rack INFINITI FX35 2004 Service Manual

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-7
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Revision: 2004 November 2004 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartAGS000GS
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-8PS-8PS-25PS-25PS-25PS-8PS-10PS-10
EM-15
, EM-169PS-10PS-12PS-19PS-12PS-12PS-19
NVH in PR section
NVH in RFD section
NVH in FAX, RAX, FSU, RSU section
NVH in WT section
NVH in WT section
NVH in FAX section
NVH in BR section
Possible cause and suspected parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
AXLE and SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
Symptom STEERINGNoise× × ××××× × × ×××××× ×
Shake××× × ×××× ×
Vibration××××× × ×× ×
Shimmy××× × ××× ×
Judder××××××

PS-8
POWER STEERING FLUID
Revision: 2004 November 2004 FX35/FX45
POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelAGS000GT

Stop engine before performing a fluid level check.

Ensure that fluid level is between the MAX range and MIN level.

Because fluid level differs within the HOT range and the COLD
range, check it carefully.
CAUTION:

Do not overfill the Max level.

Do not reuse any used power steering fluid.

Recommended fluid is Genuine NISSAN PSF or equivalent.
Checking Fluid LeakageAGS000GU
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50 to 80° C (122 to
176°F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to
check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-31, "
POWER STEERING OIL
PUMP" .
6. Check steering gear boots for accumulation of fluid indicating a from steering gear.
Air Bleeding Hydraulic SystemAGS000GV
Incomplete air bleeding causes the following. When this happens, bleed air again.

Generation of air bubbles in reservoir tank.

Generation of clicking noise in oil pump.

Excessive buzzing in oil pump.
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
oil pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times.
CAUTION:
Do not allow steering fluid reservoir tank to go below the low-level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully to the right and then fully to the left, and keep for about
three seconds. Then check whether a fluid leakage has occurred.
3. Repeat the 2nd procedure several times at about three seconds intervals.
CAUTION:
Do not hold steering wheel in the locked position more than 10 seconds. (There is the possibility
that oil pump may be damaged.)
4. Check generation of air bubbles and cloud in fluid.HOT : Fluid temperatures from 50 to 80 °C (122 to
176°F)
COLD : Fluid temperatures from 0 to 30°C (32 to 86°F)
SGIA0232J
SGIA0506E

STEERING COLUMN
PS-15
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Revision: 2004 November 2004 FX35/FX45
Components (without Automatic Drive Positioner)AGS000GZ
Disassembly and AssemblyAGS000HK
DISASSEMBLY
Remove all parts from jacket tube assembly.

When remove tilt lever, perform as shown in the figure.
1. Meter bracket 2. Steering column mounting clamp 3. Spring
4. Jacket tube assembly 5. Lock nut 6. Telescopic lock block
7. Telescopic lock guide 8. Telescopic lock bolt 9. Telescopic lever
10. Upper joint 11. Adjuster stopper 12. Steering adjust bolt
13. Tilt lever stopper 14. Tilt lever
SGIA0562E
SGIA0564E

PS-18
STEERING COLUMN
Revision: 2004 November 2004 FX35/FX45
Disassembly and AssemblyAGS000HL
DISASSEMBLY
Disassemble the parts from jacket tube. The parts to be disassembled are shown in the figure.
ASSEMBLY

Refer to PS-17, "Components (with Automatic Drive Positioner)" for tightening torque. Install in the
reverse order of disassembly.
1. Meter bracket 2. Jacket tube assembly 3. Upper joint
4. Spring 5. Lock nut 6. Lock block
7. Telescopic lock guide 8. Bush spacer 9. Tilt link assembly
10. Cooler 11. Tilt unit assembly 12. Tilt sensor assembly
13. Connector assembly 14. Clamp 15. Spring
16. Telescopic unit assembly 17. Telescopic sensor assembly

PS-20
POWER STEERING GEAR AND LINKAGE
Revision: 2004 November 2004 FX35/FX45
7. Remove oil pipings (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from pipings.
8. Remove mounting bolt of steering hydraulic piping bracket from
steering gear assembly.
9. Remove mounting bolt (lower side) of lower joint.
10. Remove mounting bolts of steering gear assembly with power
tool, and then remove steering gear assembly from vehicle.
INSTALLATION

Refer to PS-19, "Removal and Installation" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-6,
"Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .
SGIA0541E
SGIA0545E
SGIA0542E
SGIA0546E

POWER STEERING GEAR AND LINKAGE
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Revision: 2004 November 2004 FX35/FX45
CAUTION:

Secure steering gear assembly with a vise, using copper
plates or something similar to prevent it from being dam-
aged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assem-
bly 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. Remove rear cover cap from gear housing assembly.
3. Measure adjusting screw height from gear housing assembly,
then loosen adjusting screw.
CAUTION:

Do not turn adjusting screw more than twice.

Replace steering gear assembly when adjusting screw is
removed or more than twice.
4. Use a rear cover wrench (SST) to remove rear cover from sub-
gear assembly.
5. Remove O-ring with a flat-bladed screwdriver, and pull out rear
cover.
6. Remove sub-gear assembly from gear housing assembly.
CAUTION:
In order to protect oil seal from any damage, pull sub-gear
assembly out straightly.
7. Loosen lock nut of outer socket, and remove outer socket.
8. Remove boot clamps of the small diameter side and the large
diameter side, then remove boot.
1. Cotter pin 2. Outer socket 3. Boot clamp
4. Boot 5. Inner socket 6. Boot clamp
7. Gear housing assembly 8. Cylinder tubes 9. Rear cover cap
10. Rear cover 11. O-ring 12. Sub-gear assembly
13. Rack oil seal 14. Rack assembly 15. Rack Teflon ring
16. O-ring 17. End cover assembly
SGIA0544E
SGIA0568E
SGIA0728E
SGIA0508E

PS-24
POWER STEERING GEAR AND LINKAGE
Revision: 2004 November 2004 FX35/FX45
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.
9. Drill out the clinching part of cylinder outer rim with a 3 mm (0.12
in) drill in 1.5 mm (0.059 in) depth.
10. Remove end cover assembly with a 45 mm (1.77 in) open head
(suitable tool).
CAUTION:
Be careful not to damage rack. If it is damaged, replace
rack. Otherwise, oil leaks may result.
11. Pull rack assembly with rack oil seal out of gear housing assem-
bly.
CAUTION:
Be careful not to damage cylinder. If it is damaged, replace
gear housing assembly. Otherwise, oil leaks may result.
12. Heat rack Teflon ring to approximately. 40°C (104°F) with a
dryer, then remove it and O-ring from rack.
CAUTION:
Be careful not to damage rack. If it is damaged, change to a
new one to avoid oil leaks.
13. Use a taped 29 mm (1.14 in) socket and an extension bar.
Remove rack oil seal from gear housing assembly.
CAUTION:
Be careful not to damage gear housing assembly and cylin-
der inner wall. If it is damaged, gear housing assembly
must be replaced. Otherwise, oil leaks will result.
STC0013D
SST081B
SGIA0151E
SGIA0179E

POWER STEERING GEAR AND LINKAGE
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Revision: 2004 November 2004 FX35/FX45
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for cracks and deformation. Replace it, if necessary.
Rack
Check rack for damage and wear. Replace it, if necessary.
Sub-Gear Assembly

Check pinion gear for damage and wear. Replace it, if necessary.

Check bearing while rotating it. Replace bearing if bearing ball race was dented, worn, or damaged.
Gear Housing Assembly
Check gear housing assembly for damage and scratches (inner wall). Replace it, if necessary.
Outer Socket and Inner Socket
Swing Torque

Hook a spring balance at the point shown in the figure. Confirm
if the reading is within the specification. When ball stud and
inner socket start moving the measured value must be within the
specification. If the reading is outside the specification, replace
socket.
Rotating Torque

Using a preload gauge (SST), check if reading is within the
value specified below. If the value is outside the standard,
replace outer sockets.
SGIA0547E
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 4.84 − 46.7 N (0.50 − 4.7 kg, 4 - 34 lb) 12.1 − 93.7 N (1.3 − 9.5 kg, 9 − 69 lb)
Rotating torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
SST882B

PS-26
POWER STEERING GEAR AND LINKAGE
Revision: 2004 November 2004 FX35/FX45
Axial End Play

Apply load of 490 N (50 kg, 110 lb) to ball stud axially. Use a dial
gauge to measure the amount of the movement that the stud
makes. Check if the reading is within the specified below. If the
value is outside the standard, replace outer and inner sockets.
ASSEMBLY
1. Apply Genuine Nissan PSF or equivalent to O-ring. Put an O-ring into rack Teflon ring.
NOTE:
Do not reuse O-ring.
2. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer. Assemble it to mounting groove of rack.
NOTE:
Do not reuse rack Teflon ring.
3. To fit rack Teflon ring on rack, use rack Teflon ring installation
tool (SST) from tooth side. Compress rim of ring with the tool.
4. Apply Multi-purpose grease to rack oil seal. Insert rack oil seal,
then insert rack assembly to gear housing assembly.
NOTE:
Do not reuse rack oil seal.
CAUTION:

When inserting rack assembly, do not damage retainer
sliding part. If it is damaged, replace gear housing
assembly.

When inserting rack assembly, do not damage cylinder
inner wall. If it is damaged, it may cause oil leaks. Replace gear housing assembly.

Attach rack oil seal. Both inner lip and outer lip should
face each other.
Outer socket 0.5 mm (0.020 in) or less
Inner socket 0.2 mm (0.008 in) or less
SGIA0057E
SGIA0153E
SGIA0154E
SGIA0205E

POWER STEERING GEAR AND LINKAGE
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Revision: 2004 November 2004 FX35/FX45
a. To avoid damaging inner rack oil seal, wrap an OHP sheet
[approximately. 70 mm (2.76 in) × 100 mm (3.94 in) around rack
tooth. Place oil seal on sheet. Then, pull oil seal along with OHP
sheet until they pass the toothed section of rack, then remove it.
b. Insert rack oil seal (inner) to piston (rack Teflon ring) position
and push retainer to adjust screw side with fingers lightly, and
then make rack move in gear housing assembly, install rack oil
seal (inner) to fit with gear housing assembly.
c. When installing outer rack oil seal, cover the end of rack with an
OHP sheet [70 mm (2.76 in) × 100 mm (3.94 in)]. It will avoid
damaging rack oil seal. Then place oil seal on sheet. Pull rack oil
seal along with OHP sheet until they pass rack end. Then
remove OHP sheet.
d. Install end cover assembly to rack, move it to gear housing
assembly.
5. Using a 45 mm (1.77 in) open head (suitable tool), tighten end
cover assembly at the specified torque.
CAUTION:
Do not damage rack surface. If it is damaged, it may cause
oil leaks. Replace rack assembly.
6. After tightening end cover assembly, caulk cylinder at one point
as shown in the figure using a punch. This will prevent end cover
from getting loose.
7. Install sub-gear assembly to gear housing assembly.
CAUTION:
In order to protect oil seal from any damage, insert sub-
gear assembly out straightly.
8. Apply Genuine Nissan PSF or equivalent to O-ring. Install O-ring
to rear cover.
NOTE:
Do not reuse O-ring.
SGIA0155E
SGIA0548E
SGIA0157E
SST081B
SGIA0158E