Tightening back nut

[solent ribman]

I've fitted a new mixer tap to the bathroom wash basin. I was maybe a bit too gentle tightening the back nut and now having plumbed it all, I find the mixer can turn. Didn't want to take apart again, so bought an adjustable basin wrench. whilst it reaches, because of the moulded recess underneath, there is not sufficient space for the spanner to locate. Any suggestions on how I might tighten it without having to `un-plumb'?

 

[ShaunCorbs]

spanner

 

[Fallon1982]

call in a plumber

 

[Unregistered]

That's not terribly helpful. I'm trying to save money, as had a difficult couple of years.

 

[joni os]

There are special box spanner sets for tightening nuts, try ebay or toolstation/screwfix

 

[Dotty]

Armeg drop jaw.

 

[buckley plumb]

Adjustable Basin Wrench - Toolstation

 

[ShaunCorbs]

Adjustable Basin Wrench - Toolstation

think he means like a kitchen tap maybe wrong tho

 

[thompsonbrown]

Always found a set of grips on the angle does the trick.

 

[joni os]

OP says its a mixer and is twisting so presumably mono bloc.

 

[lame plumber]

cheaper to call a plumber than buy a set of Armegs most decent plumbers carry an assortment of tools to do the job first time round, diy can work but often leads to these problems, sometimes just step back, know your limits and get the expert in. £40 spent on a plumber can end loads of heart ache, and you get them back if they cock up foc

 

[jtsplumbing]

Mono-block basin mixer ! need deep socket-extension bar and ratchet, cost you more to buy than calling someone out, and less chance of over tightening & cracking basin.

 

[wetdrip]

And if it's a plastic back nut change it to brass.

 

[Unregistered]

Thanks for everyone's input. The main problem is the moulded recess the nut sits in. This makes it difficult to get any kind of wrench onto the nut. I don't mind buying tools - might cost a bit more than a plumber, but I have the legacy of ownership in case I need it again. Yes, it is a monoblock design like a kitchen mixer. Luckily, it is also a brass nut.

 

[solent ribman]

Should have logged in before I posted above thread.

 

[Best]

Could you post a picture of the underneath of the basin showing the recess etc?
7" Footprint grips are a handy tool for awkward jobs. The type with knurled nut giving full adjustment are excellent

 

[buckley plumb]

http://cdn.toolstation.com/images/141020-UK/800/16973.jpg

 

[Best]

I thought the OP was talking about the single large nut type.
If it's the nut & bolt type, it's easy

 

[buckley plumb]

I thought the OP was talking about the single large nut type.
If it's the nut & bolt type, it's easy

I am not sure myself a pic would help .you could be right it could be a monoblock with the large back nut like a normal tap.

 

[buckley plumb]

http://cdn.toolstation.com/images/141020-UK/800/43610.jpg

if all else fails get some onto hold the tap and tighten nut with hammer and blunt chisel .