A/C Suction Line - Installation

3.6L ENGINE

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system Service and Repair . 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, see the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system Service and Repair .

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.

NOTE: The A/C suction line and the A/C liquid line are serviced together as an assembly.





1. Position the A/C suction and liquid line assembly into the engine compartment.
2. Remove the tape or plugs from the opened refrigerant line fittings and the compressor, condenser and expansion valve ports.
3. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the refrigerant line fittings. Use only the specified O-ring seals 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.
4. Connect the A/C liquid line (3) and A/C suction line (4) to the A/C expansion valve (1) and install the retaining nut (2). Tighten the nut to 8 Nm (70 in. lbs.).





5. Install the intake manifold Intake Manifold - Installation.
6. Engage the refrigerant line bracket (2) onto the stud located on the cowl panel (4) and install the retaining nut (3). Tighten the nut securely.





7. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it and a new gasket onto the suction line fitting. Use only the specified O-ring seal 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.
8. Connect the A/C suction line (3) to the A/C compressor (1) and install the retaining nut (2). Tighten the nut to 23 Nm (17 ft. lbs.).





9. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it and a new gasket onto the liquid line fitting. Use only the specified O-ring seal 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.
10. Connect the A/C liquid line (1) to the condenser tapping block (3) and install the retaining nut (2). Tighten the nut to 23 Nm (17 ft. lbs.).





11. Engage the push-pin retainers (3 and 4) that secure the A/C liquid line (2) to the frame rail and the Powertrain Control Module (PCM) bracket.
12. Install the A/C pressure transducer onto the A/C liquid line and connect the wire harness connector A/C Pressure Transducer - Installation.
13. Install the coolant recovery container (1) Coolant Recovery Bottle - Installation.





14. Connect the wire harness connector (1) to the PCM (4) and engage the connector lock.
15. Engage the wire harness brackets (3) to the frame rail and to the stud on the A/C compressor (2).
16. Install the engine trim cover.
17. Reconnect the negative battery cable.
18. Evacuate the refrigerant system Refrigerant System Evacuate.
19. Adjust the refrigerant oil level Service and Repair.
20. Charge the refrigerant system Service and Repair.