Lucas horn diagram BSA-B18

[daveysprocket]

Hello, would anyone know of a schematic diagram for the Lucas 1140 horn?
I stripped mine some time ago to clean it, it did work (should've left it alone!). Now assembled the magnet functions but the plate that it should pull is rock solid. I think it should flex a bit but I can't work out how.
Comments appreciated.
Many thanks
Dave

[daveysprocket]

just a note that the horn is now working. it turned out to be a missing C-clip. A diagram would have shown it, in the end it took a fair bit of head scratching to nail it.
Cheers
Dave