oil DATSUN 610 1969 Owner's Guide

FOUR
SPEED
GEARBOX
Removal
and
Installation

The
removal
and
installation

procedures
for
the
four

speed

gearbox
are
similar
to

those

previously
described
for
the

three

speed
gearbox
However
the
floor
mounted

gear
lever
must
be

removed
from
the
controllevef
bracket
in
addition
to

the

operations
already
detailed

FOUR
SPEED
GEARBOX

Dismantling

Drain
the
oil
from
the

gearbox
Remove
the
dust
coveT
and

release
the

spring
securing
the
clutch
withdrawal
lever
Remove

the
withdrawal
lever
and
release

bearing
from
the
clutch

housing

as
described
in
the
section
CLurCH
Remove
the
clevis

pin

securing
the

striking
rod
to
the
control
lever

Remove

the
speedometer
drive

pinion
assembly
and
with

draw
the
rear

extension

housing
Disengage
the

striking
rod
from

the
selector
rod

gates
Remove
the

gearbox
covers
See

Figs
F
26

and
F
27

Unscrew
the
three
detent
ball

plugs
and
remove
the

spriags

and
detent
balls
Drive
out
the

pins
securing
the
selector
forks

to
the
rods
and
withdraw
the
forks
and
rods
Lock
the
main

shaft

by
moving
the
first
second
and
third
fourth

coupling
sleeve

into

gear
at
the
same
time
and
release
the
ffiainshaft
nut

Remove
the
countershaft
and
the
gear
cluster

together

with
the
two
needle
roller

bearings
and

spacers
Remove
the

snap
ring
holding
the
revep
e

idler

gear
and
withdraw
the
reverse

idler

gears
and
shaft

Fig
F
28

Take
off

the
bolts

securing
the
mainshaft

bearing
retainer

to
the

gearbox
case

Fig
F
29
Withdraw
the
mainshaft

assembly
Fig
F
30
and
the
main
drive
shaft

The
mainshaft
can
be
dismantled
in
the

following
manner

Release
the
third
fourth

synchronizer
unit

snap
ring
and
with

draw
the
hub

complete
with

coupling
sleeve
Remove
the
third

speed
gearwheel
and
the
needle
roller

bearing
from
the
main

shaft
Take
off
the
mainshaft
nut
and

locking
plate
Remove
the

speedometer
drive

gear
with
the

retaining
ball
Withdraw
the

mainshaft
reverse

gear
and
the
hub
Press
off

the
mainshaft

bearing
complete
with
the

bearing
retainer

Remove
the
thrust
washer
and
the
first

speed
gear
together

with
the
needle
roller

bearing
taking
care
not
to
lose
the
small

baU
used
to

locate
the
thrust
washer
Slide
off

the
first

speed

gearwheel
bush
Withdraw
the
first
second

synchronizer
and

hub
Remove
the
second

speed
gearwheel
and
needle
roller

bearing

FOUR
SPEED

GEARBOX
Installation

Refer
to

the
instructions

given
for
the
three

speed
gearbox

and
to
Technical
Data
for
the

specifications
applicable
to
the

different

gearboxes

FOUR
SPEED
GEARBOX

Assembly

Assembly
of

the

gearbox
is
similar
to
the

procedures

previously
described
for
the
three

speed
gearbox
with
the

following
exceptions
When

assembling
the
main
drive

gear
bearing
on
the
shaft

insiall

the

spacer
and
select
a
new

snap
ring
to
eliminate
all
end

float

between
bearing
and

snap
ring
Snap
rings
are
available
in

five
thicknesses
from
1
52
1
77mm
0
06
0
07
in

The

assembly
procedures
for

the
Warner

type
synchronizers

are
similar
to
the
instructions

previously
described
for
the
three

speed
gearbox
Refer
to
THREE
SPEED
GEARBOX

Assembly

for
further
details

To
assemble
the
Servo
F4C63

type
synchronizers
proceed

as
follows

Place
the

gear
on
a

clean
flat
surface
and
install
the

synchronizer
ring
on
the
inner
side
of
theclutch
gear
Fit
the

thrust
block
into

place
as
shown
in
Fig
F
31
Place
the
anchor

block
and
brake
band
into

position
and
fit
the

circlip
into
the

groove
in
the

gear
to
secure
the

synchromesh
assembly

When

assembling
the
mainshaft
select
a

snap
ring
which

will

give
an
end
float
between
0
05
0
15
mm
0
002
0
006in

to
the
third

speed
gearwheel
Snap
rings
are

available
in
five

sizes
from
1
40
mm

0
0551
in
to
1
60
mm
0
0630
in
thick

ness

Tighten
the
locknut
at

the
rear

of
the
mainshaft
to
a

torque
reading
of
7
1

kgm
51
87Ib
ft

Assemble
the
reverse
idler

gear
as
shown
in
Fig
F
32
The

reverse
idler
driven

gear
3
should
be

placed
on
the
end
of
the

reverse
shaft
1
with
the

longest
spline
and
retained
with
a

suitable

snap
ring
2
Install
the
reverse
shaft
and

gear
assembly

into
the

gearbox
case
from
the
rear
with
the
thrust
washer
4

between
the

gear
and
the
case

Fit
the
thrust
washer
5
and

idler
gear
6
18
teeth
and
secure
with
a
suitable

snap
ring

2
The
end
float
of
the

gear
should
be
checked
and

adjusted

to

0
1
O
3mm
0
004
0
012
in

by
selecting
a
suitable

snap

ring
2
Five
thicknesses
of

snap
rings
are
available
from
I
lmm

0
043in
to
1
5mm
0
06in
See
Technical
Data
for
F4W63

and
F4C63

gearboxes
Adjust
the
counter

gear
end
float
to

0
05
0
15
mm
0
002
0
006in

by
selecting
a
thrust
washer

of

the

required
thickness
Thrust
washers
are
available
in

five

thicknesses
from
2
40
2
60
mm
0
094
0
102
in

When

assembling
the
selector
mechanisms

Fig
F
33
fit

the
first
second
selector
forks
I
and
the
third
fourth
selector

forks
2
onto
the

coupling
sleeves
and
insert
the
first
second

fork
rod
3

Fit
an

interlock
plunger
4
and
the
third
fourth

speed

selector
rod
5
Do
not

forget
the
interlock

pin
7
A
section

through
the
selector
and
interlock
mechanism
is

given
in

Fig

F
34
Install
an

interlock

plunger
6
and
assemble
the
reverse

selector
fork
8
and
fork
rod
9
Secure
the
selector
forks
to

the
rods
with
the

retaining
pins
10

Place
a
check
ball

and
spring
into
each
of
the
holes
and

screw

the

plug
down
to
a

torque
reading
of
1
7
2
1

Jegm

12
3
15
2
Ib
ft
after

coating
the
threads
with
sealing
com

pound

Install
the
rear
extension

housing
engaging
the

striking
rod

with
the
fork

rod

gates
and

tighten
the

housing
bolts
to

a

torque
reading
of
1
6
2
5

kgm
12
18Ib
ft
Fit
the
front

and
bottom
covers
and

tighten
the
bolts
to

a

torque
reading

of
1
1
1
8

kgm
8
13Ib
ft

57

inter
E
lill
j

lll
jIl

1

3

I

i

1r
I
An
t

1
ll

1
11
5
85

1
Sleeve

voke
arsembh

Bearillg
race
assembh

Jvumal
asst

mb
r

4

Snap

ring

5

Prope
ier
shaft
tube
assl

mblv

6
flan

oke
2

O

L

l
OIlU

39
I

JII

I

I

i
i

3

1
378

@
Fig
G
I
Section

through
the

propeller
shaft
Unit

mm
in

@
@

j

c

@

I
I

i

@

@

@

J

q

cJi
y

j

rID

@

62
Fig
G
2
Section

through
the
differential
carrier

1

Supply
rrwlti

purpose
gTet1M
to

oil
seal

lip
when
ass

mb1ing

Pinion

bearing
adjusting
lWSher

Adjust
pinion
ber
uing

X
eload

by

selecting
2
and
3

Pinio

bearing

adjusting
spacer

4
PInion

height
adiustinx
MUS1m

5
Lock

strap

6

Ring
gear
bolts
T
7

0
to

8
0

kgm

50
6
ro
578

bIt

TIghten
by
tapping
bolt
head
with

Jj41b3
hamTMr

7
Lock

pin

8
Rear
cover

9

Ring
gmr

10

Diff
mounting
member

1
J
Bolt

diff
to

diff
mounting
member

T
6
0
to
8

0kKm
43
4
0
7
8

b
ft

12

ShIlf

pinion
m1te

13
Thnl

lWlJIJer

14
Pinion
mate

15
17vust
washer

Adjust
the
backla
h
in

pinion
mate

and
ide

gear
or
the
clearance

betwun
the

differential
ctlSI

and
the

rear

fact
ofridt
gror
to
0
1
to
0
2

mm

0
0039
0
0

0079
bv
16

16
Side
ar

17

BoltsideflilngeT
1
9to

6kgm

13
710
18

8Ib
f

18
Oil
tal

Supply
chassi

grea
e
to
oil

seal

lip
Vtlhen

autmbling

19
Side

flange

20
Side

retainer

21
Bolt
side
retainer
T
0
9
to
1
2

kgm

6
5
to
8
71b

22

ring

23

Side
bearing

24

Diff
Gear
case

25
Pinion
rear

bearing

26
Dril
e

pinion
27
Pinion

front
bearing

28

Spacer
front
pilot
beaTing

29
Front

pilot
bearing

30
Oil
seal

3J

CompanionfliInge

32
Dri

pinion
nut
T
17

to
20

Jwn

122
9
0144

6Ib
fI

Propeller
Shaft
and

DIfferentIaJ

DESCRIPTION

PROPELLER
SHAFT

DIFFERENTIAL

Removal
and

Dismantling

DIFFERENTIAL

Assembly
and

Adj
Jstment

DIFFERENTIAL

Installation

DIFFERENTIAL
Estate
car
and
van

TOOTH
CONTACT

PATTERN

Checking

DESCRIPTION

The
tubular
steel

propeller
shafts
are
shown

in
Fig
G
1

The
shaft
is
connected
to
the
drive

pinion

flange
by
a

yoke

flange
at
the
rear
and
to

the
transmission

output
shaft

by
a

splined
yoke
sleeve

at
the
front
The
Datsum

I800ce
station

wagon
and
van
has
a
three

section
shaft

in
contrast
to
the
two

piece
shaft

used
on

the
other
models
covered

by
this
manual

The
differential

carrier
houses
a

hypoid
bevel

gear
assembly

Although
this
manual
contains

dismantling
and

adjustment

procedures
for

the
differential

assembly
it
must

be

pointed
out

that

only
workshops
with

specialized
tools
and

equipment
will

be
able
to

carry
out
the
work

involved

PROPELLER

SHAFT
Removal

1
Release

the
hand
brake

jack

up
the
vehicle
at
the
fear

and

support
it
on
stands

2

Loosen
the

clamps
and
turn
the

pre
silencer
to
the
left

saloon

only

3
Remove
the

adjuster
nut
from

the
handbrake
cable
rear

adjuster
and
disconnect
the
left
hand
cable
Saloon

only

Remove
the
bolts

securing
the
centre

bearing
bracket

1800
cc

stati
n

wagon

4
Disconnect

the
fear

flange
from
the
rear

axle

flange
With

draw

the

propeller
shaft
to
the
rear

away
from
the

gear

box
mainshaft
Take
care

that
the
shaft
is
not

dropped

during
removal
or

the
balance
of
the
shaft

may
be
altered

5

Plug
the

gearbox
rear

extension
to

prevent
the
loss
of
oil

PROPELLER
SHAFT

Dismantling
and

Inspection

Oean

all

components
and
mark
them
before

dismantling

so
that

they
can
be

reassembled
in
their

original
positions

Correct

reassembly
is
most

important
otherwise

the
balance

of
the
shaft

may
be
affected

Remove

the
four

snap
rings
from
the

journal
assembly
and

withdraw

the
needle

bearing

cap
by
tapping
the

yoke
with
a

wooden
mallet

The
wear
on

the

spider
journal
diameter
must
not
exceed

0
15mm
0
006
in
the

standard
size
of

a
new

journal
is
14
7mm

0
579

in
Check
the

spider
seal

rings
and

replace
them
if

necessary
The
radial

backlash
of
the
sleeve

yoke
splines
to

gearbox
splines
should
not

exceed
0
5mm

0
002
in
Renew

the
sleeve

yoke
if
the

figures
are
in
excess
of
the

specified
value

E
Mount
the
shaft
between
the
centres
of
a
suitable
fixture

and
use
a
dial

gauge
to

check
that
the
run
out
of

the
shaft

does

not

exceed
0
6mm
0
024
in
at
the
centre
of
the
tubular

portion

The
shaft
can

only
be

straightened
with
a

hydraulic

press
it
is

advisable
however
to
renew

the
shaft
if

the
run
out

is
excessive

Check
that
the

dynamic
balance
of

the
shaft

does
not

exceed
15

grm
cm
0
208
oz
in
at
4000
r

p
m

PROPELLER
SHAFT

Assembly
and
11Istallation
r

Assembly
and

installation
is
a

reversal
of

the
removal
and

dismantling
procedures
not
the

following
points

Grease
the
needle
rollers
with
wheel

bearing

grease
before

placing
them
into
the

bearing
race

Lubricate
all

splines
with

gear
oil

Adjust
the

journal
radial
end
float
to
within
0
02mm

0
0008
in

using
a
suitable

snap
ring
Snap
rings
are
available

in

eight
thicknesses
from

2
00mm
0
079
in
to

2
14mm

0
084
in
and
are
colour
coded
as
detailed
in
Technical
Data

at
the

end
of

this
section

DIFFERENTIAL
Removal

Saloons
with

independent
rear

suspension

Remove
the
hand

brake
rear

cable
remove

the

propeller

shaft

and
drive
shafts
as
described
in
their
relevant
sections

2

Support
the
differential

with

ajack
and
remove

the
nuts

securing
the
differential

mounting
crossmemb
er

Fig
G
3

3
Remove
the
bolts

holding
the
differential
to
the

suspension

member
Withdraw
the
differential

and
jack
to

the
rear

4

Support
the

suspension
member
with

a
stand
to

prevent

the

mountings
from

becoming
twisted
or

damaged

DIFFERENTIAL

Dismantling

Before

dismantling
place
the
carrier

assembly
in
a
suitable

mounting
stand
or

special
stand
ST

06270001
and

carry
out

preliminary
checks
as
follows

Check
the
tooth
contact

pattern
of
the
crownwheel
and

pinion
by
applying
lead

oxide
to
three
or
four

teeth
of

the

crownwheel
Turn
the
crownwheel
several
times
to
obtain
an

impression
of

the
tooth
contact

pattern
Check
the
backlash

between
the
teeth
of
the
crownwheel
and

pinion
using
a
dial

gauge
The
backlash
should
be
within
0
10
0
20mm
0
004

0
008
in

63

Check
the
run
out
at
the

ceac
of
the
crownwheel
if
the
back

lash
or

tooth
contact

pattern
is
incorrect
The
run
out
should

not
exceed
0
08mm
0
003
in
Measure
the

turning
torque

of

the
drive

pinion
which
should
be
within
7

IOkg
cm
6
9Ib
in

Shims
and

adjusting
washers
must
be

changed
if
the
tooth

contact

pattern
and
backlash
is
incorrect
the
necessary
details

for
these

operations
can

be
found
towacds
the
end
of
this

section
under
the

heading
TOOTH
CONTACT
PATTERN

To
dismantle
the
differential
remove

the

flange
clamp
bolt

and
extract

the
side

flange
as
shown
in

Fig
GA

using
the

special
stand
ST
33730000
and

sliding
hammec
ST
36230000

Remove
the

bearing

caps
with
a
suitable

puller
as
shown

in

Fig
G
5
Remove
the
left
hand

cap
first
followed

by
the

right
hand

cap
The

caps
should

be
marked

to
ensure
that

they

are

refitted
in
their

original
positions
Withdraw
the
differential

cage
from

the
carrier

Fig
G
6

Slacken
the
drive

pinion
and
hold
the

flange
with
a

suitable
wrench
as

shown
in
Fig
G
7
Withdraw

the
flange
with

a
standard

puller
Press
the
drive

pinion
out
of
the
differential

carrier

together
with
the
rear

bearing
inner
races
the

spacers

and
the
shims
Place
a

press
plate
between

the
drive

pinion
head

and
rear

bearing
and

press
out
the

pinion
shaft

The
inner
races

need
not
be
removed
if
the
tooth
contact

pattern
is
correct
and
the
crownwheel
drive

pinion
carrier

rear

bearing
and
shims
etc
are
to

be
re
used
The
front
and

rear
outer
races
of
the

pinion
bearings
can
be
removed
with
the

special
tool
ST
30610000
or
with
a

suitable
drift

To
dismantle
the
differential

cage
remove

the

right
hand

bearing
cone
as
shown
in

Fig
G
8
The

special
puller
ST
3306

0000
and

adaptor
ST
33052000
should
be
used
for

this

pur

pose

taking
care
not
to

damage
the

edge
of
the

bearing
innec

race
Flatten
the

lock

straps
slacken
the

crownwheel
bolts
in

a

diagonal
pattern
and
remove

the
crownwheeL

Remove
the
left
hand

bearing
cone
in
a
similar

manner
to

the

right
hand

bearing
cone
Make
sure
that
the

parts
do
not

become
mixed
and
can
be
assembled
in
their

original

positions

Punch
out
the
differential
shaft
lock

pin
from
the
crownwheel

side

using
a

suitable
drift
Great
care
must

be
taken
when

carrying
out
this

operation
as
the

pin
is
caulked
into
the
hole

in
the
differential

cage

Remove
the
shaft
the
differential

pinion

gears
and
the
side

gears
and
thrust
washers

Separate
the
left
and

right
hand

gears

and
washers
so
that

they
can
be
reassembled
in
their

original

positions

Replacing
oil

seals
with

the
differential
installed

The
oil
seals
can

be

replaced
if
necessary
with
the
differ

ential
fitted
to
the
vehicle

Front
oil

seal

Drain
the
oil
from
the
differential

unit
and
jack
up
the

vehicle
at
the
rear
Remove
the

propeller
shaft
from
the

differential

flange
Disconnect
the
handbrake
left
hand
rear

cable
Slacken
and
remove
the
drive

pinion
nuts
whilst

holding

the
drive
flange
with
a
suitable
wrench
or

special
tool
ST

31530000
Withdraw
the
drive

flange
with
a
conventional
two
l

arm

puller
as
shown
in

Fig
G
9
Use
the
oil
seal

puller
ST

33290000
to
withdraw
the
oil
seal
from
the
retainer

Replace

the
oil
seal

using
a
suitable
drift
or

special
tool
ST
33270000

Fill
the
oil
seal

lips
with

grease
when
installing
Fit
the
oil
seal

retainer
and
replace
the
various

parts
in
reverse

order
to

the

removal

procedure

Side
oil
seal

Detach
the
drive
shaft
from
the
side
flange
of
the
differ

ential
carrier
Extract
the
side

flange
with
the
slide
hammer

ST
36230000
and

adaptor
ST
33730000
as
shown
in

Fig
G
lO

Remove
and
replace
the
oil
seal
in
a
similar
manner
to

that

previously
described
for
the
front

oil
seal

taking
care
to

apply

grease
between
the
oil
seal

lips

DIFFERENTIAL

Inspection

Clean
the

parts
thoroughly
and

inspect
them
for

signs
of

wear
or

damage

Check
the
gear
teeth
for
scores
cracks
or

excessive
wear

Check
the
tooth
contact

pattern
of
the
crownwheel
and

pinion
for
correct

meshing
depth
The
crownwheel
and

pinion
are

supplied
as
a
set

and
should
either

part
be

damaged
it
will
be

necessary
to
renew
the

complete
set

2
Check
the

pinion
shaft
and

gear
mating
faces
for
scores
or

wear

Inspect
the
inner

faces
of
the
side

gears
and
their

seating
faces
on

the
differential

cage

3

Any
small
defects
on
the
faces
of
the
thrust
washers
can

be
corrected

using
emery
cloth
The
thrust
washers
must

be

replaced
however
if

the
backlash
between
the
side

gear

and

pinion
exceeds
0
2mm
0
008
in
and
the
clearance

between
the
side

gear
and
thrust
washer
exceeds
O
3mm

0
012
in
Three
sizes
of
washers
are
available
and
the

thicknesses
are
detailed
in
Technical
Data
at

the
end
of

this
section

4
Measure
the
run
out
of
the
crownwheel
at
the
rear
with
a

dial

gauge
Replace
the
crownwheel
and
drive
pinion
as
a

set
if

the
run
out
exceeds
the

permissible
value
of
O
08mm

0
003
in

5
Examine
the
differential
carrier

and

cage
for
cracks
or

distortion
Renew

any
part
found
to

be
defective

It
is

advisable
to
renew
all
oil
seals

DIFFERENTIAL

Assembly
and

Adjustment

Assembly
is
a
reversal
of
the
removal

procedure
noting

the
following
points

Arrange
the
shims
and
washers
etc
in
their
correct

order

and

thoroughly
clean
the
surfaces
to

which
the
shims
washers

bearings
and

bearing
retainecs
are
to
be
installed

Differential

cage

Fit
the
differential
side

gear
and
bevel

gear
in
the

cage

using
the
correct
thrust
washers
Insert
the

pinion
shaft
so
that

the
lock

pin
hole

corresponds
with
the
hole
in
the
differential

65

inter
M
j

@
jJ

2

t

1
5c

t
J
i
3

jp

7
i
r
4

Ilc
d

I

l

@

l
lb
r

s
ril

1

iF
C

Q
Fig
G
12
Section

through
the
drive

pinion

1
Pinion

height
adjusting
kUsher
4
Fte
Ioad

for
pinion
bearing

2
Pinion

height
ad
usting
shims
without
oil
mlI
and
drive
7
to

3

Tightening
torque
of
nut
dril
e
10

kgt1L
5a

6
to
72
3
lb

jl

pinion
17
to

20kg1n
22
9
to

ffnion
bearing
adjusting
w

uher

44

6Ib
ft
J
6
Pillion
bt
flrillgadjusti

lg
s
Jtu
er

fl

i
Ji
l
I
I

J

lJ

i

V
r
IHei
t

giluge

I
lST31210c
0

l

B
I

0
QJ

DUrnmYPinlOn

Drive

pinion
collar

lST3121QOCX
f
1
L

r

IST315000001

Dummvspacer

ST318500001
I
Fig
G
ll

Measuring
the
clearance
between
the

differential
side

gear
and
thrust
washer

Fig
G
t3
Drive

pinion
markings

Fig
G
14

Adjusting
the

pinion
height

1

Fig
G
t
5

Adjustment
diagram
for
the
dif

feren
tiaI
side
covers
Fig
G

16lnstalling
the
differential
side
covers

fig
G

Checking
the
backlash
of
crownwheel

and

pinion
Fig
G
tS

Fining
the

differential

mounting

member

bb

cage
Mcasure
the
clearance
between
the

rear
face
of
thc
side

gear
and
the
differential
cage
as

shown
in

Fig
G
ll

and
if

necessary
use
a

tluust
washer

which
will

given
a

clearance
of

0
1
0
2mm
0
004
0
008
in
Fit
the

pinion
shaft
lock

pin

and
secure
it

by
caulking
with
a

punch
Lubricate
the

gear
teeth

and
check
the

gear
for
freedom
of
rotation

Install
the
crown
wheel
in
the

differential

cage
and
insert

the
bolts
with
new
lock

straps
Tap
the
head
of
each
bolt

lightly

and

tighten
the
bolts
in
a

diagonal

pattern
to
a

torque
reading

of
7
0
8
0

kgm
51
58Ib
ft
Measure
the
width
of

the
side

bearings
before

installing
them
Place
a

weight
of
2
5

kg
5
5
1b

on
the

bearings
and
check
the
nominal
width
which
should
be

20mm
0
787
in
Press
the

side

bearings
into
the
differential

cage

Adjustment
of
drive

pinion

preload

This

adjustment
is
carried
out
without

fitting
the
oil
seal

Press
the
front
and
rear

bearing
outer
races

into
the

gear
carrier

and
fit

the

pinion
height
adjusting
washer

Fig
G
12
the

shims

and
the
rear

bearing
inner
race
onto

a

dummy
shaft

special
tool
ST
31
120000
The
old
washers
and

shims
can

be

re
used
if
the
tooth
contact

pattern
was
found
to
be

correct

on
the

pre
dismantling
check
Fit
the
drive

pinion
bearing
spacer

the
washer
ans

special
collar
5T
312140000
or
5T
31500000

and

the
drive

flange
on
to

the

dummy
shaft

Tighten
the
drive

pinion
nut
to
a

torque
reading
of
17

20

kgm
123
145
Ib

ft

Measure

the
drive

pinion
bearing
pre
load
and
select
washers
and

spacers
to

give
a

pre
load

of
7
1
0

kg
cm
6

9Ib
in
with
new

bearings
or
3

6
kg
cm
2

6
5
Ib
in
with
used

bearings

Adjusting

spacers
are
available
in

lengths
of
56
2
57
2
mm

2
2126
2

2520
in
and

adjusting
washers
in
thicknesses
of

59
2
31
mm
0
1020
0
0909
in

Adjustment
of

pinion
height

The

pinion
height
or
distance

of
the
face
of
the

pinion
to

the
axis
of
the

crownwheel
is

adjusted
by
the
thickness
of
the

adjusting
washer
behind
the
drive

pinion
gcar

The
drive

pinion
has
a

tolerance
mark
etched
on
its
face

this
tokrance
is

accompanied
by
a

or

sign
to
show
the

deviation
from
the
nominal
dimension
Thc

plus
sign
indicates

that

the
nominal
distance
must
be
increased
and

the
minus

sign
that
it
mllst
be
decreased
The
tolerances
are
shown
in

Fig

G
I3

The

pinion
height
can

be

adjusted
using
the

original

adjusting
washer
and
shims
between
the
rear

bearing
cone

and

the

drive

pinion
Install
the

setting
gauge
5T
31210000
on
the

carrier
with
the

dummy
pinion
installed
Sce

Fig
G
14

Measure
the
clearance
between
the
head
of
the

dummy

shaft

and
the
tip
of
the

setting
g
wge
using
a
feeler

gauge
as

shown
in

Fig
G
15
The
clearance
is

also
shown
at
the

point

T
in
Fig
G
14
The

required
thickness
of
the

adj
lsting

washer
can

be
obtained

using
the
following
formula

S
W

T
H
x

0
01
0
20

Where
W

thickness
of
inserted
shims
and
washers

T
Measured
thickness

H
Figure
engraved
on

pinion
head
o

S

Required
thickn
ss
of
washers
and
shims

A

typical
example
is
given
below

w

20
1
20

T

H

S
340
0
24
2
x
0
01

0
20
3
40
mm

0
24
mm

3
46
mm

An
adjusting
washer
rrlust
be
selected
which
is
nearest
in

thickness
to
the
value
of
3
46mm
Adjusting
washers
are
available

in
thicknesses
of
3
09mm
0
01217
in
to
3
66m
0
1441
in

for
the
l800cc
models
and
in
thicknesses
of
O

2
and
2
4mm

0
787
0
866
and
0
945
in

for
the
1400
and
1600
cc
models

Fit
the
selected

adjusting
washer
and
shims
to
the
drive

pinion
and

press
on
the
rear

bearing
inner

race
Install
the
drive

pinion
into
the
differential
carrier

together
with
the

bearing

spacer
and
washer

the
front

bearing
inner
race
and
the
front

bearing
pilot
spacer

Fit
the
drive
flange
and
washer
on
the
drive

pinion
and

secure
them
with
the

pinion
nut

Tighten
the
nut
to
a
torque

reading
of
17
20

kgm
123
145Ib
ft

SIDE
BEARING
SHIMS
Selecting

The
side

bearing
pre
load
must

be
adjusted
with
selected

shims

if
the

differential
carrier
the

cage
the
side
bearings
or

the
bearing
covers
have
been
renewed

The

required
thickness
of

the
shims
can
be
obtained

using

the

following
formula
and

referring
to

Fig
G
l
5

T1
left
side
bearing
A
C
GI
D
E
H
x
0
01

0
76

T2

right
side
bearing
B
D
G2
F
H
x
0
01
0
76

Where

A
B

C
D

E
F
The

figure
on
the
differential
carrier

The

figure
on
the
differential

cage

The
differences
in
width
of
the
left
or

right
hand

bearings
against
the
nominal
width
of
20
0mm

0
7874
in

given
in
units
of
1
100
mm

Gl

G2

H
The

figure
on

the
side
cover

The
figure
on
the
crownwheel

The
A
B
C
D
G
and
H

figures
indicate
the
dimensional

variations
in
units
of
1
100
mm
fr
Jm
the
standard
measurement

An

example
of
the
calculations
to
decide
the
thickness
of
shim

required
is

given
below

Where

A
I
B
2
C
2
D
1
GI
3
G2
1
E
O
Olmm
F

O
02mm
H

Left
side

bearing

Tl
A

C
G
1
D
H
x

0
01
0
76
E

I
3
1
2
x

0
01
0
76
0
01
0
8mm

Right
side

bearing

T2
B
D
G2
H
x
0
01
0
76
F

2

I
I
2

x
0
01
0
76
0
02
0
8mm

67

The

standard
width
of
the
side

bearings
is
20
0mm

0
7874

this
width
must
be

measured
before

attempting
to

calculate
the
thickness

of
the

adjusting
shims
Use
a

dial

gauge

and
surface

plate
to
ohtain

the
measurement
Place
a

weight
of

approximately
2

5

kg
5
5
lb
on
the

bearing
to

obtain

steady

readings

Install
the
differential

cage

assembly
in

the
carrier

Fit
the

sckcted

shims
and
O

rings
into
both

differential
side

bearing

covers

and
install
the
covers

in
the

carrier

using
the

special
tool

ST
33720000

Fig
G
16
l
Make
sure

that
the
side

bearing

outer

races
are
not

damaged

by
the

roller
Measure
the
backlash

between
the

teeth
of

the
crown
wheel

and
drive

pinion
with
a

dial

gauge
as
shown
in

Fig
G
I
Sct
the
dial

gauge
to
0
10

f
O

mm

0
004
0
008
in

I
If
the

backlash
is

less
than
the

specifIed

value
move
he
left
side

adjusting
shim
to
the

right
side
and
vice

versa

if
the
backlash

exceeds
the
specified
figure

Check

that
the
run
out
at
the
rear

of
the

crownwheel
does

not

excecd
O
OSmm
0
002

in
for

the
1800ce
model
or

O
08mm
0

003
in

for
the
1400
Check
the

drive

pinion

turning

torque
Thc

turning
torque
should
be

higher

by
I
3

kg

em

compared
with
the

turning
torque
obtained
before

fitting

the
differential

cage
in
the
carrier
The

higher
value
can

be

provided
if

necessary
by

dmnging
the

jde
cover

shims
Note

howcver

that
any
decrease
or
increase
in

the
thickncss
of
shims

wjJl

alter
tht
budlush

between
the
teeth
of
the
crownwhee1

and

pinion

Check

the
tooth
contact

pat
tern

of
the
crown
wheel
and

pinion
as

described
under
the

appropriate
heading

DIFFERENTIAL

Installation

Secure
the
differential

carrier
on
the
rear

suspension
mem

ber

using
the
four

bolts
and
washers
Fit
the
differential

mounting
member
to
thc

mounting
holes

by
pushing
it
forwards

with
a

suitable
lever

Fig
G
18

Tighten
the

nuts
to
a

torque

reading
of
8

5

kgm
61
5

Ib
ft

Tighten
the
bolts

attaching
the

gear
carrier
to
the

suspension
member
to
a

torque
reading
of

6
7

kg
36
5Ilb
ft
t

The

rcmainder
of
the
installation

operations
are
a
reversal

of

thc
removal

procedure
Fill
the
differential
with

the
correct

quantity
of
recommended
oil

DIFFERENTIAL
CARRIER

Removal
and

Dismantling

Estate
car
alld
Vanl

To

remove
the
differential

carrier
disconnect
and
remove

rhe

propeller
shaft
as

previously
described

and
remove

the
two

rear
axle

shafts
as

described
in

the
section
REAR
AXLL
With

draw

the
nuts

securing
the
differential

and
remove

the
carrier

from
the
rear
axle

Mount

the
unit
on
the

special
attachment
as
shown
in

Fig
G
19
and

carry
out
a

preliminary
check
before

dismantling

Oleck
the
tooth
contact
of
the

crownwheel

and

pinion
by

applying
lead
oxide

to
three
or
four

teeth
of
the

crownwheel

Turn
the
crown

wheel
several
times

to
obtain
an

impression
of

the

tooth
contact

pattern
Check
the
backlash

between
the
teeth

of
the
crownwheel
and

pinion
with
a

dial

gauge
Hold
the
drive

pinion
with
one

hand
and
move

the
crown
wheel

backwards
and
forwards
to

check

that
the
backlash
is
Io

ithin
thL

speL
ified
limits

Shims
and

adjusting
washers
must
bL
altered
if

the
tooth
con

tact

pattern
and
backlash

is

incorre
L
the
neL

cssary
details
for

these

operations
can
be
found
towards
the

end
of

this
section

under
the

appropriate
he
Jdjn

s
Fil1JJly
mark
the

bearing
caps

with
a
hammer

and

punch
to
ensure
correct

t1ignment
on
re

assembly

Remove
the

bearing

caps
nd
withdraw

the
differ

ntial

cage
make

a
note
of

the
left
and

right
hand

positions
so
h
Jt

the

bearing
caps
and
outer
race
can

be
re

assembled
in

their

original
positions

Withdraw

the
side

beJrings
with
the
s

cjal

puller
as

shown

in

Fig
G
20

taking
care
not
to

catch
the

edge
of
the

bearing

inner
races

Place
the

assembly
in
a
vice
and
detach

the
crownwheel

by
slackening
the

retaining
bolts
in
a

diagonal

patter
Fig
G
lf

Drive

out
th

pinion
shaft
lock

pin
from

left
to

right
using
a

suitable

punch
or

special
tool
ST
23520000

Fig
C
22

With

draw
the

pinion
shaft
and
take
out

the

pinions
side

gears
and

thrust
washers

Store
the

gears
and
thrust
washers
so
that

they

can

be
assembled
in
their

original

positions

Check
the
initial

turning
torque
of
the

drive

pinion
with

the

preload
gauge
ST
3190000

and
measure

the

height
of

the

drive

pinion
with
the

special
gauge
ST
31941000

Compare
the

figures
obtained
with
those

givcn
in

Technical
Data
at

the
end

of
this
section

Hold
the
drive

pinion
with

the

speciaJ
wrench
ST
3
J
530000

as
shown
in

Fig
C

23
and
unscrew
the

drivc

pinion
nut

then

pull
out
the
drive

pjnion
flange

Tap
the
drive

pinion
assembly
to
the
rear
with
a

plastic

mallet
and
withdraw
it

together
with

the
rear

bearing
inner
race

bearing
spacer
and
adjusting
washer

Remove

and
discard
the
oil
seal
and

withdraw
thc
front

bearing
inner
race
Drive
out
the
outer
races

of
the
front
and

rear

bearings
with
a
suitable

drift

Fig
G
25

The
drive

pinion
rear

bearing
inncr
race
can
be
removed

with
the

special
tool
ST
300310000
as

shown
in

Fig
G
24

DIFFE
l
ENTlAL

Inspection

Clean
all

components
thoroughly
and

examine
for

signs

of
wear
or

damage

Check
the
teeth
of
the

crownwhcel

and

pinion
for

scoring

and

hipping
Ii
should
be

noted
that
the
crownwhecl

and

pinion
are

supplied
as
a

matched
set
and
if
either

part
is

damaged

the

complete
set
must
be

replaced

Examine
the

inner
faces
of
the
side

gears
and
seats
on
the

differential
case

Inspect
the

bearing
races
and

rollers
and

replace

them
if

necessary

Small
defects

on
the
faces
of

the
thrust

washers
can
be

corrected

using
emery
cloth
however
if

the
clearance
between

side

gear
and

thrust
washer

exceeds
0
1
O
2mm
0
0039

0
0079

in
it
ill
be

necessary
to

replace
the
washer

Various

sizes
of
washers
are
available

and
the
thicknesses
arc
detailed

under
the

heading
DIFFERENTIA
L

GEAR
CAGE

Assembling

69

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
1
03
1
23
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
386
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
145Ib
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
sed

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