Well It's been a Looong time since I was in one but I know the axle pulls out.
Then remove bearings as I said and pull the drum.

Now if you took three screws out then yes that drum pulls off the hub,
But it's froze so you stand a chance of breaking it if you beat on it or try to pull
It off.
Tom

1951 GMC 650 Diesel
1958 GMC 550 Wrecker
1964 Chev C-80 427cid Tandem
1947 Dodge WDX Power Wagon
1977 Chev K-30 400 cid
1984 Chev K-30 Cummins 6BTA