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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (2 Of 3) >> COMPRESSOR (for Gasoline Model) >> Installation [10/2022 - ] >> Procedure

Installation [10/2022 - ]: Procedure

  1. ADJUST COMPRESSOR OIL 
    1. GTY1137775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Drain Bolt (Seal Washer) *b Oil Port
      *c Turn Clockwise - -
      1. When replacing the compressor assembly with pulley with a new one, gradually discharge the inert gas (helium) from the service valve, and drain the following amount of oil before installation.
        NOTE:
        • If a new compressor assembly with pulley is installed without removing the same amount of compressor oil as is remaining in the pipes, the amount of compressor oil will be excessive. This prevents heat exchange in the refrigerant cycle and will cause the air conditioning system to malfunction.
        • A certain amount of compressor oil remains in the compressor assembly with pulley during circulation and the compressor may be damaged if the amount of compressor oil is more/less than this amount. Therefore, make sure to adjust the amount of compressor oil correctly.
        • If the amount of compressor oil remaining in the removed compressor assembly with pulley is excessively low, check for compressor oil leaks.
        • Do not race the engine before replacing the compressor assembly with pulley.
        • Make sure to use ND-OIL 12 or equivalent compressor oil.

        1. Remove the drain bolt (seal washer) from the removed compressor assembly with pulley.

        2. Drain the compressor oil from the oil port of the removed compressor assembly with pulley as shown in the illustration.

        NOTE:

        Make sure to drain the compressor oil from the oil port.

        3. Remove the drain bolt (seal washer) from a new compressor assembly with pulley.

        HINT: 

        The drain bolt (seal washer) can be reused.

        4. Drain the following amount of compressor oil from the oil port of the new compressor assembly with pulley as shown in the illustration.

        Standard

        (The amount of oil in a new compressor assembly with pulley: 70 (+15) cc (2.37 (+0.51) fl.oz)) - (The amount of oil in the removed compressor assembly with pulley) = The amount of oil to be removed from the new compressor assembly with pulley.

        NOTE:
        • Make sure to drain the compressor oil from the oil port.
        • Make sure to add the compressor oil from the oil port, not from the discharge or intake port.
        • If a tool is used to add compressor oil to the new compressor assembly with pulley, make sure that it is free of foreign matter.
        • If the amount of compressor oil remaining in the removed compressor assembly with pulley cannot be estimated because the compressor was damaged and oil was discharged due to a frontal collision, etc., install a new compressor assembly with pulley without removing any oil. If the cooler condenser assembly is also replaced, do not add the specified amount of compressor oil for cooler condenser assembly replacement (40 cc (1.35 fl.oz)).

        5. Install the drain bolt (seal washer) to the new compressor assembly with pulley.

        Torque: 30 N.m (306 kgf/cm, 22 ft.lbf) 

        NOTE:

        Make sure that there is no damage or foreign matter on the seal washer edge.

  2. INSTALL COMPRESSOR ASSEMBLY WITH PULLEY 
    1. for Type A:
      GTY1137397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an E8 "TORX" socket wrench, temporarily install the compressor assembly with pulley with the 2 stud bolts.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      2. Install the compressor assembly with pulley with the 2 bolts and 2 nuts in the order shown in the illustration.

        Torque: 24.5 N.m (250 kgf/cm, 18 ft.lbf) 

    2. for Type B:
      GTY1254879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Install the compressor assembly with pulley with the 4 bolts in the order shown in the illustration.

        Torque: 24.5 N.m (250 kgf/cm, 18 ft.lbf) 

    3. GTY1134616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the connector.
  3. CONNECT DISCHARGE HOSE SUB-ASSEMBLY 
    1. GTY1135618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the vinyl tape, and sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

        Compressor Oil

        ND-OIL 12 or equivalent

      2. Install the O-ring to the discharge hose sub-assembly.
        NOTE:

        Keep the O-ring and O-ring fitting surface free of foreign matter.

      3. Connect the discharge hose sub-assembly to the compressor assembly with pulley with the bolt.

        Torque: 9.8 N.m (100 kgf/cm, 87 in.lbf) 

  4. CONNECT SUCTION HOSE SUB-ASSEMBLY 
    1. GTY1136899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the vinyl tape, sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

        Compressor Oil

        ND-OIL 12 or equivalent

      2. Install the O-ring to the suction hose sub-assembly.
        NOTE:

        Keep the O-ring and O-ring fitting surface free of foreign matter.

      3. Connect the suction hose sub-assembly to the compressor assembly with pulley with the bolt.

        Torque: 9.8 N.m (100 kgf/cm, 87 in.lbf) 

  5. INSTALL RADIATOR ASSEMBLY 

    Refer to INSTALLATION [10/2022 - ]

  6. INSTALL V-RIBBED BELT 

    Refer to INSTALLATION [10/2022 - ]

  7. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT 

    Refer to PROCEDURE - Step 2 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 3 [08/2023 - ]

  8. WARM UP ENGINE 

    Refer to PROCEDURE - Step 4 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 5 [08/2023 - ]

  9. INSPECT FOR REFRIGERANT LEAK 

    Refer to PROCEDURE - Step 5 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 6 [08/2023 - ]