I want to share some good fortune I had with my 12741 UP Intermodal Crane. As you know this is the 1989 edition and I just experienced a gear failure which I recall it rather common with this accessory.Specifically the shaft with the small and large gears will have a failure where one or both gears break or in my case the small gear became detached from the shaft.
I know a gentleman who is the perfect person for repairing these cranes. He is a retired engineer from Fisher Price and he has scratch built boats,locomotives (live steam) and clocks! He makes his own gears and his rigging expertise (boats) makes the rigging on the crane mere child's play. He lives in Orchard Park NY and I can't post his personal info here but if you have a intermodal crane in need of help,let me know and I will act as a go between.