Evaporator Core: Service and Repair

Evaporator

Removing

- When working on the refrigerant circuit, note the information, refer to => [ Refrigerant Circuit, Specialized Repairs ] Procedures.

- Remove the heater and A/C unit. Refer to => [ Heater and A/C Unit ] Removal and Replacement.

- Disassemble the heater and the A/C unit. For vehicles with Climatronic, refer to => [ Heater and A/C Unit Overview, Climatronic ] Heater and A/C Unit Overview, Climatronic. For vehicles with Climatic, refer to => [ Heater and A/C Unit Overview, Climatic ] Heater and A/C Unit Overview, Climatic.

- Disassemble the evaporator housing. Refer to => [ Evaporator Housing ] Overhaul.






- Remove the evaporator - A - from the evaporator housing lower section.

• Before inserting the evaporator, check condensation water drain and clean drain if necessary.

• Before inserting evaporator, clean evaporator housing and the evaporator, if necessary.

- When inserting evaporator - A - into lower section of evaporator housing, and when assembling both housing halves, make sure the seal - F - is not damaged.

- Check seal - F - (it must be glued all around) before inserting evaporator.






- Mount the bracket - C - and seal/insulation - B - on the evaporator connecting pipes - D - and - E -.

- Insert evaporator - A - into lower section of evaporator housing as shown in the illustration.

• After assembling both housing halves, check seal / insulation - B - for correct seating at pass-through for both refrigerant lines - D - and - E -.

• Check seating of bracket - C - on both refrigerant lines - D - and - E - for correct seating.

• If heat protection insulation - B - is missing or not installed correctly, it can cause reduced performance of the A/C system (change of adjusted control characteristics of expansion valve due to radiant heat).

Installing

- Install in reverse order of removal.