Need help with an Atlas GP two axle truck

[eja]

Can someone tell me how to disassemble an Atlas GP two axle truck?   I have one that is binding and needs cleaning (or something).  Pictures would be even better

Thanks
eja

added a title.  -gfh

[Bob Horn]

Hold side frames, push on wheel sets with thumb nail both sides, comes right apart. Bob.

[fredmoehrle]

I usually take some tweezers, push the retaining stubs forward while holding the side frames.  Downward pressure usually swings the front half down, and one can grab the pickup strips so they don't fly off.
Lift off the back end.

[eja]

....  push the retaining stubs forward while holding the side frames. 

that's the ticket...... thanks all