Hose/Line HVAC: Service and Repair

NOTE: The suction accumulator / drier should be replaced if a refrigerant hose is replaced due to the possibility of dirt or moisture entering the system.

Removal

1. Discharge the refrigerant from the system. Observe all safety precautions.

2. Disconnect and remove the refrigerant line(s) using a wrench on each side of the fitting, or the proper spring lock coupling disconnect tool.

Installation

1. Route the new refrigerant line(s) (with protective caps installed). Refer to the appropriate illustration which follows.


















2. Connect the refrigerant line into the system using new 0-rings lubricated with clean refrigerant oil or new specified 0-rings if coupled. Use two wrenches to tighten the threaded fittings to the torque specified or connect the spring lock coupling in accordance with the proper procedure.

3. Leak test, evacuate and charge the refrigerant system. Observe all safety precautions.

4. Check the air conditioning system for proper operation.