The Bosch front-load washer uses locking screws to stabilize the drum during transport. When the unit is installed, the locking screws are removed and caps are placed in the holes. Before moving your washer from one home to another, it is necessary to reinstall the locking screws. If you do not know where your locking screws are, order them from Bosch or purchase them from an appliance repair facility. Installing locking screws for a Bosch front-load washer does require a helper to move the drum slightly while you install the screws.
Find the four caps covering the four locking holes on the back of the washer. There is an indentation on the back of the washer that indicates the approximate position of the tub. The covers are along the inside of the indentation.
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Pry the covers out of the holes with a flat-head screwdriver. Place the covers in a plastic bag for quick retrieval when reinstalling the Bosch front-load washer.
Turn the hex-head locking screws counterclockwise in the sleeve until the end of the screws are flush with the bottom of the sleeve. The locking screws thread into a sleeve that supports the screws when they are installed.
Open the washer door and ask a friend to push the drum against the back of the washer. Go to the back of washer and insert the locking screws into the four holes. The tabs on the sleeves fit into slots in the holes.
Thread the screws into the locking sleeves on the back of the drum by hand. You will feel when you are threading the screws. Once you have each of the screws started on the back of the drum, ask your helper to release the drum. Tighten the locking screws evenly with a socket wrench.