2004 INFINITI QX56 fluid

TF-134
CENTER CASE
Revision: August 20072004 QX56
CONTROL VALVE

Check resistance between terminals of 4WD solenoid valve, 2-
4WD shift solenoid valve and transfer fluid temperature sensor.
Refer to TF-95, "
Component Inspection" .

Check sliding faces of control valves and plugs for abnormality.
If any is found, replace the control valve assembly with new one.
Refer to TF-154, "
Control Valve" .
CAUTION:
Replace control valve body together with clutch return
spring as a set.

Check each control valve spring for damage or distortion, and
also check its free length, outer diameter and wire diameter. If
any damage or fatigue is found, replace control valve body with
new one. Refer to TF-154, "
Control Valve" .
CAUTION:
Replace control valve body together with clutch return spring
as a set.
CLUTCH

Check drive plate facings and driven plate for damage, cracks or
other abnormality. If any abnormalities are found, replace with
new one.

Check the thickness of drive plate facings and driven plate.
Refer to TF-153, "
CLUTCH" .
CAUTION:

Measure facing thickness at 3 points to take an average.

Check all the drive and driven plates.

Check return spring for damage or deformation.

Do not remove spring from the plate
PDIA0183E
SMT947C
SMT948C
SMT949C

TF-150
ASSEMBLY
Revision: August 20072004 QX56
4. Install center case assembly to front case assembly.
CAUTION:
Pay careful attention so that mainshaft end is not damaged.
5. Tap center case lightly press-fit front drive shaft bearing into
front case, using suitable tool.
6. Tighten front case bolts to specified torque.
NOTE:
Be sure to install air breather hose clamp, connector bracket
and harness clip.
7. Remove all the gasket fluid from switch mounting area and
inside center case. With ATP switch and neutral-4LO switch
threaded in 1 to 2 pitches, apply specified sealant or equivalent
to the thread of the switches and tighten to specified torque.
Refer to GI-45, "
Recommended Chemical Products and Seal-
ants" .
8. Apply ATF or petroleum jelly to stem bleeder and install to center
case.
9. Install main oil pump assembly to the center case assembly and tighten bolts. Refer to TF-110, "
Transfer
Components" .
SDIA2138E
Front case bolts : 45 N·m (4.6 kg-m, 33 ft-lb)
SDIA2100E
ATP and Neutral- 4LO
switches: 28 N·m (2.9 kg-m, 21 ft-lb)
SDIA2096E
SDIA2097E

SERVICE DATA AND SPECIFICATIONS (SDS)
TF-153
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TF
Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEDS0031B
Inspection and AdjustmentEDS0031C
CLEARANCE BETWEEN INNER GEAR AND OUTER GEAR
Unit: mm (in)
CLUTCH
Unit: mm (in)
PINION GEAR END PLAY
Unit: mm (in)
CLEARANCE BETWEEN SHIFT FORK AND SLEEVE
Unit: mm (in)
SELECTIVE PARTS
Sub-oil Pump
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Main Oil Pump
Unit: mm (in) Applied modelVK56DE
Transfer modelATX14B
Fluid capacity (Approx.)
(US qt, lmp qt)3.0 (3-1/8, 2-5/8)
Gear ratioHigh 1.000
Low 2.596
Number of teethPlanetary
gearSun gear 57
Internal gear 91
Front drive sprocket 38
Front drive shaft 38
Item Specification
Sub-oil pump 0.015 - 0.035 (0.0006 - 0.0014)
Main oil pump 0.015 - 0.035 (0.0006 - 0.0014)
Item Limit value
Drive plate1.4 (0.055)
Item Standard
Pinion gear end play 0.1 - 0.7 (0.004 - 0.028)
Item Standard
Shift fork and sleeve Less than 0.36 (0.0142)
Gear thicknessPart number*
Inner gear Outer gear
9.27 - 9.28 (0.3650 - 0.3654) 31346 0W462 31347 0W462
9.28 - 9.29 (0.3654 - 0.3657) 31346 0W461 31347 0W461
9.29 - 9.30 (0.3657 - 0.3661) 31346 0W460 31347 0W460
Gear thicknessPart number*
Inner gear Outer gear
8.27 - 8.28 (0.3256 - 0.3260) 31346 7S112 31347 7S112
8.28 - 8.29 (0.3260 - 0.3264) 31346 7S111 31347 7S111
8.29 - 8.30 (0.3264 - 0.3268) 31346 7S110 31347 7S110

FRONT WIPER AND WASHER SYSTEM
WW-29
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WW
Revision: August 20072004 QX56
Removal and Installation of Front Wiper Arms, Adjustment of Wiper Arms Stop
Location
EKS007FH
REMOVAL
1. Operate the wiper motor, and stop it at the auto stop position.
2. Remove the wiper arm mounting covers.
3. Remove the wiper arm mounting nuts, then remove the wiper arms.
INSTALLATION
1. Prior to wiper arm installation, turn on wiper switch to operate
wiper motor and then turn it “OFF” (Auto Stop).
2. Lift the blade up and then set it down onto glass surface to set
the blade center to clearance “L1” and “L2” immediately before
tightening nut.
3. Eject washer fluid. Turn on wiper switch to operate wiper motor
and then turn it “OFF”.
4. Ensure that wiper blades stop within clearance “L1” and “L2”.

Before reinstalling wiper arm, clean up the pivot area as illus-
trated. This will reduce possibility of wiper arm looseness.

Tighten wiper arm nuts to specified torque.
Removal and Installation of Wiper Motor and Linkage EKS007FI
REMOVAL
1. Operate the wiper motor, and stop it at the auto stop position.Clearance “L1” : 41.5 - 56.5 mm (1.634 - 2.224 in)
Clearance “L2” : 52.5 - 67.5 mm (2.067 - 2.657 in)
Front wiper arm
nuts: 23.6 N·m
(2.4 kg-m, 17 ft-lb)
SEL543TA
SEL024J
LKIA0408E
1. Wiper arm mounting covers 2. Wiper arm mounting nuts 3. Front RH wiper arm and blade assembly
4. Wiper frame mounting bolts 5. Wiper frame assembly 6. Wiper motor to frame mounting bolts
7. Wiper motor mounting spacer 8. Wiper motor 9. Front LH wiper arm and blade assembly

WW-30
FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
2. Remove wiper arms from the vehicle. Refer to WW-29, "Removal and Installation of Front Wiper Arms,
Adjustment of Wiper Arms Stop Location" .
3. Remove the cowl top extension. Refer to EI-18, "
COWL TOP" .
4. Disconnect wiper motor connector.
5. Remove cowl top extension bracket.
6. Remove wiper frame assembly mounting bolts, and remove
wiper frame assembly.
7. Remove wiper motor from wiper frame assembly.
INSTALLATION
CAUTION:

Do not drop the wiper motor or cause it to contact other parts.

Check the grease conditions of the motor arm and wiper link joint(s). Apply grease if necessary.
1. Connect wiper motor to connector. Turn the wiper switch ON to operate wiper motor, then turn the wiper
switch OFF (auto stop).
2. Disconnect wiper motor connector.
3. Install wiper motor to wiper frame assembly, and install assembly into the vehicle.
4. Install cowl top extension bracket.
5. Connect wiper motor connector. Turn the wiper switch ON to operate the wiper motor, then turn wiper
switch OFF (auto stop).
6. Install cowl top extension. Refer to EI-18, "
COWL TOP" .
7. Install wiper arms. Refer to WW-29, "
Removal and Installation of Front Wiper Arms, Adjustment of Wiper
Arms Stop Location" .
Washer Nozzle Adjustment EKS007FJ

This vehicle is equipped with non-adjustable washer nozzles.

If not satisfied with washer fluid spray coverage, confirm that the
washer nozzle is installed correctly.

If the washer nozzle is installed correctly, and the washer fluid
spray coverage is not satisfactory, replace washer nozzle.
LKIA0409E
PKIA2552E

WW-32
FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
2. Remove front and rear washer motor connector, washer fluid
level sensor connector, and front and rear washer hoses.
3. Remove front washer tank screw, then remove washer tank.
INSTALLATION
CAUTION:
After installation, add water up to the upper level of the washer tank inlet, and check for water leaks.
Installation is in the reverse order of removal.
Removal and Installation of Washer Motor EKS007FN
1. Remove washer tank. Refer to WW-31, "Removal and Installation of Washer Tank" .
2. Pull out front and rear washer motor in the direction of the arrow
as shown, and remove the front and rear washer motor from the
washer tank.
CAUTION:
When installing front and rear washer motor, there should be no
packing twists, etc.
LKIA0412E
LKIA0413E
Washer tank installation screws: 5.5 N·m
(0.56 kg-m, 49 in-lb)
LKIA0414E

WW-52
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
1. Clean up the pivot area as illustrated. This will reduce possibility
of wiper arm looseness.
2. Install rear wiper motor to the vehicle.
3. Connect rear wiper motor connector.
4. Install hatch glass latch and adjust as necessary. Refer to BL-
136, "BACK DOOR LOCK" .
5. Install back door finisher lower. Refer to EI-41, "
BACK DOOR
TRIM" .
6. Attach pivot cap.
7. Attach wiper arm. Refer to WW-50, "
Removal and Installation of
Rear Wiper Arm, Adjustment of Rear Wiper Arm Stop Location"
.
Rear Washer Nozzle AdjustmentEKS007G2

This vehicle is equipped with a non-adjustable rear washer nozzle.

If not satisfied with washer fluid spray coverage, confirm that the washer nozzle is installed correctly.

If the washer nozzle is installed correctly, and the washer fluid spray coverage is not satisfactory, replace
the washer nozzle.
Rear Washer Tube LayoutEKS007G3
Removal and Installation of Rear Washer NozzleEKS007G4
REMOVAL
1. Remove the rear spoiler. Refer to EI-26, "REAR SPOILER" .
2. Remove rear washer tube from nozzle.
3. Release retaining clips, and remove washer nozzle.
INSTALLATION
Installation is in the reverse order of removal.
SEL024J
WKIA1925E
LKIA0418E

REAR WIPER AND WASHER SYSTEM
WW-53
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WW
Revision: August 20072004 QX56
Check ValveEKS007G5

A check valve is provided in the washer fluid line. Be careful not
to connect check valve to washer tube in the wrong direction.
Removal and Installation of Rear Wiper and Washer SwitchEKS007G6
Refer to WW-31, "Removal and Installation of Wiper and Washer Switch" .
Removal and Installation of Washer TankEKS007G7
Refer to WW-31, "Removal and Installation of Washer Tank" .
Removal and Installation of Washer MotorEKS007G8
Refer to WW-32, "Removal and Installation of Washer Motor" .
PKIA2546E