Technical Oldsmobile rear axle seal

1948 oldsmobile rear axle removal , is it just the 4 bolts on outside flange is all I need to do ?

 

Photos always welcome.

 

These bolts

 

Yes.

 

Reverse drum and install it with 3 lug nut and use it as a slide hammer to remove the axle.

 

Thanks to all

 

Ok seal is out where do I buy one from