1973 DATSUN B110 manual transmission

Judgement
in

measurmg

line

pressure

I
Low

idling
line

pressures
in
the

ranges
D
2
loR

and
P

It
can

be
artributed
to
trouble
in

the

pressure
supply
system
or
too
low

output
of

power
caused

by

1
A

worn
oil

pump

2

An
oil

pressure
leakage
in
the
oil

pump
valve

body
or

case

3
A

sticking
regulator
valve

2
Low

idling
line

pressures
in

cer

tain

ranges
only

It

is
caused

pressumabIy
by
an
oil

leakage
in

the
devices
or
circuits
con

nected
to
the

relevant

ranges

1
When
there
is
an
oil

leakage
in

the

rear
clutch
and

governor
the
line

pressures
in
D

2
and
I
are

low

but
the

pressure
is

normal
in

R

2

When

an
oil

leakage
occurs
in

the

low

and
reverse
brake
circuit

the

line

pressures
in

R
and
p

are
low

but
the

pressure
is

normal
in
0

2

and
I

3

High
idling
line

pressures

It

is

presumed
to
be

caused

by
an

increased
vacuum
throttle

pressure

owing
to
a

leakage
in
the

vacuum
tube

or

diaphragm
or

by
an
increased
line

pressure
due
to
a

sticking
regulator
CHASSIS

valve

Vacuum

leakage
is

checked

by
di

reetly
measuring
the

negative

pressure

after

removing
the
vacuum

pipe

A

puncture
of
the

vacuum
dia

phragm
can
be

easily
ascertained

because
the

torque
converter

oil
is

absorbed
into
the

engine
and
the

exhaust

pipe
blows

up
the
white

smoke

4

Checking
items

when
the
line

pressure
is

increasing

In
trJs

checking
the
line

pressure

should
be
measured
with

vacuums
of

450
mmHg
and
0

mmHg
in
accordance

with
the
stall
test

procedure

test

procedure

1
If
the
line

pressures
do

not

increase

despite
the
vacuum
decrease

check
whether
the
vacuum
rod
is

incorporated

2
If

the
line

pressures
do
not
meet

the
standard
it
is
caused

mostly
by
a

sticking
pressure
regulating
valve

pres

sure

regulating
valve

plug
or

amptifier

TROUBLE
SHOOTING

CHART

Inspecting
items

1

Inspection
with

automatic

trans

mission
on

vehicle

J

AT
54
A
Oil

level

B

Range
selecr

linkage

C
Inhibitor
switch
and

wiring

D

Vacuum

diaphragm
and

piping

E

Downshift
solenoid
kick
down

switch
and

wiring

F

Engine
idling
rpm

G

Oil

pressure
throttle

H

Engine
stall

rpm

I
Rear
lubrication

J

Control
valve

manual

K

Governor
valve

L
Band

servo

M
Transmission
air
check

N
Oil

quantity

o

Ignition
switch
and
starter

motor

P

Engine
adjustment
and
brake
in

spection

2

Inspection
after

inspecting
auto

matic
transmission

on
vehicle

m

Rear
clutch

n
Front
clutch

q
Band

brake

r

Low
and
reverse
brake

s

Oil

pump

Leakage
of
oil

passage

u

One

way
clutch
of

torque
converter

v

One

way
clutch
of
transmission

w

Front
clutch
check
ball

x

Parking
linkage

y
Planetary
gear

CHASSIS

Engine
idling
and
stall
revolution

Engine
with

emission
control
device

Idling
revolution

rpm
650
at
0

position

800
at
N

position

1
750
to
2

000

Stall
revolution

rpm

Tightening

torque
kg
m
ft
Ib

Test

plug
oil

pressure
inspection
hole

Support
actuator

parking
rod

inserting
position
to
rear
extension

Oil

charging
pipe
to
case

Dust
cover
to

converter

housing

Selector

range
lever
to

manual
shaft

Lower
shift
rod

lock
nut
6
5
t07
5

47
to

54

0
8

to
1
0
5
8
to
7
2

4
0
to
5
0
30
to

36

4
0
to
5
0

30
to

36

2
0
to
2
5
15

to
18

0
5

to
0
7
3
6

to
5
1

0
5

to
0
7
3
6toS
I

1
2

to
1
5
8
7

to
10
8

1
5
to
4

0
II
to

29

1
3

to
1

8
9
4
to

13

0
55
to
0
75
4
0
to
5
4

0

25
to

0
35
1

9
to
2
5

0
25
to

0
35
1
9
to
2
5

0
5
to
0
7
3

6
to
5
I

0
25

to
0
35
1
9
to

2
5

0
5
to
0
7
3

6
to
5
1

0

6
to
0
8
4
4
to
5
8

0
5
to
0

7
3

6
to
5
1

3
0
to
4

0
22
to

29

3
0

to
5
0

22
to

36

14
to
2
1

10
to
15

0

8
to
l
l
5
8
to

7
9

0
55
to
0
75
4
0

to
5
4

0
55

to
0
75
4
0
to
5
4

3
0
to
4
0
22
to

29

2
0
to
2

9

15
to

21
Drive

plate
to
crankshaft

Drive

plate
to

torque
converter

Converter

housing
to

engine

Transmission
case
to
converter

housing

Transmission

case
to

rear
extension

Oil

pan
to

transmission
case

Servo

piston
retainer
to
transmission
case

Piston
stem

when

adjuting
band
brake

Piston
stem

lock
nut

One

way
clutch
inner

race
to
transmission
case

Control
valve

body
to
transmission

case

Lower

valve

body
to

upper
valve

body

Side

plate
to
control
valve

body

Nut
for
control

valve
reamer
bolt

Oil

strainer
to
lower
valve

body

Governor
valve

body
to
oil
distributor

Oil

pump
housing
to

oil

pump
cover

Inhibitor
switch
to
transmh
sion
case

Manual
shaft
lock
nut

Oil

tube
to

transmission
case

Turn
back
two
turns
after

tightening

AT
62

Tool
number

Tool
name

ST20105000

Diaphragm
adjust

wrench
SERVICE
EQUIPMENT

Figure

mm
inch

Manual
transmission
tool

ST22350000

Main
shaft

bearing

drift

ST23030000

Counter
shaft

bearing

press

stand

ST23050000

Counter

gear

height

gauge

SE
5
Description

For

measuring
the

diaphragm

spring
height

For

assembly
of
the
main

shaft

bearings

For

assembly
of
the
counter

shaft

bearings

For

measuring
the
counter

bearing
height
from
the
trans

mission

case
rear
end
S
M

reference

page
See

Fig
No

Fig
CL
7

Fig
TM
36

Fig
TM
39

Fig
TM
30

Fig
TM
31

GENERAL
INFORMATION

MODEL
VARIATION

Model

Engine
model
Transmission

type
Brake

type

model
Front
Rear

LBllOTRU
Manual
transmission

Disc
Drum

F4W56L

2
door

Sedan

LBllOARU
Automatic
transmission

Disc
Drum

3N71B

AI2

KLBllOU
Manual
transmission

Disc
Drum

F4W56L

Coupe

Automatic
transmission

KLBllOAU

3N71B
Disc
Drum

Model
Identification

KLBIIOATRU

I

U

for
U
S
A

and
Canada

R

2
door

T
Floor
shift
vehicle

A
Automatic
transmission

L

Left
hand
drive

K

Coupe
SuffIx

PrefIx

IDENTIFICATION
NUMBER

The

identification
number
is

stamped
on
the
instru

ment

panel
and

can
be
seen
from
outside
See

Figure

GI
I

The
model
number

plate
identifles
the

type
of
car

engine

capacity
maximum

horse

power
SA
E
wheel

base

engine
number
and
car
number

The
model
number

plate
is

attached
to
the

right
side

cowl

top
panel
See

Figure
GI

2

The
car

serial
number
is

stamped
on
the

left
side

cowl

top

panel
See

Figure
GI
3

The
car
serial
number
consists

of
the
vehicle

model
and

serial
number

LBllO
xxxxxx
I

ll

r
N

t
0

S

k
j
c

ftr
o
l
l

r

2
0

IDENTIFICATION
NUMBER

l

r
f
N
s
r

F

i

u

I

Fig
GI
J

Identification
number
location

GI

l

GENERAL
INFORMATION

spring
etc

support
the
rear
cruss
member
with

stands
In

other
cases

support
both
ends

of
the
rear

axle

housing

with
stands

Fig
CI
9
Rear

jacking
point

Fig
C
J
0
Rear

supportable
point

TOWING

Manual

transmission
model

When
the

car
is
towed

forward
connect

the

rope

securely
to
the
notched

portion
of
the
tension

rod

bracket
In

no
event
should
a

rope
be

applied
to
the

transverse
link

To

two
another
car

connect
a

rope
to
the
rear

shackle
of
rear

spring

Note
Avoid

applying
load

suddenly
to
a

rope
as
it

may

cause
damage
Fig
GI
l1
Front

towing
point

Fig
GI
12
Rear

towing
point

Automatic
transmission
model

The
car

may
be
towed

safely
on
its
rear
wheels
on
the

ground
with
the

select
lever

in
N
Neutral

position
of

at

speeds
of
less
than
30
km
h

18
7
MPH
However
the

propeller
shaft
must
be

disconnected

or
the
car
must
be

towed

on
its
front

wheels
on
the

ground
under
the

following
conditions

Tow

speed
of
more
than
30
kro
h
18
7
MPH

2

Car
must
be
towed
for
a

long
distance

over
10
km
or

6
miles

3
Transmission
is
not

operating
properly

If
car
is
towed
on
its

front
wheels
on
the

ground
the

GI
4

GENERAL
INFORMATION

steering
wheel

should
be
secured
to
maintain
a

straight

ahead

position

TIE
DOWN

The

front
tie
down
hook
is

used
the

both
front
end
of
tension
rod
Do
not

apply
the
hook
at
the
center
of

tension
rod
or

suspension
member

The
rear
tie
down
hook
is
used
the

both
front
shackle

of

rear

spring

APPROXIMATE
REFILL
CAPACITY

Liter
U
S
A

measure

I
Imp
measure

Sedan

Fuel
tank

Coupe

with
heater

Cooling
system

without
heater
40
L

38

L

4
9

L

4
2
L

2
7
L

0
54

L

1
2
L

5
5
L

0
75
L

0
24

L
Oil

pan

Oilf1lter

Transmission

case
Manual

Automatic

Differential

case

Steering
gear
box

RECOMMENDED

GASOLINE
FUEL

Use
a
no
lead

or
low
lead

gasoline
with
a
minimum

octane

rating
of
87
the

average
of
the
Research
and
1O

gal
8Y

gal

10

gal
8

gal

5

v

qt
4

M
qt

4
Y
6

qt
3

Y

qt

2Ji

qt
2

qt

1

pt
I

pt

2

pt
2

pt

5Ji

qt
4

qt

1

pt
1

pt

pt
pi

Motor
Octane
Numbers
in
the
U
S

When
the

figure
is

based
on
the
Research

Octane
Number
use
a

gasoline

with

a
minimum
octane

rating
of

91
RON
in

Canada

RECOMMENDED
LUBRICANTS

GI
5
r

ENGINE

Replacing
fuel
filter

Check
for
a

contamination
element
water
deposit
and

defection

Fig
ET
15
Fuel
strcrineT

All

engines
use
a

cartridge
type
strainer
If
it
is
found

to
be

defective

replace
as
an

assembly

Checking
fuel
lines

hoses

pipings
connections
etc

Check
fuel
lines
for
loose
connections
cracks
and

deterioration

Retighten
loose
connections
if

necessary

replace
any

damaged
or

defective

parts

THROTTLE
OPENER
CONTROL

SYSTEM

The
function
of
the
throttle

opener
is

to

open
the

throttle
valve
of
carburetor

slightly
in

vehicle
decelera

tion

During
deceleration
manifold
vacuum
rises

and
a

quantity
of
mixture
in
the

enigne
is

not
sufficient
so
that

a
normal
combustion
can
not
continue
and
a

great

amount
of
unburned
HC
is

emitted
The
carburetor

equipped
with
the
throttle

opener
supplies
the

engine

with
an

adequate
charge
of
combustible
mixture
to

keep
proper
combustion

during
deceleration

resulting
in
re

markable
reduction
of

He
emission

The

operation
of
the

throttle

opener
is
as
follows
A

schematic

drawing
of
the

system
is
shown
in

Figure

ET
16

At
the

moment
when
the
manifold

vacuum
increases

as

occurs

upon
deceleration
the

control
valve

opens
to

transfer
the
manifold

vacuum
to

the
servo

diaphragm

chamber
and
the
throttle
valve
of
the
carburetor

opens

slightly
As
the
vehicle

speed
decreases

above
16

km
h

10

MPH
for
manual
transmission

only
the
manifold

vacuum
lowers
to
the

predetermined
value
The
vacuum

control
valve

begins
to
close

gradually
keeping
the

manifold

vacuum
at
the

predetermined
constant
value

As
a

result
both
low
HC
emission
and
normal

engine

brake

during
deceleration
are

obtained

The

altitude
corrector
is

provided
with
a

slight
preload

to

compensate
the

variation
of
the

atmospheric
pressure

Vacuum

control
solenoid

The

purpose
of
this
control
is
to
return
the

speed
of

engine
to
the

prescribed
idling
positively
To
be

accurate
the

control

prevents
the
throttle

opener
from

taking
normal

operation
when
vehicle

speed
is
below

16

km
h

IO
MPH
for
manual
transmission

equipped

model
or
when
transmission
is

placed
in

N
or

P

position
for
automatic
transmission

equipped
model

Current
flows

through
the

solenoid
when
vehicle

speed

falls
below
16
km
h
10

MPH
on

manual
transmission

equipped
model
or
when
the
transmission
is

placed
in

N
or

P

position
on
automatic
transmission

equipped
model

As
this
takes

place
the
needle
valve
is
lifted
off
its
seat

directing
air
from
the
air
chamber
to
the
servo

diaphragm
This
releases
the

operation
of
the
throttle

opener

When

vehicle

speed
goes
over
16
km
h

IO
MPH
or

when
transmission

is

placed
in
a

position
other
than

N

or
P

position
the
solenoid
is

deenergized

allowing
the
throttle

opener
to
take
normal
action

to

reduce
He
emission
to
a
minimum

ET
10

EMISSION

CONTROL
AND
TUNE
UP

Ignition
switch

0

Speed
switch

Ignition
switch

6

Transmission
A12

Engine
with
Manual
Transmission

l

Battery

J

Below
10

mph

switch

ON
To
throttle

opener

Servo

diaphragm

Needle
valve

To
air
cleaner
To

intake

manifold

f

Vacuum
control

valve

p

Throttle

opener

noid

ON
Car

speed
below
16
km
h
10
MPH

OFF

Car

speed
above
16
km
h
10
MPH

A12

Engine
with
Automatic
Transmission

Inhibitor
switch
1

J
Battery

To
intake

manifold

t

ET
11
OFF
ON

Fig
BY
16

Schematic

drawing
of
throttle

opener
system
To
throttle

opener

Servo

diaphragm
Vacuum
control

valve

P

Throttle

t
opener

solenoid

7
7

ON
transmission
in
N
and
P

positions

OFF
Transmission
in
0

position