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Refrigerant Line: Replacement

WARNING: This page is about a different car, the 2004 Lexus GS 430, 2004 Lexus GS 300, 2003 Lexus GS 430, and 2003 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM 
  2. REPLACE FAULTY TUBE OR HOSE 
    NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
  3. TIGHTEN JOINT OF BOLT OR NUT TO SPECIFIED TORQUE 
    NOTE: Connections should not be torqued tighter than the specified torqued.
    Torque Specification

    Part tightened N.m kgf.cm ft.lbf
    Compressor x Discharge hose 10 100 7
    Compressor x Suction hose 10 100 7
    Condenser x Discharge hose 10 100 7
    Condenser x Liquid tube 10 100 7
    A/C unit x Liquid and Suction tubes 10 100 7
    Expansion valve x Liquid and suction tube 4.1 42 36 in..lbf
    Evaporator x Liquid and suction tube 4.1 42 36 in..lbf
    Suction line (Block joint) 10 100 7
  4. EVACUATE AIR FROM REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH REFRIGERANT 

    Specified amount: 600 +/- 50 g (21.16 +/- 1.76 oz.) 

  5. INSPECT FOR LEAKAGE OF REFRIGERANT 

    Using a gas leak detector, check for leakage of refrigerant.

  6. INSPECT AIR CONDITIONING OPERATION 
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