I think this 33 looks like the same product my dad bought inside a Network Southeast Lima 47 around 1989. It was known as an "Orbit Products Track Cleaning Unit" - if you do a google search for that along with "Lima" , it comes up with a few references. They came as complete retro-fitted locomotives with the original Lima cardboard/polystyrene box carved out a little bit to accommodate the track rubber on the base. They had a gold or yellow coloured Orbit label stuck on the end of the Lima box, to indicate they weren't a standard Lima loco.
It's always nice to see products trying to fix common problems, but tbh it wasn't a brilliant success on my dad's layout. The rubbing pads had no real margin for track height differences, so sometimes the loco would beach itself on the rubbing pads and sometimes it wouldn't touch the tracks at all. The pads also clipped the "nobbly bits" on Peco point switches in some scenarios.
Unfortunately it's buried in storage boxes at the moment, so I can't take any photos of it. One day I plan to remove the Orbit gubbins and convert the 47 to CD motor/DCC/Stay Alive operation, along with the other Lima locos I inherited.