2008 INFINITI QX56 steering

TILT SYSTEMST-19
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TILT SYSTEM
Removal and InstallationINFOID:0000000004920099
TILT MOTOR AND TILT SENSOR
Removal
1. Remove the lower driver instrument panel. Refer to IP-14, "Removal and Installation".
2. Disconnect the sonar switch.
3. Disconnect adjustable pedal switch.
4. Remove steering column cover
5. Disconnect the tilt sensor electrical connector.
6. Remove knee protector.
7. Remove the two tilt sensor screws and the tilt sensor.
8. Disconnect the tilt motor electrical connector.
9. Remove the tilt motor bolt and the tilt motor.
Installation
Installation is in reverse order of removal.
NOTE:
Make sure the tab in the tilt sensor is engaged in the bracket on the tilt motor.
AWGIA0086GB
1. Tilt sensor 2. Tilt motor
LGIA0026E
Revision: March 2010 2008 QX56

ST-20
< REMOVAL AND INSTALLATION >
STEERING COLUMN
STEERING COLUMN
Removal and InstallationINFOID:0000000004920100
CAUTION:
• Any time the ignition switch has been disconnected, removed or installed, the keys must be re-regis-
tered in the BCM. Refer to Consult-III operations IVIS/NVIS.
• Do not exert any load or impact in the axial dir ection immediately before or after column removal.
• Do not to move steering gear during removal of steering column assembly.
REMOVAL
1. Remove combination switch and spiral cable from steering column assembly. Refer to SR-7, "Removal
and Installation".
2. Remove the tilt motor and tilt sensor. Refer to ST-19, "
Removal and Installation".
3. Remove steering column cover. Refer to IP-14, "
Removal and Installation".
1. Driver air bag module2. Steering wheel3. Steering wheel side cover
4. Combination switch and spiral cable 5. Steering column assembly 6. Collar
7. Hole cover seal 8. Clamp9. Hole cover mounting plate
10. Hole cover 11. Upper joint12. Upper shaft
13. Boot clamp 14. Lower joint shaft15. Boot and clips (plastic)
WGIA0139E
Revision: March 2010 2008 QX56

STEERING COLUMNST-21
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4. Remove lock nut and bolt, then separate upper shaft from upper joint.
5. Remove two nuts and two bolts, then remove steering column assembly from steering member.
6. Remove hole cover seal and clamp.
7. Remove mounting nuts, then remove hole cover from dash panel.
8. Raise vehicle, then remove mounting bolt (lower side) of lower joint shaft and remove lower joint shaft and upper shaft as an
assembly.
INSPECTION AFTER REMOVAL
• Check for damage to steering column jacket tube. If damage is found, replace steering column with new
one.
• If vehicle has been in a collision, check column length L, “L
1 and “L2 as shown. If out of specification, replace
steering column with new one.
LGIA0027E
LGIA0028E
LGIA0029E
Steering column length
L : 610 mm (24.02 in)
L
1: 158 mm (6.22 in)
L
2: 262 mm (10.31 in)
WGIA0080E
Revision: March 2010 2008 QX56

ST-22
< REMOVAL AND INSTALLATION >
STEERING COLUMN
• Check for proper lubrication, apply grease as necessary.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• When installing the steering column, finger-tighten all of the lower bracket and joint retaining bolts;
then tighten them to specifi cation. Do not apply undue st ress to the steering column.
• The lower nut on the upper joint may not be reused.
NOTE:
Align slit of the coupling joint with projection on dust cover. Insert the
joint until surface "A" contacts surface "B".
• After installation, turn steering wheel to make sure it moves smoothly. Make sure the number of turns are the same from the
straight-forward position to left and right locks. Make sure that the
steering wheel is in a neutral position when driving straight ahead.
• When installing steering column to steering member, install mount- ing nut from front side of vehicle.
INSPECTION AFTER INSTALLATION
• After installing steering column to vehicle, chec k tilt device operation range is within specification.
• Check if steering wheel operation can turn to the end of the left and right stops smoothly.
SGIA0475E
SST491C
Range "A" : 61.3 mm (2.41 in)
: 3° per notch at 5 steps
WGIA0083E
Revision: March 2010 2008 QX56

POWER STEERING GEAR AND LINKAGEST-23
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POWER STEERING GEAR AND LINKAGE
Removal and InstallationINFOID:0000000004920101
CAUTION:
Spiral cable may snap due to steering operation if steering column is separated from steering gear
assembly. Therefore secure steer ing wheel to avoid turning.
REMOVAL
1. Turn wheels to the straight-ahead position.
2. Remove tires from vehicle using power tool.
3. Remove undercover using power tool.
4. On 4WD models, remove front final drive, then support drive shafts with wire. Refer to DLN-212,
"Removal and Installation".
5. Make sure slit of lower joint fits with the projection on rear cover cap, while checking that mark on steering gear assembly aligns
with mark on rear cover cap.
6. Remove cotter pin at steering outer socket and discard, then loosen nut.
1. Cotter pin 2. Mounting bracket 3. Mounting insulator
4. Steering gear assembly 5. Washer
WGIA0127E
SST491C
Revision: March 2010 2008 QX56

ST-24
< REMOVAL AND INSTALLATION >
POWER STEERING GEAR AND LINKAGE
7. Remove steering outer socket from steering knuckle using Tool.Be careful not to damage ball joint boot.
CAUTION:
Temporarily tighten nut to prevent damage to threads and
to prevent Tool from coming off.
8. On 2WD models, remove stabilizer bolts then reposition stabilizer bar. Refer to FSU-16, "
Removal and
Installation".
9. Remove oil piping (high pressure side and low pressure side) from steering gear assembly, then drain fluid from piping.
10. Remove lower joint bolt of lower joint shaft.
11. Remove nuts of steering gear assembly using power tool, then remove bolts and steering gear assembly.
INSTALLATION
Installation is in the reverse order of removal.
• After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-7, "
Front
Wheel Alignment".
• After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-8, "
ADJUST-
MENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement".
Tool number : HT72520000 (J-25730-A)
WGIA0130E
LGIA0032E
LGIA0029E
LGIA0024E
Revision: March 2010
2008 QX56

POWER STEERING GEAR AND LINKAGEST-25
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• With steering wheel in straight ahead position, make sure slit of lower joint "A" fits with the projection on rear cover cap "B", while
checking that mark on steering gear assembly aligns with mark on
rear cover cap
• After installation, bleed the air from the steering hydraulic system. Refer to ST-13, "
Air Bleeding Hydraulic
System".
INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is turned several times fully to the left and right lock positions.
SST491C
Revision: March 2010 2008 QX56

ST-26
< REMOVAL AND INSTALLATION >
POWER STEERING OIL PUMP
POWER STEERING OIL PUMP
Removal and InstallationINFOID:0000000004920102
REMOVAL
1. Drain power steering fluid from reservoir tank.
2. Remove engine room cover. Refer to EM-24, "
Removal and Installation".
3. Remove air duct assembly. Refer to EM-25, "
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 ST-27
.
8. Remove bolts, then remove power steering pump.
INSTALLATION
Installation is in the reverse order of removal. Refer to ST-27 for tightening torque.
• After installation, bleed air. Refer to ST-13, "
Air Bleeding Hydraulic System".
NOTE:
Belt tension is automatic and requires no adjustment.
Revision: March 2010 2008 QX56