Heater Core: Service and Repair

Replacing Heater Core

Remove microfilter housing.
Remove panel for instrument panel.


WARNING:
Danger of scalding!
Only perform this work after engine has cooled down.







Release hose clamps (1) and (2).
Detach water hoses.
Carefully blow through lines to remove remaining coolant from heating element.

Installation: Filling and bleeding the cooling system,







Withdraw temperature sensor (1). Unclip wiring harness (2).







Release screw (1) and remove bracket (2) from double pipe.
Unclip retainers (3) and lift off cover for heating element (4).

Installation Note: First insert lugs (5).







Remove retainers (1) and remove double pipe (2) towards top.
Raise heating element (3) at front and remove.

Installation: Replace seals.

Coat sealing rings with antiseize agent and ensure correct seating.