Rear HVAC Housing Installation

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 .

NOTE: If the rear A/C evaporator is being replaced, add 30 milliliters (1 fluid ounce) of refrigerant oil to the refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

NOTE: Replacement of the refrigerant line O-ring seals is required anytime a refrigerant line is disconnected. Failure to replace the rubber O-ring seals may result in a refrigerant system leak.





1. Position the rear evaporator housing and retaining bracket (4) into the vehicle and install the retaining screws (5). Tighten the screws to 5 Nm (44 in. lbs.).
2. Connect the two condensate drain hoses (3) to the rear evaporator housing.
3. Remove the tape or plugs from the opened refrigerant line fittings and the rear expansion valve ports.
4. Lubricate new rubber O-ring seals with clean refrigerant oil and install them on the refrigerant line fittings. Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

CAUTION: Use care when installing the A/C lines to the A/C expansion valve. Carefully align the tube ends with the valve prior to tightening the A/C line retaining nut or damage to the sealing rings and tube ends may occur.

5. Connect the rear A/C liquid line (6) and A/C suction line (7) to the rear expansion valve and install the two retaining nuts (1). Tighten the nuts to 6 Nm (53 in. lbs.).




6. Connect the two wire harness connectors (1) located on the left side of the rear evaporator housing (2).
7. Install the rear roof ducts .
8. Install the rear A/C system covers and retaining screws. Tighten the screws to 2 Nm (17 in. lbs.).
9. Reconnect the negative battery cable.
10. Evacuate the rear refrigerant system .
11. If the rear A/C evaporator is being replaced, add 30 milliliters (1 fluid ounce) 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.
12. Charge the refrigerant system .