C20 Rear Brake Job with Eaton HO52 axle?

[SprayPaint]

My ‘67 C20, as best as I can tell from other postings, has a HO52 Eaton 10-Bolt axle. I’ll try and post a picture of the pumpkin and drum.

My question is, how exactly do I tear this thing apart to do the rear brakes?

I have several manuals but none are very specific on how to start. Will the drum come off without opening the differential? I’ve done brake work before but never worked inside of a differential so the terminology is confusing.

If I do have to tear things down a bit, are there seals that would need replacing, and are they still available for this axle?

Thanks for any input!!!