LINE-A/C DISCHARGE
DESCRIPTION
The A/C discharge line (1) is the refrigerant line that carries refrigerant from the A/C compressor to the A/C condenser. The A/C discharge line contains a fitting (2) for the A/C pressure transducer (3) and is secured to the A/C compressor and the A/C condenser by use metal fittings (4).
The A/C discharge line is sealed to the A/C compressor and to the A/C condenser by use of rubber O-ring seals (5) and metal gaskets (6). The O-ring seals used on the connections are made from a special type of rubber not affected by R-134a refrigerant.
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.
The A/C discharge line has no serviceable parts except the O-ring seals and gaskets. The O-ring seals used on the connections are made from a special type of rubber not affected by R-134a refrigerant. The O-ring seals and gaskets must be replaced whenever the A/C discharge line is removed.
The A/C discharge line cannot be repaired and must be replaced if found to be leaking or damaged.
REMOVAL
WARNING: Refer to the applicable warnings and cautions for this system before performing the following operation (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNING) and (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - CAUTION). Failure to follow the warnings and cautions could result in possible personal injury or death.
NOTE: 3.8L engine shown. 2.8L engine similar.
1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE - REFRIGERANT SYSTEM RECOVERY).
3. Disconnect the engine wire harness connector (4) from the A/C pressure transducer (5) located on the A/C discharge line (2) near the A/C compressor (6).
4. If required, remove the A/C pressure transducer from the A/C discharge line and remove and discard the O-ring seal.
5. On 2.8L diesel engines, disconnect the air intake hose from the throttle body and position the hose out of the way.
6. Remove the nuts (3) that secure the A/C discharge line to the A/C condenser (1) and A/C compressor.
7. Disconnect the A/C liquid line from the A/C condenser and A/C compressor and remove and discard the O-ring seals and gaskets.
8. Install plugs in, or tape over the opened discharge line fittings and condenser and compressor ports.
INSTALLATION
CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - 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 system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - 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: 3.8L engine shown. 2.8L engine similar.
1. Position the A/C discharge line (2) into the engine compartment.
2. Remove the tape or plugs from the discharge line fittings and the condenser and compressor ports.
3. Lubricate new rubber O-ring seals with clean refrigerant oil and install them and new gaskets onto the discharge line fittings. Use only the specified O-rings 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 discharge line to the A/C condenser (1) and A/C compressor (6).
5. Install the nuts (3) that secure the A/C discharge line to the A/C condenser and the A/C compressor. Tighten the nuts to 23 N·m (17 ft. lbs.).
6. On 2.8L diesel engines, reconnect the air intake hose to the throttle body.
7. If removed, install the A/C pressure transducer (5) onto the A/C discharge line using a new O-ring seal. Tighten the A/C pressure transducer securely.
8. Connect the wire harness connector (4) to the A/C pressure transducer.
9. Reconnect the negative battery cable.
10. Evacuate the refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE - REFRIGERANT SYSTEM EVACUATE).
11. Adjust the refrigerant oil level (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - REFRIGERANT OIL LEVEL).
12. Charge the refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE - REFRIGERANT SYSTEM CHARGE).