Sodbuster is correct,
you dont have to put a new crush sleeve in to get the Preload reset, to do that you'll have to pull the entire assembly apart,press off bearings on the pinion & repress back on.
once new seal is in, < if you have air tools> hold yoke in one hand, tighten the yoke up till it feels tight then back off a little.
if no air tools, tighten the pinion like Sodbuster mentioned & you should be good to go.
when i do them, usually i'll go1 flat on the nut further once the all the side to side movement is out.
no special tools require to get old seal out.. just a screwdriver & a hammer.. altho a seal pull makes it easier, old school ways never fails