Athearn Blue Box DD40 truck assembly

This is how to put the trucks back together especially if you have no diagram or picture and don't know what parts go where. The trucks are also protected against corrosion and tarnish. Gears are properly greased with red lithium brake grease. The Athearn Blue Box DD40 old school 4 axle truck can be tricky to put together, but remain calm and gently work through it. The trucks are now in excellent condition.