GDU pump test and case removal

@rjbender 

Do you know how I open up the oil pump? There's two hex screws which I've removed but then it isn't obvious what the next step is. It looks like there's a bit of a lip which looks like needs to be also prized open but then there's no slot as such. Bit puzzled as to what I need to do to open it up?! I've been told I should check it out to see the condition. 

@rjbender 

having just installed the GDU again today....yes it makes absolutely no sense to remove it from underneath. I installed it back in today with relative ease going in from the top with all the tail section removed, and As you point out...not having to remove the pump or anything. Lessons learnt!