quelquod wrote:
Our rear uPVC door has developed a problem in that the handle of the multipoint lock mechanism no longer springs back to its rest position after opening or locking the door. The mechanisms all operate OK but it seems as though a spring of some sort has failed perhaps. It’s an Everest door some 12 years old.
Are these mechanisms standard?
Could I replace a spring perhaps? Is fitting a new multipoint lock straightforward for a competent DIYer?
The handle-return mechanism is usually maintained by small spring-cassettes located in the handle itself, and can be replaced by anyone happy to take a look and who's confident with a screwdriver -
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Image source from URL at the end of this post)
Have a look at these two YouTube videos, and see if the spring-cassettes are the issue on your door -
https://www.youtube.com/watch?v=pSI6UMo47DYhttps://www.youtube.com/watch?v=smoTlywnd28When I replaced the last faulty one in our rear patio-door a few years ago, the springs themselves were fine, but the section of metal that the handle went through in the cassette had worn down quite badly and finally split, so do note that it might not be the springs themselves that are causing this issue, and keep a good eye on the state of the square metal section above them...
Replacement spring cassettes are cheaply available online -
https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=upvc+door+handle+spring+cassetteCheers,
Itsallaguess