Datsun 1000 Workshop Manual page 90

Differential Case Variation from
Standard Units of 0 001
in
the
present
shim thickness and
a
further 0 002 in
subtracted for
the 2
marking on
the
new pinion
head
Thus 0 004 in
should be subtracted
from
the shint
thickness when
replacing
an
old pinion
marked 2 with
a
new pinion
marked 2
The pinion head thickness
as
calculated in the previous
paragraph
is
an accurate
starting point
for
pinion position
adjustment
but fmal assessment will
be influenced by the
crownwheel tooth
contact
markings
taken after the
crownwheel to pinion
backlash adjustment
has been made
TO ADJUST PINION
BEARING
PRE
LOAD
I With the
selected pinion positioning
shims
fitted
between
the
rear
bearing outer
cone
and the
carrier
instal
the
bearing
spacer
and
original adjusting
washer
to
the
pinion
NOTE Do
not
instal the oil seal
at
this
point but
lubricate
the bearings
2 Insert
the
pmlOn
assembly
into
the
c
rfier
and
through
the
front taper bearing
3 Fit the
pinion flange
washer and retaining
nut
during the
tightening
of the retaining nut rotate
the pinion
to seat
the bearings
NOTE Tighten
the
retaining
nut
a
little
ar
a
time
checking
rhe
bearing
pre
load frequently to
avoid exceeding
the
specified bearing
pre
load and
retaining nut
torque
See
specifications for
permissible
limits
on
bearing
pre
load and
nu t
torque
Rear
Axle 7
If rhe
pre load becomes excessive
before
the
nut
maximum
tightening
torque
is reached
substitute
the
washer
and
or
spacer
for thicker
ones
to
relieve
the
pre
load
t
4
With the retaining
nut
tightened
to
the
correct
torque
check the
torque
required to
rotate
the
pinion
assembly
with
a
pre load measuring
gauge
5 If necessary
adjust
the
bearing
pre load
to
obtain
a
turning torque figure within the specified limits
by
replacing the washer and
or
spacer from the
available
sizes
NOTE Reducing
the
overall length of
the
spacer and
washer will increase the
tuming
torque
Increasing
the
overal length
will reduce rhe
turning
torque
When
used
bearings
are
taken back into service the
pre
load should be
adjusted to
the lower limit
h
t
6 Recheck the pinion position
to
ensure
that there
has been
no
alteration in
height
7 On final assembly
instal
a new
oil seal
tighten
the
retaining
nut to
the
specified torque
and
secure
with
a
new
split pin
TO ASSEMBLE
AND ADJUST DIFFERENTIAL
I
Instal
the side
gears and pinions together
with
mating
thrust washers into their former
positions
in the
differential
case
2 Instal
the
differential shaft aligning the hole in the
shaft with the hole in the
case
for the lock
pin
3
Check the clearance
by
feeler
gauge between
the
side gears and thrust washers
Clearance should be
within
the limits
of 0
10
0 20
mm
0 004 0 008 in If
necessary
replace
the thrust washers to
obtain the
correct
clearance
4
Instal the differential shaft lock
piit
from the
right
side of the
case
and
secure
in position
by peening the hole
5
Position the crownwheel
on
the differential
case
according
to
the
marks
made
on
dismantling
6
Instal the crownwheel
retaining
bolts with
new
lock
plates
Tighten
the
bolts
progressively
a
little
at
a
time
in
a
diagonal pattern
to the
specified
torque
Secure the
bolts
by
turning
the lock
plate
tabs
against
the bolt heads
r
i
NOTE
During
the
tightening procedure lightly
tap each
bolt head to
assist seating of the
crownwheel
on
the
case
7
Provided the
original
differential
case
and carrier
bearings
assemblies
are
to
be used
mount
the differential
case
assembly
with the
original
pre
load shims between the
carrier
bearing inner
cone
and
case
into the carrier
NOTE
Operations
7 and 8
are
only
practical when the
dismanrling
check
on
tooth
contact
pattern backlash and
pre
load
proved satisfactory
However if the differential
case or
carrier
bearings
91