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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (2 Of 3) >> COMPRESSOR (for PHEV Model) >> Installation [12/2023 - ] >> Procedure

Installation [12/2023 - ]: Procedure

  1. ADJUST COMPRESSOR OIL 
    1. GTY1239945Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Discharge Port *b Intake Port
      1. When replacing the compressor with motor assembly with a new one, gradually discharge the inert gas from the service valve, and drain the following amount of oil from the new compressor with motor assembly before installation.

        Standard

        (Oil capacity inside the new compressor with motor assembly: 220 to 235 cc (7.439 to 7.946 fl.oz)) - (Remaining oil amount in the removed compressor with motor assembly) = (Oil amount to be removed from the new compressor)

        NOTE:
        • When checking the compressor oil level, observe the precautions on the cooler removal/installation.
        • If a new compressor with motor assembly is installed without removing some oil, there will be too much oil in the system due to the oil remaining in the pipes of the vehicle. Excessive oil in the system prevents heat exchange in the refrigeration cycle and causes ineffective cooling.
        • If the amount of oil remaining in the old compressor with motor assembly is too small, check the air conditioning system for oil leaks.
        • Be sure to use ND-OIL 11 or equivalent compressor oil. If any compressor oil other than ND-OIL 11 is used, compressor with motor assembly insulation performance may decrease, resulting in leakage of electric power.
        • Make sure to add compressor oil from the intake port.
        • When it is not possible to confirm the amount of oil in the system such as when compressor oil is spilt due to damage caused by a vehicle collision, etc., install a new compressor without draining any oil. If also replacing the cooler condenser assembly, do not add the supplied oil (40 cc (1.35 fl.oz)).
  2. INSTALL COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Fig 1: Compressor With Motor Assembly Tightening Sequence
      GTY1230216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an E8 "TORX" socket wrench, temporarily install the compressor with motor assembly with the 2 stud bolts.

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

      2. Install the bracket.
      3. Install the compressor with motor assembly with the bolt and 2 nuts in the order shown in the illustration.

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

    2. GTY1230653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Engage the 2 clamps.
    3. GTY1237476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Connector (A) *b Connector (B)
      *c Green-colored Lock - -
      Slide - -
      1. Connect the connector (B).
      2. Remove the insulating tape from the connector (A), and connect the connector (A) and slide the green-colored lock as shown in the illustration to securely lock it.
        WARNING:

        Make sure to wear insulated gloves.

        NOTE:

        Make sure that the connector is connected securely.

    4. GTY1236783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Engage the 2 clamps.
  3. CONNECT NO. 1 COOLER REFRIGERANT DISCHARGE HOSE 
    1. GTY1235506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the vinyl tape from the No. 1 cooler refrigerant discharge hose, and sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor with motor assembly.

        Compressor Oil

        ND-OIL 11 or equivalent

      2. Install the O-ring to the No. 1 cooler refrigerant discharge hose.
        NOTE:
        • Keep the O-ring and O-ring fitting surface free of foreign matter.
        • Do not use any compressor oil other than ND-OIL 11 or equivalent. If any compressor oil other than ND-OIL 11 or equivalent is used, compressor motor insulation performance may decrease, resulting in leakage of electric power.
      3. Connect the No. 1 cooler refrigerant discharge hose to the compressor with motor assembly with the bolt.

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

  4. CONNECT SUCTION HOSE SUB-ASSEMBLY 
    1. GTY1231879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the vinyl tape from the suction hose sub-assembly, and sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor with motor assembly.

        Compressor Oil

        ND-OIL 11 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.
        • Do not use any compressor oil other than ND-OIL 11 or equivalent. If any compressor oil other than ND-OIL 11 or equivalent is used, compressor motor insulation performance may decrease, resulting in leakage of electric power.
      3. Connect the suction hose sub-assembly to the compressor with motor assembly with the bolt.

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

  5. INSTALL RADIATOR ASSEMBLY 

    Refer to INSTALLATION [12/2023 - ]

  6. INSTALL SERVICE PLUG GRIP 

    Refer to INSTALLATION [12/2023 - ]

  7. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT 

    Refer to PROCEDURE - Step 2

  8. WARM UP COMPRESSOR 

    Refer to PROCEDURE - Step 3

  9. INSPECT FOR REFRIGERANT LEAK 

    Refer to PROCEDURE - Step 5