check oil INFINITI QX56 2006 Factory Service Manual

POWER STEERING OIL PUMPPS-21
C
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B
PS
Revision: November 2009 2006 QX56
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceEGS000UJ
CHECKING RELIEF OIL PRESSURE
CAUTION:
Before starting work, confirm belt tension is proper.
1. Connect Tool between oil pump discharge connector and high
pressure hose and then bleed air from the hydraulic circuit.
2. Start engine. Allow engine to run until tank temperature reaches 50 – 80 °C (122 – 176°F).
CAUTION:

Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed,
fluid pressure in power steering pump increases to maximum. This will raise fluid temperature
excessively.

Be careful not to contact hose with belt when engine is started.
3. With engine at idle, close shut-off valve and read the relief oil pressure.
CAUTION:
Do not close shut-off valve of pressure gauge for more than 10 seconds.
4. After measurement, open shut-off valve slowly.

If relief oil pressure is outside the specification, repair or replace oil pump. Refer to PS-22, "Disassem-
bly and Assembly" .
5. After inspection, disconnect oil pressure gauge and oil pressure gauge adapter from hydraulic circuit, con- nect oil pump discharge connector and high pressure hose. Add fluid and bleed air from hydraulic circuit
thoroughly. Refer to PS-6, "
Air Bleeding Hydraulic System" .
Removal and InstallationEGS000UK
REMOVAL
1. Drain power steering fluid from reservoir tank.
2. Remove engine room cover. Refer to EM-12, "
Removal and Installation" .
3. Remove air duct assembly. Refer to EM-15, "
Removal and Installation" .
4. Remove power steering reservoir tank.
5. Remove serpentine drive belt belt from auto tensioner and power steering pump. Refer to EM-13,
"Removal and Installation" .
6. Disconnect pressure sensor electrical connector.
7. Remove high pressure and low pressure piping from power steering oil pump. Refer to PS-23, "
HYDRAU-
LIC LINE" .
8. Remove mounting bolts, then remove power steering pump.
INSTALLATION
Installation is in the reverse order of removal. Refer to PS-23, "HYDRAULIC LINE" for tightening torque.

After installation, bleed air. Refer to PS-6, "Air Bleeding Hydraulic System" .
NOTE:
Belt tension is automatic and requires no adjustment.
Tool number:
Pressure gauge and shut-off valve KV48103500
(J26357 and J26357-10)
Oil pump side Connector A and
O-ring
KV48105300-4 and 5295262U10
(
— )
Eye-bolt and O-ring KV48105300-3 and 5295262U00
(
— )
High pressure
piping side Connector B and
O-ring
KV48105300-1 and 5295262U00
(
— )
Nut KV48105300-2
(
— )
Relief oil pressure
: 9.0 – 9.8 mPa (91.77 – 99.93 kg/cm2 , 1305.34 – 1421.37 psi)
SGIA0570E

PS-22
POWER STEERING OIL PUMP
Revision: November 20092006 QX56
Disassembly and AssemblyEGS00123
INSPECTION BEFORE DISASSEMBLY
Disassemble the power steering oil pump only if the following items are found.

Deformed or damaged pulley, bracket, connector or suction pipe.

Oil leakage from the suction pipe or connector.
DISASSEMBLY
NOTE:
Mount the power steering oil pump in a vise as needed.
1. Remove the connector bolt, connector and copper washers.
CAUTION:
Do not reuse the copper washers.
2. Remove the suction pipe and O-ring.
CAUTION:
Do not reuse the O-ring.
3. Remove the pulley nut and pulley.
4. Remove the bracket bolts and bracket.
INSPECTION AFTER DISASSEMBLY
Body Assembly Inspection
Check the power steering oil pump body assembly for damage. If any damage is found, replace with a new
power steering oil pump assembly.
ASSEMBLY
Assembly is in the reverse order of disassembly.
CAUTION:

Do not reuse the copper gaskets

Do not reuse the O-ring. Apply a coat of Genuine Nissan PSF or equivalent to the O-ring.
1. Bracket 2. Spring washer 3. Pulley
4. Power steering pump 5. High pressure hose bracket 6. O-ring
7. Suction pipe ⇐Front
LGIA0038E

RFD-1
REAR FINAL DRIVE
D DRIVELINE/AXLE
CONTENTS
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SECTION
A
B
RFD
Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 2
Precautions for Servicing Rear Final Drive ......... ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tools .......................................... ..... 3
Commercial Service Tools ................................... ..... 5
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 7
NVH Troubleshooting Chart ................................ ..... 7
DIFFERENTIAL GEAR OIL ................................... ..... 8
Changing Differential Gear Oil ............................ ..... 8
DRAINING ........................................................ ..... 8
FILLING ............................................................ ..... 8
Checking Differential Gear Oil ............................. ..... 8
OIL LEAKAGE AND OIL LEVEL ...................... ..... 8
FRONT OIL SEAL ................................................. ..... 9
Removal and Installation ..................................... ..... 9
REMOVAL ........................................................ ..... 9
INSTALLATION ................................................ ..... 9
SIDE OIL SEAL ..................................................... ....11
Removal and Installation ..................................... .... 11
REMOVAL ........................................................ .... 11
INSTALLATION ................................................ .... 11CARRIER COVER .................................................
... 12
Removal and Installation ..................................... ... 12
REMOVAL ........................................................ ... 12
INSTALLATION ................................................ ... 12
REAR FINAL DRIVE ASSEMBLY ......................... ... 13
Removal and Installation ..................................... ... 13
REMOVAL ........................................................ ... 13
INSTALLATION ................................................ ... 14
Disassembly and Assembly ................................. ... 15
COMPONENTS ................................................ ... 15
ASSEMBLY INSPECTION AND ADJUSTMENT ... 16
DISASSEMBLY ................................................ ... 19
INSPECTION AFTER DISASSEMBLY ............. ... 23
ADJUSTING AND SELECTING WASHERS .... ... 24
ASSEMBLY ...................................................... ... 26
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 32
General Specifications ......................................... ... 32
Inspection and Adjustment .................................. ... 32
DRIVE GEAR RUNOUT ................................... ... 32
SIDE GEAR CLEARANCE ............................... ... 32
PRELOAD TORQUE ........................................... 32
BACKLASH ...................................................... ... 32
COMPANION FLANGE RUNOUT .................... ... 32
SELECTIVE PARTS ......................................... ... 32

RFD-2
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
Precautions for Servicing Rear Final DriveEDS0044K

Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.

Check for the correct installation status prior to removal or disassembly. When matching marks are
required, be certain they do not interfere with the function of the parts they are applied to.

Overhaul should be done in a clean work area, a dust proof area is recommended.

Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from
entering into the unit during disassembly or assembly.

Always use shop paper for cleaning the inside of components.

Avoid using cotton gloves or a shop cloth to prevent the entering of lint.

Check appearance of the disassembled parts for damage, deformation, and abnormal wear. Replace
them with new ones if necessary.

Gaskets, seals and O-rings should be replaced any time the unit is disassembled.

Clean and flush the parts sufficiently and blow them dry.

Be careful not to damage sliding surfaces and mating surfaces.

When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil,
and foreign materials from the application and mating surfaces.

In principle, tighten nuts or bolts gradually in several steps working diagonally from inside to outside. If a
tightening sequence is specified, observe it.

During assembly, observe the specified tightening torque.

Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.

RFD-8
DIFFERENTIAL GEAR OIL
Revision: November 20092006 QX56
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilEDS0044O
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket from the rear final drive
assembly to drain the differential gear oil.
3. Install the drain plug with a new gasket to the rear final drive assembly. Tighten to the specified torque. Refer to RFD-15,
"COMPONENTS" .
CAUTION:
Do not reuse gasket.
FILLING
1. Remove the filler plug and gasket from the rear final drive assembly.
2. Fill the rear final drive assembly with new differential gear oil until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to RFD-15,
"COMPONENTS" .
CAUTION:
Do not reuse gasket.
Checking Differential Gear OilEDS0044P
OIL LEAKAGE AND OIL LEVEL
1. Make sure that differential gear oil is not leaking from the rear final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as shown.
CAUTION:
Do not start engine while checking differential gear oil level.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to RFD-15,
"COMPONENTS" .
CAUTION:
Do not reuse gasket.
LLIA0068E
Differential gear oil
grade and capacity : Refer to
MA-11, "Fluids
and Lubricants" .
LLIA0068E
LLIA0068E

RFD-10
FRONT OIL SEAL
Revision: November 20092006 QX56
2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the total preload torque using Tool B.

The total preload torque should be within the total preload
torque specification. When not replacing the collapsible
spacer, it should also be equal to the measurement taken dur-
ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).

If the total preload torque is low, tighten the drive pinion lock
nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total
preload torque is met.
CAUTION:

Do not reuse drive pinion lock nut.

Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.

Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to RFD-15, "
COMPONENTS" .

Do not loosen drive pinion lock nut to adjust the total preload torque. If the total preload torque
exceeds the specifications, replace the collapsible spacer and tighten it again to adjust. Refer to
RFD-15, "
Disassembly and Assembly" .

After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-
tion malfunction, and other malfunctions.
4. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to RFD-8, "
Checking Differential Gear
Oil" .
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Total preload torque: Refer to RFD-16, "
To ta l P r e l o a d
To r q u e" .
WDIA0380E

SIDE OIL SEALRFD-11
CE F
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RFD
Revision: November 2009 2006 QX56
SIDE OIL SEALPFP:33142
Removal and InstallationEDS0044R
REMOVAL
1. Remove the drive shaft from the rear final drive assembly. Refer to RAX-7, "Removal and Installation" .
2. Remove the side flange using Tools.
3. Remove the side oil seal using suitable tool. CAUTION:
Do not to damage gear carrier.
INSTALLATION
1. Apply multi-purpose grease to the lips of the new side oil seal.Then drive the new side oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:

Do not reuse side oil seal.

Do not incline the new side oil seal when installing.

Apply multi-purpose grease to the lips of the new side oil
seal.
2. Install the side flange using Tool.
a. Install the Tool to the side oil seal as shown.
b. Insert the side flange until the serrated part of the side flange has engaged the serrated part of the side gear and remove the
To o l .
c. Drive in the side flange using suitable tool. NOTE:
Installation is completed when the driving sound of the side
flange turns into a sound which seems to affect the whole rear
final drive assembly.
3. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to RFD-8, "
Checking Differential Gear
Oil" .
Tool numbers A: KV40104100 ( — )
B: ST36230000 (J-25840-A)
WDIA0115E
LDIA0109E
Tool number : ST35271000 ( — )
LDIA0111E
Tool number : KV38107900 (J-39352)
SDIA0822E

RFD-16
REAR FINAL DRIVE ASSEMBLY
Revision: November 20092006 QX56
ASSEMBLY INSPECTION AND ADJUSTMENT

Drain the differential gear oil before inspection and adjustment. Refer to RFD-8, "DIFFERENTIAL GEAR
OIL" .

Remove and install the carrier cover as necessary for inspection and adjustment. Refer to RFD-12, "CAR-
RIER COVER" .
Total Preload Torque
1. Remove the side flanges if necessary. Refer to RFD-19, "Side Flange" .
CAUTION:
The side flanges shaft must removed in order to measure total preload torque.
2. Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
4. Measure the total preload torque using Tool.
NOTE:
Total preload torque = Drive pinion bearing preload torque +
Side bearing preload torque

If the measured value is out of the specification, check and adjust each part. Adjust the drive pinion
bearing preload torque first, then adjust the side bearing preload torque.
CAUTION:
Select a side bearing adjusting washer for right and left individually.
1. Drive pinion lock nut 2. Companion flange 3. Front oil seal
4. Drive pinion front bearing 5. Collapsible spacer 6. Drive pinion rear bearing
7. Drive pinion height adjusting washer 8. Drive pinion 9. Gear carrier
10. Drive gear 11. Pinion mate shaft 12. Lock pin
13. Pinion mate gear 14. Pinion mate thrust washer 15. Side gear
16. Side gear thrust washer 17. Differential case 18. Side bearing
19. Side bearing adjusting washer 20. Bearing cap 21. Carrier cover
22. Filler plug 23. Drain plug 24. Side oil seal
Tool number : ST3127S000 (J-25765-A)
Total preload torque:
2.05 - 4.11 N·m (0.21 - 0.42 kg-m, 19 - 36 in-lb)
SPD884
If the total preload torque is greater than specificationOn drive pinion bearings: Replace the collapsible spacer.
On side bearings: Use thinner side bearing adjusting washers by the same amount on each side. Refer to RFD-33, "
Side Bearing Adjusting
Washer" .
If the total preload torque is less than specification On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Use thicker side bearing adjusting washers by the same amount on each side. Refer to RFD-33, "
Side Bearing Adjust-
ing Washer" .

REAR FINAL DRIVE ASSEMBLYRFD-27
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RFD
Revision: November 2009 2006 QX56
7. Press the drive pinion front bearing inner race to the drive pinion
as far as drive pinion lock nut can be tightened using suitable
spacer.
8. Apply multi-purpose grease to the lips of the new front oil seal. Then drive the new front oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:

Do not reuse front oil seal.

Do not incline the new front oil seal when installing.

Apply multi-purpose grease to the lips of the new front oil
seal.
9. Install the companion flange to the drive pinion while aligning the matching marks.
10. Apply anti-corrosive oil to the threads of the drive pinion and the seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the drive pinion bearing preload torque using Tool B.
CAUTION:

Do not reuse drive pinion lock nut.

Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.

Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to RFD-15, "
COMPONENTS" .

If the drive pinion bearing preload torque exceeds the
specified value, replace collapsible spacer and tighten it
again to adjust. Do not loosen drive pinion lock nut to
adjust the drive pinion bearing preload torque.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
11. Check companion flange runout. Refer to RFD-18, "
Companion Flange Runout" .
12. Install the differential case assembly. Refer to RFD-28, "
Differential Assembly" .
SPD896
Tool number : ST15310000 ( — )
PDIA0563E
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque: 1.77 - 2.64 N·m (0.18 - 0.26 kg-m, 16 - 23 in-lb)
WDIA0379E

RFD-30
REAR FINAL DRIVE ASSEMBLY
Revision: November 20092006 QX56
13. Insert the selected left and right side bearing adjusting washers
in place between the side bearings and gear carrier.
14. Install the side bearing caps with the matching marks aligned and tighten the side bearing cap bolts to the specified torque.
Refer to RFD-15, "
COMPONENTS" .
15. Check and adjust the drive gear runout, tooth contact, drive gear to drive pinion backlash, and total pre- load torque. Refer to RFD-17, "
Drive Gear Runout" , RFD-17, "Tooth Contact" , RFD-18, "Backlash" and
RFD-16, "
Total Preload Torque" .
Recheck the above items.
16. Install the side flanges. Refer to RFD-30, "
Side Flange" .
17. Apply a 3.2mm (0.126 in) bead of sealant to the mating surface of the carrier cover.

Use Genuine Silicone RTV or equivalent. Refer to GI-46,
"Recommended Chemical Products and Sealants" .
CAUTION:
Remove any old sealant adhering to the mating surfaces.
Also remove any moisture, oil, or foreign material adhering
to the application and mating surfaces.
18. Install the carrier cover to the gear carrier. Tighten the bolts to the specified torque. Refer to RFD-15, "
COMPONENTS" .
19. Install the side flange. Refer to RFD-30, "
Side Flange" .
Side Flange
1. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:

Do not reuse side oil seal.

Do not incline the new side oil seal when installing.

Apply multi-purpose grease to the lips of the new side oil
seal.
SPD924
SPD889
WDIA0282E
Tool number : ST35271000 ( — )
SPD560