Checking And Adjusting

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: If excessive oil leakage is noted, do not perform the oil return operation.

Start the engine and set the following conditions:

Test Condition

Engine speed: Idling to 1, 200 rpm
A/C switch: On
Blower fan speed: MAX position
Temp. control: Optional [Set so that intake air temperature is 25 deg. to 30 deg. C (77 deg. to 86 deg.F)]
Intake position: Recirculation ( )
Perform oil return operation for about ten minutes

Adjust the oil quantity according to the following table.

Oil Adjusting Procedure for Components Replacement Except Compressor

After replacing any of the following major components, add the correct amount of oil to the system.

Amount of Oil to be Added

Part replaced	Oil to be added to system	Remarks
Part replaced	Amount of oil m (US fl oz, Imp fl oz)	Remarks
Evaporator	75 (2.5, 2.6)	--
Condenser	75 (2.5, 2.6)	--
Liquid tank	5 (0.2, 0.2)	Add if compressor is not replaced.
In case of refrigerant leak	30 (1.0, 1.1)	Large leak
In case of refrigerant leak	--	Small leak *1

*1:If refrigerant leak is small, no addition of oil is needed.

Oil Adjustment Procedure for Compressor Replacement

Courtesy of NISSAN NORTH AMERICA, INC.

1.	New compressor	2.	Old compressor	3.	Recovery/recycling equipment
4.	Measuring cup X	5.	Measuring cup Y	6.	New oil
A.	Drain oil from the new compressor into clean container	B.	Record amount of oil recovered	C.	Add an additional 5 m (0.2 US fl oz, 0.2 Imp fl oz) of new oil when replacing liquid tank
D.	Install new oil equal to recorded amounts in measuring cups X plus Y

Before connecting recovery/recycling equipment to vehicle, check recovery/recycling equipment gauges. No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.
Connect recovery/recycling equipment to vehicle. Confirm refrigerant purity in supply tank using recovery/recycling equipment and refrigerant identifier. If NG, refer to Maintenance of Oil Quantity in Compressor .
Confirm refrigerant purity in vehicle A/C system using recovery/recycling equipment and refrigerant identifier. If NG, refer to Maintenance of Oil Quantity in Compressor .
Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure oil discharged into the recovery/recycling equipment.
Drain the oil from the "old" (removed) compressor into a graduated container and recover the amount of oil drained.
Drain the oil from the "new" compressor into a separate, clean container.
Measure an amount of new oil installed equal to amount drained from "old" compressor. Add this oil to "new" compressor through the suction port opening.
Measure an amount of new oil equal to the amount recovered during discharging. Add this oil to "new" compressor through the suction port opening.
If the liquid tank also needs to be replaced, add an additional 5 m (0.2 US fl oz, 0.2 Imp fl oz) of oil at this time.
CAUTION: Do not add this 5 m (0.2 US fl oz, 0.2 Imp fl oz) of oil if only replacing the compressor.