Argh, berlingo's. After changing cambelt on one, decided after an hour of trying to get one specifc bolt back to hold the cover on through the wheel arch with about 1mm clearance not to bother.
From thence forward van using water. Almost convinced myself new cambelt too tight, must be waterpump.
Oh no. Mr Citroen decided the one most difacult cam belt cover bolt would ALSO hold the water pump in.
So the water pump is secured in place by a long bolt that passes through a plastic cover first. Genius.