check transmission fluid INFINITI QX56 2007 Factory Owner's Guide

TRANSMISSION ASSEMBLY
AT-225
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• When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:
• When replacing an engine or transmission you must make
sure the dowels are installed correctly during re-assembly.
• Improper alignment caused by missing dowels may cause
vibration, oil leaks or breakage of drivetrain components.
• Align the positions of bolts for drive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the bolts
with the specified torque.
CAUTION:
• When turning crankshaft, turn it clockwise as viewed from the
front of the engine.
• After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that transmission rotates
freely without binding.
• Install crankshaft position sensor (POS).
• After completing installation check fluid leakage, fluid level and the
positions of A/T. Refer to AT-13, "
Checking Automatic Transmis-
sion Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "Adjustment of A/T Position".
Removal and Installation (4WD)INFOID:0000000003532482
COMPONENTS
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E
AWDIA0441GB

TRANSMISSION ASSEMBLY
AT-227
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17. Plug any openings such as the fluid charging pipe hole.
18. Remove A/T assembly to engine bolts using power tool.
19. Remove A/T assembly with transfer from vehicle.
CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to transmission jack.
20. Remove transfer from A/T assembly. Refer to TF-128, "
Removal and Installation".
INSPECTION
Installation and Inspection of Torque Converter
• After inserting a torque converter to a transmission, be sure to
check dimension A to ensure it is within specifications.
INSTALLATION
Installation of the remaining components is in the reverse order of removal, while paying attention to the fol-
lowing:
• When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:
• When replacing an engine or transmission you must make
sure the dowels are installed correctly during re-assembly.
• Improper alignment caused by missing dowels may cause
vibration, oil leaks or breakage of drivetrain components.
• Align the positions of bolts for drive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the bolts
with the specified torque.
CAUTION:
• When turning crankshaft, turn it clockwise as viewed from the
front of the engine.
• After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that transmission rotates
freely without binding.
• Install crankshaft position sensor (POS).
• After completing installation, check fluid leakage, fluid level, and
the positions of A/T. Refer to AT-13, "
Checking Automatic Trans-
mission Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "Adjustment of A/T Position". Dimension A : 24.0 mm (0.94 in) or more
SAT017B
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E

ASSEMBLY
AT-297
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17. Install the oil pan and new oil pan gasket. Refer to AT-209, "Oil Pan".
CAUTION:
• Do not reuse the oil pan gasket.
• Completely remove all moisture, oil and old gasket from the oil pan gasket mating surfaces and
holes.
• Always replace the oil pan bolts as they are self-sealing.
• Be sure the oil pan drain plug hole is located to the rear of the transmission assembly.
• Partially install the oil pan bolts in a criss-cross pattern to prevent dislocation of the gasket.
• Be careful not to pinch harnesses.
18. Install drain plug in oil pan with new gasket.
CAUTION:
Do not reuse the drain plug gasket.
19. Install torque converter.
a. Pour ATF into torque converter.
•Approximately 2 liter (2-1/8 US qt, 1-3/4 Imp qt) of fluid is
required for a new torque converter.
•When reusing old torque converter, add the same amount
of fluid as was drained.
b. Install torque converter while aligning notches of torque con-
verter with notches of oil pump.
CAUTION:
Install torque converter while rotating it.
c. Measure distance “A” to check that torque converter is in proper
position.Drain plug : 34 N·m (3.5 kg-m, 25 ft-lb)
SAT428DA
SCIA5010E
Distance “A” : 24.0 mm (0.94 in) or more
SAT017B

EM-74
< SERVICE INFORMATION >
ENGINE ASSEMBLY
ENGINE ASSEMBLY
Removal and InstallationINFOID:0000000003531544
WARNING:
• Situate vehicle on a flat and solid surface.
• Place chocks at front and back of rear wheels.
• For engines not equipped with engine slingers, attach proper slingers and bolts described in PARTS
CATALOG.
CAUTION:
• Always be careful to work safely, avoid forceful or uninstructed operations.
• Do not start working until exhaust system and engine coolant are cooled sufficiently.
• If items or work required are not covered by the engine section, refer to the applicable sections.
• Always use the support point specified for lifting.
• Use either 2-point lift type or separate type lift. If board-on type is used for unavoidable reasons,
support at the rear axle jacking point with transmission jack or similar tool before starting work, in
preparation for the backward shift of center of gravity.
• For supporting points for lifting and jacking point at rear axle, refer to GI-40, "
Garage Jack and
Safety Stand".
REMOVAL
Preparation
1. Drain the engine coolant. Refer to CO-9, "Changing Engine Coolant".
2. Partially drain the A/T fluid. Refer to AT-13, "
Changing Automatic Transmission Fluid (ATF)".
3. Release the fuel pressure. Refer to EC-80, "
Fuel Pressure Check".
4. Remove the engine hood. Refer to BL-12, "
Removal and Installation of Hood Assembly".
5. Remove the cowl extension. Refer to EI-17, "
Removal and Installation".
1. Rear engine mounting insulator 4WD 2. Rear engine mounting insulator 2WD 3. LH engine mounting bracket
4. LH heat shield plate 5. LH engine mounting insulator 6. RH engine mounting bracket
7. RH heat shield plate 8. RH engine mounting insulator
LBIA0397E

EM-76
< SERVICE INFORMATION >
ENGINE ASSEMBLY
a. Before removing the drive plate, put a match mark (A) on the
crankshaft and drive plate for alignment during installation.
b. Remove the drive plate.
• Holding the crankshaft pulley bolt, lock the crankshaft to remove the drive plate bolts.
• Loosen the bolts diagonally.
CAUTION:
• Be careful not to damage the drive plate. Especially
avoid deforming and damaging of the signal plate teeth
(circumference position).
• Place the drive plate with the signal plate surface facing
other than downward.
• Keep magnetic materials away from the signal plate.
CAUTION:
Use an engine stand that has a load capacity [approximately 240kg (529 lb) or more] large enough
for supporting the engine weight.
• If the load capacity of the stand is not adequate, remove the following parts beforehand to
reduce the potential risk of overturning the stand.
- Remove the fuel tube and fuel injector assembly. Refer to EM-31, "
Removal and Installation".
- Remove the intake manifold. Refer to EM-17, "
Removal and Installation".
- Remove the ignition coil. Refer to EM-28, "
Removal and Installation".
- Remove the rocker cover. Refer to EM-35, "
Removal and Installation".
- Other removable brackets.
CAUTION:
Before removing the hanging chains, make sure the engine stand is stable and there is no risk of
overturning.
31. Remove the generator. Refer to SC-22, "
Removal and Installation".
32. Remove the engine mounting insulator and bracket using power tool.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• When replacing an engine or transmission you must make sure the dowels are installed correctly
during re-assembly.
• Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of driv-
etrain components.
INSPECTION AFTER INSTALLATION
• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to MA-10, "
Fluids and Lubricants".
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel
leakage at the connection points.
ALBIA0522ZZ
KBIA2491E

ENGINE ASSEMBLY
EM-77
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• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.
• Summary of the inspection items:
*Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gas — Leakage —

IDX-2
ALPHABETICAL INDEX
Numerics
2-4WD shift solenoid valve ..... TF-93
, TF-154, TF-167
4WD - Wiring diagram ....................................... TF-24
4WD shift switch ................................................ TF-65
4WD solenoid valve ................ TF-89, TF-154, TF-167
4WD system description .................................... TF-15
4WD system diagram ........................................ TF-19
A
A/C air flow ...................................................... ATC-30
A/C compressor clutch removal and installation .. ATC-
180
A/C compressor mounting ............................. ATC-179
A/C compressor precaution ............................. ATC-11
A/C compressor special service tool ................ ATC-14
A/C control operation (auto A/C) ...................... ATC-27
A/C diagnostic work flow (auto A/C) .............. ATC-133
A/C evaporator ............................................... ATC-186
A/C HFC134a (R134a) system identification ..... ATC-6
A/C HFC134a (R134a) system precaution ........ ATC-5
A/C HFC134a (R134a) system service procedure ATC-
175
A/C HFC134a (R134a) system service tools ... ATC-14
A/C HFC134a system service equipment precaution ...
ATC-11
A/C lubricant (R134a) ...................................... ATC-22
A/C lubrication oil ............................................. ATC-22
A/C operational check ....................... ATC-56, ATC-58
A/C self-diagnoses (auto A/C) ........ ATC-54, ATC-133
A/C service data specification ........................ ATC-193
A/C trouble diagnoses (auto A/C) .................... ATC-34
A/C, A - Wiring diagram ................................... ATC-42
A/T fluid checking ...................... AT-12, AT-51, MA-22
A/T fluid cooler cleaning .................................... AT-14
A/T fluid replacement ............................. AT-12, MA-24
A/T fluid temperature sensor ........................... AT-123
A/T IND - Wiring diagram .................................... DI-36
A/T indicator ........................................................ DI-36
A/T shift lock system ........................................ AT-216
A/T trouble diagnoses ........................................ AT-42
ABS - Wiring diagram ..................................... BRC-16
ABS (anti-lock brake system) ........................... BRC-7
Accelerator control system ............................... ACC-3
Accelerator pedal position (APP) sensor . EC-608, EC-
614, EC-628
Accelerator pedal released position learning ..... EC-80
AF1B1-Wiring diagram EC-242, EC-250, EC-258, EC-
267, EC-638
AF1B2-Wiring diagram EC-244, EC-252, EC-260, EC-
269, EC-640
AF1HB1-Wiring diagram .................................. EC-175
AF1HB2-Wiring diagram .................................. EC-177
Aiming adjustment .................................. LT-23, LT-61
Air bag .............................................................. SRS-3
Air bag precautions .............................................. AV-4
Air cleaner and air duct ..................................... EM-15
Air cleaner filter replacement ................ EM-16, MA-16
Air conditioner cut control ................................. EC-29
Air flow meter - See Mass air flow sensor EC-197, EC-
206
Air fuel ratio sensor 1 .. EC-239, EC-248, EC-256, EC-
264, EC-636
Air fuel ratio sensor 1 heater ........................... EC-174
Air mix. door motor .......................................... ATC-69
Ambient sensor ............................. ATC-138, ATC-149
Angular tightening application ............................. EM-4
Antenna .............................................................. AV-58
APPS1 - Wiring diagram ................................. EC-610
APPS2 - Wiring diagram ................................. EC-616
APPS3 - Wiring diagram ................................. EC-630
ASC/BS - Wiring diagram ............................... EC-574
ASC/SW - Wiring diagram .............................. EC-557
ASCBOF - Wiring diagram .............................. EC-648
ASCD ................................................................ EC-30
ASCD (automatic speed control device) ........... ACS-3
ASCD brake switch ........................... EC-572, EC-647
ASCD indicator lamp ....................................... EC-654
ASCD steering switch ..................................... EC-555
ASCIND - Wiring diagram ............................... EC-655
ATP switch ............................ TF-106, TF-109, TF-114
Audio .................................................................... AV-6
AUDIO - Wiring diagram .................................... AV-11
AUT/DP - Wiring diagram .................................. SE-16
Auto air conditioner - Wiring diagram .............. ATC-42
Auto anti-dazzling inside mirror ........... GW-69, GW-70
Autolamp ............................................................ LT-38
Automatic amplifier ......................................... ATC-59
Automatic drive positioner .................................. SE-11
Automatic transmission number .......................... GI-50
B
Back door ........................................................... BL-88
Back door trim ..................................................... EI-32
Back sonar .......................................................... DI-50
BACK/L - Wiring diagram ................................... LT-87
Back-up lamp ..................................................... LT-87
Ball joint (front) ................................................ FSU-15
Basic inspection ................................................ EC-73
Battery ................................................................. SC-4
Battery current sensor . EC-520, EC-527, EC-534, EC-
541
Battery/Starting/Charging System Tester SC-6, SC-12,
SC-20
BCM (Body control module) ................ BCS-3, AV-106
Block heater ...................................................... EM-78
Blower motor ................................... ATC-93, ATC-153
Body alignment ................................................ BL-164
Body component parts ..................................... BL-151
Body construction ............................................ BL-163
Body exterior paint color .................................. BL-150
Body mounting ................................................. BL-149
Body repair ....................................................... BL-150
Body sealing .................................................... BL-160
Bose speaker amp. .............................................. AV-8
Brake booster .................................................... BR-17

MA-1
MAINTENANCE
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SECTION MA
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CONTENTS
MAINTENANCE
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
GENERAL MAINTENANCE ................................4
General Maintenance ................................................4
PERIODIC MAINTENANCE ................................6
Introduction of Periodic Maintenance ........................6
Maintenance for Off-road Driving (4WD only) ...........6
Schedule 1 ................................................................6
Schedule 2 ................................................................8
RECOMMENDED FLUIDS AND LUBRI-
CANTS ................................................................
10
Fluids and Lubricants ..............................................10
SAE Viscosity Number ............................................10
ENGINE MAINTENANCE ...................................12
Checking Drive Belts ...............................................12
Changing Engine Coolant .......................................12
Checking Fuel Line .................................................15
Changing Fuel Filter ................................................15
Changing Engine Air Cleaner Filter .........................15
Changing Engine Oil ................................................16
Changing Oil Filter ...................................................16
Changing Spark Plugs .............................................18
Checking EVAP Vapor Line .....................................19
CHASSIS AND BODY MAINTENANCE ...........20
Changing In-cabin Microfilter ...................................20
Checking Exhaust System .......................................21
Checking Automatic Transmission Fluid (ATF) .......21
Changing Automatic Transmission Fluid (ATF) .......23
Changing Transfer Fluid ..........................................23
Checking Transfer Fluid ..........................................24
Checking Propeller Shaft .........................................24
Checking Final Drive Oil ..........................................24
Changing Final Drive Oil ..........................................25
Balancing Wheels ....................................................25
Tire Rotation ............................................................27
Checking Brake Fluid Level and Leaks ...................27
CheckingBrake Line and Cables .............................27
Checking Disc Brake ...............................................27
Checking Steering Gear and Linkage ......................28
Checking Power Steering Fluid and Line ................28
Checking Axle and Suspension Parts .....................29
Lubricating Locks, Hinges and Hood Latches .........30
Checking Seat Belts, Buckles, Retractors, An-
chors and Adjusters .................................................
30

CHASSIS AND BODY MAINTENANCE
MA-21
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6. Install the lower glove box in the instrument panel and secure it
with the two hinge pins.
Checking Exhaust SystemINFOID:0000000003533876
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage, loose connections, chafing or deterioration.
Checking Automatic Transmission Fluid (ATF)INFOID:0000000003533877
1. Remove the ATF level gauge bolt.
2. Before driving, the ATF level can be checked at ATF tempera-
tures of 30° to 50°C (86° to 122°F) using the “COLD” range on
the ATF level gauge as follows:
a. Park the vehicle on a level surface and set the parking brake.
b. Start the engine and move the selector lever through each gear
position. Shift the selector lever into the “P” position.
c. Check the ATF level with the engine idling.
d. Remove the ATF level gauge and wipe it clean with a lint-free
paper.
CAUTION:
When wiping the ATF from the ATF level gauge, always use
a lint-free paper, not a cloth.
e. Re-insert the ATF level gauge into the charging pipe until the
cap contacts the top of the charging pipe as shown.
CAUTION:
To check ATF level, insert the ATF level gauge until the cap
contacts the top of the charging pipe, with the gauge
reversed from the normal inserted position.
f. Remove the ATF level gauge and note the ATF level. If the ATF
level is at low side of range, add ATF to the transmission
through the charging pipe.
CAUTION:
Do not overfill the transmission with ATF.
g. Install the ATF level gauge and the ATF level gauge bolt.
3. Warm up the engine.
4. Check for any ATF leaks.
WLIA0027E
SMA211A
WLIA0014E
ATF level gauge bolt : Refer to AT-228, "Component" .
SCIA1684E

CHASSIS AND BODY MAINTENANCE
MA-23
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10. Tighten the level gauge bolt to specification.
Changing Automatic Transmission Fluid (ATF)INFOID:0000000003533878
1. Drive the vehicle to warm up the ATF to 80° C (176° F).
2. Stop the engine.
3. Remove the ATF level gauge bolt.
4. Drain the ATF from the drain plug hole and then install the drain
plug with a new gasket. Refill the transmission with new ATF.
Always refill with the same volume as the drained ATF. Use the
ATF level gauge to check the ATF level as shown. Add ATF as
necessary.
• To flush out the old ATF from the coolers, pour new ATF into the charging pipe with the engine idling and
at the same time drain the old ATF from the auxiliary transmission oil cooler hose return line.
• When the color of the ATF coming out of the auxiliary transmission oil cooler hose return line is about
the same as the color of the new ATF, flushing out the old ATF is complete. The amount of new trans-
mission ATF used for flushing should be 30% to 50% increase of the specified capacity.
CAUTION:
• Use only the specified ATF. Do not mix with other fluids.
• Using an ATF other than the specified ATF will cause deterioration in driveability and automatic
transmission durability, and may damage the automatic transmission, which is not covered by
the warranty.
• When filling the transmission with ATF, do not spill the ATF on any heat generating parts such as
the exhaust manifold.
• Do not reuse the drain plug gasket.
5. Install the ATF level gauge in the ATF charging pipe and tighten the level gauge bolt to specification.
6. Drive the vehicle to warm up the ATF to 80° C (176° F).
7. Check the ATF level and condition. Refer to AT-13, "
Checking Automatic Transmission Fluid (ATF)". If the
ATF is still dirty, repeat steps 2 through 5.
Changing Transfer FluidINFOID:0000000003533879
DRAINING
1. Stop the engine.Level gauge bolt: : Refer to AT-228, "
Component" .
Drain plug : Refer to AT-228, "
Component" .
WLIA0014E
ATF type and capacity : Refer to MA-10, "Fluids and Lubricants" .
Drain plug : Refer to AT-228, "
Component" .
Level gauge bolt : Refer to AT-228, "
Component".