INFINITI QX4 2005 Factory Service Manual

MA-18
ENGINE MAINTENANCE
Revision: October 20052005 QX56
2. Apply engine oil to the oil seal circumference of the new oil filter.
3. Screw the oil filter manually until it touches the installation sur-
face, then tighten it by 2/3 turn. Or tighten to specification.
4. Inspect the engine for oil leakage.
5. Install the engine front undercover using power tool.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level.
2. Start the engine and check for engine oil leakage.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and add engine oil as required.
Changing Spark PlugsELS001BW
SM A01 0
Oil filter : 17.7 N·m (1.8 kg-m, 13 ft-lb)
SM A22 9B
SM A95 4C
1. Ignition coil 2. Spark plug
KBIA2505E

ENGINE MAINTENANCE
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REMOVAL
1. Disconnect the harness connector from the ignition coil.
2. Remove the ignition coil. Refer to EM-26, "
IGNITION COIL" .
3. Remove the spark plug(s) using a suitable tool.
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as:

Frequent engine starts

Low ambient temperatures
The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under condi-
tions such as:

Extended highway driving

Frequent high engine revolution
Spark Plug Types
CAUTION:

Do not drop or shock spark plug.

Do not use a wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may be used.
SEM 29 4A
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (nominal)1.1 mm (0.043 in)
SM A77 3C
Cleaner air pressure
: Less than 588 kPa (5.9 bar, 6 kg/cm2 , 85 psi)
Cleaning time : Less than 20 seconds

MA-20
ENGINE MAINTENANCE
Revision: October 20052005 QX56

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Installation is in the reverse order of removal.
Checking EVAP Vapor LinesELS001BX
1. Visually inspect the EVAP vapor lines for improper attachment, cracks, damage, loose connections, chaf-
ing, or deterioration.
2. Inspect the vacuum relief valve of the fuel tank filler cap for clogging and sticking. Refer to EC-37, "
How to
Detect Fuel Vapor Leakage" .
SM A80 6CA

CHASSIS AND BODY MAINTENANCE
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CHASSIS AND BODY MAINTENANCEPFP:00100
Changing In-cabin MicrofilterELS001UY
1. Remove the two lower glove box hinge pins to remove the glove
box from the instrument panel and let it hang from the cord.
2. Remove the screw and remove the in-cabin microfilter cover.
3. Remove the in-cabin microfilters from the front heater and cool-
ing unit assembly housing.
4. Insert the first new in-cabin microfilter into the front heater and
cooling unit assembly housing and slide it over to the right.
Insert the second new in-cabin microfilter into the front heater
and cooling unit assembly housing.
NOTE:
The in-cabin microfilters are marked with air flow arrows. The
end of the microfilter with the arrow should face the rear of the
vehicle. The arrows should point downward.
5. Install the in-cabin microfilter cover.
WLIA0027E
LJIA0134E
LJIA0148E
LJIA0134E

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CHASSIS AND BODY MAINTENANCE
Revision: October 20052005 QX56
6. Install the lower glove box in the instrument panel and secure it
with the two hinge pins.
Checking Exhaust SystemELS001BZ
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage, loose connections, chafing or deterioration.
Checking A/T FluidELS001C0
1. Warm up the engine.
2. Check for any fluid leaks.
3. Remove the tightening bolt for the ATF level gauge.
4. Before driving, the fluid level can be checked at fluid 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 fluid level with the engine idling.
d. Remove the ATF level gauge and wipe it clean with a lint-free
paper.
CAUTION:
When wiping the fluid 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 fluid 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 fluid level. If the fluid
level is at low side of range, add fluid to the transmission
through the charging pipe.
CAUTION:
Do not overfill the transmission with fluid.
5. Drive vehicle for approximately 5 minutes in urban areas.
WLIA0027E
SM A211 A
WLIA0014E
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6. Drive the vehicle for at least five minutes or until the fluid temperature reaches approximately 65°C
(149°F).Use the CONSULT-II to monitor the fluid temperature as follows:
NOTE:
Fluid level will be greatly affected by temperature as shown. Therefore monitor the fluid temperature data
using the CONSULT-II.
a. Connect CONSULT-II to data link connector.
b. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
c. Read out the value of “ATF TEMP 1”.
7. Re-check the fluid level at fluid temperatures of approximately
65°C (149°F) using the “HOT” range on the A/T fluid level gauge
as shown.
CAUTION:

When wiping the fluid from the ATF level gauge, always
use lint-free paper, not a cloth.

To check the fluid 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 as
shown.
8. Check the fluid condition.

If the fluid is very dark or smells burned, there may be an
internal problem with the transmission. Refer to AT - 4 1 ,
"TROUBLE DIAGNOSIS" . Flush the transmission cooling
system after repairing the transmission.

If the ATF contains frictional material (clutches, bands, etc.),
replace the radiator and flush the transmission cooler lines
using cleaning solvent and compressed air after repairing the
transmission.
9. Install the ATF level gauge in the fluid charging pipe and install the level gauge bolt. Tighten the level
gauge bolt to specification.
SLIA0016E
WLIA0014E
Level gauge bolt : Refer to AT-250, "Components" .
SCIA1684E

MA-24
CHASSIS AND BODY MAINTENANCE
Revision: October 20052005 QX56
Changing A/T FluidELS001C1
1. Run the engine to warm up the ATF.
2. Stop the engine.
3. Remove the bolt for the ATF level gauge.
4. Drain the ATF from the drain plug hole and refill the transmission
with new ATF. Always refill same volume with drained fluid and
use the dipstick to check the fluid level as shown. Add fluid as
necessary.

To flush out the old fluid from the coolers, pour new fluid into the charging pipe with the engine idling
and at the same time drain the old fluid from the auxiliary transmission oil cooler hose return line.

When the color of the fluid coming out of the auxiliary transmission oil cooler hose return line is about
the same as the color of the new fluid, flushing out the old fluid is complete. The amount of new trans-
mission fluid used for flushing should be 30% to 50% of the specified capacity.
CAUTION:

Use only Genuine NISSAN ATF Matic Fluid J. Do not mix with other fluid.

Using automatic transmission fluid other than Genuine NISSAN ATF Matic Fluid J will cause
deterioration in driveability and automatic transmission durability, and may damage the auto-
matic transmission, which is not covered by the warranty.

When filling the transmission with fluid, do not spill the ATF on any heat generating parts such
as the exhaust manifold.
5. Check the fluid level and condition. Refer to MA-22, "
Checking A/T Fluid" . If the fluid is still dirty, repeat
steps 2 through 5.
6. Install the ATF level gauge in the fluid charging pipe and install the level gauge bolt. Tighten the level
gauge bolt to specification.
Changing Transfer FluidELS001H0
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket to drain the transfer fluid as
shown.
3. Install the new gasket on the drain plug and install the drain plug
in the transfer. Tighten the drain plug to specification.
CAUTION:
Do not reuse the gasket.
WLIA0014E
Transmission fluid type and capacity : Refer to MA-11, "Fluids and Lubricants" .
Drain plug : Refer to AT-250, "
Components" .
Level gauge bolt : Refer to AT-250, "
Components" .
Drain plug : Refer to TF-144, "
COMPONENTS" .
SM A44 4B

CHASSIS AND BODY MAINTENANCE
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FILLING
1. Remove the filler plug and gasket. Fill with new specified fluid
until the fluid level reaches the specified limit near the filler plug
mounting hole as shown.
CAUTION:
Carefully fill the transfer with fluid. Filling should take
approximately three minutes.
2. Leave the vehicle for three minutes and then check the fluid
level again as shown.
3. Install the new gasket on the filler plug and install the filler plug
in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Transfer FluidELS001H1
FLUID LEAKAGE AND FLUID LEVEL
1. Check for any fluid leaks from the transfer assembly or around it and correct as necessary.
2. Remove the filler plug to check the fluid level at the filler plug
mounting hole as shown.
CAUTION:
Do not start the engine while checking the fluid level.
3. Install the new gasket on the filler plug and install the filler plug
in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Propeller ShaftELS001C5
Check the front and rear propeller shafts for damage, dents, and cracks. Check the joints for looseness and
any damage. Repair or replace as necessary.
Checking Final Drive OilELS001H3
1. Remove the filler plug.
2. Check the oil level as shown. Add the specified oil as necessary.
NOTE:
Rear final drive shown, front final drive similar
3. Install the filler plug and tighten to specification.
Changing Final Drive OilELS001C7
1. Remove the filler plug.Fluid capacity and grade : Refer to MA-11, "
Fluids
and Lubricants" .
Filler plug : Refer to TF-144, "
COMPONENTS" .
SM A43 9B
Filler plug : Refer to TF-144, "COMPONENTS" .
SM A43 9B
Oil grade and viscosity : Refer to MA-11, "Fluids and
Lubricants" .
LLIA0068E
Filler plug : Refer to FFD-13, "COMPONENTS"
(FFD), RFD-12, "
Components" (RFD).

MA-26
CHASSIS AND BODY MAINTENANCE
Revision: October 20052005 QX56
2. Remove the drain plug and drain the final drive oil.
3. Apply sealant to the drain plug threads.

Use High Performance Thread Sealant or equivalent. Refer to GI-45, "Recommended Chemical Prod-
ucts and Sealants" .
4. Install the drain plug and tighten to specification.
5. Refill the rear final drive with new specified oil.
6. Check the oil level.
NOTE:
Rear final drive shown, front final drive similar
7. Install the filler plug and tighten to specification.
Balancing WheelsELS001H4
REMOVAL
1. Using releasing agent, remove double-faced adhesive tape from the wheel.
CAUTION:

Be careful not to scratch the wheel during removal.

After removing double-faced adhesive tape, wipe clean traces of releasing agent from the
wheel.
WHEEL BALANCE ADJUSTMENT

If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting,
select and adjust a drive-in weight mode suitable for wheels.
1. Set wheel on wheel balancer using the center hole as a guide. Start the tire balance machine.
2. When inner and outer imbalance values are shown on the wheel balancer indicator, multiply outer imbal-
ance value by 1.6 to determine balance weight that should be used. Select the outer balance weight with
a value closest to the calculated value and install it to the designated outer position of, or at the desig-
nated angle in relation to the road wheel.
CAUTION:

Do not install the inner balance weight before installing the outer balance weight.

Before installing the balance weight, be sure to clean the mating surface of the wheel.
Indicated imbalance value × 5/3 = balance weight to be installed
Calculation example:
23 g (0.81 oz) × 5/3 = 38.33 g (1.35 oz) = 40 g (1.41 oz) balance
weight (closer to calculated balance weight value)
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
37.4 g = 35 g (1.23 oz)
37.5 g = 40 g (1.41 oz)Drain plug : Refer to FFD-13, "
COMPONENTS" (FFD), RFD-12, "Components"
(RFD).
Oil grade and capacity : Refer to MA-11, "
Fluids and Lubricants" .
Filler plug : Refer to FFD-13, "
COMPONENTS"
(FFD), RFD-12, "
Components" (RFD).
LLIA0068E
SM A05 4D

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a. Install balance weight in the position shown.
b. When installing balance weight to wheels, set it into the grooved
area on the inner wall of the wheel as shown so that the balance
weight center is aligned with the wheel balancer indication posi-
tion (angle).
CAUTION:

Always use Genuine NISSAN adhesion balance weights.

Balance weights are not reusable; always replace with
new ones.

Do not install more than three sheets of balance weights.
c. If calculated balance weight value exceeds 50 g (1.76 oz), install
two balance weight sheets in line with each other as shown.
CAUTION:
Do not install one balance weight sheet on top of another.
3. Start wheel balancer again.
4. Install drive-in balance weight on inner side of road wheel in the wheel balancer indication position
(angle).
CAUTION:
Do not install more than two balance weights.
5. Start wheel balancer. Make sure that inner and outer residual imbalance values are 5 g (0.18 oz) each or
below.
Wheel Balance (Maximum Allowable Imbalance)

If either residual imbalance value exceeds 5 g (0.18 oz), repeat installation procedures.
WDIA0060E
SM A05 6D
Maximum allowable imbalanceDynamic (At rim flange) 5 g (0.18 oz) (one side)
Static 10 g (0.35 oz)