Infiniti EX35. Manual - part 892

REFRIGERANT

HA-27

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WARNING:

Never breath A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting requirements
of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a) recovery equip-
ment]. Ventilate work area before resuming service if accidental system discharge occurs. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.

1.

CHECK A/C SYSTEM

1.

Check that A/C system operates normally. Refer to 

HAC-6, "WITHOUT LEFT AND RIGHT VENTILATION

TEMPERATURE SEPARATELY CONTROL SYSTEM : Description & Inspection"

 (Without left and right

ventilation temperature separately control system) or 

HAC-11, "WITH LEFT AND RIGHT VENTILATION

TEMPERATURE SEPARATELY CONTROL SYSTEM : Description & Inspection"

 (With left and right venti-

lation temperature separately control system).

2.

Check if there is a large amount of leakage of refrigerant or oil. 

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 

HA-35, "Inspection"

.

2.

LUBRICANT RETURN OPERATION

1.

Start the engine and run it as follows. 

-

Engine speed: Idle - 1,200 rpm

-

A/C switch: ON

-

Blower speed: Max. position

-

Air inlet: Recirculation (REC)

-

Set temperature: FULL HOT

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. 

HA-28

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REFRIGERANT

>> GO TO 7.

7.

REMOVE ANY REMAINING REFRIGERANT

Evacuate air for approximately 10 minutes or more to remove any remaining refrigerant integrated to the com-
pressor 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. Refer to 

HA-30, "Maintenance of Lubri-

cant Quantity"

.

>> 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

1.

Connect refrigerant recovery/recycling recharging equipment or manifold gauge set (SST: J-39183). 

2.

Charge the refrigerant of approximately 200 g to the refrigerant system. 

3.

Check for refrigerant leakage. Refer to 

HA-35, "Inspection"

.

NOTE:
When using electrical leak detector (SST: J-41995). Refer to 

HA-36, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair or replace parts according to the inspection results.

12.

CHARGE REFRIGERANT

1.

Connect recovery/recycling recharging equipment or manifold gauge set (SST: J-39183). 

2.

Evacuate air again. 

3.

Charge the specified amount of refrigerant to the refrigerant system. 

>> GO TO 13.

13.

CHECK REFRIGERANT LEAKAGE

Check for refrigerant leakage again. Refer to 

HA-35, "Inspection"

.

NOTE:
When using electrical leak detector (SST: J-41995). Refer to 

HA-36, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> GO TO 6.

REFRIGERANT

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14.

CHECK OPERATION

Check the A/C system for normal operation. Refer to 

HA-33, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Repair or replace parts according to the inspection results. 

15.

CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT

1.

Disconnect recovery/recycling recharging equipment or manifold gauge set (SST: J-39183). 

2.

Discharge the refrigerant from the high-pressure hose and low-pressure hose of the recovery/recycling
recharging equipment. 

3.

Install the service valve caps. 

>> END

HA-30

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LUBRICANT

LUBRICANT

Maintenance of Lubricant Quantity

INFOID:0000000003545466

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

LUBRICANT

LUBRICANT RETURN OPERATION

Adjust the lubricant quantity according to the test group shown below.

1.

CHECK LUBRICANT RETURN OPERATION

Can lubricant return operation be performed?
• A/C system works normally.
• There is no evidence of a large amount of lubricant leakage.

CAUTION:

Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.

Is it successful?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

PERFORM LUBRICANT RETURN OPERATION

1.

Start the engine, and run it as following:

-

Engine speed: Idling to 1,200 rpm

-

A/C switch: ON

-

Blower speed: Max. 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 REPLACEMENT PART

Should the compressor be replaced?

YES

>> Refer to 

HA-31, "Lubricant Adjusting Procedure for Compressor Replacement"

.

NO

>> Refer to 

HA-30, "Lubricant Adjusting Procedure for Components Replacement Except Compres-

sor"

.

Lubricant Adjusting Procedure for Components Replacement Except Compressor

INFOID:0000000003545467

Add the correct amount of lubricant to the system after replacing any of the following major components.
Amount of lubricant to be added:

Name

: NISSAN A/C System Oil Type S

Part replaced

Lubricant to be added to system

Remarks

Amount of lubricant

m

 (US fl oz., Imp fl oz.)

Evaporator

75 (2.5, 2.6)

—

Condenser

35 (1.2, 1.2)

—

Liquid tank

10 (0.3, 0.4)

—