INFINITI FX35 2008 Service Manual

ATC-6
< SERVICE INFORMATION >
PRECAUTIONS
 Garter spring cannot be removed from cage of male-side piping.
 Indicator ring remains near piping connection point, however, this is not a malfunction. (This is to check pip-
ing connection during factory assembly.)
REMOVAL
1. Clean piping connection point, and set a disconnector.
2. Slide disconnector in axial direction of piping, and stretch garter spring with tapered point of disconnector.
3. Slide disconnector farther so that inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then male-side piping can be disconnected.
INSTALLATION
1. Clean piping connection points, and insert male-side piping into female-side piping.
2. Push inserted male-side piping harder so that female-side piping flare stretches garter spring.
3. If inside diameter of garter spring becomes larger t han outside diameter of female-side piping flare, garter
spring seats on flare. Then, it fits in between male-side piping cage and female-side piping flare to anchor
piping connection point.
NOTE:
When garter spring seats on flare, and fits in betw een male-side piping cage and female-side piping flare,
it clicks.
CAUTION:
 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 comple ted, pull male-side piping by hand to make sure that connec-
tion does not come loose.
NOTE: One-touch joint connection is used in points below.
SJIA0106E
SJIA0107E
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PRECAUTIONSATC-7
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 Low-pressure pipe 1 to low-pressure pipe 2 (O-ring size: 16)
 High-pressure pipe 1 to high-pressure pipe 2 (O-ring size: 8)
 High-pressure pipe 2 to high-pressure pipe 3 (O-ring size: 8)
 Low-pressure flexible hose to low-pressure pipe 1 (O-ring size: 16)
 Condenser to high-pressure flexible hose (O-ring size: 12)
 Condenser to high-pressure pipe 1 (O-ring size: 8)
FEATURES OF NEW TYPE REFRIGERANT CONNECTION
 The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi- nates the possibility of the O-ring being caught in, or damaged by, the mating part. The sealing direction of
the O-ring is now set vertically in relation to the c ontacting surface of the mating part to improve sealing
characteristics.
 The reaction force of the O-ring will not occur in the dire ction that causes the joint to pull out, thereby facili-
tating piping connections.
O-RING AND REFRIGERANT CONNECTION
VQ35DE
SHA815E
SJIA1773E
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ATC-8
< SERVICE INFORMATION >
PRECAUTIONS
VK45DE
CAUTION:
The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. If a wrong O- ring is installed, refrigerant may leak at the con-
nection.
O-Ring Part Numbers and Specifications
WARNING:
Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loo sen the discharge side hose fitting and remove it.
SJIA1774E
Connection type Piping connection point Part number QTY O-ring size
New Low-pressure pipe 1 to low-pressure pipe 2 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe 2 to expansion valve 92473 N8210 1 16
High-pressure pipe 1 to high-pressure pipe 2 (One-touch joint) 92471 N8221 2 8
High-pressure pipe 3 to expansion valve 92471 N8210 1 8
High-pressure pipe 2 to high-pressure pipe 3 (One-touch joint) 92471 N8221 2 8
Condenser to high-pressure flexible hose (One-touch joint) 92472 N8221 2 12
Condenser to high-pressure pipe 1 (One-touch joint) 92471 N8221 2 8
Low-pressure flexible hose to low-pressure pipe 1 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe to low-pressure flexible hose (VK45DE) 92474 N8210 1 19
Compressor to low-pressure flexible hose (VQ35DE) 92474 N8210 1 19
Compressor to low-pressure pipe (VK45DE) 92474 N8210 1 19
Compressor to high-pressure flexible hose 92472 N8210 1 12
Liquid tank to condenser pipe
Inlet
92471 N8210 1
8
Outlet 1
Former Refrigerant pressure sensor to condenser J2476 89956 1 10
Expansion valve to evaporator
Inlet 92475 71L00 1 12
Outlet 92475 72L00 1 16
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PRECAUTIONSATC-9
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CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
 When the compressor is removed, store it in the sam e way at it is when mounted on the car. Failure
to do so will cause lubricant to enter the low-pressure chamber.
 When connecting tubes, always use a to rque wrench and a back-up wrench.
 After disconnecting tubes, immediately plug all op enings to prevent entry of dust and moisture.
 When installing an air conditioner in the vehicle, connect the pipes at the final stage of the operation.
Never remove the seal caps of pipes and other compon ents until just before required for connection.
 Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
 Thoroughly remove moisture from the refriger ation system before charging the refrigerant.
 Always replace used O-rings.
 When connecting tubes, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
 O-ring must be closely att ached to the groove of tube.
 When replacing the O-ring, be careful not to damage O-ring and tube.
 Connect tube until a click can be heard, then tighten the nut or bolt by hand. Make sure that the O-
ring is installed to tube correctly.
 After connecting line, perform leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.
Precaution for Service of CompressorINFOID:0000000001328156
 Plug all openings to prevent moisture and foreign matter from entering.
 When the compressor is removed, store it in th e same way at it is when mounted on the car.
 When replacing or repairing compressor, follow “Maintenance of Lubricant Quantity in Compressor”
exactly. Refer to ATC-22, "
Maintenance of Lubricant Quantity in Compressor".
 Keep friction surfaces between clut ch and pulley clean. If the surface is contaminated with lubricant,
wipe it off by using a clean w aste cloth moistened with thinner.
 After compressor service operation, turn the compr essor shaft by hand more than five turns in both
directions. This will equally dist ribute lubricant inside the compressor. After the compressor is
installed, let the engine idle and operate the compressor for one hour.
 After replacing the compressor magnet clutch, ap ply voltage to the new one and check for normal
operation.
Precaution for Service EquipmentINFOID:0000000001328157
RECOVERY/RECYCLING EQUIPMENT
Name : Nissan A/C System Oil Type S
RHA861F
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ATC-10
< SERVICE INFORMATION >
PRECAUTIONS
Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instruct ions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is pos sible when the pump is switched off
after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as follows.
 Usually vacuum pumps have a manual isolator valve as part of the pump. Close this valve to isolat e the service hose from the pump.
 For pumps without an isolator, use a hose equipped with a manual
shut-off valve near the pump end. Close the valve to isolate the
hose from the pump.
 If the hose has an automatic shut -off valve, disconnect the hose
from the pump. As long as the hos e is connected, the valve is open
and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
Be certain that the gauge face indicates HFC-134a or R-134a. Be
sure the gauge set has 1/2 ″-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) and specified lubricants.
SERVICE HOSES
Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut-
off devices (either manual or aut omatic) near the end of the hoses
opposite to the manifold gauge.
SERVICE COUPLERS
RHA270DA
SHA533D
RHA272D
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PRECAUTIONSATC-11
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Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. T he HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. If the scale controls
refrigerant flow electronically, the hose fitting must be 1/2
″-16 ACME.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder’s top valve
when filling the cylinder with refrigerant. Also, the accura cy of the cylinder is generally less than that of an
electrical scale or of quality recycle/recharge equipment.
Precaution for Leak Detection DyeINFOID:0000000001328158
 The A/C system contains a fluorescent leak detection dy e used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.
 Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.
 The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995). The flu-
orescent dye leak detector should be used in conjunc tion with an electrical leak detector (SST: J-41995) to
pin-point refrigerant leaks.
 For the purpose of safety and customer’s satisfacti on, read and follow all manufacture’s operating instruc-
tions and precautions prior to performing the work.
 A compressor shaft seal should not necessarily be re paired because of dye seepage. The compressor shaft
seal should only be repaired after confirming the l eak with an electrical leak detector (SST: J-41995).
 Always remove any remaining dye from the leak area after repairs are completed to avoid a misdiagnosis during a future service.
 Never allow dye to come into contact with painted body panels or interior components. If dye is spilled, clean
immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period of time
cannot be removed.
 Never spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).
 Never use more than one refrigerant dye bot tle (1/4 ounce /7.4 cc) per A/C system.
 Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use HFC-
134a (R-134a) leak detection dye in CFC-12 (R-12) A/ C system, or CFC-12 (R-12) leak detection dye in
HFC-134a (R-134a) A/C system, or A/C system damage may result.
 The fluorescent properties of the dye will remain for thr ee years or a little over unless a compressor malfunc-
tion occurs.
IDENTIFICATION
NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue label.
IDENTIFICATION LABEL FOR VEHICLE
Shut-off valve rotati on A/C service valve
Clockwise Open
Counterclockwise Close
RHA273D
RHA274D
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ATC-12
< SERVICE INFORMATION >
PRECAUTIONS
Vehicles with factory installed fluorescent dye have the identification label on the front side of hood.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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PREPARATIONATC-13
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PREPARATION
Special Service ToolINFOID:0000000001328159
The actual shapes of Kent-Moore tools may differ fr om those of special service tools illustrated here.
HFC-134a (R-134a) Service Tool and EquipmentINFOID:0000000001328160
Never mix HFC-134a (R-134a) refrigerant and/or its specif ied lubricant with CFC-12 (R-12) refrigerant and/or
its lubricant.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubri-
cant.
Tool number
(Kent-Moore No.)
Tool name Description
KV99106100
(J-41260)
Clutch disc wrench Removing shaft nut and clutch disc
KV99232340
(J-38874)
Clutch disc puller Removing clutch disc
KV99106200
(J-41261)
Pulley installer Installing pulley
9253089908
(for high-pressure pipe 1)
(-)
9253089912
(for high-pressure flexible hose)
(-)
9253089916
(for low-pressure pipe 1 and
low-pressure flexible hose)
(-)
Disconnector tool set
(J-45815) Disconnect one-touch joint connection
S-NT232
SJIA1168E
S-NT376
S-NT235
SJIA1274E
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ATC-14
< SERVICE INFORMATION >
PREPARATION
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or lubricant) are different between CF C-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and
compressor malfunction may result.
Tool number
(Kent-Moore No.)
Tool name Description
HFC-134a (R-134a) refrigerant Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size
 Large container 1/2
″-16 ACME
Nissan A/C System Oil Type S
(DH-PS) Type: Polyalkylene glycol oil (PAG),
type S (DH-PS)
Application:
HFC-134a (R-134a) wobble (swash)
plate compressors (Nissan only)
Capacity: 40 m (1.4 US fl oz., 1.4
Imp fl oz.)
(ACR2005-NI)
ACR5 A/C Service Center Function: Refrigerant recovery, recy-
cling and recharging
(J-41995)
Electrical A/C leak detector Power supply:
DC 12 V (Battery terminal)
(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce bottle
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)
(J-43872)
Refrigerant dye cleaner Power supply:
DC 12 V (Battery terminal)
S-NT196
S-NT197
WJIA0293E
AHA281A
ZHA200H
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PREPARATIONATC-15
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(J-42220)
UV lamp and UV safety goggles Power supply:
DC 12 V (Battery terminal)
For checking refrigerant leak when flu-
orescent dye is installed in A/C system
Includes:
UV lamp and UV safety goggles
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles) Application:
For HFC-134a (R-134a) PAG oil
Container:
1/4 ounce (7.4 cc) bottle
(Includes self-adhesive dye identifica-
tion labels for affixing to vehicle after
charging system with dye.)
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce bottle For injecting 1/4 ounce of fluorescent
leak detection dye into A/C system
(J-43872)
Refrigerant dye cleaner For cleaning dye spills
(J-39183)
Manifold gauge set (with hoses
and couplers) Identification:
 The gauge face indicates HFC-134a
(R-134a).
Fitting size: Thread size
1/2
″-16 ACME
Service hoses
 High-pressure side hose (J-39501-72)
 Low-pressure side hose (J-39502-72)
 Utility hose
(J-39476-72) Hose color:
 Low hose: Blue with black stripe
 High hose: Red with black stripe
 Utility hose: Yellow with black stripe
or green with black stripe
Hose fitting to gauge:
1/2
″-16 ACME
Tool number
(Kent-Moore No.)
Tool name Description
SHA438F
SHA439F
SHA440F
SHA441F
RJIA0196E
S-NT201
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