Editing Clare-Pendar Series S840 (section)

==Disassembly==
The switch body comprises a shell and a lid. Four tabs, one per side, hold the lid in place. Each tab should be gently pried outwards using a sharp knife, releasing one side of the lid; as each tab is levered open, that side of the lid can be released.

It is possible to pull the slider out past the contacts, but afterwards they are likely not to close together (having being forced apart) and will need bending back to the correct angle. Trying to insert the slider past the contacts is likely to crushing them and should never be attempted. To insert the slider, first remove the contacts, by pushing carefully on the terminals and then pulling the contacts out using tweezers. Then, insert the slider (and the return spring if necessary), and push down hard on the slider so that it snaps back into the shell (this can require considerable force). Finally, slide each contact back down into the shell. The switch contacts look sturdy but, at least with the non-prism version, are are fairly delicate and can even snap when trying to restore their shape after damage has occurred.