G37 Convertible V6-3.7L (VQ37VHR) (2010)
1.CHECK A/C SYSTEM
1. Check that A/C system operates normally. .
2. Check if there is a large amount of leakage of refrigerant or lubricant.
CAUTION:
Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.
Is the inspection result normal?
YES - GO TO 2.
NO-1 - Check for refrigerant leakage. See: Heating and Air Conditioning/Service and Repair/Procedures/Fluorescent Leak Detector.
NO-2 - If using electrical leak detector (SST: J-41995). See: Heating and Air Conditioning/Service and Repair/Procedures/Electrical Leak Detector.
2.LUBRICANT RETURN OPERATION
1. Start the engine and run it as follows.
- Engine speed: Idle - 1,200 rpm
- A/C switch: ON
- Fan speed: Maximum position
- Set temperature: Full hot
- Intake position: Recirculation (REC)
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
- GO TO 3.
3.CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1. Operate recovery/recycling recharging equipment.
CAUTION:
-
Follow the instructions of the manufacturer for the handling or maintenance of the equipment.
-
Never fill the equipment with undesignated refrigerant.
2. Check the gauge pressure of recovery/recycling recharging equipment.
Is there pressure?
YES - GO TO 4.
NO - GO TO 5.
4.DISCHARGE REFRIGERANT INSIDE PIPES
Discharge the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling recharging equipment.
- GO TO 5.
5.CONNECT RECOVERY/RECYCLING RECHARGING EQUIPMENT
1. Remove the service valve caps from the vehicle.
2. Connect recovery/recycling recharging equipment to the service valves.
- GO TO 6.
6.DISCHARGE REFRIGERANT FROM THE VEHICLE
Operate recovery/recycling recharging equipment to discharge the refrigerant from the vehicle.
- GO TO 7.
7.REMOVE ANY REMAINING REFRIGERANT
Evacuate air for approximately 10 minutes or more to remove any remaining refrigerant integrated to the compressor oil, etc.
- GO TO 8.
8.REPLACE OR REPAIR REFRIGERANT SYSTEM PARTS
1. Replace or repair the malfunctioning part.
CAUTION:
-
Always use a new O-ring for the parts that the cooler system was removed.
-
Apply compressor oil to the O-rings of piping when installing the piping. However, never apply it to the threads.
2. Adjust the compressor oil amount according to the replaced parts. See: Refrigerant Oil/Service and Repair/Description.
- GO TO 9.
9.EVACUATE AIR FROM THE REFRIGERANT SYSTEM
Evacuate air from the refrigerant system for approximately 25 minutes or more.
CAUTION:
Evacuate air for at least approximately 15 minutes or more if the parts are replaced.
- GO TO 10.
10.CHECK AIRTIGHTNESS OF REFRIGERANT SYSTEM
Check the airtightness of the refrigerant system for approximately 25 minutes or more.
CAUTION:
Check the airtightness for at least approximately 15 minutes or more if the parts are replaced.
Does the pressure decrease?
YES - GO TO 11.
NO - GO TO 8.
11.CHECK REFRIGERANT LEAKAGE