Nissan Quest E52. Instruction — part 1170
ST-6
< BASIC INSPECTION >
STEERING WHEEL
BASIC INSPECTION
STEERING WHEEL
Inspection
INFOID:0000000009648902
NEUTRAL POSITION STEERING WHEEL
1.
Check that steering gear assembly, steering column assembly and steering wheel are installed in the cor-
rect position.
2.
Check wheel alignment within specification. Refer to
.
3.
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
.
STEERING WHEEL TURNING TORQUE
1.
Park the vehicle on a level and dry surface, set parking brake.
2.
Tires need to be inflated to the specified pressure. Refer to
3.
Remove driver air bag module. Refer to
SR-12, "Removal and Installation"
.
4.
Start the engine.
5.
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)].
6.
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
RACK SLIDING FORCE
1.
Disconnect lower joint from steering gear assembly. Refer to
ST-16, "Removal and Installation"
.
2.
Disconnect steering outer socket from steering knuckle. Refer to
ST-22, "Removal and Installation"
3.
Run the engine at idle and adjust the reservoir tank oil temperature to room temperature [recommended
oil temperature: approximately 20
°
C (68
°
F)].
4.
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
1.
Perform toe-in inspection. Refer to
.
CAUTION:
Perform front wheel turning angle inspection, after toe-in inspection.
Steering wheel turning
torque
: Refer to
.
JSGIA0431ZZ
Rack sliding force
: Refer to
SST090B
STEERING WHEEL
ST-7
< BASIC INSPECTION >
C
D
E
F
H
I
J
K
L
M
A
B
ST
N
O
P
2.
Place front wheels on turning radius gauges and rear wheels on
stands, so that vehicle can be level.
3.
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
A
: Inner wheel angle
B
: Outer wheel angle
Steering angle
: Refer to
.
SGIA0055E
Rack stroke neutral position (L)
: Refer to
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
—
—
NV
H
in
F
A
X
, R
A
X
,
FS
U
, R
S
U
se
ct
ion
.
NV
H in
WT se
cti
on
.
NV
H in
WT se
cti
on
.
NV
H
in
F
A
X
se
ct
ion
.
NV
H
in
B
R
s
ec
tio
n.
Possible cause and SUSPECTED PARTS
F
lui
d l
ev
el
Ai
r i
n
hy
dra
u
lic sy
st
em
Ou
ter/
inn
e
r
so
ck
et
ba
ll
joi
n
t swi
n
g
ing
to
rqu
e
Ou
ter/
inn
e
r
so
ck
et
ba
ll
joi
n
t rot
a
ti
ng
to
rque
Ou
ter/
inn
e
r
so
ck
et
ba
ll
joi
n
t en
d p
la
y
S
te
eri
ng
fl
ui
d
l
e
ak
ag
e
S
te
e
ri
ng
whe
e
l pl
ay
S
te
e
ri
ng
ge
ar rac
k sl
id
in
g
fo
rce
Im
pro
p
e
r st
ee
ri
ng
wh
ee
l
Im
p
rop
er i
n
s
tal
la
tio
n
o
r lo
os
en
es
s
of
til
t l
o
c
k
l
e
v
e
r
M
ou
nt
ing
l
oos
e
nes
s
S
tee
rin
g
c
o
lum
n
de
form
at
ion
o
r da
ma
ge
Im
p
rop
er i
n
s
tal
la
tio
n
o
r lo
os
en
es
s
of
st
ee
ring
c
o
lu
m
n
S
te
eri
ng
li
nk
ag
e l
oo
se
ne
ss
A
XLE and
SUSP
ENSION
TI
RE
ROAD W
H
EEL
DRIV
E SHAFT
BR
AK
E
Symptom
Steering
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
×
POWER STEERING FLUID
ST-9
< PERIODIC MAINTENANCE >
C
D
E
F
H
I
J
K
L
M
A
B
ST
N
O
P
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)].
2.
Turn steering wheel several times from full left stop to full right
stop.
3.
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.)
4.
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
.
5.
If fluid leakage from oil pump is noticed, check oil pump. Refer to
.
6.
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.
1.
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.
2.
Start the engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leak-
age.
3.
Repeat step 2 above several times at approximately 3 seconds intervals.
COLD
: Fluid temperature 0 – 30
°
C (32 – 86
°
F)
Recommended fluid
: Refer to
.
Fluid capacity
: Refer to
JPGIA0164ZZ
SGIA0506E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст