Datsun 1000 - TO ADJUST PINION BEARING PRE-LOAD

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
overallength
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
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