Housing Assembly HVAC: Service and Repair

1. Discharge the air conditioning system. (Slowly to prevent loss of compressor oil)
2. Disconnect the inlet (suction) hose.
3. Disconnect the receiver-drier to evaporator hoses.
4. Remove the hose clamps and dash grommet retaining screws.
5. Remove the evaporator housing attaching screws and mounting bracket screw.

Evaporator Housing Components:

6. Lower the evaporator housing and pull the hoses and hose grommet through the dash opening. The blower motor, blower motor housing, evaporator core, control switches and expansion valve can all be serviced after removing the evaporator housing.
7. Reverse procedure to install, noting the following:
a. Add one ounce of refrigerant oil to the system when replacing the evaporator.
b. Expansion valve capillary tube is reinstalled at the same location on the suction line as removed.
b. Wrap the expansion valve and line with insulation.
8. Evacuate, charge and leak test the system.