Martin,
I didn't want to damage anything, so I remove as much as I can from the outer tub, for removing it from the machine, and the bearing replacement procedure. I removed the cylinder from the spider to reduce the weight for re-installation of the spider into the outer tub. On some machines, especially Ipso WE series, you can actually damage the seal when reinserting the cylinder assembly into the outer tub, if that happens, be looking to tear the machine down and do the procedure all over again A LOT SOONER. In this case Martin since it's just rubber and not some porcelain/ceramic collar that sits on top of rubber + counter rings + more rubber, My guess either way works->just me being more careful. Putting the machine back together is quicker.
It's not perfect, BUT it's documented so that should some one stumble upon this site, with a roaring Neptune, they may be able to fix it. If you let a Neptune roar for too long, you'll have a lot more damage, such as warped shaft, or damaged outer tub or outer tub cover.