Using this detergent dispenser to tub fill hose is easy. First, make sure your washing machine is turned off and unplugged. Locate the old hose and carefully remove it. Then, connect the new hose firmly to the detergent dispenser and the tub fill area. Double - check all connections to ensure there are no leaks. As for maintenance, periodically check the hose for any signs of wear or damage, like cracks or holes. If you notice any issues, replace the hose promptly. And always remember, if you're not sure about the suitability of this part for your Bosch washing machine, contact us before making a purchase.