Hi carlDlux:
I assume you mean getting access to the motor, not how to get to the bag chamber.
Start at the blower end, if it's a model G that would be the cord winder end. There are a series of screws, remove them, pop out the winder and there's the motor.
I'm into the history of Electrolux, but there are others here who are experts at repair, assembly and disassembly who can walk you through this step by step. I'm sure somebody will chime in later today.
To access the bag chamber, there is a button on top of the machine where the hose plugs in. Depress it and the cover pops open. Removing the bag chamber is not my thing, again there are experts who can tell you how to do that too.
Alex Taber.