A schematic is not necessary to reseal the dryer lint filter. RepairClinic.com and AppliancePartsPros.com provide detailed videos regarding how to disassemble the dryer and replace the lint filter seal on their YouTube channels
The part required to reseal the lint filter fits a variety of dryers, including Whirlpool, Maytag, Kenmore and Amana. The part number is 339956, which can also be purchased from Whirlpool directly or any company that carries this type of part. Although the schematic is not needed, websites that sell the replacement part generally provide a schematic of the Whirlpool dryer by entering the model or part number.