Ancient 'Tower' TVR cap?

[Mr chapman]

Hi ,
Can anyone tell me how to remove a 'Tower' TVR cap? the radiator is cold whilst the rest of the house is fine so I need to check the pin underneath is not jammed.
I tried to remove it earlier and a couple of the black clips came off!!
Is this good /bad? I have photos if needed.
Thanks

 

[tamz]

The head just unscrews

 

[Duran]

Here's an [DLMURL="http://www.tfc-group.co.uk/assets/graphics/static/TRV%20Spec.pdf"]illustration[/DLMURL] that might help with where to detach.

~ Post 2 of 75 useful (?) posts ~

 

[Jules]

Turn it to no. 5, then unscrew the chrome ring underneath and top half will then lift off.

 

[Mr chapman]

Perfect. Many thanks Jules, worked a treat.