An automated side loading mechanism for a refuse collection body capable of lifting and emptying a refuse container equipped with a trunnion bar. A carriage reaches out from the side of the collection body and includes a lift mechanism. The lift mechanism includes pockets to receive opposing ends of the trunnion bar on the refuse container. Lock arms pivot downward so that bar members on the lock arms overlie top edges of the refuse container. The carriage is retracted and the lift mechanism is raised on the carriage so that the refuse container can be upended over the load opening of the collection body. The bars on the lock arms angle upwardly to allow plastic lids hinged to the refuse container to swing past the bars when the container is upended, while restraining the container from falling into the collection body.