Discussion
The bottom roller has come off the track - me being an idiot didn't notice one of the screws into the sill plate had become a bit loose and was blocking the path so pulled harder - this is the result. (excuse the dust, it's the garden room threshold and I've been scarifying..)
Can I just prop the door up, unscrew the hinge, re-seat the bottom roller and screw back the hinge or is there more to it?
(also, anyone know why there are a combination of philips and allen key head bolts on the hinge?)

Can I just prop the door up, unscrew the hinge, re-seat the bottom roller and screw back the hinge or is there more to it?
(also, anyone know why there are a combination of philips and allen key head bolts on the hinge?)
Edited by ukwill on Tuesday 8th April 13:50
ukwill said:
also, anyone know why there are a combination of philips and allen key head bolts on the hinge?
www.reddit.com/r/DIYUK/comments/17ccg7s/bifold_doo..."I did this recently on some much larger doors. These look pretty similar.
There’s a sliding plate behind those hinges fastened with the grub screws as you say, but that cross head in the centre may be a self-tapping screw that goes all the way through into the frame and also need to be loosened on all three hinges
The trouble we had was for a 3mm adjustment, the self tapper always wanted to revert to the original hole. So ended up switching the self tapper with one of the other hex heads.
We used some good packing and a pallet pry to lift it:
https://www.wickes.co.uk/Roughneck®-Gorilla-S...
It’s a pain but quite straightforward."
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