Yes, in my OP I mentioned removing an e-clip, but your arrow shows exactly where I removed it from.
However, by fiddling around with the water on/off tap/valve I figured out that the plastic retaining ring is not a "retaining" ring. It just holds an o-ring and slides off. So simply breaking...
Hi,
Does anyone know how I remove the faceplate retaining ring on this type of concealed shower valve?
The plastic retaining ring has four vanes which are blocked by four vanes on the central boss, meaning I can only rotate it just under a 1/4 turn. I removed an e-clip from the splined shaft...