Replacement Hayward AXV518P Gear Box Assembly for the AquaBug, DiverDave, Wanda the Whale, and the Aquadroid Automatic Pool Cleaners. Usually, this gear box needs to be replaced if your cleaner is only going in one direction and the hose looks like a pretzel. Sometimes it becomes clogged with debris such as dog hair and just needs to be taken apart and cleaned. Make sure that your current gear box has a black top plate. If yours has a red top plate, it is not interchangeable with this one, check the related products below for the red version.