2007 INFINITI M35 charging

ATC-162
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
13. Remove mounting bolt, and then remove low-pressure pipe 1
and high-pressure pipe 2.
CAUTION:
Cap or wrap the joint of expansion valve with suitable mate-
rial such as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Replace O-rings of low-pressure flexible hose, low-pressure pipe 1 and high-pressure pipe 1, 2
with new ones, and then apply compressor oil to it when installing it.

Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

Insert piping securely until a click is heard.

After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.

When recharging refrigerant, check for leaks.
RJIA4171E
Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)

ATC-164
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
INSTALLATION
Install liquid tank, and then install liquid tank bracket on condenser.
CAUTION:

Make sure liquid tank bracket is securely installed at protru-
sion of condenser. (Make sure liquid tank bracket does not
move to a position below center of liquid tank.)

Replace O-rings of liquid tank pipe (inside pipe and outside
pipe) with new ones, and then apply compressor oil to it
when installing it.

When recharging refrigerant, check for leaks.
Removal and Installation of CondenserNJS000HU
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove engine cover. Refer to EM-15, "
ENGINE ROOM COVER" (VQ35DE) or EM-173, "ENGINE
ROOM COVER" (VK45DE).
3. Remove air cleaner case, air hose and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT"
(VQ35DE) or EM-177, "AIR CLEANER AND AIR DUCT" (VK45DE).
4. Remove front grille. Refer to EI-16, "
FRONT GRILLE" .
5. Remove radiator fan shroud with cooling fan (VK45DE). Refer to CO-51, "
COOLING FAN" .
6. Remove mounting clips and bolts, and then remove bracket.
7. Remove radiator upper mount, move radiator and condenser to
the engine side.
8. Remove mounting bolt from high-pressure flexible hose bracket.
9. Remove high-pressure pipe1 from vehicle clip.
10. Disconnect high-pressure flexible hose from condenser.
a. Set a disconnector (SST: 9253089912) on A/C piping.
b. Slide a disconnector backward until it clicks.
c. Slide A/C piping backward and disconnect it.
CAUTION:
Cap or wrap the joint of condenser and high-pressure flexi-
ble hose with suitable material such as vinyl tape to avoid
the entry of air.
RJIA1441E
RJIA4173E
RJIA4174E
RJIA4164E

ATC-166
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Replace O-rings of high-pressure pipe 1 and high-pressure flexible hose with new ones, and then
apply compressor oil to it when installing it.

Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

Insert piping securely until a click is heard.

After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.

When recharging refrigerant, check for leaks.
Removal and Installation of Refrigerant Pressure SensorNJS000HV
REMOVAL
1. Remove liquid tank. Refer to ATC-163, "Removal and Installation of Liquid Tank" .
2. Using a vice, secure liquid tank, and remove refrigerant pres-
sure sensor.
CAUTION:
Be careful not to damage liquid tank.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Apply compressor oil to O-ring of refrigerant pressure sensor when installing it.

When recharging refrigerant, check for leaks.
RJIA2148E

REFRIGERANT LINES
ATC-167
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Revision: 2007 April2007 M35/M45
Removal and Installation of EvaporatorNJS000HW
REMOVAL
1. Remove low-pressure pipe 1 and high-pressure pipe 2. Refer to ATC-161, "Removal and Installation of
Low-pressure Pipe 1 and High-pressure Pipe 2" .
CAUTION:
Cap or wrap the joint of evaporator, low-pressure flexible hose and high-pressure pipe 1 with suit-
able material such as vinyl tape to avoid the entry of air.
2. Slide evaporator, and then remove it from heater & cooling unit
assembly.
3. Remove intake sensor from evaporator, and then remove evap-
orator.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Replace O-rings of low-pressure flexible hose, low-pressure pipe 1 and high-pressure pipe 1, 2
with new ones, and then apply compressor oil to it when installing it.

Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

Insert piping securely until a click is heard.

After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.

O-rings are different from low-pressure flexible hose (high-pressure pipe 1) and low-pressure pipe
1 (high-pressure pipe 2).

Mark the mounting position of intake sensor bracket prior to removal so that the reinstalled sen-
sor can be located in the same position.

When recharging refrigerant, check for leaks.
RJIA4103E
Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)

ATC-168
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
Removal and Installation of Expansion ValveNJS000HX
REMOVAL
1. Remove evaporator. Refer to ATC-167, "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 flexible hose (high-pressure pipe 1) and low-pressure pipe
1 (high-pressure pipe 2).

When recharging refrigerant, check for leaks.
RJIA1864E

REFRIGERANT LINES
ATC-169
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Revision: 2007 April2007 M35/M45
Checking for Refrigerant LeaksNJS000HY
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).
If dye is observed, confirm 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 electrical 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 Fluorescent Leak DetectorNJS000HZ
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 components, 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.
4. Perform a system performance check and verify the leak 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 InjectionNJS000I0
(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 (3.52 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 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 injector 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 component, pour the dye directly into the open system
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
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.

ATC-172
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
11. Before connecting recovery/recycling recharging equipment to vehicle, check recovery/recycling recharg-
ing equipment gauges. No refrigerant pressure should be displayed. If pressure is displayed, recover
refrigerant from equipment lines and then check refrigerant purity.
12. Confirm refrigerant purity in supply tank using recovery/recycling recharging equipment and refrigerant
identifier.
13. Confirm refrigerant purity in vehicle A/C system using recovery/recycling recharging equipment and refrig-
erant identifier.
14. Discharge A/C system using approved refrigerant recovery equipment. Repair the leaking fitting or com-
ponent if necessary.
15. Evacuate and recharge A/C system and perform the leak test to confirm no refrigerant leaks.
16. Perform A/C performance test to ensure system works properly.

WATER OUTLET AND WATER PIPING
CO-31
[VQ35DE]
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Revision: 2007 April2007 M35/M45
WATER OUTLET AND WATER PIPINGPFP:11060
ComponentsNBS004R5
Removal and InstallationNBS004R6
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-15, "ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-21, "
INTAKE MANIFOLD COLLECTOR" .
3. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-19, "
AIR CLEANER AND AIR DUCT"
.
4. Remove front engine undercover with power tool.
5. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the
front of cylinder block. Refer to CO-11, "
Changing Engine Coolant" and CO-24, "WATER PUMP" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
6. Remove radiator hose (upper) and heater hose.
7. Remove the following parts, when remove water outlet.

A/T fluid charging pipe: Refer to AT- 2 7 4 , "TRANSMISSION ASSEMBLY" .

Intake manifold collectors (upper and lower): Refer to EM-21, "INTAKE MANIFOLD COLLECTOR" .

Rocker cover (right bank): Refer to EM-53, "ROCKER COVER" .
8. Remove engine coolant temperature sensor as necessary.
CAUTION:
Be careful not to damage engine coolant temperature sensor.
1. Harness bracket 2. Water hose 3. Water bypass hose
4. Engine coolant temperature sensor 5. Gasket 6. Water outlet
7. Heater hose 8. Water pipe 9. Radiator hose (upper)
10. Heater pipe 11. Washer 12. O-ring
SBIA0484E