Tightening Sequence For Low-Pressure Fuel Lines

1. Fit union nut -1-  by hand.
   1. 1.1 Coat thread on union nuts with Microgleit DF 977S. Observe drying time of at least 5 minutes before fitting. 
2. Tighten screws -2-  .

   > Tightening torque 9 Nm (6.5 ftlb.) 

3. Union nut -1- 

   > Initial tightening 8 Nm (6 ftlb.) 

   > Final tightening + 50° 

Fig 1: Low-Pressure Fuel Line Screws Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Tightening sequence for low-pressure fuel line