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Nissan Quest E52. Manual - part 1170

ST-6

< BASIC INSPECTION >

STEERING WHEEL

BASIC INSPECTION

STEERING WHEEL

Inspection

INFOID:0000000009648902

NEUTRAL POSITION STEERING WHEEL

Check that steering gear assembly, steering column assembly and steering wheel are installed in the cor-
rect position.

Check wheel alignment within specification. Refer to

FSU-7, "Inspection"

Set the vehicle to the straight-ahead position and confirm steering wheel is in the neutral position.
• Loosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if

steering wheel is not in the neutral position.

CAUTION:

If the adjustment is performed by using the inner socket, check wheel alignment after the adjust-
ment. Refer to

FSU-7, "Inspection"

STEERING WHEEL TURNING TORQUE

Park the vehicle on a level and dry surface, set parking brake.

Tires need to be inflated to the specified pressure. Refer to

WT-51, "Tire Air Pressure"

Remove driver air bag module. Refer to

SR-12, "Removal and Installation"

Start the engine.

Check that the reading is within the following specified range
using the preload gauge (A) [SST: ST3127S000 (J-25765-A)].

NOTE:
To check, oil temperature must be room temperature [recom-
mended oil temperature: approximately 20

C (68

F)].

If steering wheel turning torque 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

ST-33,

"Inspection"

RACK SLIDING FORCE

Disconnect lower joint from steering gear assembly. Refer to

ST-16, "Removal and Installation"

Disconnect steering outer socket from steering knuckle. Refer to

ST-22, "Removal and Installation"

Run the engine at idle and adjust the reservoir tank oil temperature to room temperature [recommended
oil temperature: approximately 20

C (68

F)].

While pulling outer socket slowly in

11.5 mm (

0.453 in) range

from neutral position, make sure rack sliding force is within
specification.

• If rack sliding force is not within specification, overhaul steer-

ing gear assembly.

FRONT WHEEL TURNING ANGLE

Perform toe-in inspection. Refer to

FSU-7, "Inspection"

CAUTION:

Perform front wheel turning angle inspection, after toe-in inspection.

Steering wheel turning
torque

: Refer to

ST-36, "Steering

Wheel"

JSGIA0431ZZ

Rack sliding force

: Refer to

ST-36, "Steering Gear

and Linkage"

SST090B

STEERING WHEEL

ST-7

< BASIC INSPECTION >

Place front 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.

• With the engine at idle, turn steering wheel from full left stop to

full right stop and measure the turning angles (maximum inner
wheel steering angle and maximum outer wheel steering
angle).

• Check the following items when turning angle is out of the standard.
- Check the neutral position of the rack stroke (L).

- 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 condition exists.

FAA0016D

: Inner wheel angle

: Outer wheel angle

Steering angle

: Refer to

ST-36, "Steering Angle"

SGIA0055E

Rack stroke neutral position (L)

: Refer to

ST-36,

"Steering Gear and
Linkage"

SGIA0629J

ST-8

< SYMPTOM DIAGNOSIS >

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

SYMPTOM DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000009648903

Use the chart below to find the cause of the symptom. If necessary, repair or replace these parts.

: Applicable

Reference

—

, R

ion

H in

WT se

cti

H in

WT se

cti

ion

tio

Possible cause and SUSPECTED PARTS

lui

d l

r i

dra

lic sy

ter/

inn

joi

t swi

ing

rqu

ter/

inn

joi

t rot

rque

ter/

inn

joi

t en

d p

eri

whe

l pl

ar rac

k sl

rce

pro

r st

rop

er i

tal

tio

r lo

til

t l

ing

oos

nes

tee

rin

lum

form

ion

r da

rop

er i

tal

tio

r lo

ring

eri

e l

XLE and

SUSP

ENSION

ROAD W

EEL

DRIV

E SHAFT

Symptom

Steering

Noise

Shake

Vibration

Shimmy

Judder

POWER STEERING FLUID

ST-9

< PERIODIC MAINTENANCE >

PERIODIC MAINTENANCE

POWER STEERING FLUID

Inspection

INFOID:0000000009648904

FLUID LEVEL

With the engine stopped, check that the fluid level is between MIN
and MAX of the reservoir cap level gauge when the fluid temperature
is in COLD state.

CAUTION:

• The fluid level should not exceed the MAX line. Excessive fluid causes fluid leakage from the cap.
• Never reuse drained power steering fluid.
• Always use the specified fluid. Refer to

MA-10, "Fluids and Lubricants"

FLUID LEAKAGE

Check hydraulic connections for fluid leakage, cracks, damage,
looseness, or wear.
1.

Run the engine at idle and adjust the reservoir tank oil tempera-
ture to room temperature [recommended oil temperature:
approximately 20

C (68

F)].

Turn steering wheel several times from full left stop to full right
stop.

Hold steering wheel at each lock position for five seconds and
carefully check for fluid leakage.

CAUTION:

Never hold the steering wheel in a locked position for more
than 10 seconds. (There is the possibility that power steer-
ing oil pump assembly may be damaged.)

If fluid leaks from the joint, loosen the joint part and retighten it, being careful not to damage it.

CAUTION:

For tightening torque and non reusable parts, refer to

ST-35, "Exploded View"

If fluid leakage from oil pump is noticed, check oil pump. Refer to

ST-33, "Inspection"

Check steering gear boots for accumulation of fluid leaked from steering gear.

BLEEDING HYDRAULIC SYSTEM

If air bleeding is not complete, the following symptoms can be observed.
• Bubbles are created in reservoir tank.
• Clicking noise can be heard from oil pump.
• Excessive buzzing in the oil pump.

NOTE:
Fluid noise may occur in the steering gear or oil pump. This does not affect performance or durability of the
system.

Turn steering wheel several times from full left stop to full right stop with engine stopped.

CAUTION:

Fill reservoir tank with a sufficient amount of fluid so that fluid level is not below the MIN line while
turning steering wheel.

Start the engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leak-
age.

Repeat step 2 above several times at approximately 3 seconds intervals.

COLD

: Fluid temperature 0 – 30

C (32 – 86

Recommended fluid

: Refer to

MA-10, "Fluids and

Lubricants"

Fluid capacity

: Refer to

ST-36, "General

Specifications"

JPGIA0164ZZ

SGIA0506E

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