Nissan Titan. Manual — part 567
ST-4
< PREPARATION >
PREPARATION
Commercial Service Tool
INFOID:0000000009883500
Tool name
Description
Power tool
Loosening nuts, screws and bolts
PIIB1407E
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:0000000009883501
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:0000000009883502
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-15, "FOR NORTH AMERICA : Fluids
North America,
Checking Fluid Leakage
INFOID:0000000009883503
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:0000000009883504
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.
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