Page 2881 of 3383
RSU-42
STABILIZER BAR
Revision: November 20092006 QX56
STABILIZER BARPFP:56230
Removal and Installation EES001HN
REMOVAL
1. Disconnect the stabilizer bar ends from the connecting rods
using power tool.
2. Remove the stabilizer bar clamps using power tool, and remove the stabilizer bar bushings.
3. Remove the stabilizer bar.
INSPECTION AFTER REMOVAL
Check the stabilizer bar for any deformation, cracks, or damage and replace if necessary.
Check the rubber bushings for deterioration, or cracks and replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.
Tighten the nuts and bolts to specification. Refer to RSU-26, "Components" .
Install the stabilizer bar with the ball joint sockets properly
aligned.
Install the stabilizer bar bushing and clamp so they are posi-
tioned inside of the sideslip prevention clamp on the stabilizer
bar.
LEIA0088E
LEIA0089E
SFA449BB
Page 2882 of 3383

REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLYRSU-43
C
DF
G H
I
J
K L
M A
B
RSU
Revision: November 2009 2006 QX56
REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLYPFP:53400
Removal and InstallationEES001HP
Rear Load Leveling Air Suspension System
REMOVAL
1. Use CONSULT-II "EXHAUST SOLENOID" active test to release the air pressure from the rear load level-
ing air suspension system.
2. Disconnect the electrical connectors for the rear load leveling air suspension compressor assembly.
3. Unclip the rubber cover to access the rear load leveling air suspension compressor assembly.
4. Disconnect the rear load leveling air suspension hoses at the rear load leveling air suspension compressor assembly.
To disconnect the hoses, push in on the lock ring using a suit-
able tool and pull the hose out.
LEIA0072E
1. Rear load leveling air suspension
hose, RH 2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension hose, LH 5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly
LEIA0074E
Page 2883 of 3383
RSU-44
REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY
Revision: November 20092006 QX56
5. Remove the four bolts that mount the rear load leveling air sus-
pension compressor assembly to the underbody.
INSTALLATION
Installation is in the reverse order of removal.
To connect the rear load leveling air suspension hoses, the lock
ring must be fully seated in the fitting. Insert the hose “B” into the
lock ring “A” until the lock ring “A” is touching the hose “B” as
shown. Pull on the hose to check that it is securely inserted.
LEIA0090E
LEIA0078E
Page 2884 of 3383
HEIGHT SENSORRSU-45
C
DF
G H
I
J
K L
M A
B
RSU
Revision: November 2009 2006 QX56
HEIGHT SENSORPFP:53820
Removal and InstallationEES001HQ
Rear Load Leveling Air Suspension System
REMOVAL
1. Use CONSULT-II “EXHAUST SOLENOID ” active test to release the air pressure from the rear load level-
ing air suspension system.
2. Disconnect the electrical connector for the height sensor.
3. Remove the two height sensor bolts and height sensor arm bracket bolt.
4. Remove the height sensor.
LEIA0072E
1. Rear load leveling air suspension hose, RH 2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension hose, LH 5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly
LEIA0080E
Page 2885 of 3383
RSU-46
HEIGHT SENSOR
Revision: November 20092006 QX56
INSTALLATION
Installation is in the reverse order of removal.
1. Start the engine.
2. Use CONSULT-II to perform "STANDARD HEIGHT LEVEL" work support function.
3. Using data monitor of CONSULT-II, verify "HEIGT CALC" is at 0 mm.
4. Check the vehicle height. Refer to RSU-49, "
Wheelarch Height (Unladen*1 )" . If vehicle height is not
within ± 10 mm (0 ± 0.39 in) of the specification, perform the initialization procedure. Refer to RSU-47,
"Initialization Procedure" .
Page 2886 of 3383

CONTROL UNITRSU-47
C
DF
G H
I
J
K L
M A
B
RSU
Revision: November 2009 2006 QX56
CONTROL UNITPFP:47850
Removal and InstallationEES001HR
REMOVAL
1. Remove the rear LH interior trim panel. Refer to EI-35, "BODY SIDE TRIM" .
2. Disconnect the battery negative terminal.
3. Disconnect the suspension control unit electrical connector.
4. Remove the two bolts and remove the suspension control unit.
INSTALLATION
Installation is in the reverse order of removal.
Initialization ProcedureEES001HS
1. If control unit has been replaced, proceed to step 2. If control unit has not been replaced, use CONSULT- II “CLEAR HEIGHT INI ” work support function to clear initialization flag and value. The CK SUSP warning
lamp should illuminate. Using CONSULT-II “EXHAUST SOLENOID” active test, release the air pressure
from the rear load leveling air suspension system.
2. Roll vehicle forward and backward.
3. Use CONSULT-II “ADJUST HEIGHT INI ” work support function to set initialization condition.
4. Confirm that CK SUSP warning lamp is OFF.
LEIA0100E
Suspension control unit bolts : 6 N·m (0.6 kg-m, 53 in-lb)
Page 2887 of 3383
RSU-48
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: November 20092006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Wheel AlignmentEES001HT
Ball JointEES001HU
Camber
Degree minute (decimal degree)Minimum
0° 0 ′ (0 °)
Nominal - 0° 30 ′ (-0.5 °)
Maximum - 1° 0 ′ (-1.0 °)
Cross camber 0° 45′ (0.75 °)
Toe-in Distance (A - B)
Minimum
0 mm (0 in)
Nominal 3.3 mm (0.130 in)
Maximum 6.6 mm (0.260 in)
Cross toe 2 mm (0.079 in)
Angle (left, right)
Degree minute (decimal degree) Minimum
0° 0 ′ (0 °)
Nominal 0° 7 ′ (0.11 °)
Maximum 0° 14′ (0.22 °)
Cross toe 0° 8 ′ (0.14 °)
SFA234AC
Swinging force (measurement point: cotter pin hole of ball stud) “A ” 11.4 - 145.5 N (1.16 - 14.8 kg, 2.56 - 32.7 lb)
Turning torque “B ” 0.5 - 6.4 N·m (0.06 - 0.65 kg-m, 5 - 56 in-lb)
Vertical end play “C ” 0 mm (0 in)
SFA858A
Page 2888 of 3383
SERVICE DATA AND SPECIFICATIONS (SDS)RSU-49
C
DF
G H
I
J
K L
M A
B
RSU
Revision: November 2009 2006 QX56
Wheelarch Height (Unladen*1 )EES001HV
Unit: mm (in)
*1: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
*2: Verify the vehicle height. If vehicle height is not within ± 10 mm (0.39 in) of the specification, perform the control unit initialization pro-
cedure. Refer to RSU-47, "
Initialization Procedure" .
Suspension type
Air leveling*
2
Applied model2WD 4WD
Front wheelarch height (Hf) 913
(35.94) 931
(36.65)
Rear wheelarch height (Hr) 912
(35.91) 932
(36.69)
LEIA0085E