1973 DATSUN B110 Service Repair Manual

CHASSIS

4
Remove
the

side

bearing
caps
and
take
out
the

differential
case

assembly

Fig
PD
8

Removing
differential
case

assembly

Note
Be
careful
not
to
confuse
the

right
and
left
hand

bearing

caps
and

bearing
outer
race
so
that
the

same

parts
are
reassembled
in
the

original

positions

5
Remove

the
side

bearing
by
the

use
of
a
Gear
Carrier

Side

Bearing
Puller

ST3305S001

o

Fig
PD
9

Removing
side

bearing

Note
a
The

puller
should
be
handled
with
care
in

catching
the

edge
of

bearing
inner
race

b
Care
should
be
taken
not
to
confuse
the

right

and
left
hand

parts
6
Remove
the

hypoid
gear
by
spreading
out
the
luck

strap
and

loosening
the
drive

gear
bolts

4

i

T
II

10

Fig
PD
I0

Removing
drive

gear

Note
Loosen
the
bolts
in
a

diagonal
line

7

Measure
backlash
between
the
side

gear
and
the

pinion
mate

using
a
dial

indicator

8

Drive

out
the

pinion
shaft
lock

pin
from

the
left
side

from
the
side
of
the

drive

gear
to
the

right
side

by
using

the

Fork
Rod
Pin
Punch
ST23520000

ST23520000

Fig
PD
l1

Removing
lock

pin

9

Draw
out
the

pinion
shaft
and
take

out
the

mate

pinions
side

gears
and
thrust
washers

Note
The

gears
as
well
as
thrust
washers
should
be

marked
or

preseNed
separately
as
left
and

right

front
and

rear

PD
6

PROPELLER
SHAFT
DIFFERENTIAL
CARRIER

10

Measure
the
initial

turning
torque
drive

pinion
gear

by
using
Drive

Pinion
Preload

Gauge
Sn127S000

11

Remove
the

drive

pinion
nut
and
draw

out
the

companion
flange

assembly

Note

Use
the

Drive
Pinion

Flange
Wrench
to
hold
the

companion
flange
IST31540000

Fig
PD
12

Removing
drive

pinion
unit

12

Remove
the
drive

pinion
assembly
to
the

rearward

by
tapping
the
front
end
with
a

plastic
mallet

The
drive

pinion
can
be

taken
out

together
with
the

INSPECTION
AND
REPAIR
inner
race

of
rear

bearing
bearing
spacer
and

adjusting

washer

13
Remove
the
oil
seal
and
take

out
the

front

bearing

inner

race

Note
The
removed
oil
seal
should
not

be
reused

14
Draw
out
the

outer
races
of
both

front
and

rear

bearings
using
drift

15
Draw

out
drive

pinion
rear

bearing
inner

race

using

Drive

Pinion
Rear
Inner

Race

Replacer
ST30031000

ST30031
000

AI
n

Fig
PD
13

Removing
bearing

10

y@

@
0

0
0

00
eo

00

j
l

I

@

o

q@

@

t
I
7

c9
@
@@

@

l2

4
o

OO

r
j

T

I

i
cb
3

0

0

Fig
PD
14
Gear

carrier
and

gear

PD
7
1

2

3

4

S

6

7

8

9

10

II

12

IJ

14

IS

16

17

18

19

20

21

22

23

24

25
Drive

pinion
nut

Drive

pinion
washer

Companion
flange

Oil
seal

Front

bearing

Gear
carrier

Pinion

mate
thrust
washer

Pinion
mate

Pinion
shaft

lock

pin

Pinion
mate
shaft

Side

gear
thrust
washer

Side

gear

Pinion

bearing
spacer

Rear

bearing

Drive

pinion
adjusting
washer

o
rive

pinion

Bearing
cap
bolt

Lock
washer

Bearing
cap

Side

bearing

Side

bearing
adjusting
shim

Drive

gear
bolt

Lock

strap

Differential
case

D

rive

gear

CHASSIS

Before

inspecting
various

parts
thoroughly
wash

them

so
that

damage
and
wear

can
be

easily
detected

Then

proceed
as

follows

Check

gear
teeth
for

scoring
cracking
and

chipping

and
make

sure
that
tooth

pattern
indicates

correct

meshing
depth

If

any
defect
is
evident

replace
parts
as

required

Note
Drive

pinion
and
drive

gear
are
supplied
for

replacement
as
a
set
therefore

should
either

part

be

damaged
replace
as
a
set

Check
the

pinion
gear
shaft
and

pinion
gear
mating

faces
for

scoring
and

signs
of
wear
and

replace
as

required

Follow
the
same

procedure
for
inner

faces
of
side

gear

and
their
seats

on
differential
case

3

Inspect
all

bearing
races

and
rollers

for

scoring

chipping
or
evidence
of
excessive
wear

They
should
be

in

tiptop
condition
not
worn
with

mirror
like
surfaces

Replace
if
there
is
a
doubt
on
their

efficiency
since

an

incorrect

bearing
operation

may
result
in
noisiness

and

gear
seizure

4

Inspect
thrust
washer
faces

Small
defects
can
be
corrected
with

emery
paper
In

ASSEMBLY
AND
AD
JUSTMENT

Tightening
torque
of
side

bearing

cap
bolts

5
to

6kg
m
36
2
to

43
4
ft
lb

co

g

E

E

on

N
case
the
clearance
between
the
side

gear
and
thrust
washer

exceeds
0
2

mm
0
0079
in

replace
the
thrust
washers

Three
kinds

of
thrust
washers

are
available

5

Measure
run
out
of
the
drive

gear
at
the

rear
side

using
a
dial
indicator

When
the

run
out
is

more
0

05

mm
0
0020

in

replace

the
drive

gear
and

pinion
gear
as
a
set

Fig
PD
15

Measuring
run
out

of
drive

gear

6

Inspect
carrier
and
differential

case
for
cracks
or

distortion

Replace
defective

parts
as

required

Adjust

spacer
of

adjusting
drive

pinion

without

drive

gear
oil
seal
Preload
for

pinion

bearing
6
to
8

kg
em
5
2
to
6
9
in
Ib

1

9
to
2
6

kg
4
2
to
5
7
Ib
at
bolt
hole

1

Tightening
torque
of
drive

pinion
nut

12

to
17

kg
m

86
8

to
122

9
ft

Ibl

Fig
PD
16
Carrier

section

PO
8

PROPELLER
SHAFT
DIFFERENTIAL

CARRIER

Reassemble
the

differential
carrier
in
reverse
order

of

disassembly
The

following
instructions

for

adjustment

and

usage
of

special
tuols
are

essential
to

obtain

perfect

differential

operation

Assembling
differential

gear
case

1
Assemble
the

pinion
mate
side

gear
and
thrust

washer
in
the

differential
case

2

Adjust
clearance
between
the

side

gear
and
thrust

washer
within
0

10
to

0
20
mm
0

004
to
0

008
in

by

selecting
side

gear
thrust
washer

Fig
PD
17

Measuring
clearance

Side

gear
thrust
washers

Thickness
mm
in

0
76
to
0
81
0

0299
to
0
0139

0
81
to
0
86
0

0319
to
0

0339

0
86
to
0
91
0

0339
to
0
0358

3
Fit
the

pinion
lock

pin
from
the

right
side
of
the
case

opposite
side

of
drive

gear
and

peen
the
hole
rim
over
to

prevent
the
lock

pin
vibrating
loose

4

Bolt
the
drive

gear
to
differential

case

Only
genuine
drive

gear
bolts

and
new
lock
bolt

straps

should
be
used
Tighten
the
bolts

by
tapping
lightly
the

head
of
the

bolt

by
a
0
1

kg

l
4lb

hammer

The
drive

gear
bolts
should
be

tightened
in

a

diagonal

line
The

tightening

torque
should
be

6
to
7

kg
m

43
4

to
50
6
ft

lb

Fig
PD
18

Tapping
bolt

head

5
Press
the
side

bearing
inner
race
on
the
differential

case

using
a
Side

Bearing
Drift
ST33220000

cf

ST33220000

F

ig
p
19

Pressing
side

bearing
inner
race

Note
It
is

important
to
fit
the
drive

gear
adjusting
shims

behind
the

bearings
to
obtain

proper
preload
and

mounting
of

gear
teeth

The

procedure
for

adjustment
is

d
ibed
in

fourthcoming

page
in
detail
and
therefore

no

instruction
is

given
here

PD
9

CHASSIS

Setting
and

adjusting
drive

pinion

Pinion

height
is

adjusted
with

pinion
adjusting
washer

behind
the
drive

pinion
gear

Tolerance

from
the

standard
size

up
to
the
drive

gear

center
is
indicated
on
the

drive

pinion

top
When

tolerance

is

larger
than
the
standard

size
it
is
ac

companied
with
mark

and
with
mark

when
smaller

The
numeral

following
the
mark
is
a

figure

multiplied
by

100

HEAD

NUMBER

FiR
PD
20
Drive

pinion
head
mark

Install

the
drive

pinion
outer
races
both
front

and

rear
into

gear
carrier

using
Drive
Pinion
Outer
Race
Drift

Set
STJ061
1000
STJ0612000
and

Sn0614000

Froot

STJ061
1000
and
STJ0614000

Rear

STJ061
1000

and
STJ0612000

2
Install

the
drive

pinion
adjusting
washer
and
rear

bearing
on
the

Dummy
Shaft
STJI122000

3
Install

the

Dummy
Shaft

on
the
fmal
drive

housing

without

using
drive

pinion
adjusting
spacer
and
install
the

pinion
front

bearing
and

companion
flange

4

Tighten
the
drive

pinion
lock
nut
to

the
rated

preload
by
the
use
of
a

Drive
Pinion

Flange
Wrench

SnI540000

Drive

pinion

bearing
preload
without
oil
seal

6
to
8

kg
cm
5
2
to

6
9
in
lb

At

companion

flange
bolt

hole

19

to
2
6

kg
4
2

to
5

7lb

PD
l0
Fig
PD
21

Measuring
pinion
preload

Note

Be
careful

not
to

tighten

excessively
or
otherwise

the

bearing
will
be

damaged
since

pinion
bearing

adjusting

spacer
has
not
been

applied

5

Install
a

Height
Gauge
STJI12l000
on
the

flnal

drive

housing
and

measure

gap
with
a

thickness

gauge

ST31122000

Fig
PD
22

Measuring
clearance

r

ST31121000

ST31122000

Fig
PD
23

Adjusting
pinion
height

PROPELLER
SHAFT
DIFFERENTIAL
CARRIER

6

Formula
to

calculate
thickness
of
drive

pinion

adjusting
shims

T
W
N
H
x
0
01
0
2
mm

Where
W
Thickness
of
shim
inserted
mm

T
Required
thickness
of

rear
bearing
ad

justing
shim

mm

N
Measured
clearance
between

Height

Gauge
and

Dummy
Shaft
face

mm

H

Figure
marked
on
the
drive

pinion
head

Example
W
2

92
mm

N
0
3
mm

H
1

T
2
92
0
3
1

x
0
01

0
2

3
03
mm

Use
a
3

04
mm
washer

7
Remove
the

Dummy
Shaft
from
the

gear
carrier

housing

8

Withdraw
the

pinion
rear

bearing
from
the

Dummy

Shaft

apply
a
shims

selected
based
on
the
above
formula

and
refit
the

pinion
rear

bearing
and
drive

pinion
together

using
Drive
Pinion

Bearing
Drift

STJ0600000

Note
Be
sure
to

face
inside
faced
surface
of
the
shimes

toward
back
of

the

pinion
gear

Drive

pinion
height
adjusting
shims

Thickness
mm
in

Thickness
mm
in

2
74
0
1079

2
77
0
i091

2
80
0

1102

2
83
0
1114

2
86
0
1126

2
89
0
1138

2

92
0

1150

2

95
0
1161

2

98
0
1173
3
01

0
1185

3

04
0
1197

3
07

0
1209

3

10
0
i
220

3
13
0
1232

3
16
0
1244

319
0
1256

3

22
0
1268

3
25
0

1280

PD
Adjusting
drive

pinion

preload

Adjust
the

preload
of
drive

pinion
with

collapsible

spacer

This

procedure
has

nothing
to
do
with
thickness

of

pinion
height
adjusting
washer

Note
Reuse
of
a

collapsible

spacer
must
not
be
allowed

After

adjusting
pinion
height
lubricate

front

bearing

with

gear
oil
and

place
it
in
carrier

2
Install

a
new
oil
seal
in
carrier
Lubricate

cavity

between
seal

lips
with

grease
when

installing

3
Place

a
new

collapsible
spacer
on
drive

pinion
and

lubricate

pinion
rear

bearing
with

gear
oil

4
Insert

companion
flange
into
oil

seal
and

hold
it

firmly
against
pinion
fron

bearing
cone
From
the

rear
of

the
carrier
insert
drive

pinion
into

companion
flange

5
Ascertain
that
threaded

portion
of
drive

pinion
a

new

pinion
nut
and
washer

are
free
from
oil
or

grease

6

Holding
companion
flange
with
Drive
Pinion

Flange

Wrench
ST31540000

tighten
nut
and

then
drive

pinion
is

pulled
into
front

bearing
cone
and

into

flange

As
drive

pinion
is

pulled
into
front

bearing
cone
drive

pinion
end

play
is
reduced

While
there
is
still
end

play
in

drive

pinion
companion
flange
and
cone
will
be
felt
to

bottom
This
indicates
that

bearing
cone
and

companion

flange
have
bottomed
on

collapsible

spacer

From
this

point
a
much

greater
torque
must
be

applied
to
turn

pinion
nut
since

spacer
must
be

collapsed

From
this

point
nut
should
also
be

tightened
very
slowly

and
drive

pinion
end

play
checked
often
so
that

pinion

bearing
preload
does

not
exceed
the
limits

When
the
drive

pinion
end

play
is

eliminated
the

specified
preload
is

being
approached
Replace
collapsible

spacer
if
this

specification
is
exceeded

Note
Do
not
decrease

preload
by

loosening
pinion
nut

This
will

remove
compression
between

pinion
front

and

rear

bearing
cones
and

collapsible
spacer
and

may
permit
front

bearing
cone
to
turn
on
drive

pinion
moreover
nut
becomes
loose

CHASSIS

7
Turn
drive

pinion
in
both
directions
several
times
to

set

bearing
rollers
And

adjust
bearing
preload
to

specifi

cations

Drive

pinion
bearing
preload
with

oil
seal

7

to
9

kg
cm
6
1

to
7

8
in
1b

At

companion

flange
bolt
hole

2
25
to
2
95

kg
4

96
to
6
50

1b

Pinion
nut

tightening
torque

12

to
17

kg
m

86
8
to
122
9
ft

1b

Fig
PD
24

Measuring
pinion
preload

Setting
and

adjusting
side

bearing
shims

When

reassembling
the
side

bearing
without
replacing

be

sure
to

install
a
shim

having
same
thickness
as
that

before

disassembly

The

following
instructions

apply
when
the

hearing
is

replaced

I
Place
an

approximately
2
5

kg
5

5
Ib

weight
on
the

side

bearing
and

measure

bearing
thickness

ST3250S000

Standard
side

bearing
width

17
5

mm
0
689
in
Note
With
the

weight
placed
on
the
side

bearing
turn

the

bearing
two
to
three
turns
and
measure

thickn

1

ST3250S000

Fig
PD
25

Measuring
for
bearing

2
Side

bearing
adjusting
shim
thickness

calculating

formula

Left
side
drive

gear
side

Tl
A
C
D
H
xO

01
0
2
E
mm

Right
side

pinion
mate
side

T

2
B
D
H
x
0
01
0
2
F

mm

Figures
for
A
B

C
D
and
H

are
dimensional

variations
in
a
unit

of
1
100

mm

against
each
standard

measurement

Where
A
The

figure
marked
on
the

left
side

bearing
housing
of

gear
carrier

The

figure
marked
on
the

right
side

bearing
housing
of

gear
carrier

The

figure
marked
on
the
differential

case
B

C
D

E
F
These
are
differences
in
width
of
left

or

right
side

bearing
against
the

standard

width
17
5
mm

0
6890
in

Figure
is

given
in
a

unit
of
1

100
mm

PD
12

PROPELLER
SHAFT
DIFFERENTIAL
CARRIER

C
DMark

Unit
mm

in

Fig
PD
26
Thickness

of
shim
on

left
side

Thickness

of
shim
on

right
side

H
The

figure
marked
on

the

ring
gear

Example
of

calculation

A
I
B
2

E
0
02
mni

Left
side
C
2
D
3

F

O
Olmm
H
1

TJ
1
2
3
1

xO
01
0
2
0
02
0
23

mm

Right
side

T

2
2
3
1
x

0
01
0
2
0
01
0
19
mm

Apply
a
0
23

mm
shim
and
0
19

mm
shim

respectively

to
the

left
and

right
and
fit
the
side

bearing
using

Differential
Side

Bearing
Drift
ST33220000

Side

bearing
adjusting
shims

Thickness

mm
in

0
05
0
0020

0
07
0
0028

0
10
0
0039

0
20
0
0079

0
50
0
0197

PD
13
3
Install
the
differential

case
assembly
together
with

the
side

bearing
outer
race
on
the
final
drive

housing

Note
Be
careful
not
to
confuse
the

right
and

left
sides
of

the
side

bearing
housing

4

Install
the

bearing
cap
and

tighten
the
installation

bolt
to
the
rated

tightening
torque

Bearing
cap

tightening
torque

5
to
6

kg
m
36
2
to
43
4
ft
1b

Fig
PD
27

Measuring
tightening

torque

Note
Be

sure
to

align
match
mark

put
before
disas

sembly
correctly

5
Measure
L

dimension
between
left
and

right

bearing
cap
edges
by
a
micrometer

L
dimension

153
40
to

153
55
mm
6
0394
to
6
0453
in

6

Upon
completion
of

reassembly
measure
drive

pinion
ring
gear
backlash
When
backlash
is
less
than

the

rated
value
move
the
side

bearing

adjusting
shim
from
the

left

side

ring
gear
side
to
the

right
side

When
backlash
is

more
than
the
rated
value

move
the

side

bearing
from
the

right
to
left

contrarily

Backlash

0
10

to
0
15

mm
0
0039
to
0

0059
in