Delta Shower Cartridge Replacement Questions

[eR1c]

Hello there - I was wondering if I could get some assistance with my issue. I replaced my shower cartridge with the type in the image below. It's an exact replacement and it's all brand new. I followed the instructions and installed everything correctly, from what I can tell.

My issue is that now, either with the handle installed or if I remove the handle and grab the gold stem with a set of channel locks, the whole assembly turns 360 degrees in either direction. So, if I turn it clockwise from the off position, where no water is flowing, the water will turn on again. I thought the water should only turn on when you turn the assembly counter clockwise. When I install the handle, it does the same thing, except there is more resistance due, I assume, to the Alan bolt that is installed perpendicularly through the stem limiting the rotational temperature regulator's rotation. But again, it doesn't stop the cartridge from spinning clock-wise with it installed. It just creates more resistance.

Also, what is that Alan bolt that goes through the stem for? I can't for the life of me figure out it's purpose. I thought it was meant to prevent the stem from turning past the "off" position, however, that doesn't seem to be the case.

I'm sorry but I don't have much experience with plumbing. Thanks for any help you can offer.

 

[Tuttles Revenge]

The end of that torx/allen screw should extend to touch the plastic adjustable high temp limit stop and have an internal stop that is not adjustable at the off position.

 

[Sponsor]

 

[eR1c]

The end of that torx/allen screw should extend to touch the plastic adjustable high temp limit stop and have an internal stop that is not adjustable at the off position.

I see...okay thanks. So just unwind that bolt out a little more and the valve won't be able to turn past off?

 

[hj]

If that is the cartridge you installed why is it so corroded. And if not, and it works correctly, just adjust yours to match it.