tap removal again!

[wildcard]

I"ve taken out the tails now so you can see.At the end of that long stud is a 5mm allan socket,happy days I thought.The stud will not budge.had grips on allen key,had a 5mm t bar on it.All you can hear is the metal grinding on the china as there is no rubber washer fitted.
They have the same taps fitted in another b/room so we had a go at them,same thing,won"t budge.
It" an ideal standard sink so I gave them a bell & without tap names they could"nt help.
Any ideas

 

[stussy]

Have you tried turning it the other way? Can you get an impact driver in there and stick an allen bit in and go steady?

 

[wildcard]

My mate suggested turning it the other way but i"m getting nervous as the metal is tight up on the china.

 

[plumben]

I Hate this style of tap bolt,
Get the customer to sign a disclaimer and try turning it the other way and see what happens

 

[jonnyswamp]

If I remember correctly they are left hand threads, or at least the ones I fitted were

EDIT
If there are any threads showing underneath, try an 8mm nut on it first (or whatever size it is) that will tell you what thread it is

 

[JCplumb]

I came across a tap with this type of fixing once, took me ages to get it off, ended up getting my grips on the bigger clamp part and twisting it off.
Once it was off I figured out how they work, the clamp part should pop off the threaded rod once loose, the rod only needs a couple of turns to loosen the fitting enough to get the clamp off.

 

[REDSAW]

looks like the brass nut and the tap body are acting like locking nuts pulling the metal clamp tighter!.
try tapping the brass up and turn a bit ,then repeat.

 

[gassafe]

Is there no access from the top of tap, it might secure from above the basin & undo in the same way?

 

[wildcard]

Thanks for all the replies,I"m going back thursday & check what threading it is.Hopefully get it sorted.

 

[wildcard]

Is there no access from the top of tap, it might secure from above the basin & undo in the same way?

No I checked,all needs to be done from underneath.

 

[jonnyswamp]

If there's no way of undoing the stud bar from the top (not under a cap etc) then I would assume the stud bar is anchored into tap base, but still able to turn
If this is the case, when you turn the stud clockwise it should loosen the nut and retaining bar

 

[gassafe]

thres a couple taps on eBay with that same fixing If you search ideal standard basin tap, looks just like a regular fixing, gonna have to try harder on that little Allen key screw!

 

[wildcard]

Sorted,they were l/h threads.

 

[REDSAW]

Sorted,they were l/h threads.

muppet

what idiot decided to put l/h thread on them!!