Has anyone a clue on how to dismantle this locking fuel cap supplied by Lancia (door key operated).
Thanks
Tim,
On the underside you'll see a gold coloured ring with notches. This ring turns to
lock/unlock, about 25/30 degrees I think, unremembered direction.
Beneath that is a sliding bar which interacts with the rotation of the key. This bar has a
tiny spring keeping it in the 'locked' position. Turning the key compresses this spring.
It is likely that the spring has broken or is gummed up with debris causing it to remain
in the unlocked central position.
The pics show (not necessarily in order!) the bar, the hole where the bar spring goes, the pin
at the end of the key barrel which moves the bar, and inside the central cap the 4 'dogs' that
interact with the bar.
There's also a wavey washer that sits on top of the sliding bar.
Quite a fiddly operation, the spring when good is likely to fly off into the adjacent postcode.
Yep, this one did.
Edited to add: there is probably a tiny lug that goes in the end of the spring, unrecalled detail.
