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Freight coupler self-centering issue combined with coupler angle

CoolHandCoolHandOGR Forum Member

I’m NOT picking on MTH, but why does this coupler have SO many parts? I have a pair of Premier boxcars with similar but not EXACT problems. The issue is definitely related to the self-centering feature of the coupler. It’s not centering. The real issue is that the coupler wants to angle upward (NOT DROOP). I’m a capable DIYer. I’ve been fixing/improving my trains for long enough to repair this issue without replacing the trucks.
I’d really like a diagram or exploded view of the assembly.
I bought these cars used like most of my collection. That’s why I know so much about fixing trains. I’m worried some BUBBA tampered with the coupler and put it together wrong. 8AA07957-199C-4C7D-8701-B75EEEF8F4D3Notice how the coupler on the brown car(20-93013) is higher than the coupler on the blue(20-93142)? It’s at a funny angle. Neither cars properly self center. Please, help. 

Original Post
CoolHandCoolHandOGR Forum Member

Ok, this is difficult to do without sounding dumb.

I fixed the issue. It was easy, as soon as I took everything apart and put it all back together. The screw on top of the coupler had worked loose. If it’s a little loose the coupler will stop self-centering one way. A little more loose and it stops centering altogether. If VERY loose the coupler begins to tilt. 
The loose screw comes from the train going through curves. The swing of the coupler CAN loosen the screw. 
After you remove the shell from the frame, remove the trucks. Tighten the screw on top of the coupler. Put it back together. 
I mentioned that these were used when I bought them and who knows how many curves they have been through. If this problem ever comes up again, I’ll use thread locker or nail polish to prevent the screw from turning on its own. 
Hope this helps somebody. If it ever helps someone, tell me so I don’t feel so dumb.
Thanks MTH, for making a good product. 

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