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OOPs. Thanks baxpoti. Would this be a difficult job to do. Looks like all that needs doing is to remove the 2 screws holding the pump and housing, then replace the O rings. Or would you suggest that i replace the full pump/housing (hopefully the 3 ) rings come with it -lol) Thanks for the...

Many thanks Chris. Found what i needed. 2 O rings (22mm x 3mm)

Thanks Agile.... Err. I think that i have positively identified the parts. Behind the pump body is leaking at the return pipe and manifold. I imagine that there are a couple of O rings that have perished. My question again for the less pedantic, is what size O rings do i need to purchase...

Hi All. Moved into our house over the summer. Just really started to use the combi and noticed low pressure so filled it via the filling loop. Then noticed its been leaking. Have taken the cover off to have a look (not touched anything gas related). I can see that its leaking behind the...