A/C Evaporator Core

NOTE: Replacement of the suction accumulator/drier is not required when repairing the air conditioning system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator/drier.

NOTE: Before an A/C evaporator core is replaced, it must be leak-tested in the vehicle to verify that it is leaking. Refer to Section 12-00 for A/C Evaporator Core On-Vehicle Leak-Test procedures. If it is necessary to replace an evaporator core, the new core is serviced with a service replacement A/C evaporator housing (19850) which has the new core. It will be necessary to transfer all vacuum control motors (18A318), heater core (18476), A/C vacuum reservoir tank and bracket (19A566), heater blower motor switch resistor (18591), blower motor (18527), vacuum lines and air ducts from the old A/C evaporator housing to the service replacement A/C evaporator housing.

Removal

1. Remove A/C evaporator housing. For additional information, refer to the procedure in this section.

2. Remove heater core from A/C evaporator housing. For additional information, refer to the procedure in this section.

3. Remove A/C recirculating air duct. For additional information, refer to the procedure in this section.

4. Remove A/C vacuum reservoir tank and bracket. For additional information, refer to the procedure in this section.

5. Remove vacuum hose harness (19C827) from its attachment points on the A/C evaporator housing.

6. Remove heater air damper door vacuum control motor. For additional information, refer to the procedure in this section.

7. Remove heater blower motor switch resistor. For additional information, refer to the procedure in this section.

8. Remove blower motor. For additional information, refer to the procedure in this section.

9. Remove heater outlet floor duct (18C433). For additional information, refer to the procedure in this section.

10. Remove one screw retaining A/C evaporator case support bracket (19A639) to A/C evaporator housing and remove A/C evaporator case support bracket. Tighten screw to 4.5-6.3 Nm (40-55 lb-in) during installation.

11. Remove one screw retaining A/C evaporator case mounting bracket (19A865) to A/C evaporator housing and remove A/C evaporator case mounting bracket. Tighten screw to 4.5-6.3 Nm (40-55 lb-in) during installation.

12. Remove A/C evaporator drain tube seal (19B739) from A/C evaporator housing.

Installation

1. Follow removal procedure in reverse order.
   
   A/C Evaporator Housing
   
   
   
   
   
   

   Item	Part Number	Description
   1	19850	A/C Evaporator Housing
   2	18476	Heater Core
   3	18B300	Heater Core Cover
   4	18529	Heater Dash Panel Seal
   5	19B739	A/C Evaporator Drain Tube Seal
   6	19A865	A/C Evaporator Case Mounting Bracket
   7	—	A/C Recirculating Air Duct
   8	19A639	A/C Evaporator Case Support Bracket
   9	19A566	A/C Vacuum Reservoir Tank and Bracket
   10	18527	Blower Motor
   11	18591	Heater Blower Motor Switch Resistor
   12	18C433	Heater Outlet Floor Duct
   13	19C827	Vacuum Hose Harness
   14	18A318	Vacuum Control Motor