Hose/Line HVAC: Service and Repair

REFRIGERANT LINE REMOVAL/INSTALLATION

1. Disconnect the negative battery cable.

2. Discharge the refrigerant from the system. Refrigerant Recovery Refrigerant Charging

3. Disconnect the ground cable installed to No.3 engine mount rubber.






4. Disconnect the insulator. Removal and Replacement

5. Disconnect the refrigerant pressure sensor connector.

6. Remove in the order indicated in the table. Do not allow compressor oil to spill.

CAUTION:
- If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug all open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.

7. Install in the reverse order of removal.

8. Perform the refrigerant system performance test. Refrigerant System Performance Test









Refrigerant Line Removal Note

Spring-lock coupling type

1. Set the SST.






2. While looking through the inspection hole of the SST, insert the protruding part of the SST until it makes contact with the cage section.






3. Use the SST to disconnect the male pipe or hose from the female by pulling the male pipe or hose.
NOTE:
- The male pipe or hose can be disconnected easily from the female pipe by pulling from the male pipe or hose while maintaining the pressure of the protruding part of the SST.





Refrigerant Line Installation Note

1. When installing a new cooler pipe or cooler hose, add a supplemental amount of FD46XG compressor oil into the refrigeration cycle. Supplemental amount (approx. quantity) 5 ml {5 cc, 0.2 fl oz}: Cooler pipe 10 ml {10 cc, 0.3 fl oz}: Cooler hose

2. Apply compressor oil to the O-rings and connect the joints.

3. Tighten the joints.

Spring-lock coupling type

1. Connect the male pipe or hose by pushing it while slightly twisting it onto female pipe until the garter spring at the male pipe or hose is over the flared end of female pipe.






NOTE:
- When the male pipe or hose is replaced, the indicator ring comes out after connecting to indicate that it is locked.