A/C Suction Line - Installation

5.7L/6.1L ENGINES

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

NOTE: LHD model shown in illustrations. RHD model similar.





1. Position the A/C suction line (3) into the engine compartment.
2. Remove the tape or plugs from the opened suction line fittings and the compressor and expansion valve ports.
3. Lubricate a new O-ring and a new dual-plane seal with clean refrigerant oil and install them onto the A/C suction line. Use only the specified 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. Install the A/C suction line onto the A/C compressor (4).
5. Install the nut (2) that secures the A/C suction line to the A/C compressor. Tighten the nut to 20 Nm (15 ft. lbs.).





6. Install the A/C suction line (2) into the retaining bracket (9) and to the A/C expansion valve (1).
7. Install the nut (3) that secures the A/C suction line to the A/C expansion valve. Tighten the nut to 20 Nm (15 ft. lbs.).
8. Install the air intake tube and the resonator Air Cleaner Body - Installation.
9. Reconnect the negative battery cable.
10. Evacuate the refrigerant system Refrigerant System Evacuate.
11. Adjust the refrigerant oil level Refrigerant Oil Level.
12. Charge the refrigerant system Refrigerant System Charge.