1973 DATSUN B110 roof

AUTOMATIC

TRANSMISSIO
N

i

MAJOR
REPAIR
OPERATION

SERVICE
NOTICE
FOR
DISASSEMBLY

AND
ASSEMBLY

TORQUE
CONVERTER

Inspection

TRANSMISSION

Disassembly

Inspection

Assembly

SERVICE
NOTICE
FOR

DISASSEMBLY
AND

ASSEMBLY

I
It
is

desirable
that
the

repair

operations
are
carried
out
in
the

dust

proof
room

2
Due
to
the
differences
of
the

engine
capacities
the

specifications
of

component
parts
for
each

model

s

transmission

may
be

different
How

ever

they
do
have
common

adJust

ments
and

repair
as
well

as

cleaning

and

inspection
procedures
ou

tlined

hereinafter

3

During
the

repair
operations

refer
to
the
Service
Data
and

Specifi

cations
section
for
the
correct

parts

for
the

applicable
model

transmission

4
Before

removing
any
of
subas

semblies

thoroughly
clean
the

outside

of
the
transmission
to

preven
t
dirt

from

entering
the
mechanical

parts

5
Do
not
use
a
waste

rag
Use

a

nylon
waste

or

paper
waste

6
After

disassembling
wash
all
dis

assembled

parts
clean
and
examine

them

to
see
if
there
are

any
worn

damaged
or
defective

parts
and
how

they
are
affected
Refer

to
Service

Data

for
the
extent
of

damage
that

justifies
replacement

7

Packings
seals
and
similar

parts

once
disassembled
should
be

replaced

with
new
ones
as
a
rule

TORQUE
CONVERTER
CONTENTS

AT
37

AT
37

AT
37

AT
37

AT
37

AT
39

AT
39
COMPONENT
PARTS

F
rant
clutch

Rear
clutch

Low
reverse
brake

Servo

piston

Governor

Oil

pump

Planetary
carrier

Control

valve

The

torque
converter
is
a
welded

construction
and
can
not
be
disas

sembled

Inspection

I
Check

torque
converter
for

any

sign
of

damage

bending
oil
leak
or

deformation
If

necessary
replace

2
Remove
rust

from

pilots
and

bosses

completely

If

torque
converter
oil
is

fouled
or

contaminated
due
to
burnt
clutch

flush
the

torque
converter
as
follows

I

Drain
oil
in

torque
converter

2
Pour
none
Iead

gasoline
or

kero

sene
into

torque
converter

approxi

mately
0
5

liter
I
1

8
V
S

p
7
8

Imper
p

3
Blow
air

into

torque
converter

and
flush
and
drain
out

gasoline

4

Fill

torque
converter
oil
into

torque
converter

approximately
0
5

liter
I
i
8
I

pt
7
8

lmper
pt

5

Again
blow
air
into

torque
con

verter
and
drain

torque
converter
oil

TRANSMISSION

Disassembly

I
Drain

oil
from
the
end

of
rear

extension
Mount
transmission
on

Transmission
Case
Stand
ST07860000

or
ST07870000
Remove

oil

pan
See

Figure
AT
52

AT

37

T
AT
41

AT
41

AT
42

AT
43

AT
43

AT

44

AT
44

AT
45

AT
45

2
Remove
bolts

securing
converter

housing
to
transmission

case
Remove

torque
converter

3
Remove

speedometer
pinion

sleeve
boll

Withdraw

pinion

4

Turn
off

by
hand
downshift
sole

noid
and
vacuum

diaphragm
Do
not

leave

diaphragm
rod
at

this

stage
of

disassembly
Rod
is

assembled
in

top

of

vacuum
diaphragm
See

Figure

AT
53

ST07860000

AT118

Fig
AT
52

Remouing
oil

pan

Show
2
liter
engine
model

Fig
A
T

53
Downshift
solenoid
and

uacuum
diaphragm

through
all
drive

positions
and

place

the
lever
in

park
P

position
In
this

inspection
the
car
must
be

placed
on
a

level
surface

The
amount
of
the
oil

varies
with

the

temperature
As
a
rule
the
oil

level

must
be

measured
after
its

tempera

ture
becomes

sufficiently
high

I
Fill
the
oil

to
the
line
H

The

difference
of

capacities
between
both

H

and
L

is

approximately
0
4

liter
7
8

U
S

pt
3
4

Imper

pt
and

therefore
take

care
not
to
fill

beyond

the

line
H

2
At
the
time
of
the

above

topping
up
and

changing
of
oil
care

should
be
taken
of
to

prevent
mixing

the
oil
with
dust
and

water

2

Inspecting
oil
condition

The
condition
of
oil

sticking
to
the

level

gauge
indicates
whether
to
over

haul
and

repair
the
transmission

or

look

for
the

defective

part

If
the

oil
has
deteriorated
into

a

varnish
like

quality
it

causes
the
con

trol
valve
to

stick
The
blackened
oil

gives
the

proof
of
the
burned
clutch

brake
band

etc
In

these
cases
the

transmission
must
be

replaced

Notes
a
In

oil
level

checking
use

special

paper
waste
to

handle

the
level

gauge
and
take

care

not
to
let
the

scraps
of

paper

and
cloth

tick
to
the

gauge

b
Insert

the

gauge
fully
and

take

it
out

quickly
before

splashing
oil
adheres
to
the

gauge
and
theu
observe
the

level

c

Use
automatic
transmission

fluid

having
DEXRON

iden

tIficatIon

only
in
the
3N71
B

automatic
transmission

d

Pay
atteutIon

because
the

oil
to

be
used
dIffers
from
that

i

used

in
the
Nissan
Full

Automatic

Transmission

3N7IA

Never
mix
the
oil
with

that
CHASSIS

Inspection
and

repair
of
oil

leakage

When
oil

leakage
takes

place
the

portion
near
the

leakage
is
covered

with
oil

presenting
difficulty
in
de

tecting
the

spot
Therefore
the

places

where
oil

seals
and

gaskets
are

equipped
are

enumerated
below

I
Converter

housing

The
rubber

ring
of

oil

pump
hous

ing

The
oil

eaI
of
oil

pump
housing

The
oil

seal
of

engine
crankshaft

The
bolts
of
converter

housing
to

case

2

Transmission
and
rear
extension

Junction
of
transmission
and
rear

extension

Oil
tube
connectors

Oil

pan

Oil

pressure
inspection
holes
Refer

to

Figure
AT

112

The

mounting
portion
of
vacuum

diaphragm
and

downshift
solenoid

Breather

and
oil

charging

pipe

Speedometer
pinion
sleeve

The
oil
seal

of
rear
extension

To

exactly
locate

the

place
of
oil

leakage
proceeds
as
follows

Place
the

vehicle
in
a

pit
and

by

sampling
the

leaked
oil
examine

whe

ther

it
is
the

torq
le
converter
oil
or

not

The

torque
converter
oil

assumes

color
like
red
wine

when

shipped

from
the

factory
so
it
is

ea

ily
distin

guished
from

engine
oil

or

gear
oil

Cleanly
wipe
off
the

leaking
oil
and

dust
and
detect

the

spot
of
oil

leakage

Use
nonflammable

organic
solvent

such
as
carbon

tetrachloride
for

wip

ing

Raise
the

oil

temperature
by

op

erating
the

engine
and

shift
the

lever

to
0
to

heighten
the

oil

pressure

The

spot
of
oil

leakage
will
then

be

found

more

easily

Note

A

the
oil

leakage
from
the

breather
does
not
take

place

except
when

running
at

high

speed
it
is

impossible
to
locate

the

spot
of

leakage
with
vehicle

stalled

AT
50
Checking
engine
idling

rprn

The

engine
idling
revolution
should

be

properly

adjusted

If
the

engine
revolution
is

too
low

the

engine
does
not

operate
smoothly

and
if

too

high
a

strong
shock
or

creep
develops
when

changing
over

from
N

to
D
or

R

Specified

idling
speed

650

rpm
at
D

position

800

rpm
at
N

position

Checking
and

adjusting
kick

down
switch
and

downshift

solenoid

When
the

kick
down

operation
is

not
made

properly
or

the

speed
chang

ing
point
is
too

high
check
the

kick

down
switch

downshift
solenoid
and

wiring
between
them

When
the

igni

tion

key
is

positioned
at
the

1st

stage

and
the

accelerator

pedal
is

depressed

deeply
the
switch
contact
should
be

closed
and
the

solenoid
should
click

If

it

does
not
click
it

indicates

a
defect

Then
check

each

part
with

the

testing

instruments

See

Figure
AT
I09

0
0

1
M

r

7

I

Y

ATl08

Fig
A
T
l

09

Downshift
solenoid

Note

Watch
for
oil

leakage
from

transmission
case

Judgement

Components

Rust

Fig
h

Discoloring
FRONT
AXLE
AND
FRONT
SUSPENSION

x

f
Unserviceable

May
be
used
when
minor

Rust

should
be
removed
with
0

emery

paper

Race

and
roller

00

u

o

o
Ou

u

The
wheel

bearing
is

serviceable
if
discolor

ing
can
be
removed

with
solvent
or

by

polishing

r
c

1
1

Ie

r
r

iJ
a
Inner
race

flaking

d

Cracked
roller

J

I

11

Ji

l
L
i

I

11

J

g
Recess
on
roller
o

0

0

CIl
Cause

Temperature
increase

during
operation
lowers
when
the

bearing

stops
moisture

inside
the

bearing
is

condensed

becoming
fine

drips
and
the

grease
is
moistened

The

bearing
has
been

placed
in
a

highly
moistened

place
for
a

long
period
of
time

Intrusion
of
moisture
chemicals
etc
or
the

bearing
is
touched

with
bare
hand
and
no

rustproof
action
has
been
taken

Slight
discoloring
may
look
like
oxidized

oil
stain

due
to

grease

In

the
most

cases
this
occurs
when

preliminary
pressure
is
too

high

b
Roller

flaking
c

Cracked

inner
race

I

lJ

f

t
j

e

Recess
on
inner
race

f
Recess
on
outer
race

cc

h
Rust

on
outer

race
FADD7

FA
9

@

7
11
@

C
C

B
B

@

I

L
IJ

A
A

F
F

n
18

@

1
@

H
H

@

@

Y

J

@
SEDAN

rN
Al

RQ
I

l

E

IN
A

D
D

I
I

4
DOOR
BODY

8
G

D1
J
Is
s

r
Jn
BJ

V

V
L

C
H
H

CJ

U

I

II

I

E
E

Q

@
DETAILS
OF
G

PORTION

1

Roof
11
Inner
roof
rail

2

Cowl
top
12
Rear
floor

3
Hood
13
Rear
fender

4
Lower
dash
board
14
Brace

5
Front
floor
15
Inner
reaT

pillar

6
Front
fender
16
Air
box

panel

7
Side
dash
board
17
Outer
sill

B
Inner
center

pillar
18
Inner
wheel
house

9
Inner
dOOf
19
Outer

wheel
house

10
Outer
door

Fig
nF
5
Cross
sectional
view

1

BF
3

J
J

CD

11
BODY

I
K

L
L
N
N

@
r

T
I

c

cb
I

cp

M
M

J

Ii
0
0

SEALING
ON

CIRCUMFERENCE

OF
REAR

FLOOR

@
Ii

DETAILS
OF
Q

PORTION
DETAILS
OF
R

PORTION

1
Rear
floor

2
Rear
fender

3

Luggage
compartment
floor

rear
side

4
Front

pillar

5
Front
fender

6
Ou
tee
door

7
Fue
filler

cover

8
Shock
absorber

mount
bracket
9

Seat
back

support

10
Inner
lock

pillar

11
Lock

pillar

12

Roof

13
Rear
waist

14

Luggage
compartment
lid

15
Rear

panel

16
Outer
wheel
house

Fig
BF
6
Cross
sectional
view
II

BF
4

COUPE
BODY

T

@

T

v
v

vv

l

2

DOOR
1

5

Vv
t

t
tJ

DETAILS
OF
8

PORTION

1

r
I

A

A

J

C

C

j

@

cr

U

D
D

@

DETAILS

OF
E

PORTION
1

Roof

2
Inner

side
body

3
Rear
fender

4
Outer
door

5

Front

pillar
6
Front

fender

7
loner
wheel

house

8
Rear

floor

9
I
Rner
lock

pilla
c

to
Lock

pillar

Fig
BF

7
Cross

sectional
view
III

SF

5

BODY

4
DOOR
VAN

A

i
d
n
S

Cr
Aj

c

oj
Lc

f

w
C
c

J

@

L
4

SEALING
ON

CIRCUMFERENCE

OF
REAR

FLOOR
w

@

0

0
0

Roof
6
Inner
side
body

Rear
fender
7
Ou

ter
back
door

3
Sealing
creen
8
Inner
back
door

4
Rear
noor
9
Tail
cross
membcr

5
S
ide
rear
floor
10
Rear

panel

Fig
BF
8
Cross
sectional
view
IV
Station

wagon
or

Van

8F
6

CD
I
R

J

@

J

0

I
If

5
1fJ

d

@
BODY

CDw
IDdow

moulding
ID
Roof
d

rip

m

OUlding
clip
@Roof
drip
moulding

Depress
dOWflW

hooking
th
ard

after

OP

oil

Windshield
upper
moulding
WlndS
lield
Ide
d

maul
1n9

ll
9F
O
fOU

Ll
@Body
sill

moulding

Nut

Used
n

nds
ont
nd

side
ch

@Door
outer

moulding

g
l
JF

I
Door
uter

moulding
clip

Clip
embled

the

moulding

@
@Radiator
grille
shroud

Radiator

grille
shroud

Used
at
f
A

dip

for
both
our

places
ept

nds

Door
uter

panel

Radiator
upper

grille

llRadiator
grille
side

shroud

i

i
mud
ubber

Fig
SF
12
t
Iouldin

g
installation

BF
8
WDoor
co
ver

rubber

p

Three
ach

ept
for
front
an
de

@Rear
fend
e
r

moulding

Four
ch
moulding
r

ed
for
one
c

IpS

d

ThiScli
p
aISO
functions

alng
nd