Refrigerant Replacement


  1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

  2. CHARGE REFRIGERANT

  3. WARM UP ENGINE

  4. CHECK FOR REFRIGERANT GAS LEAK

Refrigerant -- Replacement



1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

  1. Start the engine.

  1. Operate the cooler compressor under the conditions shown below:

    Item
    		Condition
    Engine Speed
    		Idling
    Operating Time
    		3 minutes or more
    A/C Switch Status
    		On
    Blower Switch Status
    		HI
    Set Temperature
    		MAX COOL
    This causes most of the compressor oil from the various components of the A/C system to collect in the A/C compressor.
    NOTICE:
    It is not necessary to operate the cooler compressor if the A/C does not operate because of compressor lock, etc.

  1. Stop the engine.

  1. Recover the refrigerant from the A/C system using a refrigerant recovery unit.

    HINT:
    Use the refrigerant recovery unit in accordance with the manufacturer's instruction manual.


2. CHARGE REFRIGERANT
SST
09985-20010(09985-02130,09985-02150,09985-02090,09985-02110,09985-02010,09985-02050,09985-02060,09985-02070)

  1. Perform vacuum purging using a vacuum pump.



  1. Charge refrigerant HFC-134a (R134a).

    Standard
    Model Code
    		Air Conditioning Type
    		Cool Box
    		Refrigerant Charging Amount
    Except the model codes below
    		w/o Rear Cooler
    		w/ Cool Box
    		600 +/-30 g (21.2 +/-1.1 oz.)
    w/o Cool Box
    		550 +/-30 g (19.3 +/-1.1 oz.)
    w/ Rear Cooler
    		w/ Cool Box
    		800 +/-30 g (28.2 +/-1.1 oz.)
    w/o Cool Box
    		770 +/-30 g (27.2 +/-1.1 oz.)
    w/ Rear Cooler
    for Cold Area Specification Vehicles
    		w/o Cool Box
    		720 +/-30 g (25.3 +/-1.1 oz.)
    GRJ150L-GKFEKV
    GRJ150L-GKTEKV
    KDJ150L-GKAEYV
    TRJ150L-GKMEKV
    TRJ150L-GKTEKV
    TRJ155L-GJTEKV
    		w/o Rear Cooler
    		w/ Cool Box
    		600 +/-30 g (21.2 +/-1.1 oz.)
    w/o Cool Box
    		550 +/-30 g (19.3 +/-1.1 oz.) or 600 +/-30 g (21.2 +/-1.1 oz.) *1
    w/ Rear Cooler
    		w/ Cool Box
    		800 +/-30 g (28.2 +/-1.1 oz.)
    w/o Cool Box
    		770 +/-30 g (27.2 +/-1.1 oz.)
    *1: For vehicles with the 2TR-FE engine which have neither the rear cooler nor cool box, the refrigerant charging amount changes based on region.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Refrigerant Replacement

    NOTICE:
    1. Do not operate the cooler compressor before charging refrigerant as the cooler compressor will not work properly without any refrigerant, and will overheat.
    2. Approximately 100 g (3.53 oz.) of refrigerant may need to be charged after bubbles disappear. The refrigerant amount should be checked by measuring its quantity, and not with the sight glass.


3. WARM UP ENGINE

  1. Warm up the engine at less than 1850 rpm for 2 minutes or more after charging the refrigerant.

    NOTICE:
    Be sure to warm up the compressor when turning the A/C switch is on after removing and installing the cooler refrigerant lines (including the compressor), to prevent damage to the compressor.


4. CHECK FOR REFRIGERANT GAS LEAK

  1. After recharging the refrigerant gas, check for refrigerant gas leakage using a halogen leak detector.

  1. Perform the operation under these conditions:

    1. Stop the engine.
    2. Secure good ventilation (the halogen leak detector may react to volatile gases other than refrigerant, such as evaporated gasoline or exhaust gas).
    3. Repeat the test 2 or 3 times.
    4. Make sure that some refrigerant remains in the refrigeration system. When compressor is off: approximately 392 to 588 kPa (4.0 to 6.0 kgf/cm2, 57 to 85 psi).


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Refrigerant Replacement

  1. Using a halogen leak detector, check the refrigerant line for leakage.

    Text in Illustration
    *1
    		Halogen Leak Detector
    *a
    		Check for Leakage

  1. If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor) from the cooling unit. Insert the halogen leak detector sensor into the unit and perform the test.

  1. Disconnect the connector and wait for approximately 20 minutes. Bring the halogen leak detector close to the pressure switch and perform the test.