Nissan Sentra. Instruction — part 533
HA-26
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OIL
Oil Adjusting Procedure for Compressor Replacement
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1. Before connecting recovery/recycling equipment to vehicle, check recovery/recycling equipment gauges.
No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.
2. Connect recovery/recycling equipment to vehicle. Confirm refrigerant purity in supply tank using recovery/
recycling equipment and refrigerant identifier. If NG, refer to
HA-4, "Precautions For Refrigerant System
3. Confirm refrigerant purity in vehicle A/C system using recovery/recycling equipment and refrigerant identi-
fier. If NG, refer to
HA-4, "Precautions For Refrigerant System Service"
.
4. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure oil discharged into the
recovery/recycling equipment.
Replace liquid tank
5 (0.2, 0.2)
Refrigerant leakage is detected
Large amount leakage
30 (1.0, 1.1)
Small amount leakage
—
Oil amount that is recycled together with refrigerant during recycle operation
α
Conditions
Oil amount to be added to A/C system
m (US fl oz, Imp fl oz)
1.
New compressor
2.
Old compressor
3.
Recovery/recycling equipment
4.
Measuring cup X
5.
Measuring cup Y
6.
New oil
A.
Drain oil from the new compressor
into clean container
B.
Record amount of oil recovered
C.
Add an additional 5 m (0.2 US fl oz,
0.2 Imp fl oz) of new oil when replacing
liquid tank
D.
Install new oil equal to recorded
amounts in measuring cups X plus Y
WJIA1716E
OIL
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5. Drain the oil from the “old” (removed) compressor into a graduated container and recover the amount of
oil drained.
6. Drain the oil from the “new” compressor into a separate, clean container.
7. Measure an amount of new oil installed equal to amount drained from “old” compressor. Add this oil to
“new” compressor through the suction port opening.
8. Measure an amount of new oil equal to the amount recovered during discharging. Add this oil to “new”
compressor through the suction port opening.
9. If the liquid tank also needs to be replaced, add an additional 5 m (0.2 US fl oz, 0.2 Imp fl oz) of oil at this
time.
CAUTION:
Do not add the 5 m (0.2 US fl oz, 0.2 Imp fl oz) of oil if only replacing the compressor and not the
liquid tank.
HA-28
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PERFORMANCE TEST
PERFORMANCE TEST
Inspection
INFOID:0000000009756306
INSPECTION PROCEDURE
1. Connect recovery/recycling/recharging equipment (for HFC-134a) or manifold gauge.
2. Start the engine, and set to the following condition.
Test condition
3. Maintain test condition until A/C system becomes stable. (Approximately 10 minutes)
4. Check that test results of “recirculating-to-discharge air temperature” and “ambient air temperature-to-
operating pressure” are within the specified value.
5. When test results are within the specified value, inspection is complete.
If any of test result is out of the specified value, perform diagnosis by gauge pressure. Refer to
.
RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE
AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE
Surrounding condition
Indoors or in the shade (in a well-ventilated place)
Vehicle condition
Door
Closed
Door glass
Full open
Hood
Open
Engine speed
Idle speed
A/C condition
Temperature control switch or dial
Full cold
A/C switch
ON
Air outlet
VENT (ventilation)
Intake door position
Recirculation
Fan (blower) speed
Maximum speed set
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature from center ventilator
°C (°F)
Relative humidity
%
Air temperature
°C (°F)
50 – 60
20 (68)
4.7 – 6.7 (40 – 44)
25 (77)
8.6 – 11.1 (47 – 52)
30 (86)
12.6 – 15.6 (55 – 60)
35 (95)
19.0 – 22.5 (66 – 73)
60 – 70
20 (68)
6.7 – 8.7 (44 – 48)
25 (77)
11.1 – 13.6 (52 – 56)
30 (86)
15.6 – 18.6 (60 – 65)
35 (95)
22.5 – 26.0 (73 – 79)
PERFORMANCE TEST
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Fresh air
High-pressure (Discharge side)
kPa (kg/cm
2
, psi)
Low-pressure (Suction side)
kPa (kg/cm
2
, psi)
Relative humidity
%
Air temperature
°C (°F)
50 – 70
25 (77)
909 – 1,112
(9.2 – 11.3, 131.8 – 161.2)
159 – 194
(1.6 – 2.0, 23.1 – 28.1)
30 (86)
1,073 -– 1,312
(10.9 – 13.4, 155.6 – 190.2)
211 – 259
(2.2 – 2.6, 30.6 – 37.6)
35 (95)
1,445 – 1,766
(14.7 – 18.0, 209.5 – 256.1)
247 – 300
(2.5 – 3.1, 35.8 – 43.5)
40 (104)
1,650 – 2,017
(16.8 – 20.6, 239.3 – 292.5)
290 – 355
(3.0 – 3.6, 42.1 – 51.5)
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