Generally all I do with washers and dryers is remove the wiring harness (insulated copper), and if it is not too difficult, the electric motor. Most everything after that is not really worth messing with. One thing to also watch out for is quite often in dryers you can find change in the bottom of the dryer. I have found as much as $17 and one heavy silver chain in one dryer. My last dryer I processed weekend before last gave up just short of $2 in change. Also watch out for brass fittings in gas dryers.