M57D30 single turbo replacement

[fossickerphil]

Hi guys, I am new here but would like advice on replacing the turbo on the E70. I have found the air cleaner housing is part of cam cover. I didn’t want to disturb if possible. Do I need to remove exhaust manifold. I have undone the clamp from turbo to manifold and clamp to exhaust. There is one bolt I cannot see never mind get a spanned on. The turbo bracket to engine block rear bolt. Any ideas please. I have undone oil feed banjo and drain pipe so just this one bolt left holding it on I think. Any links, pictures and advice will be much appreciated