I assume you mean you got the snap ring out..
If so, the 1-2 accumulator piston cover has a rubber seal around it - this is good.
The bad part is that it may be difficult to remove because of it.
Try gently prying the inside of the cover with a screwdriver, or of you have a LARGE set of external snap ring pliers, you can just clamp the inside lips of the cover with the snap ring plier jaws and pull it out. It shouldn't be THAT tight, just a little snug because of the rubber surround. Don't damage the rubber part where it seals against the bore, you want that to be in good condition - and don't bend the cover.
Usually the 2 springs will push it out, but if you have a 3.8 engine, there is no upper spring, and it will not pop out on it's own. If the lower spring is broken, there may be shards of it jamming the cover and they may have deformed the cover - I've seen it happen. You should replace the cover if it is damaged too much - it's cheap insurance.