Refrigerant Oil: Service and Repair

The lubricant in the compressor circulates through the system with the refrigerant. Add lubricant to compressor when replacing any component or after a large gas leakage occurred. It is important to maintain the specified amount.
If lubricant quantity is not maintained properly, the following malfunctions may result :
- Lack of lubricant : May lead to a seized compressor
- Excessive lubricant : Inadequate cooling (thermal exchange interference)

LUBRICANT
Name : Nissan A/C System Lubricant Type R
Part number : KLHOO-PAGR1

Step 1:

Step 2:

Step 3:

Step 4:

CHECKING AND ADJUSTING
Adjust the lubricant quantity according to the flowchart shown below.

Lubricant Adjusting Procedure for Components

Replacement Except Compressor
After replacing any of the following major components, add the correct amount of lubricant to the system.




Amount of lubricant to be added




Lubricant Adjusting Procedure for Compressor Replacement
1. Before connecting ACR4 to vehicle, check ACR4 gauges. No refrigerant pressure should be displayed, recover refrigerant from equipment lines and then check refrigerant purity.
2. Confirm refrigerant purity in supply tank using ACR4 and refrigerant identifier.
3. Confirm refrigerant purity in vehicle A/C system using ACR4 and refrigerant identifier.
4. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure lubricant discharged into the recovery/recycling equipment.
5. Drain the lubricant from the old (removed) compressor into a graduated container and record the amount of lubricant drained.
6. Drain the lubricant from the new compressor into a separate, clean container.
7. Measure an amount of new lubricant installed equal to amount drained from old compressor. Add this lubricant to new compressor through the suction port opening.
8. Measure an amount of new lubricant equal to the amount recovered during discharging. Add this lubricant to new compressor through the suction port opening.
9. If the liquid tank also needs to be replaced, add an additional 5 ml (0.2 US fl oz, 0.2 Imp fl oz) of lubricant at this time
Do not add this 5 ml (0.2 US fl oz, 0.2 Imp fl oz) of lubricant if only replacing the compressor.