HVAC Housing - Installation

INSTALLATION

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system Refrigerant Oil Level . 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 systemRefrigerant Oil Level .

NOTE: If 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.

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 could result in a refrigerant system leak.





1. Position the HVAC housing (5) into the vehicle.
2. Install the one nut (2) that secures the HVAC housing to the dash panel (1) in the passenger compartment. Tighten the nut to 7 Nm (60 in. lbs.).
3. Connect the lower defroster duct (7) and the floor distribution duct (6) to the HVAC housing (5) Defroster Duct - Installation and Floor Distribution Duct - Installation.
4. Connect the evaporator drain tube (3) to the fitting (4) located on the dash panel.
5. Install the instrument panel Instrument Panel - Installation.





6. Install the two nuts (1) and one bolt (4) that secure the HVAC housing (3) to the dash panel (2) in the passenger compartment. Tighten the nuts and bolt 7 Nm (60 in. lbs.).
7. Connect the heater hoses to the heater core Heater Hose - Installation.
8. Connect the A/C suction and liquid lines to the A/C evaporator A/C Suction Line - Installation and A/C Liquid Line - Installation.





9. Position the air inlet plenum (1) into the engine compartment.
10. Install the four screws (2) that secure the air inlet plenum to the dash panel (3). Tighten the screws to 2 Nm (17 in. lbs.).
11. Reconnect the negative battery cable.
12. If the heater core is being replaced, flush the cooling system Service and Repair.
13. Refill the engine cooling system Service and Repair.
14. Evacuate the refrigerant system Refrigerant System Evacuate.
15. 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 Refrigerant Oil Level. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
16. Charge the refrigerant system Refrigerant System Charge.