Take on equipment (6)
I believe the answer is:
tackle
I believe this clue is a double definition.
'take on' is the first definition.
(I know that take on can be written as tackle)
'equipment' is the second definition.
(I know that tackle is a type of cogwheel)
(Other definitions for tackle that I've seen before include "Start dealing with the fishing equipment" , "Try to deal with something awkward - in rugby?" , "Compete for ball" , "Kit" , "Equipment; intercept" .)