Re-installing Un -threaded screw

[Anonymous]

I have just run for the first time a Lionel Reading 4-6-2 (8004) circa 1989. Unfortunately, the connecting rod screw connected to the crosshead came off and I naturally thought it was screwed into the coupling that attaches to the siderod. There's no thread on the screw. Is it a press fit or does iot glue into the coupling hole? Help!

[lionelsoni]

The "screw" could be a rivet that didn't get spread. Why not take off the main rod and crosshead on the other side and see what's there?