Re: Diplomat Dishwashers
assume you mean the air break nut on the Smeg made ones???
They can be tight and there was a tool, part number 971450207 but I am not sure it is available anymore. No one ever used it anyway, I always use the slotted screwdrver and hammer technique! Use it like a chisel to cut a groove in the nut and then tap it around a bit until its loose. Never broke one yet and get the old one back on carefully and the groove will be out of sight.