Brake Lines, Attaching To Hydraulic Unit

To Hydraulic Unit: 

Fig 1: Brake Line Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Hydraulic Unit to Right Rear Brake Cylinder
   • Diameter 5.25 mm and tube fitting with shorter thread M12 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .
2. Hydraulic Unit to Left Front Brake Caliper
   • 5.25 mm diameter and tube fitting with thread M 10 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .
3. Hydraulic Unit to Right Front Brake Caliper
   • Diameter 5.25 mm and tube fitting with shorter thread M12 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .
4. Hydraulic Unit to Left Rear Brake Cylinder
   • 5.25 mm diameter and tube fitting with thread M 10 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .
5. Hydraulic Unit to Master Brake Cylinder Secondary Piston Circuit
   • Diameter 6 mm and tube fitting with thread M 12 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .
6. Hydraulic Unit to Master Brake Cylinder Primary Piston Circuit
   • Diameter 6 mm and tube fitting with thread M 12 x 1
   • Tightening specification. Refer to Overview - Control Module and Hydraulic Unit  .

On the Brake Master Cylinder: 

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Brake Booster and Brake Master Cylinder
2. Master Brake Cylinder Secondary Piston Circuit to Hydraulic Unit
   • Tightening specification. Refer to Overview - Brake Booster/Brake Master Cylinder
3. Master Brake Cylinder Primary Piston Circuit to Hydraulic Unit
   • Tightening specification. Refer to Overview - Brake Booster/Brake Master Cylinder