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1-18 HEATING AND AIR CONDITIONING LEAK AT REFRIGERANT LINE CONNECTIONS 1) Check the torque on the refrigerant line fitting and, if too loose, tighten to the specified torque. • Use two wrenches to prevent twisting and damage to the line. • Do not over tighten. 2) Perform a leak test on the refrigerant line fitting. 3) If the leak is still present, discharge and recover the refrigerant from the system. 4) Replace the O-rings. • O-rings cannot be reused. Always replace with new ones. • Be sure to apply specified compressor oil to the new O- rings. 5) Retighten the refrigerant line fitting to the specified torque. • Use two wrenches to prevent twisting and damage to the line. 6) Evacuate, charge and retest the system. LEAK IN THE HOSE If the compressor inlet or outlet hose is leaking, the entire hose must be replaced. Refrigerant hose must not be cut or spliced for repair. 1) Locate the leak. 2) Discharge and recover the refrigerant. 3) Remove the hose assembly. • cap the open connections at once. 4) Connect the new hose assembly. • Use two wrenches to prevent twisting or damage to the hose fitting. • Tighten the hose fitting to the specified torque. 5) Evacuate, charge and test the system. COMPRESSOR LEAKS If leaks are located around the compressor shaft seal or shell, replace the compressor. REPLACEMENT OF COMPONENT PARTS When replacing system component parts, supply the following amount of oil to the component parts to be installed. cc (lmp fl oz) Component parts to be installed Amount of oil Evaporator 50 (1.4) Condenser 30 (0.8) Receiver /drier 30 (0.8) Refrigerant line (one piece) 10 (0.3) |