2008 NISSAN TEANA Service Manual

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NISSAN TEANA 2008 Service Manual HA-32
< ON-VEHICLE MAINTENANCE >
FLUORESCENT LEAK DETECTOR
FLUORESCENT LEAK DETECTOR
InspectionINFOID:0000000003795981
CHECKING SYSTEM FOR LEAKAGES USING THE FLUORESCENT LEAK DETECTOR
1. Check A/C sys

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< ON-VEHICLE MAINTENANCE >
FLUORESCENT LEAK DETECTOR
FLUORESCENT LEAK DETECTOR
InspectionINFOID:0000000003795981
CHECKING SYSTEM FOR LEAKAGES USING THE FLUORESCENT LEAK DETECTOR
1. Check A/C system for leakages using the UV lamp and safety goggles (SST: J-42220) in a low sunlight
area (area without windows preferable). Illuminate all components, fittings and lines. The dye appears as
a bright green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain open-
ing indicates an evaporator core assembly (tubes, core or expansion valve) leakage.
2. Use an adjustable mirror or wipe the area with a clean shop rag or cloth, with the UV lamp for dye residue
if the suspected area is difficult to see.
3. Remove any residual dye using dye cleaner (SST: J-43872) to prevent future misdiagnosis after the leak-
age is repaired.
4. Perform a system performance check and verify the leakage repair with an approved electrical leak detec-
tor.
NOTE:
Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield
washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be
checked are clean.
Clean with a dry cloth or blow off with shop air.
Do not allow the sensor tip of the detector to contact with any substance. This may also cause false readings
and may damage the detector.
DYE INJECTION
(This procedure is only necessary when recharging the system or when the compressor has seized and was
replaced.)
1. Check A/C system static (at rest) pressure. Pressure must be at least 345 kPa (3.45 bar, 3.52 kg/cm
2, 50
psi).
2. Pour one bottle (1/4 ounce / 7.4 cc) of the A/C refrigerant dye into the injector tool (SST: J-41459).
3. Connect the injector tool to the A/C low-pressure side service valve.
4. Start the engine. Then switch A/C ON.
5. Inject one bottle (1/4 ounce / 7.4 cc) of fluorescent dye through the low-pressure service valve using dye
injector tool (SST: J-41459) (refer to the manufacture’s operating instructions) when the A/C operating
(compressor running).
6. Disconnect the injector tool from the service valve with the engine still running.
CAUTION:
Be careful when replacing the A/C system or a component, pour the dye directly into the open sys-
tem connection and proceed with the service procedures.
7. Operate the A/C system for a minimum of 20 minutes to mix the dye with the system oil. Depending on the
leakage size, operating conditions and location of the leakage, it may take from minutes to days for the
dye to penetrate a leakage and become visible.
8. Attach a blue label if necessary.

Page 2602 of 5121

NISSAN TEANA 2008 Service Manual ELECTRICAL LEAK DETECTOR
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ELECTRICAL LEAK DETECTOR
InspectionINFOID:0000000003795982
PRECAUTIONS FOR HANDLING LEAK DETECTOR
Use an elect

Page 2603 of 5121

NISSAN TEANA 2008 Service Manual HA-34
< ON-VEHICLE MAINTENANCE >
ELECTRICAL LEAK DETECTOR
2. Connect a suitable A/C manifold gauge set (SST) to the A/C service valves.
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.

HA-34
< ON-VEHICLE MAINTENANCE >
ELECTRICAL LEAK DETECTOR
2. Connect a suitable A/C manifold gauge set (SST) to the A/C service valves.
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.45 bar, 3.52 kg/cm
2, 50 psi) above 16°C
(61°F). Recover/evacuate and recharge the system with the specified amount of refrigerant if less than
specification.
NOTE:
Leakages may not be detected since the system may not reach 345 kPa (3.45 bar, 3.52 kg/cm
2, 50 psi) at
temperatures below 16°C (61°F).
4. Perform the leakage test from the high-pressure side (compressor discharge “a” to evaporator inlet “j”) to
the low-pressure side (evaporator drain hose “k” to shaft seal “p”). Perform a leakage check for the follow-
ing areas carefully. Clean the component to be checked and move the leakage detected probe completely
around the connection/component.
Compressor
Check the fitting of high- and low-pressure flexible hoses, relief valve and shaft seal.
Condenser
Check the fitting of condenser pipe assembly, high-pressure flexible hose and pipe.
Liquid tank
Check the fitting of condenser and refrigerant pressure sensor.
Service valves
Check all around the service valves. Ensure service valve caps are secured on the service valves (to pre-
vent leakages).
NOTE:
Wipe any residue from valves to prevent any false readings by leak detector after removing manifold
gauge set (SST) from service valves.
Cooling unit (Evaporator)
Turn blower fan on “High” for at least 15 seconds to dissipate any refrigerant trace in the cooling unit with
engine OFF. Wait a minimum of 10 minutes accumulation time (refer to the manufacturer’s recommended
procedure for actual wait time) before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. Verify at least once by blowing compressed air into area of suspected leakage, then repeat check as out-
lined above if a leak detector detects a leakage.
6. Do not stop when one leakage is found. Continue checking for additional leakages at all system compo-
nents.
JPIIA0988GB

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NISSAN TEANA 2008 Service Manual ELECTRICAL LEAK DETECTOR
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If no leakages are found, perform steps 7 - 10.
7. Start the engine.
8. Set the A/C control as per the followi

Page 2605 of 5121

NISSAN TEANA 2008 Service Manual HA-36
< ON-VEHICLE REPAIR >
COMPRESSOR
ON-VEHICLE REPAIR
COMPRESSOR
Exploded ViewINFOID:0000000003839902
Removal and InstallationINFOID:0000000003839903
REMOVAL
1. Use refrigerant collecting equipment

Page 2606 of 5121

NISSAN TEANA 2008 Service Manual COMPRESSOR
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9. Disconnect the connector (A) and remove the harness clip (B)
from compressor.
10. Remove mounting bolts (A), and then move oi

Page 2607 of 5121

NISSAN TEANA 2008 Service Manual HA-38
< ON-VEHICLE REPAIR >
LOW-PRESSURE FLEXIBLE HOSE
LOW-PRESSURE FLEXIBLE HOSE
Exploded ViewINFOID:0000000003858210
Refer to HA-14, "Refrigerant Connection".
Removal and InstallationINFOID:00000000

Page 2608 of 5121

NISSAN TEANA 2008 Service Manual LOW-PRESSURE FLEXIBLE HOSE
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4. Remove mounting bolt (A), and then disconnect low-pressure
flexible hose (1) from compressor.
CAUTION:
Cap or

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