Evaporator Core: Service and Repair
EVAPORATOR - A/CREMOVAL
1. Remove the HVAC housing and place it on a workbench.
2. Disassemble the HVAC housing.
NOTE: Inspect the evaporator seal located in the upper half of the HVAC housing. If the seal is damaged or deformed, the seal must be replaced.
3. Carefully lift the A/C evaporator (1) out of the lower half of the HVAC housing (2).
NOTE: If the rubber flange around the evaporator tubes is deformed or damaged, the flange must be replaced.
4. If required, remove the rubber flange (3) from around the evaporator tubes (4).
INSTALLATION
CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system. Failure to properly adjust the refrigerant oil level will prevent the A/C system from operating as designed and can cause serious A/C compressor damage.
NOTE:
- When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system.
- If only the A/C evaporator is being replaced, add 60 milliliters (2 fluid ounces) of refrigerant oil to the refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
- Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is opened. Failure to replace the rubber O-ring seals and metal gaskets could result in a refrigerant system leak.
1. If removed, install the rubber flange (3) over the evaporator tubes (4).
NOTE: Make sure that the evaporator drain is clean and unrestricted and that the rubber seal and the rubber flange are properly positioned in the HVAC housings.
2. Carefully install the A/C evaporator (1) into the lower half of the HVAC housing (2).
3. Assemble the HVAC housing.
4. Install the HVAC housing.
5. If the A/C evaporator is being replaced, add 60 milliliters (2 fluid ounces) of refrigerant oil to the refrigerant system. When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.