fuel leak

hi guys asked for some advice on a diesel leak a few weeks ago (only leaks when cold its not the fbh) anyway i think i have found the leak i think its comeing from the injector pump its the black box thing behind the dip stick (03 td4)not sure if its one of the rubber pipes or are there seals in the pump its self if thats the case is it a garage only job the seals i meen or is it a new pump cheers