Making Ground Connection Using A Through Bolt

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Drill a hole. → Diameter: 4 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Drilling hole
Remove dirt and primer on both sides using an end brush end brush 9399/3 .

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Removing primer
Drill out the bore. → Diameter: 8 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Drilling out bore
De-burr the bore on both sides.
Fit countersunk screw through the bore and secure it with a hexagon nut.→ COUNTERSUNK SCREW 999.073.549.01 → HEXAGON NUT 900.377.003.01
Tighten threaded joint to the specified torque. → Tightening torque: 15 Nm (11 ftlb.)
Seal threaded joint.