Removing High-Pressure Pump

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Highly inflammable or explosive materials

Danger of fire or explosion

→ Avoid contact with hot parts or sources of ignition.

→ Use suction to remove ignitable vapors.

→ Attach warning sign in a clearly visible position.

Information

Specifications for wrench sizes (a/f specifications) for screw heads are described as follows:

Torx screws: (E..) for external Torx, (T..) for internal Torx.
Hexagon-head bolts (internal and external hexagon): Wrench size (a/f)

Component overview:

Fig 1: Overview Of High-Pressure Pump Component

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

3-piston high-pressure pump
High-pressure line
Low-pressure line
Cover
Heat protection
External Torx screws (E10), M6 x 25
External Torx screw (E10), M6 x 40
External Torx screws (E10), M6 x 12

Disconnect supply hose for coolant pump.
1. 1.1. Open the spring band clamp -2- and pull off coolant hose -1- .
  
  Fig 2: Identifying Coolant Pump Coolant Feeder Hose
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove coolant pipe.
1. 2.1. Loosen external Torx screws (E10, M6 x 12) -1- and remove coolant pipe -2- .
2. 2.2. Replace O-rings.
  
  Fig 3: Identifying Coolant Pipe Mounting
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove heat protection panel for high-pressure pump.
1. 3.1. Disconnect cable plug for flow control valve -2- and unclip cable -1- .
2. 3.2. Unscrew three external Torx screws (E10, M6 x 12) -3- and remove heat protection panel -4- .
  
  Fig 4: Identifying High-Pressure Pump And Heat Protection Panel
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove cover for high-pressure pump.
1. 4.1. Unscrew external Torx screws (E10) M6 x 25 -1- and M6 x 40 -2- .
2. 4.2. Guide out cover for high-pressure pump.
  
  Fig 5: Identifying High-Pressure Pump With Cover
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Information
- If the union nuts on the fuel lines at the high-pressure pump cannot be screwed off by hand after loosening them, the relevant line must be replaced.
Remove fuel lines for high-pressure pump.
1. 5.1. Loosen union nut (a/f 14) -2- on fuel low-pressure line -1- and unscrew by hand.
2. 5.2. Loosen union nut (a/f 17) -4- on fuel high-pressure line -3- and unscrew by hand.
  
  Fig 6: Identifying Fuel Lines On High-Pressure Pump
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove high-pressure pump.
1. 6.1. Unscrew external Torx screws (E10, M6 x 25) -3- used to secure the high-pressure pump.
2. 6.2. Pull high-pressure pump out of the fitting bore.
3. 6.3. Replace O-ring.
  
  Fig 7: Identifying High-Pressure Pump With Cover
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Mark the position of the high driving journal on the frontal area -arrow- with a touch-up stick for refitting the high-pressure pump

Fig 8: Marking Rotor Position
Courtesy of PORSCHE CARS NORTH AMERICA, INC.