As you've already discovered, the Athearn BB units just pull straight up and the weight comes off. Sometimes they need persuasion.
I have a couple of Athearn RTR F7-A's that have a small machine screw that holds the weight in place.
Bill
I had tried that. After posting I took a pry bar (small screwdriver really) to it and it came right off
Thanks though.
Bapou wrote:How do I get the weight off of the frame to accsess the motor???
Gary