Infiniti M35/M45 Y50. Manual — part 1020
![](/vehicles/zatt/cen/houeebante/ingo.png)
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
RFD-7
C
E
F
G
H
I
J
K
L
M
A
B
RFD
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PFP:00003
NVH Troubleshooting Chart
NDS000F1
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×
: Applicable
Reference page
R
e
fe
r to
.
R
e
fe
r to
.
R
e
fe
r to
.
R
e
fe
r to
.
R
e
fe
r to
.
R
e
fe
r to
.
NV
H
in
PR
s
e
c
ti
o
n
.
NV
H
in
F
AX,
RAX, FSU
a
n
d
RSU
s
e
c
ti
o
n
s
.
NV
H
in
W
T
s
e
c
tio
n
.
NV
H
in
W
T
s
e
c
tio
n
.
N
V
H
i
n
F
AX and R
AX sec
ti
on.
NV
H
in
BR
s
e
c
ti
o
n
.
NV
H
in
PS
s
e
c
ti
o
n
.
Possible cause and SUSPECTED PARTS
G
e
ar
t
oot
h r
o
u
g
h
G
e
ar
con
ta
c
t
im
pr
o
per
T
oot
h sur
fa
c
es w
o
rn
B
a
ckl
as
h i
n
c
o
rr
ect
C
o
m
pani
on f
lan
ge exc
e
ssi
ve
r
unou
t
G
e
ar
oi
l
im
pr
o
per
P
R
OPE
LLER SHAFT
A
X
LE AND
SUSPENSION
TI
R
E
S
ROAD W
H
EEL
DRIVE SHAFT
BR
AK
E
S
S
T
EERI
N
G
Symptom
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
![](/vehicles/zatt/cen/houeebante/ecalouia.png)
RFD-8
DESCRIPTION
DESCRIPTION
PFP:00000
Cross-Sectional View
NDS000F2
1.
Side flange
2.
Pinion mate gear
3.
Drive gear
4.
Pinion mate shaft
5.
Differential case
6.
Side bearing
7.
Drive pinion
8.
Pinion front bearing
9.
Companion flange
10. Collapsible spacer
11.
Pinion rear bearing
12. Side gear
PDIA0476E
![](/vehicles/zatt/cen/houeebante/rusa.png)
DIFFERENTIAL GEAR OIL
RFD-9
C
E
F
G
H
I
J
K
L
M
A
B
RFD
DIFFERENTIAL GEAR OIL
PFP:KLD30
Changing Differential Gear Oil
NDS000F3
DRAINING
1.
Stop engine.
2.
Remove drain plug (1) and drain gear oil.
3.
Set a gasket on drain plug (1) and install it to final drive assem-
bly and tighten to the specified torque. Refer to
CAUTION:
Do not reuse gasket.
FILLING
1.
Remove filler plug (1). Fill with new gear oil until oil level reaches
the specified level near filler plug mounting hole.
2.
After refilling oil, check oil level. Set a gasket to filler plug (1),
then install it to final drive assembly. Refer to
CAUTION:
Do not reuse gasket.
Checking Differential Gear Oil
NDS000F4
OIL LEAKAGE AND OIL LEVEL
●
Make sure that oil is not leaking from final drive assembly or around it.
●
Remove filler plug (1) and check oil level from filler plug mount-
ing hole as shown in the figure.
CAUTION:
Do not start engine while checking oil level.
●
Set a gasket on filler plug (1) and install it on final drive assem-
bly. Refer to
.
CAUTION:
Do not reuse gasket.
PDIA0748J
Oil grade and Viscosity:
Refer to
MA-12, "Fluids and Lubricants"
.
Oil capacity:
Approx. 1.4 (3 US pt, 2-1/2 Imp pt)
PDIA0749J
PDIA0749J
![](/vehicles/zatt/cen/houeebante/weay.png)
RFD-10
FRONT OIL SEAL
FRONT OIL SEAL
PFP:38189
Removal and Installation
NDS000F5
CAUTION:
Verify identification stamp of replacement frequency put in the lower part of gear carrier to determine
replacement for collapsible spacer when replacing front oil seal. Refer to
STAMP OF REPLACEMENT FREQUENCY OF FRONT OIL SEAL"
. If necessary collapsible spacer
replacement, remove final drive assembly and disassemble it to replace front oil seal and collapsible
spacer. Refer to
RFD-16, "Removal and Installation"
and
RFD-18, "Disassembly and Assembly"
NOTE:
The reuse of collapsible spacer is prohibited in principle. However, it is reusable on a one-time basis
only in cases when replacing front oil seal.
IDENTIFICATION STAMP OF REPLACEMENT FREQUENCY OF FRONT OIL SEAL
●
The diagonally shaded area in the figure shows stamping point
for replacement frequency of front oil seal.
●
The following table shows if collapsible spacer replacement is
needed before replacing front oil seal.
When collapsible spacer replacement is required, disassemble
final drive assembly to replace collapsible spacer and front oil
seal. Refer to
RFD-18, "Disassembly and Assembly"
.
CAUTION:
Be sure to make a stamping after replacing front oil seal.
●
After replacing front oil seal, make a stamping on the stamping point in accordance with the table below in
order to identify replacement frequency.
CAUTION:
Stamping shall be made from left to right.
REMOVAL
1.
Drain gear oil. Refer to
2.
Make a judgment if a collapsible spacer replacement is required. Refer to
STAMP OF REPLACEMENT FREQUENCY OF FRONT OIL SEAL"
3.
Remove center muffler with a power tool. Refer to
4.
Remove rear wheel sensor. Refer to
5.
Remove drive shaft from final drive. Then suspend it by wire etc. Refer to
.
Stamp
collapsible spacer replacement
No stamp
Not required
“0” or “0” on the far right of stamp
Required
“01” or “1” on the far right of stamp
Not required
PDIA0976E
Stamp before stamping
Stamping on the far right
Stamping
No stamp
0
0
“0”
(Front oil seal was replaced once.)
1
01
“01”
(Collapsible spacer and front oil seal were replaced last time.)
0
010
“0” is on the far right.
(Only front oil seal was replaced last time.)
1
...01
“1” is on the far right.
(Collapsible spacer and front oil seal were replaced last time.)
0
...010
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