Train me to change gear (7)
I believe the answer is:
raiment
'gear' is the definition.
(I've seen this before)
'train me to change' is the wordplay.
'to change' is an anagram indicator.
'train'+'me'='trainme'
'trainme' with letters rearranged gives 'RAIMENT'.
(Other definitions for raiment that I've seen before include "these garments are old-fashioned" , "Tire man (anag.)" , "Apparel" , "Clothing (literary)" , "Am inert (anag) - clothing" .)