Water Leak

[No idea]

Hi, have a leak. I think I have found it but can't get to it.

its on its side and I have removed the base and the left hand side panel. Behind the side panel removed there is a large oblong of plastics, the height of the dishwasher and about half as wide , about 2-3cm deep. 

Its leaking at the bottom, behind the door Spring mechanism. Thisnisnwhat I can't remove to get to the leak.

any clues how to remove ? I can figure out the spring and string, and one end of the set up. But the bit by the door? Can't figure it out.

thanks