Additional heater — disassembly and assembly

Disassembly

1. Remove the water jacket cover.



2. Remove the combustion chamber fan motor cover.



3. Disconnect the overtemperature sensor and temperature sensor from the water jacket.

• Discard O-rings of circular cross-section.

4. Remove the electronic control unit and blower motor cover.

• Disconnect the internal electrical connector.

5. Disconnect the cables from the auxiliary heater electrical connector (flame sensor shown removed for clarity).



6. Disconnect the glow plug wire from the glow plug.



7. Remove the glow plug.



8. Remove adapter.




9. Remove the flame sensor.



10. Remove the combustion chamber fan motor. Discard the gasket.



11. Remove the combustion chamber. Discard the gasket.



12. Using a suitable screwdriver, remove the heat exchanger.

• Discard the O-ring.

Assembly

1.

NOTE: Install new O-rings and gaskets.

NOTE: Immerse O-rings in coolant before installing.

Reinstall the elements in reverse order.