Next were the crank pins were unscrewed to remove the rods. That's after I realised they were nuts rather than soldered washers when I tired to desolder one - ruining the wheel sadly. Good job I'd assumed they would all need to be replaced.
The wheels were fitted by cutting a slot across the end of the axle and then forcing a bit of wire into this and the face of the wheel in the manner of a woodruff key. This allowed the wheels to be pulled off whole and I suspect usable again.
Heat and brute force (gently hammering a screwdriver into the end of the axle) took the gear off which released the motor and gearbox.
Finally the odds and sods of wire came off. I've kept these for the minute but doubt they will be recycled.

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