height adjustment NISSAN 300ZX 1984 Z31 Propeller Shaft And Differential Carrier Workshop Manual

PROPELLER SHAFT &
DIFFERENTIAL CARRIER
I
SECTION PD
CONTENTS
PROPELLER SHAFT
INSPECTION
REMOVAL
I NSTALLATI ON
CHECKING AND CORRECTING UNBALANCED PROPELLER SHAFT
DIFFERENTIAL CARRIER (Type R200)
REMOVAL
PRE-DISASSEMBLY INSPECTION
DISASSEMBLY
DIFFERENTIAL CASE
INSPECTION.
ASSEMBLY AND ADJUSTMENT
PRECAUTIONS IN REASSEMBLY
ASSEMBLY OF DIFFERENTIAL GEAR CASE
ADJUSTMENT OF DRIVE PINION PRELOAD
ADJUSTMENT OF DRIVE PINION HEIGHT
ADJUSTMENT OF SIDE BEARING WASHERS
. ..
INSTALLATION .
REPLACEMENT OF OIL SEALS . ..
FRONT OIL SEAL .. ..
SIDE OIL SEAL
SERVICE DATA AND SPECIFICATIONS (S D S)
SPECIAL SERVICE TOOLS
PD- 2
PD- 2
PD- 2
PD- 2
PD- 2
PD- 3
PD- 4
PD- 4
PD- 4
PD- 5
PD- 5
PD- 6
PD- 6
PD- 6
PD- 6
PD- 7
PD- 8
PD-10
PD-10
PD-10
PD-10
PD-11
PD-13

DIFFERENTIAL CARRIER (Type R200)
4 Inspect thrust washer faces Small
damage can be corrected with sand-
paper If pinion mate to side gear
backlash
(or the clearance between
side gear and thrust washer) exceeds
the specified value, replace thrust
washers
Pinion mate-to-side gear backlash:
Less than
0 15 mm (0 0059 in)
5 Inspect carrier and differential
case for cracks or distortion If either
conmtion
1s evident, replace faulty
parts
6 As
a general rule, oil seal should
be replaced at each disassembly
ASSEMBLY AND
ADJUSTMENT
Assembly can be done in the re-
verse order of disassembly Adherence
to the following directions for ad-
justment and usage of special tools
enable to obtain a perfect differential
operation
PRECAUTIONS IN
REASSEMBLY
1 Arrange slums, washers and the
llke to install them correctly
2 Thoroughly clean the surfaces
on
which shuns, washers, bearings and
bearing retainers are installed
3 Thoroughly clean od from rmg
gear bolt and its hole and contacting
surfaces of rmg gear and differential
case with “Locktite Lacquic Prnner”
or equivalent
4 Apply gear oil when mstalling
beanngs
5 Pack recommended multi-purpose
grease mto cavity between hps when
fitting
OII seal
ASSEMBLY OF
DIFFERENTIAL GEAR CASE
1 Assemble pnnon mates, side gears,
thrust washers and thrust block in
dlfferential case
2
Fit puuon shaft to differential
case
so that it meets lock pin holes
3 Adjust side gear-to-pinion mate
backlash or adjust the clearance be-
tween the rear face of side gear and
thrust washer
If above procedure is not effective
with existing washer, try with other
washers
Pinion mate gear-to-side gear
backlash
Less than 0 15 mm (0 0059 in)
-GL~: ~ . x.f-’
PDO23
4 Lock pinion shaft lock pin using a
punch after it
IS secured in place
5 Apply oil to gear tooth surfaces
and thrust surfaces and check that
they turn properly
6 Apply locktng agent [Locktite
(stud lock) or equivalent] to contact-
ing surfaces of rmg gear and differen-
tial case, then place differential case
on rmg gear
7. Apply a small amount of locktng
agent (described above) to rmg gear
bolts, and mstall them
CAUTION:
a.
Use only genuine drive gear bolts.
b. Tighten bolts in criss-cross fashion
lightly tapping around bolt heads
with a hammer.
PD351
7 When replacing side bearing,
measure bearing width using Master
Gauge KV38102000 and Weight Block
ST32501000 prior to installation
PD-6
Standard bearing width
21 0 mm (0 827 in)
PD425
8 Press fit side bearing inner race on
differential case with Diff Side
Bear-
ing Drift KV38100300 and Adapter
ST33061000
KV38100300 !ii
PO353
ADJUSTMENT OF
DRIVE PINION PRELOAD
Adjust dnve pinion preload with
spacer and washer between front and
rear bearing inner races, regardless of
thickness of pinion height adjusting
washer
This adjustment must be carried
out without
oil seal inserted
1 Press fit front and rear bearing
outer races into gear carrier using
Drive Pinion Outer Race Drift Set
ST30611000, ST30613000 and
ST3062
1000
Front ST3061 1000 and
Rear ST3061100Oand
ST306 I3000
ST30621000
2
Dummy Shaft KV38100110
Insert rear bearing inner race into

DIFFERENTIAL CARRIER (Type R200)
3 Fit drive pinion bearing spacer,
washer front bearing inner race,
Dum-
my Shaft Collar KV38100130 and
companion flange
in that order on
dummy shaft and tighten drive pinion
nut with Stopper
KV38100140
Drive pinion nut
186 -216 N rn
(19.22 kgm,
137 - 159 ft-lb)
A
rKV38100 I40
4 Measure pinion bearlng preload
using Preload Gauge
ST3127S000, and
select washer and spacer that
WIN
provide required preload
Pinion bearing preload
(without oil seal)
1.0.1 3 Nm
(10 - 13 kgcm,
8 7. 11 3 in-lb)
Note
a Replace beanng washer and spacer
with thicker ones if pinion cannot
be turned by hand while
it is being
tightened
b Reload of old beanng is the same
due as that of a new bearing
ADJUSTMENT OF
DRIVE PINION HEIGHT
Adjust pinion height with washer
located between rear bearing inner
race and back of pinion gear
1 Install Height Gauge
KV38100120 on carrier with dummy
shaft mounted
Haghi gduge (KV3810012?)
PD355
2 Measure the clearance (N) be-
tween the tip end
of height gauge and
the end surface
of dummy shaft, using
a thickness gauge
3 The thckness of drive pmon
height adlusting washer can be ob-
tamed from the followmg formula
T=N-[(H-D')xOOl] +3M)
Where,
T Required thickness of rear bear-
ing adlusting washers (mm)
N Measured value with ttuckness
H Figure marked on the drive
pinion head
D Figure marked on the dummy
shaft
Note Figures for H and D are dimen-
sional
vanations in a unit of 1/100
mm (4/10,000 m) agdmst each
standard measurement
gauge (mm)
PD-7
Set number
Hcad
number
(HI
PO186
Examples of calculation
Ex
1 -..
N= 0 23 mm
H=t2, D=1
T =N-[(H-D')xO01]+300
= 0 23 - [((t2) - 1) x 0 01 ]
=023 - [(2 - 1)x 0011 t 3 00
=023-[1x001]+300
= 0 23 - 0 01 + 3 M)
=322mm
+ 3 00
The correct washer IS 3 21 mm
thick
Ex 2 --.
N=03Smm
H=-1,
D'=2
T =N- [(H-D')xOOl] t300
= 0 35 - [((-I) - 2) x 0 011
t 3 00
+ 3 00
=03S-[(-1-2)~001]
= 0 3s - [(-3) x 0 011 t 3 00
=035-[-003]+300
=o 3s t 003 t 3 00
=3 38
The correct washer IS 3 39 mm
thick
Ex 3 -..
N =O 27 mm
H=O, D'=O
T =N- [(H-D')xOOl] +300
=027- [(0-O)xOO1]
=027- [OxOOI] t300
=027 -0t 300
= 3 27
f 3 00
The correct washer is 3 27 mm
ttuck

DIFFERENTIAL CARRIER (Type R200)
Note If values sigrufying H and D' are
not given, regard them as zero and
compute After assembly, check to
see that tooth contact
is correct If
not, readjust
For the tooth contact pattern, see
page PD-9
Note Phon height adjustment can
be made
in a ut of 1/1m mm
(4/10,000 m) by seleahg dm
0 05 mm (0 0020 in) or 0.07 mm
(0 0028 in) shm in above chart
4 Fit determined pinion height ad-
justing washer
in drive pinion, and
press
fit rear bearing inner race in it
using Base ST30901000
ST3090 1000
PO092
Note Insert washer mto pinion with
the chamfered side towards gear
5 Lubricate pinion front and rear
beanngs Install dnve pinion in gear
carrier into which drive pinion bearing
spacer and vasher, front bearing inner
race and front pllot bearing spacer,
moreover, pllot bearing and front
oll
seal are fitted Fit front OII seal using
Gear Carrier Front Oil Seal Drift
KV38
100500
6 Fit companion flange on drive
pinion, and secure it in position by
tightening
nut to specified torque con-
firming preload
Note If dnve pimon lock nut IS worn,
replace it
@ : Drive pinion nut
186 - 216 N rn
(19.22 kgm,
137.159 ft-lb)
Drive pinion preload
(with oil real)
1.13 - 1.72 N.m
(11.5.17.5 kgcm,
10 0 - 15.2 in-lb)
ADJUSTMENT OF SIDE
BEARING WASHERS
1 If the hypoid gear set, carrier,
differential case
or side bearing has
been replaced with new
part, adjust
the side bearing preload with adjusting
washer The required thicknesses of
the left and nght washers can be
obtained from the following formulas
T, =(A-C+D-H)xOOl +E+205
T2 =(B- D t H') x 0 01 t F+ G+ I 95
Where,
Ti Required thickness
of left side
washer (mm)
T2 Required thicknes of right side
washer
(mm)
A& B Figure marked on the gear
carrier
C & D Figure marked on the differ-
ential case
E & F These are differences in width
of left or right side bearing against
the standard width
(21 00 mm)
If bearing width is 20 82 mm, this
21 00 -2082 =O 18 (mm)
This is the difference in thickness
of side spacer against the standard
width (8
10 mm) If spacer width is
8 02 mm, this figure wdl be as
follows
H Figure marked on rmg gear
8
10 - 8 02 = 0 08 (mm)
Figures for A, B, C and D are
dimensional variations m a unit of
l/loO mm against each standard meas-
urement
To measure width of side bearing,
see differential case assembly pro-
cedure
Before calculation, deterrmne "G"
value by measurmg spacer thxkness If
spacer is deformed or scratched, re-
place
figure wlll he as follows
G
PD-8
Sei number Varlanon number (H)
PO190
Example of calculation
Ex
1 --
A=4, B=3, C=5, D=6
E=O18mm, F=OlSmm
G=O08mm, H'=-2
Left side
Ti =(A- Ct D- H)x00l +E
t205
+ 0 18 + 2 OS
- - [4-5+6-(-2)j ~001
=7 x 001 +O 18 + 2 05
= 007 t 0 18 +2 05
= 2 30
The correct washer IS 2 30 mm
thck
hght side
T, = (B - D t H) x 0 01 t F + G
t 195
+ 0 08 + I 95
+ 195
- -13-6+(-2)] xOOltO15
=(-5) x 001 +O IS t 008
=-005 +O 15 + 008+ 195
=213
The correct wpsher
IS 2 15 mm
Uuck

DIFFERENTIAL CARRIER (Type R200)
Ex 2 .--
A=6, B=6, C=5, D=3
E=O17mm, F-022mm
G=OIOmm, H'=2
Left side
Ti =(A - C t D - H') x 001 +E
=(6- 5 t 3 - 2) x 001 t 0 I7
=2 x 001 +O 17 t 2 05
= 0 02 t 0 I7 + 2 05
= 2 24
The correct washer is 2 25 mm
+ 2 05
+ 2 05
thck
fight side
T, = (B- Dt H') x 001 f F+ G
= (6 - 3 t 2) x 001 f 0 22
= 5 x 0 01 + 0 22 + 0 IO
=005+022tO IO+ 195
= 2 32
t 195
+010+195
t 195
The correct washer is 2 30 mm
thick
Note
If values signifying A, B C and
Dare not gwen, regard them as zero
and compute After assembly, check to
see that
preload and backlash are correct
If
not, readjusl
2 Install differential case assembly
with side bearing outer races into
carrier
3 Insert left and right side bearing
preload adjusting washers
in place be.
tween side bearings and hocsing
4 Drive in side bearing spacer be
tween
R H washer and housmg with
Side Bearing Spacer Drift
KV38100600
If too great or too small
a dnving force
is required, check to be
sure that calculation and side bearing
width are correct
Note When driving spacer into place,
be careful not
to tilt side bearing
outer race
to either side
5 Align mark on bearing cap with
that on carrier and install bearing cap
on Larrier And tighten bolts to speci-
fied torque
@ Side bearing cap bolts
88-98Nm
65 - 72 ft-lb)
(9 0.10 0 kg-m.
PD362
6 Measure ring gear-to-drive pinion
backlash with a dial indicator
If it IS below the specified value,
replace left washer with a thinner one
and right washer with
a thicker one If
it
is over it, replace left washer with a
ttucker one and right washer with a
thinner one
Note To maintain correct preload at
all tunes, do not change total thick-
ness
of washers
Ring gear-todrive pinion backlash
0.13.0.18 mm
(0.0051 .0.0071 in)
SPD513
Incidentally a decrease or increase
in thickness
of washers causes change
in ring gear-to-pinion ba( klash
Thus, check for proprr backldsh
PD-9
7 Check and adjust the tooth con.
tact pattern
of ring gear and drive
pinion
(I) Thoroughly clean ring and drive
pinion gear teeth
(2) Paint ring gear teeth lightly and
evenly with a mixture of powdered
ferric oxide and oil of a suitable con-
sistency to produce a contact pattern
(3) Rotate pinion through several
revolutions in the forward and reverse
direLtion until a definite contact pat-
tern is developed
on ring gear
(4) If contact pattern is incorrect,
readjust thickness
of adjusting washer
Be sure to completely wipe off red
lead upon completion
of adjustment
(5) Incorrect teeth contact pattern
'an be adjusted in the following
manner
Contact pattern
a Heel contact
To correct, increase thickness of
pinion height adjusting washer in order
to bring drive pinion close to ring gear
PO193
b Toecontact
To correct, reduce thickness of
pinion height adjusting washer in order
to make drive pinion move away from
ring gear
PD194