2008 INFINITI FX35 service

POWER STEERING FLUIDPS-7
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POWER STEERING FLUID
Checking Fluid LevelINFOID:0000000001327709
 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.
 For recommended fluid, refer to MA-9, "
Fluids and Lubricants".
Checking Fluid LeakageINFOID:0000000001327710
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 loos en 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-27
.
6. Check steering gear boots for accumulation of fluid indicating a from steering gear.
Air Bleeding Hydraulic SystemINFOID:0000000001327711
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.
5. If air bubbles and the cloud don't fade, stop engine, hold air bleeding until air bubbles and the cloud fade.
Perform the 2nd and the 3rd procedures again. HOT : Fluid temperatures from 50 to 80
°C (122 to
176 °F)
COLD : Fluid temperatures from 0 to 30 °C (32 to 86 °F)
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PS-8
< SERVICE INFORMATION >
POWER STEERING FLUID
6. Stop engine, check fluid level.
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STEERING WHEELPS-9
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STEERING WHEEL
On-Vehicle Inspection and ServiceINFOID:0000000001327712
CHECKING CONDITION OF INSTALLATION
 Check installation condition of steering gear assemb ly, front suspension, axle and steering column.
 Check if movement exists when steering wheel is mo ved up and down, to the left and right and to the axial
direction.
 Check if the mounting bolts for steering gear assembly are loose or not. Refer to PS-17
.
CHECKING STEERING WHEEL PLAY
1. Set tires to the straight ahead, start engine, then turn steering wheel to the left and right lightly, and mea-
sure steering wheel movement on the outer circumfe rence when steering wheel is turned up to the point
where tires start moving.
CHECKING NEUTRAL POSITION ON STEERING WHEEL
Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to FSU-5,
"Wheel Alignment Inspection".
1. Set vehicle to the straight direction, chec k if steering wheel is in the neutral position.
2. If it is not in the neutral position, remo ve steering wheel and reinstall it correctly.
3. If the neutral position cannot adjust in the two teeth of steering gear assembly, loosen outer socket lock
nuts of steering outer sockets, then adjust outer so cket by the same amount in the opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level and dry surface, set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating te mperature. [Make sure temperature of fluid is
approximately 50 to 80 °C (122 to 176 °F).]
NOTE:
Tires need to be inflated normal pressure.
4. Check steering wheel turning force when steering wheel has been turned 360 ° from neutral position.
NOTE:
Multiply the distance L from the hook of spring balance to the
center of steering wheel by the measurement value with a spring
balance.
5. If steering wheel turning force is out of the specification, check
rack sliding force and relief hydraulic pressure of oil pump.
Regarding relief hydraulic pressure of oil pump, refer to PS-27, "
On-Vehicle Inspection and Service".
End play of the axle direction for steering wheel : 0 mm (0 in)
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Steering wheel play on the
outer circumference : 0 − 35 mm (0 − 1.38 in)
Steering wheel turning force : Less than 7.45 N·m (0.76 kg-m, 66 in-lb)
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PS-10
< SERVICE INFORMATION >
STEERING WHEEL
a. Disconnect lower joint and steering knuckle from steering gear assembly. Refer to PS-12, "Removal and
Installation", FA X - 4 , "Removal and Installation", FAX-11, "Removal and Installation".
b. Start and run engine at idle to make sure steer ing fluid has reached normal operating temperature.
c. While pulling outer socket slowly in ±11.5 mm ( ±0.453 in) range
from neutral position, make sure rack sliding force is within
specification.
d. If rack sliding force is not within specification, overhaul steering gear assembly.
CHECKING FRONT WHEEL TURNING ANGLE
 Check front wheel turning angle after the toe-in inspection. Placefront wheels on turning radius gauges and rear wheels on stands
so that vehicle can be level. Check the maximum inner and outer
wheel turning angles for LH and RH road wheels.
 Start engine and run at idle, turn steering wheel all the way right and left, measure the turning angle.
 Measure rack stroke if angles are outside the specified value.
 Disassemble steering gear assembly to check the cause that rack
stroke is outside of the standard.
 Steering angles are not adjustable. Check steering gear assembly, steering column assembly and front suspension components for
wear or damage if any of the turning angles are different from the
specified value. Replace any of them, if any non-standard condi-
tion exists.
Removal and InstallationINFOID:0000000001327713
REMOVAL
NOTE:
When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned. This
will omit neutral position alignment procedure during spiral cable installation. Rack sliding force
: 147 − 211 N (15 − 21.5 kg, 33 − 47 lb)
SST090B
FAA0016D
Inner wheel (Angle: A) Minimum 32
°00’ (32.0 °)
Nominal 35 °00’ (35.0 °)
Maximum 36 °00’ (36.0 °)
Outer wheel (Angle: B) 30 °00’ (30.0 °)
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Rack stroke L 67.0 mm (2.638 in)
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STEERING WHEELPS-11
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1. Set vehicle to the straight-ahead direction.
2. Remove driver air bag module. Refer to SRS-34, "
Removal and Installation".
3. Remove steering wheel lock nut after steering is locked.
4. Remove steering wheel using the steering wheel puller.
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer to PS-12, "Removal and Installation".
NOTE:
Check the spiral cable neutral position after r eplacing or rotating spiral cable. Refer to SRS-36, "
Removal and
Installation".
CAUTION:
Do not twist spiral cable freely on excessively after it becomes tight (doing so may cause the cable to
be turn off). Tool number A: ST27180001 (J-25726-A)
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PS-12
< SERVICE INFORMATION >
STEERING COLUMN
STEERING COLUMN
Removal and InstallationINFOID:0000000001327714
COMPONENTS
CAUTION:
 Care must be taken not to give axial impact to steering column assembly during removal and instal-
lation.
 Care must be taken not to move steering gear during removal of steering column assembly.
REMOVAL
1. Set vehicle to the straight ahead-direction.
2. Remove driver air bag module from steering wheel. Refer to SRS-34
.
3. Disconnect steering switch connector, remove steering wheel lock nut, then remove steering wheel. Refer to SRS-36
.
4. Remove steering column cover. Refer to IP-10
.
5. Remove combination switch & spiral cabl e from steering column assembly. Refer to SRS-36
.
6. Remove instrument lower panel (driver side). Refer to IP-10
.
7. Remove combination meter. Refer to IP-10
.
1. Steering wheel 2. Combination switch & spiral cable 3. Steering column assembly
4. Collar 5. Hole cover seal 6. Clamp
7. Hole cover 8. Lower shaft 9. Lower joint
Refer to GI-8, "
Component", for the symbols in the figure.
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STEERING COLUMNPS-13
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8. Remove fixing bolts of knee protector, then remove knee protec- tor from vehicle.
9. Disconnect harness connector from each switch on steering col- umn shaft, then separate vehicle side harness from it.
10. Remove lock nut and bolt, then separate lower shaft from upper joint of steering column assembly.
11. Remove fixing bolts and nuts from steering member, remove steering column assembly from steering member.
12. Remove hole cover seal and clamp.
13. Remove mounting nuts, then remove hole cover from panel.
14. Raise vehicle, then remove mounting bolts of lower joint.
15. Remove lower joint and lower shaft from vehicle.
INSPECTION AFTER REMOVAL
 Check if there is something wrong with jacket tube of steering column assembly and collar etc. And then if
they are damaged, replace with new one.
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PS-14
< SERVICE INFORMATION >
STEERING COLUMN
 If vehicle has a collision light shocked, check column length “L” as
shown in the figure. Then if it is out of the specified value, replace
with new one.
 Check the turning torque of steering column with preload gauge (SST). If it is out of the specified value, repair it or replace with new
one.
INSTALLATION
 Refer to "COMPONENTS" 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-5, "
Wheel
Alignment Inspection".
 After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-8, "
Adjust-
ment of Steering Angle Sensor Neutral Position".
INSPECTION AFTER INSTALLATION
 Check tilt and telescopic mechanism operating range “L1”, “L2” as
shown in the figure.
 Check if steering wheel operation can turn to the end of the left and right smoothly.
Disassembly and AssemblyINFOID:0000000001327715
COMPONENTS
Steering column length “L”: 572 mm (22.52 in)
Turning torque : 0 − 0.2 N·m (0 − 0.021 kg-m, 0 − 1 in-lb)
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Tilt operating range “L1” : 28 - 32 mm (1.1 - 1.26 in)
Telescopic operating range
“L
2” : 18 - 22 mm (0.71 - 0.87 in)
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