Grand Cherokee 4WD V8-4.7L Flex Fuel (2009)
Hose/Line HVAC: Service and Repair
A/C Liquid Line - Installation
INSTALLATION
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 liquid line (1) into the engine compartment.
2. Remove the tape or plugs from the opened liquid and suction line fittings and the receiver/drier and expansion valve ports.
3. Lubricate a new O-ring seal with clean refrigerant oil and install it onto the rear liquid line fitting. Use only the specified O-ring seal 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.
4. Connect the A/C liquid line to the A/C expansion valve (2) and engage the two liquid line retainer clips (4) to the frame rail (3).
5. Lubricate a new dual-plane seal with clean refrigerant oil and install it onto the front liquid line fitting. Use only the specified seal 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.
6. Connect the A/C liquid line (2) to the A/C receiver/drier (3).
7. Install the nut (1) that secures the A/C liquid line to the A/C receiver/drier. Tighten the nut to 20 Nm (15 ft. lbs.).
