Differential Gear Cage Assembling; Side Gear Thrust Washers; Adjusting The Drive Pinion/Drive Pinion Preload - Datsun 510 series Workshop Manual

Check the
run out
of the crownwheel
as
shown in Fig G 15
Position the dial
gauge to
the
rear
of the crownwheel and check
that the
run out
does
not ceed 0 0
mm
0 0020
10
I
It the
run
out limit is exceeded
replace
the crownwheel and
pinion
as
a
t
Inspect
the differenti l
L
arrier nd
case
for cracks
or
distortion and
replace
them if
necessary
DIFFERENTIAL GEAR CAGE
Assembli
g
V
Install the differential side
geaI 5
pinions and original thrust
washers into the
cage
and check the clearance between side
gears
and thrust washers
The clearance
must
be
adjusted
to within
0 05
0 20
mm
0 002 0 008 in for the 1400 and 1600
cc
models and
to within 0 10 0 20
mIT
0 004 0 008
in
for the
1800
cc
models Correction
can be made if necessary by replacing
the thrust washers which
are
available in the following
sizes
t
SIDE GEAR THRUST WASHERS
f
1400 and 1600
cc
Estate
car
0 78 0 83 0 88 103
1 2 3
mm
0 0030 0 0327 0 0346
0 0406 0 0484
in
l800cc Estate
car
0 785 0 835 0 885 1 035 I
185
mm
0 0309 0 0329 0 0348 0 0408
0 0467 in
1800
cc Van
0 75
0 80
mm
0 80 0 85
mm
0 85
0 90
mm
0 90 0 95
mm
0 0295 0 0315 in 0 0315
0 0335 in 0 0335 in 0 0354
in
0 0354 0 0374 in
Drive in the differential
pinion
lock
pin
from
the
right hand
side of the
case
and peen the rim of the hole
to
prevent the pin
from
working
loose
Fit the
crownwheel to the differential
cage and install the
bolts and
new
lock
plates Tap
the head of each bolt
lightly
and
tighten
the bolts in
a
diagonal
pattern
to
the
specified
torque
readings
Press in the side bearing
inner
race
with
a
suitable drift
The
crown
wheel
adjusting
shims
must
be
placed
behind the
bearings to
obtain the
correct
pre load Press the drive
pinion
rear
bearing
outer
race
and front
bearing
outer
race
into the
carrier
The shim
at the
rear
of the
outer race must
be increased
or
decreased
to
adjust
the
pinion height
as
described below
Adjusting
the drive
pinion
The pinion height
or
distance from the face of the
pinion
to
the axis of the crownwheel is
adjusted by altering
the thick
ness
of the adjusting
shim between the drive
pinion
gear
and
the
rear bearing
cone
The drive
pinion
ha
a
tolerance mark
etched
on
its face
as
shown in Fig G 26 This tolerance is
accompanied by
a or
sign
to
show the deviation from the
nominal dimension of 86mm
0 3 86 in
see
Fig C n The
plus
sign
indicates that the nominal dimension
must
be increased
by
the
figure
on
the
pinion
and the minus
sign
that it
must
b
decreased
To determine the thickness of the drive
pinion
shim press
the front and
rear
bearing
outer
races
into the carrier fit the
70
rear
be ring and dummy shafr and place
the
Ippropriatt ettil1g
gauge on
the carrier See
Fig
C 2S l The
fOllowing setting
gaUges
and
dUlllmy
shaft
houlJ bt
llsed
for
th various modds
I OO and
1600
Estate
c r Setting
g 3uge
ST 1941000
Dummy shaftST 31942000
ISOOce Estate
car Setting gauge
ST 31141000
Dummy
shaftST 1941000
1800cc
V
n
Setting
gauge
5T 3 I
Y41
000
Dummy
sh ftST 31941000
Measure the clearance N
Fig
C l8 berween the
tip
of
the
setting
gauge and the face of the
dummy
shaft with
a
feeler
gauge
Determine the thickness of shim required using
the
following formula
T N
H D S
x
0 01 0 28 station
wagon
T N H D S
x
0 01 2 18 Van
Whe
rc
T The
required
thickness of
adjusting
shim
mrn
N The measured clearance
mm
H The plus
or
minus figure
on
the pinion head
D The
figure
on
the
dummy
shaft
S The
figure
on
the
setting
gauge
As
an
example
for the Estate
car
N 0 30mm
H 1 D I S O
T 0 30 2 1 0
x
0 01 0 28 0 59
mm
Shims
are
available in thicknesses of 0 050 0 070 0 10
0 20 and 0 50
mID
0 0019 0 0027
0 0039 0 0078 and
0 0196 in for the Estate
cars
and in thicknesses of 2 37 2 97mm
0 0933 0 1169 in for the 1800cc Van
Take off the drive
pinion
and the
rear
bearing
outer
race
and
adjust
the
position
of the drive
pinion by installing shims
of selected thicknesses
Fit the drive pinion and bearing
spacer
in
the pinion housing
and
tighten
the drive
pinion
nut to
a
torque
reading
of 14 17
kgm
101 130 Ib fl for the Estate
cars or
13
20
kgm 94 145I b ft for the 1800
cc
Van
Adjusting the drive
pinion preload
The drive pinion preload
on
Estate
car
models is adjusted
by
meam
of the adjusting
spacer
and the shims between the
spacer and the front
bearing
inner
race
On the 1800
cc van a collapsible
pacer
is
u s ed
to
adjust
the preload
Estate
car
O1eck the preload by attaching
a
preload
gauge to
the
pinion flange
and adjust by selecting
spacers
and shims from the
sizes given in Technical Data The initial
turning torque
without
the oil seal and with the drive
pinion
nut
tightened
to
a torque
reading of
14
17 kgm 101 130 Ib ft should be 10 13
kg m
138 9 180 5 in
oz
for
new bearings
If used
bearings
are
fiued the initial torque
must
be reduced
by
20
to
40 Cneck
the
pinion height
as
previously
described and
re adjust
if
necessary
Remove the pinion
nut
and nange Press the
new
oil seal
into the carrier
ensuring
that the
lips
of the seal
are
thoroughly