Removing Upper Concave Washer

→ Avoid working in an area with highly inflammable or explosive materials.

→ Cover highly inflammable or explosive areas.

→ Remove highly inflammable or explosive parts.

1. Cover the fuel tank with fire-proof covers.
   Fig 1: Covering Fuel Tank

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   The markings are absolutely essential for positioning the new concave washer

   • Engrave markings with a scriber using sufficient force. 
   • When sanding down the connection area, make sure not to sand off the markings. 
2. Apply markings.
   1. 2.1. Mark the installation position of the old concave washer using a scriber.
      Fig 2: Marking Installation Position Of Old Concave Washer

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Drill off spotwelds -2-  on the concave washer -1-  .
   Fig 3: Drilling Off Spotwelds On Concave Washer

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Remove concave washer.
5. Prepare contact surfaces for installing the concave washer.
   Fig 4: Preparing Contact Surfaces For Installation

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   1. 5.1. Sand off adhesive residue.
   2. 5.2. Clean contact surface with acetone.