Air INFINITI QX56 2010 Factory Service Manual

REPAIR FOR COMPONENT PARTSTM-235
< DISASSEMBLY AND ASSEMBLY >
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b. Remove 1st one-way clutch from rear sun gear.
5. Remove seal rings from mid sun gear.
INSPECTION
High and Low Reverse Clutch Hub Snap Ring, Rear Sun Gear Snap Ring
• Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
1st One-way Clutch
• Check frictional surface for wear or damage.CAUTION:
If necessary, replace the 1st one-way clutch.
Mid Sun Gear
• Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the mid sun gear.
Rear Sun Gear
• Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the rear sun gear.
High and Low Reverse Clutch Hub
• Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the high and low reverse clutch hub.
ASSEMBLY
SCIA4633E
SCIA2861E
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TM-236
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
1. Install new seal rings to mid sun gear.CAUTION:
• Do not reuse seal rings.
• Apply petroleum jelly to seal rings.
2. Install 1st one-way clutch to rear sun gear. CAUTION:
Apply petroleum jelly to 1st one-way clutch.
3. Install snap ring to rear sun gear using suitable tool.
4. Install rear sun gear assembly to mid sun gear assembly.
5. Install needle bearing to high and low reverse clutch hub. CAUTION:
• Take care with the direction of needle bearing. Refer to
TM-201, "
Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings".
• Apply petroleum jelly to needle bearing.
SCIA2861E
SCIA4633E
SCIA2859E
SCIA2858E
SCIA2857E
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REPAIR FOR COMPONENT PARTSTM-237
< DISASSEMBLY AND ASSEMBLY >
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6. Install high and low reverse clutch hub to mid sun gear assem- bly.
7. Install snap ring to mid sun gear assembly using suitable tool. CAUTION:
Do not expand snap ring excessively.
8. Check operation of 1st one-way clutch.
a. Hold mid sun gear and turn rear sun gear.
b. Check 1st one-way clutch for correct locking and unlocking directions.
CAUTION:
If not as shown, check installa tion direction of 1st one-way
clutch.
9. Install needle bearing and bearing races to high and low reverse clutch hub.
CAUTION:
• Apply petroleum jelly to needle bearing and bearingraces.
• Take care with order of bearing races.
High and Low Reverse ClutchINFOID:0000000005148753
COMPONENTS
SCIA2856E
SCIA2855E
SCIA3132E
SCIA5238E
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TM-238
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
DISASSEMBLY
1. Remove bearing race from high and low reverse clutch drum.
2. Remove snap ring from high and low reverse clutch drum usingsuitable tool.
3. Remove drive plates, driven plates and retaining plate from high and low reverse clutch drum.
INSPECTION
•Check the following, and re place high and low reverse clutch assembly if necessary.
High and Low Reverse Clutch Snap Ring
• Check for deformation, fatigue or damage.
High and Low Reverse Clutch Drive Plates
• Check facing for burns, cracks or damage.
High and Low Reverse Clutch Retaining Plate and Driven Plates
• Check facing for burns, cracks or damage.
ASSEMBLY
1. High and low reverse clutch drum 2. Driven plate 3. Retaining plate
4. Snap ring 5. Drive plate6. Bearing race
SCIA5239E
SCIA5240E
SCIA2868E
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REPAIR FOR COMPONENT PARTSTM-239
< DISASSEMBLY AND ASSEMBLY >
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1. Install drive plates, driven plates and retaining plate in high and low reverse clutch drum.
CAUTION:
Take care with the order of plates.
2. Install snap ring in high and low reverse clutch drum using suit- able tool.
3. Install bearing race to high and low reverse clutch drum. CAUTION:
Apply petroleum jelly to bearing race.
Direct ClutchINFOID:0000000005148754
COMPONENTS
SCIA5241E
SCIA2868E
SCIA5240E
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TM-240
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
DISASSEMBLY
1. Remove snap rings from direct clutch drum using suitable tool.
2. Remove drive plates, driven plates and retaining plate fromdirect clutch drum.
INSPECTION
•Check the following, and replace direct clutch assembly if necessary.
Direct Clutch Snap Rings
• Check for deformation, fatigue or damage.
Direct Clutch Drive Plates
• Check facing for burns, cracks or damage.
Direct Clutch Retaining Plate and Driven Plates
• Check facing for burns, cracks or damage.
ASSEMBLY
1. Direct clutch drum 2. Driven plate 3. Retaining plate
4. Snap ring 5. Drive plate
SCIA5242E
SCIA2868E
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REPAIR FOR COMPONENT PARTSTM-241
< DISASSEMBLY AND ASSEMBLY >
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1. Install drive plates, driven plates and retaining plate in direct clutch drum.
CAUTION:
Take care with the order of plates.
2. Install snap rings in direct clutch drum using suitable tool.
SCIA5243E
SCIA2868E
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VTL-1
VENTILATION, HEATER & AIR CONDITIONER
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SECTION VTL
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CONTENTS
VENTILATION SYSTEM
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Working with HFC-134a (R-134a) ......3
Precaution for Procedure without Cowl Top Cover ......3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Commercial Service Tool .................................... ......4
FUNCTION DIAGNOSIS ...............................5
IN-CABIN MICROFILTER .............................. .....5
Description .......................................................... ......5
ON-VEHICLE MAINTENANCE .....................6
IN-CABIN MICROFILTER .............................. .....6
Removal and Installation ...........................................6
ON-VEHICLE REPAIR .... ..............................7
CONTROL UNIT ..................................................7
Removal and Installation ...........................................7
IN-VEHICLE SENSOR ................................... .....9
Removal and Installation ...........................................9
OPTICAL SENSOR ........................................ ....10
Removal and Installation .........................................10
INTAKE SENSOR ..............................................11
Removal and Installation .........................................11
BLOWER MOTOR .......................................... ....12
Component .......................................................... ....12
Removal and Installation .........................................12
VARIABLE BLOWER CONTROL .....................14
Components ............................................................14
Removal and Installation .........................................15
HEATER & COOLING UNIT ASSEMBLY ........16
Component ..............................................................16
Removal and Installation .........................................17
EVAPORATOR .................................................19
Removal and Installation for Front Evaporator ........19
Removal and Installation for Rear Evaporator .........20
EXPANSION VALVE .........................................22
Removal and Installation for Rear Expansion
Valve .................................................................... ....
22
HEATER CORE .................................................23
Component ..............................................................23
Removal and Installation .........................................24
DEFROSTER DOOR MOTOR ..........................26
Removal and Installation .........................................26
INTAKE DOOR MOTOR ...................................27
Removal and Installation .........................................27
MODE DOOR MOTOR ......................................28
Components ............................................................28
Removal and Installation .........................................29
AIR MIX DOOR MOTOR ...................................30
Component ..............................................................30
Removal and Installation .........................................31
DUCTS AND GRILLES .....................................33
Component ..............................................................33
Removal and Installation .........................................36
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VTL-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005403098
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005403099
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
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PRECAUTIONSVTL-3
< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Working with HFC-134a (R-134a)INFOID:0000000005147600
WARNING:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refr igerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer to HA-4, "
Contaminated Refrigerant". To deter-
mine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use recovery/recycling equip-
ment and refrigerant identifier.
• Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. If
oil other than that specified is used, compressor fa ilure is likely to occur.
• The specified HFC-134a (R-134a) oil rapidly absorb s moisture from the atmosphere. The following
handling precautions must be observed:
- When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of mois ture from the atmosphere.
- When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just
before connecting the co mponents. Connect all refrigerant lo op components as quickly as possible
to minimize the entry of moisture into system.
- Only use the specified oil from a sealed container. Immediately r eseal containers of oil. Without
proper sealing, oil will become moisture saturat ed and should not be used.
- Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) from the A/C system usi ng certified service equipment meeting require-
ments of SAE J2210 [HFC-134a (R-134a) recycling eq uipment], or J2209 [HFC-134a (R-134a) recovery
equipment]. If accidental system discharge occurs , ventilate work area before resuming service.
Additional health and safety information may be ob tained from refrigerant and oil manufacturers.
- Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.
Precaution for Procedur e without Cowl Top CoverINFOID:0000000005147601
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
PIIB3706J
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