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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) >> COMPRESSOR (for M20A-FXS) >> Installation [07/2022 - ] >> Procedure

Installation [07/2022 - ]: Procedure

  1. ADJUST COMPRESSOR OIL 
    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.
      GTY800479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard

      (Oil capacity inside the new compressor with motor assembly: 120 to 135 cc (4.06 to 4.56 fl. oz.)) - (Remaining oil amount in the removed compressor with motor assembly) = (Oil amount to be removed from the new compressor)

      NOTE:
      • 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.
  2. INSTALL COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Temporarily install the compressor with motor assembly with the 3 bolts.
    2. Tighten the 3 bolts and install the compressor with motor assembly in the order shown in the illustration.

      Torque: 25 N.m (255 kgf/cm, 18 ft.lbf) 

      Fig 1: Air Compressor Assembly Tightening Sequence
      GTY788681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the connector B.
      GTY821407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Connector A
      *b Connector B
      *c Green-colored Lock
    4. Remove the protective tape wrapped around connector A, and as shown in the illustration, connect connector A and lower the green lock to lock it securely.
      WARNING:

      Make sure to wear insulating gloves.

      NOTE:

      Make sure that the connector is connected securely.

  3. CONNECT SUCTION HOSE SUB-ASSEMBLY 
    1. Remove the vinyl tape from the suction hose sub-assembly.
    2. Apply sufficient compressor oil to a new O-ring and the fitting surface of the compressor with pulley assembly.

      Compressor Oil

      ND-OIL 11 or equivalent

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

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

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

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

  4. CONNECT DISCHARGE HOSE SUB-ASSEMBLY 
    1. Remove the vinyl tape from the discharge hose sub-assembly.
    2. Apply sufficient compressor oil to a new O-ring and the fitting surfaces of the cooler compressor with pulley assembly.

      Compressor Oil

      ND-OIL 11 or equivalent

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

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

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

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

  5. INSTALL NO. 1 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 67

  6. INSTALL SERVICE PLUG GRIP 

    Refer to INSTALLATION [10/2018 - ]

  7. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT 
    • for HFO-1234yf(R1234yf):

      See step  2

    • for HFC-134a(R134a):

      See step  2

  8. WARM UP COMPRESSOR 

    See step  3

  9. INSPECT FOR REFRIGERANT LEAK 
    • for HFO-1234yf(R1234yf):

      See step  4

    • for HFC-134a(R134a):

      See step  4