Zd30 do water pump can't remove nuts

[Sj4800841]

Hi
Trying to replace water pump , but can't get 3 nuts off. Any tips on what tool to remove them or how to remove as not much room .

[Fireblade]

77176

in my experience take the fan off and should be straight forward after that
cant remember needing anything special. mine is a CRD but i think DI would be much the same in that area.