Removing Bracket For Oil/Water Heat Exchanger

Information 

• The bracket for the oil/water heat exchanger must not be removed at an angle or levered off at one side. 
• The bracket's aluminum supports can break off in the crankcase. 

1. Remove the high-pressure connecting line.
   1. 1.1. Loosen holder for the high-pressure connecting line -1-  by unscrewing two external Torx screws (E10, M6 x 16) -2, 3-  .
   2. 1.2. Loosen and unscrew union nuts -4-  on the high-pressure connecting line -1-  at the fuel collection pipes.
   3. 1.3. Remove the high-pressure connecting line -1-  .
      Fig 1: Identifying High-Pressure Connecting Line

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Disconnect coolant hoses on the heat exchanger.
   1. 2.1. Clamp off coolant hoses using hose clamps.
   2. 2.2. Loosen spring band clamps -1-  .
   3. 2.3. Pull off coolant hoses -2-  and set them aside.
      Fig 2: Identifying Heat Exchanger Coolant Hoses

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Remove bracket for oil/water heat exchanger.
   1. 3.1. Loosen and unscrew six external Torx screws (E10, M6 x 45) -1-  and one external Torx screw (E10, M6 x 60) -2-  on the bracket for the oil/water heat exchanger.
   2. 3.2. Remove bracket for oil/water heat exchanger -3-  from the crankcase.
   3. 3.3. Collect any drops of fluid with a clean cloth and clean the sealing faces.
   4. 3.4. Close off the bores with suitable stoppers.
   Fig 3: Identifying Oil/Water Heat Exchanger Bracket

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Remove oil/water heat exchanger.

   Unscrew six internal Torx screws (T30, M6 x 20) and remove the heat exchanger.

5. Replace O-rings.

   Information 

   • When the work is complete, check that all aids and foreign objects (e.g. cloths, tools) are removed from the engine compartment. 
6. Make sure there are no tools, foreign objects or aids in the engine compartment.