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Liquid Line







5.9L/6.7L DIESEL ENGINES

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system 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 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: The A/C liquid line is serviced in two sections.

FRONT SECTION






1. Position the front section of the A/C liquid line (1) into the engine compartment.
2. Remove the tape or plugs from the opened ends of the A/C liquid lines and the condenser port.
3. Lubricate new O-ring seals with clean refrigerant oil and install them onto the front liquid line spring-lock coupler fitting. Use only the specified O-ring 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. Connect the front section of the A/C liquid line to the rear section of the liquid line (3) Installation .
5. Install the secondary retaining clip (2) onto the spring-lock coupler that secures the front section of the A/C liquid line onto the rear section of the liquid line.




6. Engage the A/C liquid line (1) into the three body retaining clips (2 and 3) located at the right front corner of the engine compartment.




7. Lubricate a new O-ring with clean refrigerant oil and install it and a new gasket onto the front 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.
8. Connect the front section of the A/C liquid line (2) to the condenser port.
9. Install the nut (1) that secures the A/C liquid line to the A/C condenser (3). Tighten the nut to 23 Nm (17 ft. lbs.).
10. Position the air seal over the right end of the A/C condenser and install the air seal retainers.
11. Install the passenger side battery tray Battery Tray - Installation .
12. Reconnect the negative battery cable(s).
13. Evacuate the refrigerant system Refrigerant System Evacuate .
14. Adjust the refrigerant oil level Refrigerant Oil Level .
15. Charge the refrigerant system Refrigerant System Charge .
REAR SECTION






16. Position the rear section of the A/C liquid line (2) into the engine compartment.
17. Remove the tape or plugs from the opened ends of the A/C liquid lines and the evaporator tube (4).
18. Lubricate new O-ring seals with clean refrigerant oil and install them onto the rear liquid line spring-lock coupler fitting. Use only the specified O-ring 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.
19. Connect the rear section of the A/C liquid line to the evaporator tube Installation .
20. Install the secondary retaining clip (3) onto the spring-lock coupler that secures the rear section of the A/C liquid line onto the evaporator tube.
21. Engage the A/C liquid line into the body retaining clip (5).
22. Lubricate new O-ring seals with clean refrigerant oil and install them onto the front liquid line spring-lock coupler fitting. 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.
23. Connect the rear section of the A/C liquid line (6) to the front section of the liquid line Installation .
24. Install the secondary retaining clip (1) onto the spring-lock coupler that secures the front section of the A/C liquid line to the rear section of the liquid line.
25. Install the passenger side battery tray Battery Tray - Installation .
26. Reconnect the negative battery cables.
27. Evacuate the refrigerant system Refrigerant System Evacuate .
28. Adjust the refrigerant oil level Refrigerant Oil Level .
29. Charge the refrigerant system Refrigerant System Charge .

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