Assemble, as equipment (3,2)
I believe the answer is:
rig up
'assemble as equipment' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rig up that I've seen before include "Assemble (something) in a makeshift way" , "Cobble together" , "Erect quickly and insubstantially" , "Construct in a makeshift way" , "Make temporary arrangement" .)