Nissan Titan A60. Instruction — part 892
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
ST-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000006164496
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Reference page
"
(2F1
31
0),
(2S1
41
0),
, (3S1
41
0)
"
"
"
"
"
"
Possible cause and sus-
pected parts
F
lui
d l
ev
el
Ai
r i
n
hy
dra
u
lic sy
st
em
S
tee
rin
g o
ut
er s
oc
ke
t
ba
ll j
oi
nt
swin
gi
ng
fo
rce
S
tee
rin
g o
ut
er socket
ba
ll j
oi
nt
rot
a
tin
g
torq
ue
S
te
eri
ng
ou
te
r so
cke
t
bal
l jo
in
t
en
d pl
ay
P
ower
ste
eri
ng
fl
uid
le
ak
ag
e
S
te
e
ring
whe
e
l pl
ay
S
teering wheel t
urning force
Dri
ve
be
lt
loo
sen
es
s
Im
pro
p
er
st
ee
ring
wh
ee
l
Im
p
rop
er i
ns
tal
la
tio
n o
r lo
os
en
es
s of
til
t lo
ck
le
ve
r
M
ou
nt
ing
ru
bb
er d
et
erio
rat
ion
S
tee
rin
g c
o
lum
n
de
form
at
ion
o
r da
ma
ge
Im
p
rop
er i
ns
tal
la
tio
n o
r lo
os
en
es
s of
st
ee
ring
c
olu
m
n
S
te
eri
ng
li
nk
ag
e l
oo
se
ne
ss
P
R
OPE
LLE
R SHAFT
FRO
NT FINAL
DRIVE
W
H
EEL H
U
B
S
U
S
PENSION
TI
RE
S
ROAD W
H
EEL
DRIV
E SHAFT
BR
AK
E
S
Symptom
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
× ×
×
Shake
×
×
×
×
×
×
×
× ×
×
Vibration
×
×
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
Shudder
×
×
×
×
×
×
×
ST-6
< PERIODIC MAINTENANCE >
POWER STEERING FLUID
PERIODIC MAINTENANCE
POWER STEERING FLUID
Checking Fluid Level
INFOID:0000000006164497
Check fluid level, referring to the scale on reservoir tank.
Use HOT range for power steering fluid temperatures of 50
° – 80°C
(122
° – 176°F).
Use COLD range for power steering fluid temperatures of 0
° – 30°C
(32
° – 86°F).
CAUTION:
• Do not overfill.
• Do not reuse any used power steering fluid.
• Recommended power steering fluid is Genuine NISSAN PSF
or equivalent. Refer to
MA-21, "FOR NORTH AMERICA : Fluids
North America,
Checking Fluid Leakage
INFOID:0000000006164498
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until power steering fluid temperature reaches 50
° –
80
°C (122° – 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 power steering fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not
over tighten connector as this can damage O-ring, washer and connector.
5. If power steering fluid leakage from oil pump is noticed, check power steering oil pump. Refer to
.
6. Check steering gear boots for accumulation of power steering fluid indicating a leak from the power steer-
ing gear.
Air Bleeding Hydraulic System
INFOID:0000000006164499
Incomplete air bleeding causes the following. When this happens, bleed air again.
• Air bubbles in reservoir tank.
• Clicking noise in power steering oil pump.
• Excessive buzzing in power steering oil pump.
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
power steering oil pump or the power steering 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 MIN level line. Check tank frequently and
add power steering fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds.
Then check for power steering fluid leakage.
3. Repeat step 2 several times at about three second intervals.
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that the power steering oil pump may be damaged.)
4. Check for air bubbles or cloudy fluid.
LGIA0021E
SGIA0506E
POWER STEERING FLUID
ST-7
< PERIODIC MAINTENANCE >
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5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud-
iness does not exist.
6. Stop engine, check power steering fluid level.
ST-8
< REMOVAL AND INSTALLATION >
STEERING WHEEL
REMOVAL AND INSTALLATION
STEERING WHEEL
On-Vehicle Inspection and Service
INFOID:0000000006164500
CHECKING CONDITION OF INSTALLATION
• Check installation condition of power steering gear assembly, front suspension, axle and steering column.
• Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.
• Check if the nuts for power steering gear assembly are loose.
.
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steering wheel to the left and right lightly, and measure
steering wheel movement on the outer circumference 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
.
1. Turn tires straight ahead, check if steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering
stem, loosen tie-rod lock nuts of steering outer sockets, then adjust tie-rods by the same amount in the
opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60
°– 80°C (140°– 176°F).
4. Tires need to be inflated to specified pressure. Refer to
5. Check steering wheel turning force using Tool when steering
wheel has been turned 360
° from the neutral position.
6. If steering wheel turning force is out of specification, inspect
steering column. Refer to
ST-12, "Removal and Installation"
.
End play of the axial direction for steering wheel
: Refer to
LGIA0024E
Steering wheel play on the outer circumference : Refer to
Tool number
: (—) (J-44372)
Steering wheel
turning force
: Refer to
WGIA0035E
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