2008 INFINITI FX35 Service Manual

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Page 537 of 3924

INFINITI FX35 2008 Service Manual
ATC-132
< SERVICE INFORMATION >
REFRIGERANT LINES
Removal and Installation of High-pressu re Pipe 1 and 2 (Engine Compartment)
INFOID:0000000001328224
REMOVAL
1. Remove low-pressure pipe 1. Refer to

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INFINITI FX35 2008 Service Manual
REFRIGERANT LINESATC-133
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7. Disconnect one-touch joint between high-pressure pipe 2 and 3.
a. Set a disconnector (SST: 9253089908) on A/C pip

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INFINITI FX35 2008 Service Manual
ATC-134
< SERVICE INFORMATION >
REFRIGERANT LINES
6. Disconnect one-touch joints.
a. Set a disconnector [high-pressure side (SST: 9253089908), low-pressure side (SST: 9253089916)] on A/C piping.
b. S

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INFINITI FX35 2008 Service Manual
REFRIGERANT LINESATC-135
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Be sure to clean carefully.
4. Remove liquid tank and power steering oil cooler mounting bolts.
5. Lift liquid tank

Page 541 of 3924

INFINITI FX35 2008 Service Manual
ATC-136
< SERVICE INFORMATION >
REFRIGERANT LINES
5. Remove washer tank mounting bolt.
6. Remove high-pressure flexible hose bracket mounting bolt.
7. Disconnect high-pressure flexible hose and high-

Page 542 of 3924

INFINITI FX35 2008 Service Manual
REFRIGERANT LINESATC-137
< SERVICE INFORMATION >
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After piping connection is comple ted, pull male-side piping by hand to make sure that connection
does not come lo

Page 543 of 3924

INFINITI FX35 2008 Service Manual
ATC-138
< SERVICE INFORMATION >
REFRIGERANT LINES
O-rings are different from low-pressure pipe 1 (high-pressure pipe 2) and low-pressure pipe 2 (high-
pressure pipe 3).
Mark the mounting position

ATC-138
< SERVICE INFORMATION >
REFRIGERANT LINES
O-rings are different from low-pressure pipe 1 (high-pressure pipe 2) and low-pressure pipe 2 (high-
pressure pipe 3).
Mark the mounting position of intake sensor bracket prior to removal so that the reinstalled sensor
can be located in the same position.
When recharging refrigerant, check for leaks.
Removal and Installation of Expansion ValveINFOID:0000000001328230
REMOVAL
1. Remove evaporator. Refer to ATC-137, "Removal and Installation of Evaporator".
2. Remove mounting bolts, and then remove expansion valve. CAUTION:
Cap or wrap the joint of evaporator with suitable material
such as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of evaporator with new ones, and then apply compressor oil to it when installing it.
O-rings are different from low-pressure pipe 1 (h igh-pressure pipe 2) and low-pressure pipe 2 (high-
pressure pipe 3).
When recharging refrigerant, check for leaks.
Checking of Refrigerant LeaksINFOID:0000000001328231
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 ma y 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).
If dye is observed, c onfirm the leak with an electrical leak detector. It is possible a prior leak was repaired and
not properly cleaned.
When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all
system components and connections.
When searching for refrigerant leaks using an electric al leak detector, move the probe along the suspected
leak area at 1 to 2 inches per second and no further than 1/4 inch from the component.
CAUTION:
Moving the electrical leak detector probe slower and closer to the suspected leak area will improve the
chances of finding a leak.
Checking System for Leaks Using the Fluore scent Leak DetectorINFOID:0000000001328232
1. Check A/C system for leaks using the UV lamp and safety goggles (SST: J-42220) in a low sunlight area
(area without windows preferable). Illuminate all co mponents, fittings and lines. The dye will appear 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) leak.
2. If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or
cloth, with the UV lamp for dye residue.
3. After the leak is repaired, remove any residual dye using dye cleaner (SST: J-43872) to prevent future
misdiagnosis. Low-pressure pipe 1 bracket mounting bolt
: 5.5 N·m (0.56 kg-m, 49 in-lb)
RJIA1864E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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4. Perform a system performance check and verify the l eak repair with an approved electrical leak detector.
NOTE:
O

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4. Perform a system performance check and verify the l eak repair with an approved electrical leak detector.
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 can also cause false readings
and may damage the detector.
Dye InjectionINFOID:0000000001328233
(This procedure is only necessary when recharging t he 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 (3.52 kg/cm
2, 50 psi).
2. Pour one bottle (1/4 ounce / 7.4 cc) of the A/C refr igerant 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 and switch A/C ON.
5. When the A/C operating (compressor running), inject one bottle (1/4 ounce / 7.4 cc) of fluorescent dye
through the low-pressure service valve using dye inje ctor tool (SST: J-41459) (refer to the manufacture’s
operating instructions).
6. With the engine still running, disconnect the injector tool from the service valve. CAUTION:
Be careful the A/C system or replacing a componen t, pour the dye directly into the open system
connection and proceed wi th 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
leak size, operating conditions and location of the leak , it may take from minutes to days for the dye to
penetrate a leak and become visible.
8. Attach a blue label as necessary.
Electrical Leak DetectorINFOID:0000000001328234
PRECAUTIONS FOR HANDLING LEAK DETECTOR
When performing a refrigerant leak check, use an A/C electrical leak
detector (SST) or equivalent. Ensure that the instrument is calibrated
and set properly per the operating instructions.
The leak detector is a delicate device. In order to use the leak detec-
tor properly, read the operating instructions and perform any speci-
fied maintenance.
1. Position probe approximately 5 mm (3/16 in) away from point to
be checked.
SHA196FA
SHA707EA
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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