Brake shoes help (8 3/4 BBP)

The green bearings you have are sealed bearings. There's no separate rubber seal like the tapered bearings have. The only other "seal" should be a paper gasket behind the axle retainer plate, so just be careful removing that. But it's only a paper gasket anyway, is just slides over the bearings so if you do damage it you don't have to pull the bearings or anything to replace it.