Removing Upper Concave Washer

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WARNING: Grinding and welding work

Danger of fire or explosion

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

→ Cover highly inflammable or explosive areas.

→ Remove highly inflammable or explosive parts.

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.
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.
Drill off spotwelds -2- on the concave washer -1- .

Fig 3: Drilling Off Spotwelds On Concave Washer
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove concave washer.
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.