Commander 2WD V8-5.7L (2008)
NOTE: 4.7L engine shown. Other engines similar.
1. Remove the tape or plugs from the opened refrigerant line fittings and expansion valve and receiver/drier ports.
2. Position the A/C liquid line (1) into the engine compartment and install it to the front A/C expansion valve (2) and the receiver/drier (3) See: A/C
Line - Installation
3. Raise and support the vehicle.
4. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it onto the underbody liquid line fitting. 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.
5. Connect the liquid line extension tube (6) to the underbody liquid line (5) and install the nut (4). Tighten the nut to 20 Nm (15 ft. lbs.).
6. Lower the vehicle.
7. Reconnect the negative battery cable.
8. Evacuate the refrigerant system See: Service and Repair/Refrigerant System Evacuate.
9. Adjust the refrigerant oil level See: Service and Repair/Refrigerant Oil Level.
10. Charge the refrigerant system See: Service and Repair/Refrigerant System Charge.
Front Plumbing - 5.7L Engine
5.7L ENGINE
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.
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.
