Installing Fuel Connection Line

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WARNING: Leaking fuel supply lines

Emerging fuel
Risk of fire

→ Perform leak test.

Tool recommendation :

Torque wrench, 3/8-inch
Short extension, 3/8-inch
Adapter Nr.98-1 Pos.2
Open-end/ring wrench insert Nr.196-1 , a/f 17

Fig 1: Identifying Fuel Connection Line Tool
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Information

Ensure everything is clean when working on the fuel system.
Even the smallest particles of dirt can cause problems and damage to the high-pressure system.

Remove stoppers from connection points.
Fit fuel connection line -6- .
1. 2.1. Lubricate all connection threads and cones with OKS 1700 (Part No. 000.043.207.36).
2. 2.2. Position fuel connection line.
3. 2.3. Tighten union nut (a/f 17) -1- by 2-3 turns with your hand.
4. 2.4. Tighten union nut (a/f 17) -2- by 2-3 turns with your hand.
5. 2.5. Tighten union nut (a/f 17) -3- by 2-3 turns with your hand.
  
  Fig 2: Identifying Fuel Connection Line
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fit clamps.
1. 3.1. Fit external Torx screw (E10, M6 x 12) -4- on the clamp.
2. 3.2. Fit external Torx screw (E10, M6 x 12) -5- on the clamp.
3. 3.3. Tighten the screws.
  → Tightening torque: 10 Nm (7.5 ftlb.)
Tighten union nuts on the fuel connection line.
1. 4.1. Tighten union nuts in the specified sequence -1 to 3- using the recommended tool.
  → Tightening torque: 20 Nm (15 ftlb.)
  1. Open-end/ring wrench insert Nr.196-1 , a/f 17
  2. Adapter Nr.98-1 Pos.2
  3. Torque wrench with short extension, 3/8-inch
    
    Fig 3: Tightening Union Nuts On Fuel Line
    Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  Information
  - Always perform a leak test in the high-pressure area after opening the fuel system.
  - This is particularly important if components are disassembled and replaced.
  - The threaded connections of the fuel lines must be coated with OKS 1710 lubricant (Part no. 000.043.303.27) before being screwed back on again.
  - Blow residual fuel out of the lines and high-pressure pump (into a fuel-resistant container or cloth) using compressed air before installation.
  - The tightening specifications must be strictly observed.
Leak-test the fuel system.
→ Checking Fuel Pressure .