Castaldi Polo bollard - Lamp and gear housing.

To get to the bollards lamp, it requires a hell of a lot of dismantling. First you have to screw in the two screws beneath the lens to release the lamp and gear housing from the bollard. Then you unscrew those screws you've just tightened up to remove them out the housing completely. Then you have to take the top cap off, and then you can pull the lens off the gear housing. Then above the louvres you have to unscrew two thumbscrews to release all the louvres, allowing you to finally replace the lamp.