Help undoing a shower nut

[trevorbayliss]

I want to remove the brass nut so I can clean my shower cartridge. It’s a brid tan valve from 2011.

I’m using my big ratchet but the nut will not move. I don’t want to force it.

Could I use silicone spray to help it?

I tried putting some vinegar around the nut but no difference

 

[trevorbayliss]

Success, I got it off.

But now I can’t access the nut to get the cartridge out. Any ideas?

 

[oldbuffer]

1. Be VERY careful getting that cartridge out. Some of the Bristan ones are push fit cartridges, and if you turn the big nut at the front you'll strip the splines at the back (which you can't see) and need an entire replacement shower.
2. You need to know the precise make and model of the shower before turning. May be OK, may not.

 

[trevorbayliss]

Success again. Managed to get my van box of nuts to just catch the nut. Didn’t need to buy a long nut wrench around 22mm.

So it’s off and doesn’t look too bad.

Do I clean it with vinegar?

I will regressed the washers.

 

[trevorbayliss]

Valve out in sink