GB formulated on Wednesday :
On 28/12/2016 11:07, Peter Andrews wrote:
Do not attempt to unscrew the heater if the tank is empty it
will just buckle.


That's really my question. My concern is that, if it buckles and splits when
full of water, that's even more of a disaster!

It will not suddenly split, it will buckle first giving plenty of
warning. Try tapping spanner towards tighten and well as slacken.

Is this a soldered in lug or original fitment?