Please help identify my locomotive’s trucks

What you are looking for is the 8263-100 Plastic Motor Truck Frame.

That motor truck was introduced on the 8263 Santa Fe GP7 and parts dealers sell  the truck and its parts in many different stages of completion from the frame, partial to complete dummy trucks, and partial & complete powered trucks with the 8263 prefix.

It looks like you need the truck frame, part #600-8263-100 available here.

See page 8 (document page is S20:1-3) for the parts breakdown of the truck.

Larry

Thanks guys for the info!  I’ve already managed to find everything I’ll need for the repair.  

I do have one question, if I may.  I realized late last night that my O27 Alco AA has identical trucks, and the dummy A unit has all the gear mounting provisions that the motorized units do. Are these acceptable to build up as motor units, and make my already broken motor units dummy trucks?  Also, is it advisable to get the PW 600-111 metal drive gears instead of the 8010-116 nylon ones?

Below is pictured top to bottom the dummy Alco A, the GP9, and the powered Alco A. They seem to be the same 8263-100’s to me...

thanks guys!

You can use the dummy truck frame, they are both the same.

To use the 600-111 gear you have to drill out the center hole a little bigger ( 0.128 ) because it was made to be pressed on the shaft.

you can definitely swap out the trucks. I have taken several dummy units and powered them by simply purchasing all the necessary parts to make my dummy units powered.