A/C Suction and Liquid Hose/Line Replacement
REMOVALWARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE FRONT BEFORE PERFORMING THE FOLLOWING OPERATION.
1. Recover the refrigerant from the refrigerant system. Refer to Refrigerant Recovery for the proper procedures.
2. Disconnect and isolate the battery negative cable.
3. If the vehicle is so equipped, relocate the vehicle speed control servo as necessary to access the accumulator. Refer to Vehicle Speed Control System for the proper procedures.
Fig.37 Suction And Liquid Line Assembly Remove/Install:
4. Remove the nut that secures the liquid line fitting (outboard fitting) to the mid-line connector block of the suction and liquid line assembly.
5. Disconnect the liquid line fitting from the midline connector block of the suction and liquid line assembly
6. Remove the rubber O-ring seal from the refrigerant line fitting of the liquid line and discard.
7. Install plugs in, or tape over the opened midline connector block liquid line port and the refrigerant line fitting of the liquid line.
8. Remove the nut that secures the suction line fitting to the mid-line connector block of the suction and liquid line assembly.
9. Disconnect the suction line fitting from the mid-line connector block of the suction and liquid line assembly
10. Remove the rubber O-ring seal from the refrigerant line fitting of the suction line and discard.
11. Install plugs in, or tape over the opened midline connector block suction line port and the refrigerant line fitting of the suction line.
12. Remove the two screws that secure the two refrigerant line fittings of the suction and liquid line assembly to the accumulator connector block inlet and outlet ports.
13. Disconnect the two refrigerant line fittings of the suction and liquid line assembly from the accumulator connector block inlet and outlet ports.
14. Remove the rubber O-ring seal from the refrigerant line fittings of the suction and liquid line assembly and discard.
15. Install plugs in, or tape over the opened accumulator connector block inlet and outlet ports and the refrigerant line fittings of the suction and liquid line assembly
16. Remove the two screws that secure the suction and liquid line assembly evaporator connector block to the evaporator.
17. Disconnect the suction and liquid line assembly evaporator connector block from the evaporator.
18. Remove the gasket from the suction and liquid line assembly evaporator connector block and discard.
19. Install plugs in, or tape over the opened suction and liquid line assembly evaporator connector block ports and the evaporator inlet and outlet ports.
20. Remove the suction and liquid line assembly from the engine compartment.
INSTALLATION
WARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE FRONT BEFORE PERFORMING THE FOLLOWING OPERATION.
1. Position the suction and liquid line assembly into the engine compartment.
2. Remove the tape or plugs from the suction and liquid line assembly evaporator connector block ports and the evaporator inlet and outlet ports.
3. Align the suction and liquid line assembly evaporator connector block and a new gasket to the evaporator inlet and outlet ports.
4. Install and tighten the two screws that secure the suction and liquid line assembly evaporator connector block to the evaporator. Tighten the upper screw to 11.3 Nm (100 in. lbs.) first, then tighten the lower screw.
5. Remove the tape or plugs from the accumulator connector block inlet and outlet ports and the refrigerant line fittings of the suction and liquid line assembly
6. Lubricate new rubber O-ring seals with clean refrigerant oil and install them on the refrigerant line fittings of the suction and liquid line assembly Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the compressor in the vehicle.
7. Reconnect the refrigerant line fittings of the suction and liquid line assembly to the accumulator connector block inlet and outlet ports.
8. Install and tighten the two screws that secure the two refrigerant line fittings of the suction and liquid line assembly to the accumulator connector block inlet and outlet ports. Tighten the screws to 2.3 Nm (20 in. lbs.).
9. Remove the tape or plugs from the mid-line connector block suction line port and the refrigerant line fitting of the suction line.
10. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the refrigerant line fitting of the suction line. Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the compressor in the vehicle.
11. Reconnect the suction line fitting to the midline connector block suction line port of the suction and liquid line assembly.
12. Install and tighten the nut that secures the suction line fitting to the mid-line connector block of the suction and liquid line assembly. Tighten the nut to 4.5 Nm (40 in. lbs.).
13. Remove the tape or plugs from the mid-line connector block liquid line port and the refrigerant line fitting of the liquid line.
14. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the refrigerant line fitting of the liquid line. Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the compressor in the vehicle.
15. Reconnect the liquid line fitting to the midline connector block liquid line port of the suction and liquid line assembly.
16. Install and tighten the nut that secures the liquid line fitting to the mid-line connector block of the suction and liquid line assembly. Tighten the nut to 4.5 Nm (40 in. lbs.).
17. If the vehicle is so equipped, reinstall the vehicle speed control servo. Refer to Vehicle Speed Control System for the proper procedures.
18. Reconnect the battery negative cable.
19. Evacuate the refrigerant system. Refer to Refrigerant System Evacuate for the proper procedures.
20. Charge the refrigerant system Refer to Refrigerant System Charge for the proper procedures.