2009 INFINITI QX56 steering

ST-26
< REMOVAL AND INSTALLATION >
POWER STEERING OIL PUMP
POWER STEERING OIL PUMP
Removal and InstallationINFOID:0000000004187597
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: December 20092009 QX56

HYDRAULIC LINEST-27
< REMOVAL AND INSTALLATION >
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HYDRAULIC LINE
Removal and InstallationINFOID:0000000004187598
Refer to the following illustration for hydraulic line removal.
Installation is in the reverse order of removal.
1. Reservoir tank 2. Suction hose 3. High pressure hose
4. Oil cooler 5. Steering gear assembly 6. Reservoir tank bracket
7. Eye bolt 8. O-rings Front
AWGIA0115GB
Revision: December 20092009 QX56

ST-28
< REMOVAL AND INSTALLATION >
HYDRAULIC LINE
 Confirm mating marks are aligned with hose and clamp, then cor-rect if needed.
 To install eye joint, align projection of eye joint with notch of power steering pump, and attach eye joint to power steering pump prop-
erly. Tighten eye bolt by hand fully, then torque to specification.
SGIA0563E
WGIA0089E
Revision: December 20092009 QX56

STEERING COLUMNST-29
< DISASSEMBLY AND ASSEMBLY >
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DISASSEMBLY AND ASSEMBLY
STEERING COLUMN
Disassembly and AssemblyINFOID:0000000004187599
DISASSEMBLY
1. Remove bolt from upper joint, then remove upper joint from steering column assembly.
2. Remove ignition switch tamper resistant self-s hear screws with a drill or other suitable tool.
ASSEMBLY
 Assembly is in the reverse order of disassembly.
 Install new tamper resistant self-shear screws.
CAUTION:
Any time the ignition switch has been disconnected, removed
or installed, the keys must be re -registered in the BCM. Refer to
CONSULT-III operation manual IVIS/NVIS.
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothl y, check the steering column as follows:
1. Steering column assembly 2. Upper joint 3. Ignition switch
4. Tamper resistant self-shear screw
WGIA0091E
WGIA0009E
Revision: December 20092009 QX56

ST-30
< DISASSEMBLY AND ASSEMBLY >
STEERING COLUMN
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. R eplace 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 column as an assembly as necessary.
6. Check for corrosion or pitting around the seal sliding area.
7. Replace the seal and shaft in case of seal edge wear or damage.
8. After installing the steering column, check the tilt mechanism for proper operation.
CAUTION:
WGIA0080E
Steering column length "L"
L: Refer to ST-36,
"Steering Column"
L1: Refer to ST-36,
"Steering Column"
L2: Refer to ST-36,
"Steering Column"
Range "A" : Refer to ST-36, "Steer-
ing Column"
SGIA0475E
WGIA0083E
WGIA0026E
Revision: December 20092009 QX56

STEERING COLUMNST-31
< DISASSEMBLY AND ASSEMBLY >
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 Do not exert any load in the axi al direction immediately before or after column removal.
 After installation, check smoo th steering wheel rotation, without any catches or noise.
Revision: December 20092009 QX56

ST-32
< DISASSEMBLY AND ASSEMBLY >
POWER STEERING GEAR AND LINKAGE
POWER STEERING GEAR AND LINKAGE
Disassembly and AssemblyINFOID:0000000004187600
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 si de 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.
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for tears, cracks and def ormation. Replace if necessary.
1. Boot clamp 2. Inner socket 3. Boot
4. Boot clamp 5. Outer socket 6. Cylinder tubes
7. Gear housing assembly 8. Connector
AWGIA0116GB
Revision: December 20092009 QX56

POWER STEERING GEAR AND LINKAGEST-33
< DISASSEMBLY AND ASSEMBLY >
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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 suitable 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. Refer to
ST-37, "Steering Outer Socket and Inner Socket"
.
ROTATING TORQUE
 Measure the rotating torque, using Tool. If the value is outside the specification, replace the outer sockets. Refer to ST-37, "Steering
Outer Socket and Inner Socket"
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 sock-
ets. Refer to ST-37, "Steering Outer Socket and Inner Socket"
.
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.Tool number : ST3127S000 (J-25765-A)
WGIA0132E
SGIA0057E
SGIA0550E
Revision: December 20092009 QX56