LUBRICANT RETURN OPERATION Adjust the lubricant quantity according to the test group shown below. 1.CHECK A/C SYSTEM

1. Check that A/C system operates normally. Refer to Description & Inspection.
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>>Check for refrigerant leakage. Refer to Inspection.
2.PERFORM LUBRICANT RETURN OPERATION

1. Start the engine, and run it as following.

- 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.REPAIR OR REPLACE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.
2. Perform the lubricant adjustment depending on the replaced part.

Except compressor >>Refer to Lubricant Adjusting Procedure for Components Replacement Except Compressor (GT-R certified NISSAN dealer).
Compressor >>Refer to Lubricant Adjusting Procedure for Compressor Replacement (GT-R certified NISSAN dealer).