Grand Cherokee 4WD V8-5.7L (2008)
Hose/Line HVAC: Service and Repair
A/C Line - Installation
Discharge Line
5.7L/6.1L ENGINES
CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system See: Service and Repair/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 systemSee: Service and Repair/Refrigerant 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. RHD model similar.
1. Position the A/C discharge line (1) into the engine compartment.
2. Remove the tape or plugs from the opened discharge line fittings and the compressor and condenser ports.
3. Lubricate new dual-plane seals with clean refrigerant oil and install them onto the discharge line fittings. 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 discharge line onto the A/C compressor (4).
5. Install the nut (2) that secures the A/C discharge line to the A/C compressor. Tighten the nut to 20 Nm (15 ft. lbs.).
6. Install the A/C discharge line (5) into the retaining bracket (9) and to the A/C condenser (4).
7. Install the nut (6) that secures the A/C discharge line to the A/C condenser. Tighten the nut to 20 Nm (15 ft. lbs.).
8. If removed, install the A/C pressure transducer (7) onto the A/C discharge line. Tighten the A/C pressure transducer securely.
9. Connect the wire harness connector (8) to the A/C pressure transducer.
