Workshop Manuals Factory service & repair Infiniti
01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Cruise Control16 Instrument Panel, Gauges and Warning Indicators17 Lighting and Horns18 Windows and Glass19 Wiper and Washer Systems
Infiniti G37 Convertible V6-3.7L (VQ37VHR) (2010)03 · Maintenance
03 · Maintenance

Refrigerant: Specifications (page 3 of 4)

Make
Infiniti
Model
G37 Convertible
Engine
V6-3.7L (VQ37VHR)
Year
2010
Section
Fluids › Refrigerant
MaintenanceSpecifications · page 3 of 4
background image

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

Pinch or Ctrl + scroll to zoom. Double-tap to reset.

Parts & tools for this job For 2010 Infiniti G37 3.7L

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.