Complex sentence: All he does all day is scavenge his family's fields for broken tractors or motors (or other mechanical devices of the sort) after finding these things, he dissasembles them, and brings them to town to sell and make a living.
Split into simpler sentences: All he does all day is scavenge his family's fields for broken tractors or motors (or other mechanical devices of the sort). After finding these things, he dissasembles them, and brings them to town to sell and make a living.