Air Conditioning System: Charging

REMOVE LUGGAGE COMPARTMENT TRIM BOX COVER
INSTALL CHARGING CYLINDER
HINT:

When handling the charging cylinder, always follow the directions given in the instruction manual.
1. Charge the proper amount of refrigerant into the charging cylinder.
  Specified amount: 500 +/- 30 g (17.64 +/- 1.06 oz.)
2. Connect the center hose to the charging cylinder.
  CAUTION: Do not open both high and low hand valves of manifold gauge set.
3. Open the valve of charging cylinder.
4. Press the valve core on the side of manifold gauge and purge the air inside of the center hose.
Fig 1: Connecting Center Hose To Charging Cylinder
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT REFRIGERATION SYSTEM FOR LEAKS
1. Open the high pressure hand valve and charge refrigerant.
2. When the low pressure gauge indicates 98 kPa (1 kgf/cm² , 14 psi) close the high pressure hand valve.
3. Using a gas leak detector, check the system for leakage.
CAUTION: Use the refrigerant recovery/ recycling machine to recover the refrigerant whenever replacing parts.

Fig 2: Identifying Gas Leak Detector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHARGE REFRIGERANT INTO REFRIGERANT SYSTEM
If there is no leak after refrigerant leak check, charge the proper amount of refrigerant into refrigeration system.
CAUTION:
- Never run the engine when charging the system through the high pressure side.
- Do not open the low pressure hand valve when the system is being charged with liquid refrigerant.
Fig 3: Identifying High And Low Pressure Service Valves
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Open the high pressure hand valve fully.
2. Charge specified amount of refrigerant, then close the high pressure hand valve.
  HINT:
  
  A fully charged system is indicated by the sight glass being free of any bubbles.
3. Charge partially refrigeration system with refrigerant.
  1. Set vehicle in these conditions:
    - Running engine at 1,500 RPM
    - Blower speed control switch: "HI"
    - Temperature control selector: "MAX. COOL"
    - Air inlet control selector: "RECIRC"
    - Fully open doors (Soft top: closed)
  2. Open the low pressure hand valve.
CAUTION: Do not open the high pressure hand valve.