Motor about to be put on ship's framework (7)
I believe the answer is:
carcass
'framework' is the definition.
(I've seen this before)
'motor about to be put on ship's' is the wordplay.
'motor' becomes 'car' (I've seen this before).
'about to' becomes 'ca' (I've seen this in other clues).
'be put on' means one lot of letters go next to another.
'ship' becomes 'ss'.
'car'+'ca'+'ss'='CARCASS'
(Other definitions for carcass that I've seen before include "Dead body of animal" , "Framework" , "Dead animal's body" .)