Installing Water Tube For Auxiliary Heating - Water Tube From Directional-Control Valve To Second Heat Exchanger

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.

Secure water tube on the directional-control valve at the top.
Information
- Before connecting the water hoses, apply suitable rubber lubricant to the flanges.
1. 1.1. Place water tube in installation position and slide onto the directional-control valve at the top -arrow A- .
2. 1.2. Slide spring band clamp onto the connection using the assembly pliers for spring band clamps, Cayenne hose connections Nr.72-1 (-arrow B-) and align with the markings.
3. 1.3. Slacken spring band clamp -arrows C- and secure the hoses.
  
  Fig 1: Securing Water Tube On Directional-Control Valve At Top
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Position heater on holder and screw down with the fastening screws -1- . → Tightening torque: 8 Nm (6 ftlb.)

Fig 2: Identifying Heater Fastening Screws
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Secure water tube at the heater.
Information
- Before connecting the water hoses, apply suitable rubber lubricant to the flanges.
1. 3.1. Place water tube in installation position and slide onto the heater -arrow A- .
2. 3.2. Slide spring band clamp onto the connection using the assembly pliers for spring band clamps, Cayenne hose connections Nr.72-1 (-arrow B-) and align with the markings.
3. 3.3. Slacken spring band clamp -arrows C- and secure the hose.
  
  Fig 3: Securing Water Tube At Heater
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Information

Make sure the water tube holder is installed at the correct position.

The exhaust pipe runs behind the water tube holder.
Install water tube holder.
1. 4.1. Position water tube holder -3- (-arrow-) .
2. 4.2. Tighten fastening screw -2- . → Tightening torque: 4.5 Nm (3.5 ftlb.)
3. 4.3. Tighten fastening nuts -1- . → Tightening torque: 6 Nm (4.5 ftlb.)
  
  Fig 4: Installing Water Tube Holder
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Position water tube on holder and secure with a blind rivet -1- (4.8 x 10).

Fig 5: Identifying Water Tube Installing Position
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Push water tube holder -1- onto the two water tubes and screw down using the fastening screw -2- . → Tightening torque: 3 Nm (2 ftlb.)

Fig 6: Identifying Water Tube Holder Fastening Screws
Courtesy of PORSCHE CARS NORTH AMERICA, INC.