| TIBURON(GK) >2006 > G 2.7 DOHC > Heating,Ventilation, Air Conditioning > General Information>Repair procedures |

INSPECT FOR LEAKAGE OF REFRIGERANT
Always conduct a leak test with an electronic leak detector whenever leakage or refrigerant is suspected and when conducting service operations which are accompanied by disassembly or loosening or connection fittings.
In order to use the leak detector properly, read the manual supplied by the manufacturer.
1. | Check the torque on the connection fittings and, if too loose, tighten to the proper torque. Check for gas leakage with a leak detector.
2. | If leakage continues even after the fitting has been tightened, discharge the refrigerant from the system, disconnect the fittings, and check their seating faces for damage. Always replace, even if the damage is slight.
3. | Check the compressor oil and add oil if required.
4. | Charge the system and recheck for gas leaks. If no leaks are found, evacuate and charge the system again
A/C SYSTEM TESTS
• | Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
• | Be careful when connecting service equipment.
• | Do not breathe refrigerant or vapor.
• | Compressed air mixed with R-134a forms a combustible vapor.
• | The vapor can burn or explode causing serious injury.
• | Never use compressed air to pressure test R-134a service equipment or vehicle air conditioning systems.
1. | Connect a R-134a refrigerant recover/recycling/charging station to the high-pressure service port and the low-pressure service port, following the equipment manufacturer s instructions.
2. | Insert a thermometer in the center vent. Determine the relative humidity and air temperature.
3. | Test conditions :
A. | Avoid direct sunlight.
B. | Open the hood.
C. | Open the front doors.
D. | Set the temperature control dial on MAX COOL, the mode control switch on VENT and the recirculation control switch on RECIRCULATE.
E. | Turn the A/C switch on and the fan switch on MAX.
F. | Run the engine at 1,500 rpm.
G. | No driver or passengers in vehicle.
4. | After running the air conditioning for 10 minutes under the above test conditions, read the delivery temperature from the thermometer in the dash vent, the intake temperature near the blower unit behind the glove box and the high and low system pressure from the A/C gauges.
5. | To complete the chart
A. | Mark the delivery temperature along the vertical line
B. | Mark the intake temperature along the bottom line
C. | Draw a line straight up from the air temperature to the humidity
D. | Mark a point 10% above and 10% below the humidity level
E. | From each point
F. | Draw a horizontal line across the delivery temperature
G. | The delivery temperature should fall between the two lines
H. | Complete the low side pressure test and high side pressure test in the same way
I. | Any measurements outside the line may indicate the near for more further inspection
REFRIGERANT RECOVERY
• | Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
• | Be careful when connecting service equipment.
• | Do not breathe refrigerant or vapor.
1. | Connect a R-134a refrigerant recovery/recycling/charging station(A) to the high-pressure service port(B) and the low-pressure service port(C), as shown, following the equipment manufacturer s instruction.
2. | Measure the amount of refrigerant oil removed from the A/C system after the recovery process is completed. Be sure to put the same amount of new refrigerant oil back into the A/C system before charging.
SYSTEM EVACUATION
• | Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
• | Be careful when connecting service equipment.
• | Do not breathe refrigerant or vapor.
1. | When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using a R-134a refrigerant recover/recycling/charging station (If the system has been open for several days, the receiver/dryer should be replaced, and the system should be evacuated for several hours.)
2. | Connect a R-134a refrigerant recovery/recycling/charging station(A) to the high-pressure service port(B) and the low-pressure service port(C), as shown, following the equipment manufacturer s instruction. Evacuate the system.
3. | If the low-pressure does not reach more than 93.3 kPa (700 mmHg, 27.6 in.Hg) in 15 minutes, there is probably a leak in the system. Partially charge the system, and check for leaks.
SYSTEM CHARGING
• | Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
• | Be careful when connecting service equipment.
• | Do not breathe refrigerant or vapor.
1. | Connect a R-134a refrigerant recover/recycling/charging station(A) to the high-pressure service port(B) and the low-pressure service port(C), as shown, following the equipment manufacture s instructions.
2. | Add the same amount of new refrigerant oil to the system that was removed during recovery. Use only FD46XG (PAG) refrigerant oil
3. | Carge the system with the specified amount of R-134a refrigerant. Do not overcharge the system; the compressor will be damaged.
Refrigerant capacity : 600 ± 25g