Gang reuse broken lubricator (6,3)
I believe the answer is:
grease gun
'lubricator' is the definition.
'gang reuse broken' is the wordplay.
'broken' indicates anagramming the letters.
'gang'+'reuse'='gangreuse'
'gangreuse' with letters rearranged gives 'GREASE-GUN'.
(Other definitions for grease gun that I've seen before include "Lubricant applier" , "Lubricant applicator" , "Lubricating pump" , "Lubricating device" .)