Nissan Teana J32. Manual — part 650
HA-28
< ON-VEHICLE MAINTENANCE >
LUBRICANT
LUBRICANT
Maintenance of Lubricant Quantity
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The lubricant in the compressor circulates through the system the refrigerant. Add lubricant to compressor
when replacing any component or after a large refrigerant 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
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 excessive lubricant leakage is detected.
Is it successful?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
PERFORM LUBRICANT RETURN OPERATION
1.
Start the engine, and set to the following conditions:
-
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-29, "Lubricant Adjusting Procedure for Compressor Replacement"
NO
>> Refer to
HA-28, "Lubricant Adjusting Procedure for Components Replacement Except Compres-
Lubricant Adjusting Procedure for Components Replacement Except Compressor
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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
(Imp fl oz.)
Evaporator
75 (2.6)
—
Condenser
35 (1.2)
—
Liquid tank
10 (0.4)
—
LUBRICANT
HA-29
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*: No addition of lubricant is needed if the refrigerant leakage is small.
Lubricant Adjusting Procedure for Compressor Replacement
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1.
Check recovery/recycling recharging equipment gauges before connecting recovery/recycling recharging
equipment to vehicle. No refrigerant pressure should be displayed. Recover refrigerant from the equip-
ment lines if NG.
2.
Discharge refrigerant into the recovery/recycling recharging equipment. Measure lubricant discharged into
the recovery/recycling recharging equipment.
3.
Drain the lubricant from the old (removed) compressor into a graduated container and recover the amount
of lubricant drained.
4.
Drain the lubricant from the new compressor into a separate. Then clean container.
5.
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.
6.
Measure an amount of new lubricant equal to the amount recovered during discharging. Add this lubricant
to new compressor through the suction port opening.
7.
Add another 5 m (0.2 Imp fl oz.) of lubricant at this time if the liquid tank also needs to be replaced.
Do not add this 5 m (0.2 Imp fl oz.) of lubricant when replacing the compressor only.
In case of refrigerant leakage
30 (1.1)
Large leakage
—
Small leakage
*
Part replaced
Lubricant to be added to system
Remarks
Amount of lubricant
m
(Imp fl oz.)
SJIA0596E
HA-30
< ON-VEHICLE MAINTENANCE >
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
Inspection
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1.
CHECK BLOWER MOTOR OPERATION
Check blower motor operation. Refer to the following.
•
HAC-68, "Component Function Check"
(WITHOUT 7 INCH DISPLAY)
•
HAC-193, "Component Function Check"
(WITH 7 INCH DISPLAY)
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the parts according to the inspection results.
2.
CHECK COMPRESSOR OPERATION
Check compressor operation. Refer to the following.
•
HAC-72, "Component Function Check"
(WITHOUT 7 INCH DISPLAY)
•
HAC-197, "Component Function Check"
(WITH 7 INCH DISPLAY)
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the parts according to the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform the diagnosis with the gauge
pressure. Refer to
HA-8, "Trouble Diagnosis For Unusual Pressure"
Is the inspection result normal?
YES
>> Perform the performance test. Refer to
.
NO
>> Repair or replace the parts according to the inspection results.
Performance Chart
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TEST CONDITION
Testing must be performed as per the following:
TEST READING
Recirculating-to-discharge Air Temperature Table
Vehicle condition
Indoors or in the shade (in a well-ventilated place)
Doors
Closed
Door windows
Open
Hood
Open
Temperature control switch or dial
Max. COLD
Mode switch
(Ventilation) set
Intake switch
(Recirculation) set
Fan (blower) speed
Max. speed set
Engine speed
Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°
C (
°
F)
Relative humidity
%
Air temperature
°
C (
°
F)
50 - 60
25 (77)
8.4 - 10.9 (47 - 52)
30 (86)
12.3 - 15.3 (54 - 60)
35 (95)
15.8 - 19.2 (60 - 67)
REFRIGERATION SYSTEM
HA-31
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Ambient Air Temperature-to-operating Pressure Table
Refrigerant Leakages
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Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C lubricant
leakage, damage and corrosion. A/C lubricant leakage may indicate an area of refrigerant leakage. Allow
extra inspection time in these areas when using either an electrical leak detector or fluorescent dye leak
detector (SST: J-42220).
Confirm the leakage with an electrical leak detector if dye is observed. It is possible a prior leakage was
repaired and not properly cleaned.
Do not stop when one leakage is found but continue checking for additional leakages at all system compo-
nents and connections when searching for leakages.
Move the probe along the suspected leakage area at 1 to 2 inches per second and no further than 1/4 inch
from the component when searching for refrigerant leakages using an electrical leak detector.
CAUTION:
Moving the electrical leak detector probe slower and closer to the suspected leakage area improves
the chances of finding a leakage.
60 - 70
25 (77)
10.9 - 13.4 (52 - 56)
30 (86)
15.3 - 18.3 (60 - 65)
35 (95)
19.2 - 22.7 (67 - 73)
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2
, psi)
Low-pressure (Suction side)
kPa (bar, kg/cm
2
, psi)
Relative humidity
%
Air temperature
°
C (
°
F)
50 -70
25 (77)
1,065 - 1,295
(10.62 - 12.95, 10.9 - 13.2, 154.4 - 187.8)
215 - 261
(2.15 - 2.61, 2.1 - 2.6, 31.2 - 37.9)
30 (86)
920 - 1,120
(9.20 - 11.20, 9.4 - 11.4, 133.4 - 162.4)
230 - 287
(2.30 - 2.87, 2.3 - 2.9, 33.4 - 41.6)
35 (95)
1,150 - 1,406
(11.50 - 14.06, 11.7 - 14.3, 167.0 - 203.9)
287 - 355
(2.87 - 3.55, 2.9 - 3.6, 41.6 - 51.5)
40 (104)
1,363 - 1,659
(13.63 - 16.59, 13.9 - 16.9, 197.7 - 240.6)
320 - 392
(3.20 - 3.92, 3.3 - 3.9, 46.4 - 56.9)
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°
C (
°
F)
Relative humidity
%
Air temperature
°
C (
°
F)
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