Evaporator Case: Service and Repair
EVAPORATOR CORE HOUSING REMOVAL / INSTALLATIONNOTE: The evaporator core is not separately serviceable, it is serviced only with the evaporator core housing assembly.
NOTE: If an evaporator core leak is suspected, the evaporator core must be leak tested before it is removed from the vehicle. See EVAPORATOR CORE INSPECTION.
NOTE: Replacement of the suction accumulator is not required when repairing the refrigerant system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.
1. Recover the refrigerant. See A/C REFRIGERANT SYSTEM TESTS.
2. Remove the suction accumulator. See A/C RECEIVER / DRIER REMOVAL / INSTALLATION.
3. Remove the A/C compressor.
4. Remove the engine oil indicator and tube. See OIL LEVEL INDICATOR AND TUBE REMOVAL / INSTALLATION.
5. Detach the speed control servo.
1. Disconnect the electrical connector.
2. Remove the bolt.
3. Detach the cable from the evaporator core housing and position aside the speed control servo.
6. Disconnect the blower motor and blower motor resistor electrical connectors.
7. Disconnect the heater hoses.
1. Using suitable tools, clamp-off the heater hoses.
2. Release the clamps and disconnect the heater hoses.
8. Detach the pin-type retainer and position aside the windshield washer hose
9. Disconnect the vacuum supply hose near the evaporator core housing
10. Disconnect the condenser to evaporator line spring lock coupling from the evaporator core inlet. See A/C SPRING LOCK COUPLING.
- Discard the O-ring seals.
NOTE: The following step is performed at the lower passenger side dash panel, inside the passenger compartment.
11. Disconnect the vacuum hose connector and remove the nut.
12. Remove the nuts and the evaporator core housing.
13. To install, reverse the removal procedure.
- Lubricate the refrigerant system with the correct amount of clean refrigerant oil. See A/C REFRIGERANT OIL ADDITION.
- Install new O-ring seals lubricated in clean refrigerant oil.
- Lubricate the coolant hoses with coolant hose lubricant or plain water only, if needed.