960 Headlamp beam adjustment motor removal

Searched the forum but no posts on how to remove and replace the headlamp beam adjustment motor. Advice gratefully received.

I've had these apart (while on the car), you just pop the cover off. Just change the internals over. You may find that all yours needs is a clean on the contact disk inside it.

Pop the cover off? 

Do you mean the cover of the motor? Are there any screws holding? Does the motor and contact disk then just pull out?

It's self-explanatory when you take the cover off. The cover just unclips (I think 4 clips moulded into the plastic cover).