Manual Transmission

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

Tools







Technical values







Preliminary work
1. Remove complete heater.
2. Remove intake muffler with intake manifold.

Removing water tube for auxiliary heating - water tube from directional-control valve to second heat exchanger












1. Unscrew fastening screw -2- and remove water tube holder -1-.







2. Drill out blind rivet -1- at the water tube.
3. Remove water tube holder.
3.1. Screw off both fastening nuts -1-.
3.2. Unscrew fastening screw -2-.







3.3. Remove water tube holder -3- (-arrow-).

4. Loosen water tube at the heater.
4.1. 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-.







4.2. Pull water tube down at the heater -arrow C- and remove water tube.







5. Unscrew fastening screws -1- on the heater.
6. Loosen water tube on directional-control valve at the top.
6.1. 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-.







6.2. Pull water tube off the directional-control valve -arrow C- and remove it.

Installing water tube for auxiliary heating - water tube from directional-control valve to second heat exchanger
1. 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. Place water tube in installation position and slide onto the directional-control valve at the top -arrow A-.
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.







1.3. Slacken spring band clamp -arrows C- and secure the hoses.







2. Position heater on holder and secure with the fastening screws -1-. - Tightening torque: 8 Nm (6 ft-lb.)
3. Secure water tube at the heater.

INFORMATION: Before connecting the water hoses, apply suitable rubber lubricant to the flanges.

3.1. Place water tube in installation position and slide it onto the heater -arrow A-.
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. Slacken spring band clamp -arrows C- and secure the hose.

INFORMATION:
Make sure the water tube holder is installed at the correct position.
The exhaust pipe runs behind the water tube holder.

4. Install water tube holder.
4.1. Position water tube holder -3- (-arrow-).
4.2. Tighten fastening screw -2-. - Tightening torque: 4.5 Nm (3.5 ft-lb.)







4.3. Tighten fastening nuts -1-. - Tightening torque: 6 Nm (4.5 ft-lb.)







5. Position water tube on holder and secure with a blind rivet -1- (4.8 x 10).







6. Push water tube holder -1- onto the two water tubes and screw down using the fastening screw -2-. - Tightening torque: 3 Nm (2 ft-lb.)

Subsequent work
1. Install intake muffler with intake manifold.
2. Install complete heater.