Auxiliary Air Conditioning System

Removing and Installing Heat Exchanger







Removing Heat Exchanger
- Drain engine coolant.
- Remove the side lining at rear.







1. Press together the air duct from above and pull out of the air-conditioning unit-arrow-.







2. Unscrew the fastening screws -1- and tilt the auxiliary air-conditioning unit inwards on the top side.
3. Remove both servo motors for air flow.







4. Press together the spring-band clamps with the circlip pliers for spring band clamps, Cayenne hose connections 72-1 -A arrows- and pull off the coolant hoses from the heat exchanger -B arrows-.







5. Undo fastening screws -2- and open the upper housing section -arrow A-.
6. Pull out heat exchanger -arrow B-.

Installing Heat Exchanger

NOTE: Both foam seals position the evaporator under a slight pre-load in the housing. To ensure the correct pre-load, any damaged foam seal must be replaced.







1. Insert heat exchanger into housing -arrow A-.
2. Fold up upper housing section -arrow B- and screw down with the fastening screws -2-.







3. Push the coolant hoses onto the heat exchanger -arrow A- and attach with the spring-band clamps -B-.
4. Install both servo motors for air flow.







5. Tilt in the auxiliary air-conditioning unit on the top side -arrow- and screw down with the fastening screws -1-. Refer to tightening torques.







6. Push the air duct into the auxiliary air-conditioning unit -arrow- until the air duct is felt to engage.

- Mount the side lining at rear.

Tightening Torques