Aquabrass divertor question

[Skatergreg]

need ,to replace diverter cartridge but struggling to get at old one. I am afraid of stripping threads. There is very little to grip on and what grip I have is not moving at all any tips ? I thought maybe I could just pull out the cartridge but can’t move that either . Help ? Or next is calling in the pros

 

[Terry]

I would give this a day or two for someone to recognize this setup.
This is just a guess on my part.

 

[Sponsor]

 

[Neil Binda]

ABCA10064

 

[Skatergreg]

Yes. That is pretty much the same. I cannot loosen #6 the cartridge holder. Such a small area to get a bite with a wrench. I am afraid if too aggressive I will damage threads and dome cap will not thread on. Any suggestions would be appreciated.

 

[Neil Binda]

You should be able to put a wrench on there and loosen the nut .

Before more damage is done call a plumber