Removing Water Tubes For Auxiliary Heating - Water Tube From Second Heat Exchanger To Heater

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Water Tube Installation Position (Second Heat Exchanger To Heater)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Remove water tube holder.
1. 1.1. Screw off both fastening nuts -1- .
2. 1.2. Unscrew fastening screw -2- .
3. 1.3. Remove water tube holder -3- (-arrow-) .
  
  Fig 2: Removing Water Tube Holder
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen water tube at the circulating pump.
1. 2.1. Undo spring band clamp using assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 (-arrows A-) and push down off the connection -arrow B- .
2. 2.2. Pull water tube off the circulating pump -arrow C- .
  
  Fig 3: Loosening Circulating Pump Water Tube
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen water tube at the heater.
1. 3.1. Undo spring band clamp using assembly pliers for spring band clamps, Cayenne hose connections NR.72-1 (-arrows A-) and push down off the adapter -arrow B- .
2. 3.2. Pull water tube off heater -arrow C- and remove water tube.
  
  Fig 4: Loosening Heater Water Tube
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.