Frequently I have a problem with self-assemble furniture not holding together as well as I would like. The bolts back out over time the legs in our kitchen chairs get wobbly. Or a bolt from an office chair falls out completely and something that used to work stops working. If I don’t notice the mystery bolt on the floor and the malfunction on the same day, I get other problems.
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Frequently the trucks (the wheel/coupler assembly that sits under train cars) come unattached. Lionel trains from the 1970s and first half of the 1980s are especially prone to this, though other makes of trains aren’t immune either. And sometimes you just want to change the trucks–some Lionel and Marx O27 cars are just the right size for American Flyer S scale, for example, only the trucks are the wrong gauge.
It’s tempting to try to just re-attach them with a nut and bolt, but as the train runs in circles around the track, the nut loosens and eventually works its way out.
The key is all in the type of nut you use.
Years ago, I tried to take apart my dad’s Lionel 2026 to fix it, and I gave up trying to figure it out. Today I scored a similar 2037 locomotive at an estate sale in fixer-upper condition. To my knowledge, no book has ever gone into detail on how to disassemble this model, so I’ll explain it here. This time I was able to drop the motor out to get at what I needed to repair it.
There are also five additional Lionel postwar-era locomotives, the 637, 2016, 2029, and 2036, that come apart the same way.
I’ve been noticing that a post I made several years ago about my experiments fixing a Marx 490 train locomotive has been getting a disconcerting number of hits. Disconcerting, because I repeated some advice on how to fix old Marx locomotives from another web site that I later found, by experience, wasn’t all that good.
Here’s how I go about doing simple repairs on Marx trains today, now that I’ve done a few.