Breaking up as a part needed for equipment (9)
I believe the answer is:
apparatus
'equipment' is the definition.
(apparatus is a kind of equipment)
'breaking up as a part needed' is the wordplay.
'breaking' indicates an anagram.
'needed' means one lot of letters go next to another.
'up'+'as'+'a'+'part'='upasapart'
'upasapart' is an anagram of 'APPARATUS'.
'for' acts as a link.
(Other definitions for apparatus that I've seen before include "Horse, maybe" , "system" , "political organisation" , "Technical kit" , "Technical equipment" .)