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Shower Valve Handle set screw jammed

2082 Views 7 Replies 3 Participants Last post by  SHEPLMBR
Hope you all can give me some insight. Tennant called and said the handle from her shower keeps falling off (I just purchased the property this summer). Taking a quick look the other day while I was out there I see there is a set screw on the inside of the handle that appears to tighten against a valve stem extension... however I'm just guessing. I know there is a set screw on the outside of the handle and one inside. Here are my questions:

1) Does anyone know what kind of valve this is? It's old and heavy. I don't see any manufacturer.
2) Do you think that set screw on the outside of the handle separates the handle in two pieces so you can reach the inner set screw?
3) If the design is how I'm thinking, I suspect that valve stem extension is probably corroded into the handle. I can probably get it out, but how would I affix it to the existing valve stem mounted to the fixture?
4) Lastly, do I have this all wrong?

I appreciate any insight. Thank you!


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Thanks both of you. Yes I was thinking about the penetrating oil, but didn't want to bug the tennant without a solid plan. So, the set screw inside that handle releases a small hub that attaches to the valve stem? How does that hub attach? I see a ridged area for grip, but I see no way the handle won't pull back off. Is that hub just too deep in the handle and that set screw should be hitting the shoulder of the valve stem (towards the wall past the ridged section)?
your bottom picture appears to have a wear ring near the end, that is where the inner set screw has been seated, and is now loose.

That makes sense to me. That inner set screw is a PITA to get to. Does that outer set screw take apart the handle so I can get to the inner one?
Thanks again
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