Lionel 2328 horn pitch screw replacement

Does the horn function at all?  If not, it's probably bad...

This may help: 

https://ogrforum.com/...e-hood-beep-repaired

Mitch

I believe that screw is a 4-40, probably 1/4” or 3/8”.  You can find it in any hardware store.

The Lionel Postwar Service manual indicates a #4-36 thread, no length listed. This was noted in the section for the #2333 Diesel locos' horn sound adjustment.

I wish someone would make an electronic horn with the postwar sound.
Alan

If you have an Ace Hardware near you go to the hardware section where all the misc drawers are located. look for small set screws that have an allen wrench fitting. I have found many different set screws in those boxes. Bring your horn and a # 6 allen key with you if you have one to get the right size.

i have a horn unit apart on my table just now. i do have the correct screw for it, but i tried a 4-40 and it did not fit. It's a 4-36 thread. There are a few of these scattered across some postwar units.

If Lionel says its a 4-36 screw then it is.  As previously stated, Lionel has used these, and some accessory devices have a binding post that is a 4-36.  You can find the nuts for the binding posts, but the 4-36 machine screw  or a set screw can be a challenge (I don't know why).  The 4-40 screw is common and easy to come by, I would not recommend forcing a 4-40 screw in there.

As trains52 stated, you can try a Ace Hardware.  Not sure if you get to alot of train shows, but a good parts/screw guy may have it.  Not even Bolt Depot carries this 36 thread screw.

There is a good YouTube video on the horn repair, here is the link if you want to check it out:

https://www.youtube.com/watch?...K7rW6GkxA&t=488s