Nissan Pathfinder (2008 year). Manual — part 578
STEERING COLUMN
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When installing the steering column, finger-tighten all of the lower bracket and joint bolts; then tighten
them to specification. Do not apply undue stress to the steering column.
NOTE:
• With the wheels in the straight ahead position, align the slit of the
lower joint with the projection on the dust cover. Insert the joint until
surface "A" contacts surface "B".
• After installation, inspect the steering column for proper operation.
Refer to "INSPECTION AFTER INSTALLATION".
INSPECTION AFTER INSTALLATION
• Check the tilt device for proper tilt range.
• Check that the steering wheel turns smoothly to the left and right
locks.
• Check that the number of turns are the same from the straight-for-
ward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driv-
ing straight ahead.
SST491C
Tilt range "A"
: 73.8 mm (2.906 in)
WGIA0083E
ST-20
< REMOVAL AND INSTALLATION >
STEERING COLUMN
Disassembly and Assembly
INFOID:0000000001297920
DISASSEMBLY
1.
Remove the bolt from the upper joint, then remove the upper joint from the steering column assembly.
2.
Remove the ignition switch tamper resistant self-shear screws, using a drill.
3.
Remove the ignition switch from the steering column.
ASSEMBLY
Assembly is in the reverse order of disassembly.
NOTE:
Install new tamper resistant self-shear screws.
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothly, check as follows:
1.
Check the steering column for the following:
• Damage to the column tube or bearings
1.
Steering column assembly
2.
Upper joint
3.
Ignition switch
4.
Self-shear screw
WGIA0126E
WGIA0009E
STEERING COLUMN
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• Wear around the seal edges
• Corrosion or pitting around the seal sliding area
Replace the steering column as an assembly, if necessary.
CAUTION:
• Do not exert any axial load or impact to the steering column.
• Replace the column if it is depleted of grease, worn, damaged, or if any scratches or coating
separation is present on the shaft seal area.
2.
If the vehicle has been in a collision, or if noises are heard com-
ing from the steering column, check column length “L1” and “L2”
as shown. If out of specification, replace the steering column as
an assembly.
3.
Check the tilt device for proper operation range.
Steering column length
L1
: 165.1 mm (6.500 in)
L2
: 258.0 mm (10.16 in)
SGIA0475E
Range "A"
: 73.8 mm (2.906 in)
WGIA0083E
ST-22
< REMOVAL AND INSTALLATION >
POWER STEERING GEAR AND LINKAGE
POWER STEERING GEAR AND LINKAGE
Removal and Installation
INFOID:0000000001297921
CAUTION:
Spiral cable may snap due to steering operation if the steering column is separated from the steering
gear assembly. Therefore secure the steering wheel to avoid turning.
REMOVAL
1.
Set front wheels in the straight-ahead position.
2.
Remove the front tires from the vehicle, using power tool.
3.
Remove the undercover, using power tool.
4.
On 4WD models, remove the front final drive, then support the drive shafts, using suitable wire. Refer to
DLN-343, "Removal and Installation"
DLN-376, "Removal and Installation"
(M205).
5.
Remove the stabilizer bar brackets and reposition the stabilizer bar. Refer to
.
6.
Remove the cotter pins at the steering outer sockets.
CAUTION:
Do not reuse the cotter pins.
7.
Loosen the outer socket nuts.
8.
Remove the steering outer sockets from the steering knuckles,
using Tool, then remove the nuts.
CAUTION:
• Do not damage the outer socket boots.
• Do not damage the outer socket threads. Thread the ball
joint nut onto the end of the outer socket during removal.
1.
Cotter pin
2.
Mounting bracket
3.
Mounting insulator
4.
Steering gear assembly
5.
Washer
⇐
Front
AWGIA0024GB
Tool number
: HT72520000 (J-25730-A)
WGIA0130E
POWER STEERING GEAR AND LINKAGE
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9.
Remove the high-pressure and low-pressure piping from the
steering gear assembly, then drain the fluid from the piping.
10. Remove the bolt from the lower joint of the lower joint shaft, then
separate the lower joint from the steering gear assembly.
CAUTION:
• Do not damage the lower joint.
11. Remove the nuts and bolts of the steering gear assembly, using
power tool, then remove the steering gear assembly from the
vehicle.
INSTALLATION
Installation is in the reverse order of removal.
• With the steering wheel in the straight ahead position, align the slit
of the lower joint with the projection on the dust cover. Insert the
joint until surface "A" contacts surface "B".
• After removing/installing or replacing steering components, check
wheel alignment. Refer to
FSU-5, "Front Wheel Alignment"
.
• After adjusting wheel alignment, adjust neutral position of the
steering angle sensor. Refer to
STEERING ANGLE SENSOR NEUTRAL POSITION : Special
Repair Requirement"
• Bleed the air from the steering hydraulic system. Refer to
"Air Bleeding Hydraulic System"
.
INSPECTION AFTER INSTALLATION
• Check that the steering wheel turns smoothly to the left and right locks.
• Check that the number of turns are the same from the straight-forward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driving straight ahead.
LGIA0032E
LGIA0029E
LGIA0024E
SST491C
ST-24
< REMOVAL AND INSTALLATION >
POWER STEERING OIL PUMP
POWER STEERING OIL PUMP
Removal and Installation
INFOID:0000000001297925
VQ40DE ENGINE
VK56DE ENGINE
LGIA0036E
1.
Connector
2.
Suction pipe
3.
O-ring
4.
Bracket
5.
Pulley
6.
Lock washer
7.
Body assembly
8.
Copper washers
LGIA0038E
1.
Bracket
2.
Spring washer
3.
Pulley
4.
Power steering pump
5.
High pressure hose bracket
6.
O-ring
7.
Suction pipe
⇐
Front
Apply Genuine NISSAN PSF
POWER STEERING OIL PUMP
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REMOVAL
1.
Drain the power steering fluid from the reservoir tank.
2.
Remove the engine room cover. Refer to
EM-24, "Removal and Installation"
3.
Remove the air duct assembly. Refer to
EM-25, "Removal and Installation"
4.
Remove the serpentine drive belt from the auto tensioner and power steering oil pump. Refer to
EM-153, "Removal and Installation"
5.
Disconnect the pressure sensor electrical connector.
6.
Remove the high pressure and low pressure piping from the power steering oil pump. Refer to
.
7.
Remove the power steering oil pump bolts, then remove the power steering pump.
INSTALLATION
Installation is in the reverse order of removal. Refer to
• After installation, bleed the air from the hydraulic circuit thoroughly. Refer to
ST-10, "Air Bleeding Hydraulic
NOTE:
Belt tension is automatic and requires no adjustment.
ST-26
< REMOVAL AND INSTALLATION >
HYDRAULIC LINE
HYDRAULIC LINE
Removal and Installation
INFOID:0000000001297927
Refer to the following illustrations for hydraulic line removal and installation.
VQ40DE ENGINE
AWGIA0025GB
1.
Reservoir tank
2.
Suction hose
3.
High pressure hose
4.
Oil cooler
5.
Steering gear assembly
6.
Reservoir tank
7.
Reservoir tank bracket
8.
Return hose
9.
Hose clamps
10. Suction hose
11.
Connector bolts
12. Copper washers
⇐
Front
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