Structured Flow model SL110B single lever shower faucet. How can I get the cap off the stem to adjust the stop?

SOURCE: kohler bath/shower diverter stem stuck on shower

Probably has water deposit minerals build up on it. Push and or pull with pliers until freely moves,soak in Lime away solvent ,toothbrush on.

SOURCE: low flow hot water in Delta Shower

If your water heater is old or has been recently replaced, it will slough off debris that will get caught in the hot water supply side of the faucet. You have to disassimble the faucet and use a dental pic to remove the debris from it. This is a real common occurance. You can also try to flush out that side by removing the parts and then slowly turning on the water without the parts inside. Be careful not to flood your bathroom when you do this. But usually you have to dig it out. I have spent as high as 3 hours digging the liner from the dip tube of a water heater out of a faucet.

SOURCE: replace delta single handle shower cylinder

Yes, I believe this unit uses a cartridge right? They do fit a little tight due to the small washers on the back side of the cartridge. If this is the one I'm thinking of, there are two leg like appendenges that come off the back and fit into small holes at the back of the manifold or what some call mixing valve housing.

SOURCE: how to adjust anti scald valve on american standard shower faucet

Remove the handle,and all the trim rings,and the cartridge cover. take a flat head screwdriver and use it to lift
up the red ring behind everything, this is the hot limit safety stop,
this just stops the handle from turning to full hot.

Once you have the red ring lifted up, notice the numbers and the pointer
on the ring, numbers are on the fixture,

O= hottest 7=cold

See what the ring pointer is set to now, and move it half, before you put this back together, just set the handle on the unit and run the water to see if its to hot or not enough. Once you have found what is the best setting, then replace all covers and trim, handle.

Testimonial: "Thanks for the info! It turns out that our faucet was so old it had black plastic piece that had to be popped out and re-positioned!"

SOURCE: No hot water or pressure at shower head

Hello. No Poltergeist involved! These valves have an anti scald feature. I'm sorry but I'm not familiar with your particular handle type so I've included a link to Moens site. Click the link and look about 2/3 of the way down and find the downloads for your product. The information you need is on page 5 of the document.
builderdale