well said janiVI.
i don't see why you'd want to take the whole thing out to clean it, unless you want to clean it from inside out..

there are two screws holding the gauge cluster pannel trim.
take the screws off and there are 4 clips that are holding the trim in place, so lower your steering wheel for more room to work with and just pull on it. it'll need some pulling. but becareful when you are doig this.

and there are 4 screws that are holding the actual gauge cluster down. two on top and bottom. after unscrewing the screws, tilt it from top, and unplug the harnesses, there are three of them. and then just carefully pull them out.

i found couple of pictures, here is a indepth view of it.




^that is called "System Name\Component : COMBINATION METER (FORD)"
yeah..our gauge clusters are made from Ford, like it or not.