Cant get upvc window bead out

[norbellini]

i have spent 2 hours trying to get the window bead out to replase a failed unit. i have the new one ready to fit . the beads are on the outside . Should i remove the inside gaskets first before trying to remove the bead I have wedged in two metal scrapers but no luck . Is it possible to press the glazed unit from the inside would that make them pop out any help please
thanks

 

[steveuk]

yes remove the internal gaskets first, it will make like easier for you

 

[norbellini]

yes it worked got them out ok . Just one more point putting them back in . do i putthe bead in first with glass pushed back if i do they dont seem to sit secure until i push the glass forward towards the bead .Whats the plan of attack please is it gaskets first thanks

 

[steveuk]

beads in first like you say, then push the unit upto the beads then re insert the gasket, a lil washing up liquid might aid them going back in

 

[norbellini]

thank you how much tolerance can you get away with thickness wise the unit i hav had made is 2mm thinner than the original can that be "taken up with the gasket or the rubber water seal on the end of the bead. just a blip at the death thanks