Line-A/C Liquid: Installation

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

Fig 1: A/C Refrigerant Lines - Typical

Courtesy of DAIMLERCHRYSLER CORP.

Position the A/C liquid line (4) into the engine compartment.
Remove the tape or plugs from the liquid line fitting and the accumulator tube port.
Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the 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.
Connect the A/C liquid line to the outboard fitting of the accumulator tube (1).
Install the nut (2) that secures the A/C liquid to the accumulator tube. Tighten the nut to 20 N.m (180 in. lbs.).

Fig 2: A/C Condenser Refrigerant Lines - Typical
Courtesy of DAIMLERCHRYSLER CORP.
Remove the tape or plugs from the liquid line fitting and the condenser outlet port.
Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the 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.
Connect the A/C liquid line (2) to the A/C condenser (lower port) (1).
Install the nut that secures the A/C liquid line to the A/C condenser. Tighten the nut to 20 N.m (180 in. lbs.).
Evacuate the refrigerant system (Refer to REFRIGERANT SYSTEM EVACUATE) .
Charge the refrigerant system, (Refer to REFRIGERANT SYSTEM CHARGE) .