Nissan Titan A60. Manual - part 572

REFRIGERATION SYSTEM

HA-17

< SYSTEM DESCRIPTION >

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Component

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A/C Compressor and Condenser

ALIIA0402ZZ

1.

High-pressure service valve

2.

Grommet

3.

High-pressure pipe

4.

Refrigerant pressure sensor

5.

Condenser

6.

Compressor shaft seal

7.

High-pressure flexible hose

8.

Low-pressure flexible hose

9.

Low-pressure service valve

10. Low-pressure pipe

11. Expansion valve

12. Drain hose

HA-18

< SYSTEM DESCRIPTION >

REFRIGERATION SYSTEM

NOTE:

Refer to 

HA-5, "Precaution for Refrigerant Connection"

 .

13. Dryer & liquid tank

14. Liquid tank bracket

15. Junction pipe

Front

OIL

HA-19

< SYSTEM DESCRIPTION >

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OIL

Maintenance of Oil Quantity in Compressor

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The oil in the compressor circulates through the system with the refrigerant. Add oil to compressor when

replacing any component or after a large refrigerant leakage has occurred. It is important to maintain the spec-

ified amount.

If oil quantity is not maintained properly, the following malfunctions may result:

• Lack of oil: May lead to a seized compressor

• Excessive oil: Inadequate cooling (thermal exchange interference)

HA-20

< PERIODIC MAINTENANCE >

OIL

PERIODIC MAINTENANCE

OIL

Maintenance of Oil Quantity in Compressor

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CHECKING AND ADJUSTING

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

° to 30° C (77° to 86°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

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

Oil Adjustment Procedure for Compressor Replacement

Part replaced

Oil to be added to system

Remarks

Amount of oil

m  (US fl oz, Imp fl oz)

Evaporator

75 (2.5, 2.6)

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Condenser

75 (2.5, 2.6)

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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

—

Small leak *1