Heater Core: Service and Repair

Heat exchanger

Replacing the heat exchanger

General

Warning! Follow the safety instructions for work on the heating / ventilation system, see Refrigerant, safety regulations Refrigerant, Safety Regulations.

Note! Read the instructions about slow and large leaks, see Oil in the air conditioning (A/C) system Oil In The Air Conditioning (A/C) System.

Note! The O-rings must always be replaced when replacing the heat exchanger.

Removal




Remove the dashboard according to Dashboard Dashboard.
Remove the central unit according to Central electrical unit Central Electrical Unit.

Note! In event of leakage the O rings can be replaced without the heat exchanger being removed.

- Remove the support plate. Remove the tie straps and the pipes and replace the O rings
- Remove the mountings from the support plate
- Carefully lift the holder over the guide pins
- Withdraw the heat exchanger and pipes from the housing
- Remove the tie straps and pipes
- Replace the O-rings
- Check the seal.

Installing the heat exchanger
- Install in reverse order
- Replace the seal if necessary.

Note! Secure the support plate first and then the tie straps.