Air conditioning dryer Volvo Nr. 9187629

Hello in the round. In my V70 1 year 1998 the air conditioning dryer leaks, which is why the replenished air conditioning medium is back again. The leaky air conditioning dryer (Volvo part number 9187629) has to be separated from the lines with a special tool. Who can answer me seriously flying questions: 1. Which special tool is it exactly? 2. Is there a Volvo number for the tool? 3. Is there a “commercial” tool to buy with which the connection can be solved? Thank you in advance. Greeting operasa