Page 2745 of 3383

PS-12
STEERING COLUMN
Revision: November 20092006 QX56
CAUTION:
When installing the steering column, finger-tighten all of the lower bracket and joint retaining
bolts; then tighten them to specification. Do not apply undue stress 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
mounting nut from front side of vehicle.
INSPECTION AFTER INSTALLATION
After installing steering column to vehicle, check tilt device operation range is within specification.
Check if steering wheel operation can turn to the end of the left
and right stops smoothly.
SST491C
Range "A" : 61.3 mm (2.41 in)
WGIA0083E
Page 2746 of 3383
STEERING COLUMNPS-13
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
Disassembly and AssemblyEGS000UG
DISASSEMBLY
1. Remove mounting bolt from upper joint, then remove upper joint from steering column assembly.
2. Remove ignition switch tamper resistant self-shear screws with a drill or other suitable tool.
1. Steering column assembly2. Upper joint3. Ignition switch
4. Tamper resistant self-shear screw
WGIA0091E
Page 2747 of 3383

PS-14
STEERING COLUMN
Revision: November 20092006 QX56
ASSEMBLY
Assembly is in the reverse order of disassembly.
Install new tamper resistant self-shear screws.
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothly, check the steering column as follows:
1. Check the column bearings for damage or unevenness. Lubricate with recommended multi-purpose
grease. Replace the steering column as an assembly, if necessary.
2. Check the column tube for deformation or breakage. Replace the steering column as an assembly, if nec- essary.
3. If the vehicle has been involved in a collision, or if noise and rat- tles are heard during a turn, check the length "L" of the column.
If out of specification, replace the steering column as an assem-
bly.
4. Check for proper lubrication, apply grease as necessary.
5. Check for wear around the seal edges, replace the steering col- umn as an assembly as necessary.
6. Check for corrosion or pitting around the seal sliding area.
WGIA0009E
Steering column length "L" : 610 mm (24.02 in)
WGIA0080E
Page 2748 of 3383

POWER STEERING GEAR AND LINKAGEPS-15
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
POWER STEERING GEAR AND LINKAGEPFP:49001
Removal and InstallationEGS000UH
CAUTION:
Spiral cable may snap due to steering operation if steering column is separated from steering gear
assembly. Therefore secure steering 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 model, remove front final drive, then support drive shafts with wire. Refer to FFD-12, "
Removal
and Installation" .
5. Remove cotter pin at steering outer socket and discard, then loosen nut.
6. Remove steering outer socket from steering knuckle using Tool. Be careful not to damage ball joint boot.
CAUTION:
Temporarily tighten mounting nut to prevent damage to
threads and to prevent Tool from coming off.
7. On 2WD model, remove stabilizer bar mounting bolts and reposition stabilizer bar. Refer to FSU-12,
"Removal and Installation" .
1. Cotter pin2. Mounting bracket3. Mounting insulator
4. Steering gear assembly 5. Washer
WGIA0127E
Tool number : HT72520000 (J-25730-A)
SDIA1434E
Page 2749 of 3383

PS-16
POWER STEERING GEAR AND LINKAGE
Revision: November 20092006 QX56
8. Remove oil piping (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from piping.
9. Remove lower joint mounting bolt of lower joint shaft.
10. 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-6,
"Front Wheel Alignment" .
After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-62,
"Adjustment of Steering Angle Sensor Neutral Position" .
With steering wheel in straight ahead position, make sure slit of
lower joint fits with the projection on rear cover cap, while check-
ing 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 PS-6, "Air Bleeding Hydraulic
System" .
LGIA0032E
LGIA0029E
LGIA0024E
SST491C
Page 2750 of 3383

POWER STEERING GEAR AND LINKAGEPS-17
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is turned several times fully to the left and right lock positions.
Disassembly and AssemblyEGS00124
CAUTION:
Secure steering gear assembly with a vise, using copper plates or something similar to prevent it
from being damaged. Do not grip cylinder with a vise.
Before performing disassembly, clean steering gear assembly with kerosene. Be careful not to
bring any kerosene into contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Loosen lock nuts of outer sockets, and remove outer sockets.
3. Remove boot clamps of the small diameter side and the large diameter side, then remove boot.
CAUTION:
When removing boots, be careful not to damage inner socket and gear housing assembly. If they
are damaged, change them to avoid oil leaks.
4. Remove inner sockets.
1. Boot clamp 2. Inner socket3. Boot
4. Boot clamp 5. Outer socket6. Cylinder tubes
7. Gear housing assembly 8. Connector
BGIA0008E
Page 2751 of 3383

PS-18
POWER STEERING GEAR AND LINKAGE
Revision: November 20092006 QX56
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for tears, cracks and deformation. Replace if necessary.
Gear Housing Assembly
Check gear housing assembly for dents, cracks or damage. Replace as an assembly if necessary.
Outer Socket and Inner Socket
SWING TORQUE
Measure the swing torque, using Tool. When ball stud and inner
socket start moving the measured value must be within the
specification. If the reading is outside the specification, replace
the socket.
ROTATING TORQUE
Measure the rotating torque, using Tool. If the value is outside
the specification, replace the outer sockets.
AXIAL END PLAY
Apply a load of 490 N (50 kg-f, 110 lb-f) to the ball stud axially.
Use a dial gauge to measure the amount of the movement that
the stud makes. If the value is outside the specification, replace
the sockets. Tool number : — (J-44372)
WGIA0131E
Item
Outer socket Inner socket
Measuring point Cotter pin hole of stud Shown as L: 83.2 mm (3.276 in)
Swing torque 0.3 − 2.9 N ·m (0.03 − 0.29 kg-m, 3 − 25 in-lb) 1.0 − 7.8 N·m (0.11 − 0.79 kg-m, 9 − 69 in-lb)
Measuring value (F) 4.84 − 46.7 N (0.50 − 4.7 kg-f, 4 - 34 lb-f) 12.1 − 93.7 N (1.3 − 9.5 kg, 9 − 69 lb)
Tool number : ST3127S000 (J-25765-A)
Rotating torque : 0.3 − 2.9 N·m (0.03 − 0.29 kg-m,
3 − 25 in-lb)
WGIA0132E
Outer socket : 0.5 mm (0.020 in) or less
Inner socket : 0.2 mm (0.008 in) or less
SGIA0057E
Page 2752 of 3383
POWER STEERING GEAR AND LINKAGEPS-19
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
ASSEMBLY
1. Install the inner sockets.
2. Install the large-diameter side of the boots to the gear housing
assembly.
3. Install the small-diameter side of the boots to the groove of the inner sockets.
4. Install the boot clamps to the boots, as shown. CAUTION:
Do not reuse the large-diameter boot clamps.
5. Crimp the large-diameter boot clamps, using Tool.
6. Install the cylinder tubes to the gear housing assembly.
7. Install the lock nuts and outer sockets to the inner sockets.
SGIA0550E
AST139
Tool number : KV40107300 ( — )
RAC1133D