A/C Underbody Lines - Installation

INSTALLATION

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

CAUTION: Always use ND-11 Polyester (POE) oil from Mopar(R) in Hybrid Electric Vehicle (HEV) models. Never use Polyalkylene Glycol (PAG) oil in an HEV model. See Refrigerant Oil for more information.

CAUTION: Polyalkylene Glycol (PAG) oil can contaminate the refrigerant system of a Hybrid Electric Vehicle (HEV) and lead to A/C system damage and failure. If the refrigerant recovery/recycling and charging equipment was last used on a non-HEV model, flush the hoses of the equipment with a solvent approved by the equipment manufacturer before using the equipment on an HEV model, or use refrigerant recovery/recycling and charging equipment designated only for HEV models by your service facility. See the operating instructions supplied by the equipment manufacturer for proper use and care of the refrigerant recovery/recycling and charging equipment.

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 Refrigerant Oil Capacity .

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





1. Position the underbody line assembly underneath the vehicle body.
2. Carefully raise the hoist until the frame and body mounts line up together.
3. Install the five screws that secure the underbody lines (1) to the vehicle underbody (2).
4. Install all body mount bolts to the passenger side of the vehicle. Tighten all passenger and driver side mount bolts securely.
5. Raise the hoist and remove the jack stands from under the vehicle.





6. Connect the rear heater hoses (5) to the rear heater core tubes that extend through the rear floor panel (4) behind the right rear wheel housing and install the heater hose clamps.
7. Remove the tape or plugs from fittings on the rear suction line (2) and the rear liquid line (3) and the rear evaporator extension line tapping plate ports.
8. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the rear suction and liquid line fittings. Use only the specified O-rings as they are made of a special material for the R-134a refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
9. Connect the rear suction and liquid line fittings to the rear evaporator line tapping plate.
10. Install the nut (1) that secures the rear refrigerant lines to the rear evaporator line tapping plate. Tighten the nut to 23 Nm (17 ft. lbs.).





11. Connect the underbody heater hoses to the front heater hoses and install the heater hose clamps.
12. Remove the tape or plugs from the refrigerant line couplers (6) and the underbody refrigerant lines.
13. Lubricate a new rubber O-ring seal with clean refrigerant oil and install them onto the refrigerant line couplers. Use only the specified O-ring as it is 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.
14. Connect the underbody liquid and suction lines to the liquid line extension tube (8) and the suction line extension tube (5) Refrigerant Line Coupler - Installation.
15. Install the secondary retaining clips (2 and 7) onto the refrigerant line couplers.
16. Install passenger side tires Removal and Replacement.
17. Install the right front wheelhouse splash shield.
18. Lower the vehicle.

WARNING: Always follow vehicle service procedures to properly connect batteries on an HEV model. Serious or fatal injury may result from improper service procedures.

19. On HEV models, reconnect the battery system using the service disconnect at the battery pack .
20. On gasoline only models, reconnect the negative battery cable.
21. Fill the engine cooling system Service and Repair.
22. Evacuate the refrigerant system Refrigerant System Evacuate.
23. Adjust the refrigerant oil level Refrigerant Oil Capacity.
24. Charge the refrigerant system Refrigerant System Charge.