Discharge Line

REMOVAL

WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.

NOTE: The underbody refrigerant lines for the optional rear A/C system are serviced in five sections. Two sections are connected the A/C compressor. Two sections of the underbody suction line (low-side) are connected together by a tapping block with an O-ring seal. The underbody A/C discharge line uses a spring-lock type refrigerant line coupler with an O-ring seal.

1. Remove the cover from the rear A/C evaporator housing.
2. Recover the refrigerant from the rear refrigerant system.
3. Raise and support the vehicle.

Underbody Discharge Line:

4. Using the proper A/C line disconnect tool, disconnect the underbody discharge line spring-lock coupler from the compressor section of the underbody discharge line and remove and discard the O-ring seal.
5. Disconnect the underbody discharge line from the rear A/C discharge line and remove and discard the O-ring seal.
6. Install plug in, or tape over all of the opened discharge line fittings.
7. Disengage the fuel lines from the retaining clip located near the transmission and position the fuel lines out of the way.
8. Remove the screws and brackets that secure the discharge line to the underneath of the vehicle.
9. Support transmission with a suitable lifting device and remove the rear transmission crossmember.
10. Remove the underbody discharge line from the vehicle. Push the discharge line forward and over the transmission, then pull it rearward to remove.
11. If necessary, remove the bolt that secures the compressor section of the underbody discharge line to the A/C compressor and remove and discard the O-ring seal Make sure to plug in, or tape over the opened discharge line fitting and compressor port.

INSTALLATION
1. If the compressor section of the underbody discharge line was removed from the A/C compressor, remove plugs or tape from the discharge line fitting, lubricate a new rubber O-ring seal with clean refrigerant oil, install it onto the discharge line fitting and install the bolt that secures the discharge line to the compressor. Tighten the bolt to 21 N.m (15 ft lbs).
2. Position the underbody discharge line to the vehicle.
3. Install the brackets and screws that secure the underbody discharge line to the underneath of the vehicle. Tighten the screws to 8 N.m (70 in. lbs.).
4. Engage the fuel lines to the retaining clips located near the transmission.
5. Install the rear transmission crossmember.
6. Remove the plugs or tape from the discharge line fittings.
7. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the discharge line fittings.
8. Connect the underbody discharge line spring-lock coupler to the compressor section of the discharge line and install the secondary retaining clip (if equipped).
9. Connect the rear A/C discharge line to the underbody discharge line. Tighten the nut to 35 N.m (26 ft. lbs.).
10. Lower the vehicle.
11. Evacuate the rear refrigerant system.
12. Charge the rear refrigerant system.
13. Install the cover onto the rear A/C evaporator housing.