly.

Use a pair of pliers or put the primer cup and and platform in a vice, loosen the set screw on the side of the slide bar aligned with the primer cup and apply pressure then retightening the set screw. This should reset spring pressure which will raise the shell plate platform, it also helps to completely take the primer cup apart and clean it before resetting spring pressure.

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