Front Truck has separated from the body of my 4-8-8-4 Rivarossi 4005

Hello…looking for any help to get the front truck re-attached back to the body of our black Rivarossi 4-8-8-4 #4005 (made in 1969 I think). I’ve gone through every Big Boy spec sheet from hoseeker.net trying to see how they re-connect the piece, but I am just at my wits end trying to figure what piece or pieces I really do need. This is the part that is loose and I do have all that is shown:

http://www.ebay.ca/itm/HO-RIVAROSSI-BIG-BOY-STEAM-LOCOMOTIVE-FRONT-DRIVE-CHASSIS-WHEELS-LINKAGE-/121393222255?pt=Model_RR_Trains&hash=item1c4399926f&_uhb=1

It’s the area of this piece near where the double loop is where that rod screw connects. Mine also has a ‘cover’ for this area of the truck where the rod screw also connects with. There was a micro tiny feeder screw within this assembly as well that appeared to catch whatever screw might have once come down into this assembly, but the instruction sheets seem to show no ideas as to what these extra parts hook on to. We purchased this engine about 3 years ago, and it was running in decent shape. With some TLC it appeared to run somewhat better but was slower than probably normal (which seemed normal once I realized how old the engine actually was). One day I noticedwhen I took the engine came off the track, once stopped, that the wheels seemed to droop much lower than normal. I knew there was an issue there and searched for any loose pieces that may have come off. Nothing ever found so I assumed something let go from inside the body of the engine. Nothing was ever found and so I have no idea how to re-attached it to get it running again. Any help would be GREATLY appreciated.

OK, so no one’s responded. I will take a crack at it, but haven’t pulled mine off the shelf to confirm.

  1. The rounded ball like object rides underneath the boiler and provides support as the truck swivels back and forth.

  2. The two ears at the back on the left and right side of the frame are for a pin that goes inside the boiler. They pivot on that pin and so the truck can go up and down. INside the boiler should be a mating structure with two ears that rotate side to side. Just put a screw and nylon locknut in there to hold it. I would add a piece of thermoplastic or metal tubing between the screw and ID of the 4 ear holes. Metal if this needs to be conducting electricity.

  3. The front of the truck should have a structure with cylinders for the steam power tubes to attach to from the boiler. There is one on each side from the boiler to the front of the truck cylinders.

I know this doesn’t count all things, but should get you started.

Richard