Tub Filler Not Producing Hot Water F502-5-1
If your Tub filler is not producing hot enough water, here is an easy fix to try.
You will need to access #15 on the parts breakdown below and remove the temperature limiting ring. It is usually used to prevent super hot water from coming out. But the tub filler can operate without it in place, and often is used as a child safety/anti scalding feature
Pictures below show item #15 and which part is removable.
Here are pictures of the cartridge from 2 different angles, the red ring is what can be removed. (please note sometimes the cartridge can be blue and the removeable ring would be gray)
Simply use a flat screwdriver to remove the ring and replace within the unit.