Can't Fit Gordon Replacement Motor into Gearbox

[BrokeTrainEnthusiast]

Hello,

I im attempting to repair my old Bachmann Gordon and am running into a problem. It appears that with the orange capacitor (at least I assume that it's a capacitor) on the side of my replacement motor, I cannot get the two halves of the gearbox and motor housing to close. I don't remember this capacitor on the old motor, but that was a long time ago. What is the correct way of putting my loco back together?

Thank you for your time,
Broke Train Enthusiast