1973 DATSUN B110 engine

TRANSMISSION

I

Jack
up
the
vehicle
and

support
it
with
four
stands

If
available
recommend
a

hydraulic
hoist
or

open
pit
be

utilized

2

Disconnect
the
front
exhaust
tube

D
from
the

exhaust
manifold

Fig
TM
4
Underside

of
vehiJ
1e

3
Remove
the

propeller
shaft

@
by
removing
four

securing
bolts
from
the

companion
flange
of
the

gear

carrier
Seal
the
end
of
the
rear
extension

housing
to

prevent
oil

leakage

Fig
TM
5

Removing
propeller
haft
4
Disconnect
the

speedometer
drive
cable

ID
and

back

up
lamp
switch
cable
from
the
transmission
ex

tension
housing

s
Disconnect
the
shift
rods
from
the

shift
levers

by

removing
the
cotter

pin
and
remove
the
cross
shaft

assembly
@
from
the
transmission
case

r

J
f

f

1

I
Speedometer
cable

I
2

I
Cotter

pin

Fig
TM

6

Disconnecting
speedometer
cable

and
remote

controllinkag

6

hydraulic
clutch
control

Remove
the
clutch

operating
cylinder
from
the

clutch

housing

7
mechanical
clutch
control

Disconect
the
clutch
control
cable
from
the
withdrawal

lever

1

1
Withdrawal
lever
2

I
Clutch
control
cable

Fig
TM
7

Disconnecting
clutch
control
cable

8

Support
the

engine
with

ajack
placed
under
the
oil

pan
Do
not
loca

1
f
nder
the
oil

pan
drain

plug

I

i
l

TM
3

CHASSIS

To

prevent
the
oil

pan
from

damaging
insert

a
wooden

block

between
the

pan
and

jack

9

Remove
two
nuts

@
used
to
attach
the

transmission

to

the

rear

engine

mounting
member

Place

a

jack
under

the

transmission
and

remove
two
bolts

@
used
to

fix
the

rear

engine
mounting
member
to

the

body

It

I
Rear

engine
mou

ting

installation

bolts

I
Rear

engine
mounting

bolts

I
2

Fig
TM
8
C

oss

Fberremoval

10

Raise
the

jack
supporting
the

engine
to
incline
the

engine
in
a
rearward

direction
A

sufficient

space
will
be

provided
for
transmission

removal

I
Remove

the

starting
motor
a
d
the

bolts

attaching

the
clutch

housing
to
the

engine

12

Lower
the

jack
under
tlie

and
withdraw
thS
transmission

iJ

DISASSEMBI
Y
trans
fljssion
gradu3Ily

1

j

I
When

disassembling
the
transmission

the

following

procedure

sh
ould
pe
adopted
Since
the

casings
are
made

of
aluminum

alloy
be

careful
not
to

damage
any
of
the

castings
C

t

l
t1
Drain

gear
o

frqrP
the
transmission

I

2
Rc

ove
the

dust

cover
release
the

withdrawal
lever

n
turn

sprin
and
remove
the

withdrawal
lever
and
release

bC
lring
from
the
clutch

housing

h

IF
i

Iii

h

l
11
I
W

ithdrawallever

I
Return

spring

1

31
Release

bearing

Fig
TM
9

Removing
release

bearing
and

withdrawal

lever

3

Remove
three
bolts

securing
the

front
cover
and

remove
the

front
cover

II
I
Front
coveT

L
I
Bolt

Fig
TM
10
Remd

ving

fron
cover

4
Remove

the

spced
omcter

pinion
assembly

1f

SPEEDOMETER

PINION

ASSEMB
Y

w

Fig
TM

11

Removing
speedometer

pinion

TM

4

TR

ANSMISSION

Baulk

ring

I

Check
the
baulk

rings
for
wear

pitting
chips
or

burrs

If

any
abnormal
conditions
are
detected

they
must

be

replaced
with
new
ones

2

Place
the
baulk

ring
in

position
on
the
cone
of
each

gear
Push
the

ring
to
the

gear
and
check
the

gap
between

the
end
face
of
the
bauIk

ring
and
the
front
face
of

the

clutch
teeth
This

gap
should
be
within
1
05
to

I
4

mm

0

0413
to
0
0551
in

If
it
is
less
than
0
5
mm
0

0197

in
a

worn
bauIk

ring
may
be
the

cause
and

a
new

ring

should
be
fitted

ii
V

ilillltII

l
A

1
05
to
1
4

mm

0
0413
to
0
0551
in

Fig
TM
28

ulk

ring
to

cone

installing
dimension

ShiftiAg
insert

Replace
if
worn

excessively
worn

unevenly
de

formed
or

damaged

Oil
seal
i

T

l
l

11

tT

Replace
the
oil
seal
with
a
new
one
if

lip
is
deformed

f

worn
or
cracked
or
when
the

spring
is

dropped
off

When
it
is

necessary
to

replace
the
transmission
rear

oil

seal
use
the

following

procedurecto
prevent
d

age
to
the

extension

l

1
Insert
the
transmission

rear
oil

seal
remover

ST23850000
into
the
dust
cover

2
Attach

a
pipe
wrench
to
the
dust

cover
and
drive
out

the
dust

cover

together
with
the

oil
seal

by

rotating
the

wrench
four
or
five
turns

I
Oil
seal

Extension
IJ

y

Fig
TM
29

Removing
rear
oil
seal

r

VI
1

3

Apply
a

coating
of

sealing
material

to
the

periphery

of
the
dust
cover
when

pressing
a
new
oil

seal
into

position
Never

apply
an
adhesive

caulking
material

Rear

engine
mounting
insulator

Replace
rear

engine
mounting
insulator

if

weakened

a

deteriorated
or

cracked

7i
1

rt

REASSEMBLY
AND
AD
JUSTMENT

Selecting
counter

bearing
thrust

washer

l
Fit
the
counter

bearings
to
the

counter
shaft
both

front
and

rear

by
the

use
of

a
counter
shaft

bearing
press

stand

special
tool

ST23030000
and

by
means
of

pressing

r

j

Itf

Fig
TM

JO

Fitting
counter

shaft

bearing
r

JJff
i

it

l
t

i

j

IlK

Ji
t

l
k

TM
9

CHASSIS

SERVICE
DATA
AND

SPECIFICATIONS

GENERAL
SPECIFICATIONS

Type

No
of

speeds

Synchromesh
type

Gear
ratio

1st

2nd

3rd

4th

Rev

Speedometer

gear
ratio

Sedan
and

Coupe

Van

Oil

capacity

TIGHTENING
TORQUE

Transmission

proper

Engine
transmission
intallation
bolt

Engine
mount
rear
installation
bolt
to
the

body

Speedometer
pinion
installation
bolt

Front

cover
installation

bolt

TM
20
R3W56
F4W56

3
forward
I

reverse
4

forward
I

reverse

Warner

type
Warner

type

3
380

3
757

1734
2
169

1
000
1404

1

000

3
640
3

640

17
5
17
5

18
5

18
5

1
2
L
2
1
2
U

S

pt

2
1
8

Imp
pt
1
2

L
2
1
2
U
S

pt

21
8

Imp
pt

kg
m
ft
Ib

1
6
to
2
2

11
6

to
15

9

3
2

to
4
0
23
1

to
28
9

0
5
to
1
1
3
6
to
8

0

1
0
to
1
6
7
2
to
11
6

CHASSIS

Front

cover

Part
number
Thickness

mm

Un

Adjusting
shim

32208
18000

32208
18001

32208
18002
0
5
0
0197

0
2
0
0079

0
1
0
0039

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Symptom
and

possible
cause
Corrective
action

Difficult
to
intermesh

gears

Causes
for
difficult

gear
shifting
are
classified
to

troubles

concerning
the
control

system
and
transmission

When
the

gear
shift
lever

is

heavy
and
it
is

difficult
to
shift

gears
clutch

disengagement
may
also
be

unsmooth
First

make

sure
that
the
clutch

operates
correctly
and

inspect
the
transmission

Worn

gears
shaft
and
or

bearing
Replace

Insufficient

operating

strokfdue
to
wom
or
loose

sliding
part
Repair
or

replace

Defective

or
damaged
synchronizer
Replace

Gear

slips
out
of
mesh

In
the
most

cases
this
trouble
occurs
when
the

interlock

plunger
check
ball
and

or

spring
is
wuro
or

weakened
or

when
the
control

system
is
defective
In
this

case
the
trouble

cannot
be
corrected

by
replacing
gears
and
therefure

trouble

shooting
must
be
carried
out

carefully
It

should
also
be

noted
that

gear
slips
out
of
mesh
due

to
vibration

generated
by
weakened
front
and
rear

engine
mounts

Worn

interlock

plunger

1
Replace

Worn
check

ball
and
or
weakened

or
broken

spring
Replace

Worn
fork
rod
ball

groove
Replace

Worn
or

damaged
bearing
Replace

Worn
or

damaged
gear
Replace

Noise

When
noise

occurs
under

engine
idling
and

stops
while
the

clutch
is

disengaged
or
when
noise
occurs
while

shifting

gears
it

may
judged
that
the
noise
is

from
the
transmissiun

TM
22