1998 Toyota Camry Timing Belt Replacement Procedure

Engine Mechanical problem
1998 Toyota Camry 4 cyl Front Wheel Drive Automatic

I need to know the procedure for changing the timing belt due to a repair shop didn't replace or damaged a seal or gasket during the replacement of my timing belt. Now the front of my engine is covered with oil and oil is leaking severly. I am a mechanic on construction equipment and over the road trucks. I would like to be able to print the procedure out. Thanks