1973 DATSUN B110 transmission oil

AUTOMATIC
TRANSMISSION

2

range
2nd

gear

To

queCo
Low
a

R

8

ka

8
ke

Oownltlift

Solenoid

14

12

@
VK

Throt

V

I
7
Throttl

Sack

up

V
lv
@SOl

o
if
V
I

Front

Lubrk
n

Orltlc

Ch
k

V

l
Dr
n
V

1

ThroW

Drain

V
Ye
Pt

Mod
fier
V
I

IS

8Rt

@2
3rdTimi
Sl

It

V

12

3
ht
2nd

Sf
ll

5

Secor
d
Lock
V
I

3
I

@
M
nu
l

V

I

5
I1Jl
ill
Pr
ur

R
vulatO
V
I

Note
M

keel
r
D

in

a

P

imary

Go
no
V
h
Line

pr

IGo
no

teed
p
luure

Go

no
p

E2I
B
Ii
iiiIJ
To

c
U
con

t
p

Th
oUl

prn
SecOnda

y

00
0

V
lv

Fig
AT
42
Oil

pressure
circuit

diagram
2

range
2nd

gear

AT
29

CHASSIS

1

range
Low

gear

When

starting
in
I

range
the

driving
gear
is
locked
to
the
low

gear

ratIO

In
1

range
the

reaT
dutch

is

applied
and
the
low
and
reverse
brake

holds
the

connecting
drum
and

rear

planet
carrier
from

rotating
The

power
flow
takes

place
through
the

input
shaft
and
into
the
rear
dutch

Rotation

of
the
rear
clutch
drives
the

rear
clutch
hub

and
front
internal

gear

The
front
internal

gear
rotates
the

front

planetary
gears
clockwise
to

cause

the
sun

gear
to
rotate
counter

clockwise

Counterclockwise
rotation
of
the

sun

gear
turns
the
rear

planetary
gear

clockwise

The
rear

planet
carrier

splined
to

the

connecting
drum
is
held
from

rotating
by
the
low
and

reverse
brake

The
clockwise
rotation
of
the
rear

planetary
gears
therefore
rotates
the

rear
internal

gear
and

internal
drive

tlange
The

internal
drive

tlange
is

splined
to
the

output
shaft
and
rotates

the

output
shaft
clockwise
However

the

output
shaft
rotates
at
a

lower

speed
compared
with
that
of
the

input

shaft
This
is

caused

by
the
fact
that

the
front

planet
carrier
rotates
at
the

same

speed
as

the

output
shaft
in
the

same
direction
since
the
carrier
is

splined
to

the

output
shaft
The

front

internal

gear
and

planetary

gear
as

sembly
are

rotating
in
the

same
direc

tion
but
the

planet
carrier
is

rotating

at

a

speed
slower
than
the

ring
gear
So

the

gear
ratio

of
this

speed
range
is
a

combination
of
the
ratios

provided
by

the
front
and

rear

planetary
gear
a

semblies

When

the
manual
valve

CV
is

posi

tioned
at
I
the
line

pressure
7
is

applied
into
the

line

pressure
circuits

I
4
and
5
The

oil

pressure
in
5

actuates
the

low
and

reverse
brake

after

being
introduced
into

the
circuit

12

through
the

lst
2nd
shift
valve

@
and

the
line

pressure
I

acts
on
i

C

AT076

Fig
A
T

43
Power
transmission

during
11

range

A

Ton

Fig
A

T
44

Operation
of
each
mechanism

during
11
range

Clutch
Low

Band
rvo
On

Parking

Range
Gm

ratio
reverse
w

pawl

Front

Rear

brake
Operation
Release

clutch

Park
on
on

Reverse
2
182
on
on
on

Neutral

DI
low
2
458
on
on

Drive
D2
Second
1
458
on
on

D

Top
1
000
on
on
on
on

2
Second
1
458
on
on

12
Second
1
458
on
on

I

Low
2
458
on
on

the

rear
clutch
and

governor
The
line

pressure
4
acts
in

the
same
manner
as

in
2

range

Similar
10
that
of
the
D

range

the
line

pressure
increases
with
the

degree
of

depressiun
of
the
accelerator

pedal
and
the
line

pressure
decreases

with
the
increase
of

car

speed
The
governor
pressure
IS
which
acts
on

the
Ist
2nd

shift
valve
does

not

increase
until

it
overcomes
the
com

bined

force
of
the

line

pressure
12

and
the

spring

causing
nu
I

st
2nd

speed

change

AT
3D

AUTOMATIC
TRANSMISSION

1

range
Low

gear

Lo
Rev

B
k

Brat

Oownthift

SolenoOCl

14

T
COUP

A
uu
e

IV
hl

I

R
L
ub
c
tlon

Dr
n

It

Val
9
10
v

nHOI

V

l
in

jl

8
Sale
d

QI

Cow
ilt
V

D
nV
Front

Lubtlc
t
Oritice

ChotCk

Valv
I

I

14
Throttle

Dr

V
lv8
I

Pre

Modil
lv8

15

3
151
2nd

j
Pre
u

Re1julato
Valva

@

n

No
Marked
er
0
8in

Primary

Gove
nor
V

I
Line

p
Go
erno
feed

p
euu

GOvernor

preuu

lEII
IIIII
To

que
con
8

t8
pres
He

Th
ottl

p
Second

Go
l
Io
vel
8

Fig
A
T
45
Oil

pressure
circuit

diagram
11

range
Low

gear

AT
31

AUTOMATIC
TRANSMISSION

REMOVAL
AND
INSTAllATION

TRANSMISSION
ASSEMBLY

Removal

Installation

TRANSMISSION

ASSEMBLY

When

dismounting
the
automatic

transmission
from
a

vehicle

pay
at

tention
to
the

following

points

1

Before

dismounting
the

trans

mission

rigidly

inspect
it

by
aid

of
the

Troubleshooting
Chart
and
dis

mount
it

only
when

considered
to
be

necessary

2
Dismount

the
transmission

with

utmost
care
and

when

mounting

observe

the

tightening

torque
indi

cated
on
another
table
not

to
exert

excessive
force

Removal

In

dismounting
automatic
transmis

sion
from

vehicle

proceed
as
follows

i

Disconnect

battery
ground
cable

from
terminal

2
Jack

up
car
and

support
its

weight
on

safety
stands

Recommend
a

hydraulic
hoist
or

open
pit
be

utilized

if
available

Make

sure
that

safety
is
insured

3
Remove

propeller
shaft

Note

Plug
up
the

opening
in
the
rear

extension
to

prevent
oil

from

flowing
out

4

Disconnect
front

exhaust
tube

5

Disconnect

selector

range
lever

from
manual
shaft

6

Disconnect
wire
connections

at

inhibitor
switch
CONTENTS

AT

33

AT

33

AT

33
TRANSMISSION

CONTROL
LINKAGE

Removal
and
installation

Adjustment
AT

35

AT

36

AT

36

7

Disconnect
vacuum
tube
from

vacuum

diaphragm
and

wire
connec

tions
at

downshift
solenoid

8

Disconnect

speedometer
cable

from
rear

extension

9
Disconnect
oil

charging

pipe

10

Support
engine
by
locating
a

jack
under

oil

pan
with
a
wooden

block
used

between
oil

pan
and

jack

Support
transmission

by
means
of
3

transmission

jack

11
Detach

converter

housing
dust

cover
Remove

bolts

securing
torque

converter
to

drive

plate
See

Figure

AT
47

AT265

Fig
AT
47
Removing
torque
converter

attaching
bolt

Note
Before

removing
torque
con

verter
scribe
match
marks
on

two

parts
so
that

they
may
be

replaced
in
their

original
posi

tions
at
assembly

12
Disconnect

engine
moun
t

and

hand
lever
bracket

by

removing
two
2

rear

engine
mount

securing
bolts
and

two

2
crossmember

mounting
bolts

13
Remove

starter
motor

14
Remove
bolts

securing
transmis

sion
to

engine
After

removing
these

AT
33
bolts

support
engine
and
transmission

with

jack
and
lower
the

jack
gradually

until

transmission
can

be
removed
and

take

out
transmission

under
the

car

Note

Plug

up
the

opening
such
as
oil

charging

pipe
rear
extension

etc

Installation

Installation
of
automatic
transmis

sion
on

vehicle
is

reverse
order
of

removal

However

observe
the
follow

ing
installation
notes

Drive

plate
mnout

Turn

crankshaft
one
full

turn
and

measure
drive

plate
mnou
t
with

indi

cating

finger
of
a
dial

gauge
rested

against
plate
See

Figure
AT48

Replace
drive

plate
if

in

excess
of

0
5
mm

0
020
in

Maximum
allowable
mnout

0
3

mm
0
012
in

A

T266

Fig
A
T
48

Measuring
drive

plate

runout

2
Installation
of

torque
converter

Line

up
notch
in

torque
converter

with
that
in
oil

pump
Be

extremely

careful
not
to

cause
undue
stresses
in

parts
in

installing
torque
converter

See

Figure
A

T
49

Fig
A
T
49

Torque
converter

aligning
cut

3
When

connecting
torque
con

verter

to
transmission

measure
dis

tance
A

to
be

certain
that

they
are

correctly
assembled
See

Figure

AT
50

Distance
A

More
than
16
5
IllIll

0
650
in

A

AT117

Fig
A
T
50

Installing
torque
converter
CHASSIS

4
Bolt
converter
to
drive

plate

Tightening
torque

0
8

to
1
0

kg
Ill
5
8
to
7
2
ft
Ib

Note

Align
chalk

marks

painted
a

cross

both

parts
during
disas

sembling
processes

5

After
converter
is
installed

rotate

crankshaft

several
turns
and
check
to

be
sure
that

transmission
rotates

freely

without

binding

6
Pour

recommended
automatic

transmission
fluid

up
to

correct
level

through
oil

charge

pipe

7

Connect
manual

lever
to

shift

rod

Operation
should
be
carried

out

with
manual
and

selector
levers
in

N

8
Connect

inhibitor
switch
wires

Notes

a
Refer
to

covering
topic

under

Checking
and

adjusting

inhibitor
switch
on

page

AT
51

b

Inspect
and

adjust
switch
as

above
whenever
it
has

to
be

removed
for

service

9
Check
inhibitor
switch
for

op

eration

AT
34
Starter
should

be

brought
into

op

eration

only
when
selector
lever
is
in

P
and
N

positions
it

should
not

be

started
when
lever
is
in
D

2

1
and
R

positions

Back

up
lamp
should
also

light

when
selector
lever
is

placed
in
R

position

10
Check
level
of
oil
in

transmis

sion
For
detailed

procedure
see

page

AT
49

II
Move

selector
lever

through
all

positions
to
be
sure
that
transmission

operates
correctly

With
hand
brake

applied
rotate

engine
at

idling
Without

disturbing

the

above

setting
move

selector
lever

through
N

to
D

to
2
to
I

and
to
R
A

slight
shock
should
be

felt

by
hand

gripping
selector
each

time
transmission
is

shifted

Note
See

page
AT

50
for

checking

enigne

idling

12

Check
to
be

sure
that
line

pres

sure
is
correct

To

do
this
refer
to

relative

topic
under

Testing
line

pres

sure
on

page
AT
53

13

Perform

stall
test

as

per
the

instructions
on

page
AT

51

Removal
and

installation

I

Disconnect
control
knob
from

hand
lever

by
removing
a
screw

Remove

console
box

Disconnect
shift
rod

from
cross

shaft

4
Remove

hand
lever

hand
lever

shaft
and
shift
rod

assembly
with

bracket

To

install
reverse
the

order
of

removal
CHASSIS

Adjustment

The

adjustment
of

linkage
is

as

important
as

Inspection
of
Oil

Level

for
the
automatic

transmission

Therefore

great
care
should

be

exercised
because
defective

adjustment

will

result
in

the
breakdown
of

the

transmission

Loosen

adjust
nuts

@
See

Figure
AT

51

2
Set
hand

lever

CD
and

selector

range
lever

@
at
N

position
See

Figure
AT
51

AT

36
3

Set
lower

shift
rod

@
to

trunnion

@
by

turning
in
or

out

adjust
nuts
See

Figure
AT
I

After

adjusting
make
sure

that

hand
lever
can
be

set
in

any
position

correctly
and
that
hand
lever

operates

properly
without

any

binding

If
levers
do
not

operate
satisfactori

ly

readjust
or

replace
parts
as
neces

sary

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

I

J

It

r

I

x

f

Fig
AT
54

Remouing
valve

body

tt

l

v

AT121

Fig
A
T
55

Loosening
band
en
a

Fig
AT
56

Removing
oil

pump

AT123

Fig
A
T
5
7

Removing
band
strut

Fig
A

T
SS

Removing
connecting
shell
CHASSIS

5
Remove

bolts
which
hold
valve

body
to
transmission
case
See

Figure

AT
54

6
Loosen
lock
nut

2
on

piston

stem

CI
as

shown
in

Figure
AT
55

Then

tighten
piston
stem
in
order
to

prevent
to
fall
front

clutch
drum
down

when
oil

pump
is
withdrawn

7

Pull
out

input
shaft

8
Withdraw
oil

pump
using
Sliding

Hammer

S125850000
Exercise
care

not
to
allow
front
clutch
to
come
out

of

position
and

drop
onto
floor
See

Figure
AT

56

9

Remove
band

strut
This
can
be

done

by

loosening
piston
stem
further

See

Figure
AT
57

10
Remove
brake
band
front

clutch
and
rear

clutch
as
an

assembled

unit

11

Remove

connecting
shelt
rear

clutch

hub
and

front

planetary
carrier

as

a
unit
See

Figure
AT
58

12

With
the

aid
of

Snap
Ring
Plier

HT69860000

pry

snap
ring
off

output

shaft

See

Figure
AT
59

13

Remove

connecting
drum
and

inner

gear
of
rear

planetary
carrier

as

an

assembly
See

Figure
AT
60

14

Remove

snap

rings
and

then

remove
rear

planetary
carrier
internal

gear
connecting
drum

one

way
clutch

outer

race
and
one

way
clutch
in

this

written

order

15
Remove

rear
extension

loosen

ing
securing
bolts

See

Figure
A
T
6I

16
Pull
out

output
shaft
remove
oil

distriburor

2
together
with

governor

valve
D
See

Figure
AT
62

17

Pry
off

snap
ring
using
a

pair
of

pliers
Remove

retaining

plate
drive

plate
driven

plate
and
dish

plate
in

this
written
order
See

Figure
AT

63

AT
38
Fig
AT
61

Removing
rear

extension

I
AT128

Fig
A
T
62

Removing
governor
and

oil
distributor

AT129

Fig
A

T
63

Removing
drive
and

driven
plates