Hi the VP37 injector pump on my Freelander 1 is leaking from the top cover. from the shape of the cover there is some sort of plunger in one corner. Can i remove the cover with the pump situated where it is or does it need to be taken off and why? If I take the top cover off will i find a pile of springs ball bearings etc flying in to the air? I would be very grateful if someone has any information on this.