1973 DATSUN B110 service

A

e
@
wWD@

mQD
1

p

DATSUN
1200

MODEL
B
11
0

SERIES

l
NISSAN

I

4

l
l
f
t

NI

SSAN
MOTOR
CO
LTD

TO

Yi
lIAPAN
SECTION

AT

AUTOMATIC

TRANSMISSION

DESCRIPTION

HYDRAULIC
CONTROL

SYSTEM

REMOVAL
AND

INSTALLATION

MAJOR
REPAIR
OPERATION

TROUBLE

DIAGNOSES
AND

ADJUSTMENT

SERVicE1
DATA
AND

SPECIFICATIONS

t
i
fr

lr

lo
i
1

4
1
p

i

AT
2

AT
4

AT
33

AT
31

AT
49

Al
60

1
r

1

i
J

The
model
3N71
B

automatic
trans

mission
is
a

fully
automatic
unit
con

sisting

primarily
of
element

hydrau

lic

torque
converter
and
two

planetary

gear
sets
Two

multiple
disc

clutches
a

muItiple
disc
brake
a
band
brake
and

a

one

way
sprag
clutch

provide
the

friction
elements

required
to

obtain

the

desired
function
of
the
two

plane

tary
gear
sets

The

two

planetary
gear
sets

give

three

forward
ratios
and
one
reverse

Changing
of
the

gear
ratios
is

fully

automatic
in

relation
to

vehicle

speed

and

engine

torque
input
Vehicle

speed

and

engine
manifold
vacuum

signals

are

constantly
fed
to
the
transmission

to

provide
the

proper
gear
ratio

for

maximum

efficieq
cy
and

performance

at
all

thrqttIe
openings

The

iMiij
l

3N7I
B
has

six
selector

position
f

P
R
N
D

2
1

k
Park

position
positively
locks

the

c
ut

put
shaft
to
the
transmission

case

RY
means
of
a

locking
pawl
to

prev
nt
the
vehicle

from

rolling
either

direction

This

position
should
be
selected
when

ever
the

driver
leaves
the

vehicle

The

engine
may
be
started
in
Park

pQlition

OR
Reverse

range
enables
the

vehicle
to
be

operated
in

a
reverse

direction

N
Neutral

posItion
enables
the

engine
to
be

started
and
run
without

driving
the
vehicle
CHASSIS

DESCRIPTION

D
Drive

range
is
used
for

all

normal

driving
conditions

Drive

range
has

three

gear
ratios
frum

the

starting
ratio

to
direct
drive

2
2

range
provides
performance

for

driving
on

slippery
surfaces
2

range
can
also

be
used

for

engine

braking

2

range
can
be

selected
at

any

vehicle

speed
and

prevents
the
trans

mission
from

shifting
out

of
second

gear

I

range
can
be

selected
at

any
vehicle

speed
and
the
transmission

will

shift
to
second

gear
and

remain
in

second
until

vehide

speed
is

reduced

to

approximately
40
to
50

kmfh
25

to
31

MPH

I

range

position
prevents
the

transmission
from

shifting
out
of
low

gear
This
is

particularly
beneficial

for

maintaining
maximum

engine
braking

when
continuous

low

gear

operation
is

desirable

The

torque
converter

assembly
is

of

welded
construction
and
can
not
be

disassemble
for
service

Fluid
recommendation

Use

having

only
in

mission
automatic

transmission
fluid

DEXRON
identifications

the
3N7I

B
automatic
trans

AT
2
IA
e

l
csr
4o

J

r
s

Identification
number

Stamped
position

The

plate
attached
to

the

right

hand

side
of
transmission
case
as

shown
in

Figure
AT
I

ii

II

r

4
1
r

I

to
i

AT057

Fig
AT
1

Identification
number

Identification
of
number

arrangements

See
below

Model
code

JAPAN

AUTOMATIC

Z
TRANSMISSION
CO
LTD

I
MODEL

XOIOO

J
I
NO
2412345

Unit
number

Number

designation

2
4
2
3
4

5

L

Seriat

production

number

for
the

month

Month
of

production

X
Oct
Y
Nov
Z

Dec

Last

figure
denoting

the

year
A
D

r

IN
This

quality
product
has
been

packaged

by
hand
If

you
have

any
difficulty
please

mention

my
number
in

your
correspondence

Thank

you

2655

HURST
PERFORMANCE
INC

50
WEST
STREET

ROAD

WARMINSTER
PA
18974

ATTENTION
CUSTOMER
SERVICE
j

PLACE

STAMP

HERE

LIMITED

WARRANTY
Your

Hurst

product

warranted

per

table

below

Irom

dale
01

purchase

against

defects

materinl

and

workmanship

Dur
ing

this

period

luch

defects

will

be

repoired

the

product
will

be

chllnQl

d

at

Huut

option

without

charge

This

war
onty

does

damiilge

used

bv

milu

lI

alteration
negligence

ALL

IMPLIED

WARRANTIES

INCLUDING

BUT
NOT

LIMITED

TO

WARRANTIES

OF

FITNESS

AND

MER
CHANTABllITV

ARE

LIMITED

IN

DURATION

TO

A

PE
RIOO

ENDING

WITH

THE

PERIOD

OF

THE

CORRESPOND
ING

EXPRESS

LIMITED

WARRANTY

AS

SET

FORTH

BE
LOW

UNDER

NO

CIRCUMSTANCES

WILL

HURST

BE

RE
SPONSI8LE

FOR

INCIDENTAL

OR

CONseQUENTIAL
DAMAGES

ARISING

FADM

OR

IN

CONNECTION

WITH
THE

INSTALLATION

OR

USE

OF

ANY

HURST

PRODUCT
Some

tates

do

not

allow

limitations

on

how

long

implied
warranty

lasts

do

not

allow

for

tha

Axclusion

limitation

of
incidental

nnlequantial

damages

the

above

limitations
may

not

apply

to

you

This

Warranty

givlIs

you

specific

legal
righta

and

you

may

also

have

other

rights

which

Vpry

from
state

to

state

Return

of

the

Product

Registration

Card

nOt
nndition

precedent

Warranty

nvAraga

and

performance
HURST

WARRANTY

PERIODS

from

cJ

ffI

of

purch

lt
I
Shift

rs
Air

Shocks

12monttlt
12

OOOmil

or

12month1
whch

ver

lim
gOd

vl

12montl1s
12montl1s
12montl1s
Aoeellories
Tr

Rlmission

Oil

Coolers
Autom

tic

Tr

umitsion

P

rh
Scl1i

f

rPloductt

J

c

udinll
producrr

u

d

fOT

rw

ingl
Bring

the

product

or

nd

it

pOttage

preplidf

Hurst
Performance

Inc

or

IIuthorized

doaler

If

you

end

the

product
pleas

write

letter

IIxplaining

the

01

your

difficulty
HURST

PERFORMANCE

INC
50

West

Street

Road
Warminnl
r

PennsylvlInlll18974
In

tha

ellenl

you

have

any

questions

rning

IInd
of

the

product

rning

pleese

write
Customer

Satisfaction

Depertment

lit

above

addreu
How

To

Get

Quick

Service
1

Peck

your

Hunt

product

r

nrefully

good

IriOn

with
plenty

of

newspape

s

u

celsior

padding

all

mund

it

and

till
lIly

Oamllge

transit

not

nv

red

by

the

warranty
2

Carefully

prinl

the

lrton

thlll

name

Ind

Iddrllu

01

Hurl
above

Don

t

forget

your

return

addreu
3

Put

I

tter

showing

desired

n

lIlope

addressed
HUrl

above

In

your

lettllr

plellSe

be

to

give

full
formation

such

date

and

place

of

purchase

your

full

name
IInd

address

and

the

reptllrS

d

sired
4

PASTE

ENVELOPE

TO

PACKAGE
S

Put

First

CIBst

stamp

nvelope

IInd

Parcel

Pall

stamps
package

then

mail

The

Post

Office

will

tell

yOU

the

proper
amount

of

postage

and

against

Iou

the

mDils

z
it
l
l

III

0
1168

a

o

o

i
g

I
o

0

DO
o

0
I

t
i

lL

5
I

0

q

II
1

I

if
18

0

l

q
t

tJ

w
j

b

00000

i

I
a

1
I

S
z
I
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o
i

i
I
c

q
3

10

w
ol
8

q

1

5

lj

I
u

i

i
i

@

z

i

i
tii

I

f
8

ts

I

5

i

a

s
fl

00000000000000
C
a
0
u
Z
o
a
ti
a
w
a
u
J
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o
a

lIt

c
l
l
c
l

J
Ci
I

J
I

I
a

1111

i
Z

iRI
1

Ii
iD

i
8
1

I

1I
o
0

1
o

011
Dl
DI

oj
o

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

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

L
J

i

C

E

Ee

1f

20mm

8

0

079
in

AT148

Cut
off
hatched

portion

Fig
A
T
80

Modifying
of
coil

spring

compres
or

3

Take
out

spring
retainer

j
and

spring@
See

Figure
AT
7

4

Blowout

piston
by
directing
a

iet

of
air

into
hole
in
clutch
drum
See

Figure
AT
I

Fig
AT
81

Blowing
out

pi3ton

Inspection

I
Check

for

sign
of
wear
or

damage

to
clutch

drive

plate
facing
If
found

worn
or

damaged
excessively
discard

See
Service
Data
for

limits

2

Check
for

wear
on

snap
ring
and

for
weakened

or
broken
coil

spring

If

necessary
replace
with
new

ones

Spring
retainer

should
also
be
in

spected
for

warpage

Assembly

I

Assembly
is

reverse
order
of

disas

sembly

Dip
aU

parts
in
clean

auto

matic

transmission

fluid
before

they

can
be
installed

2

Line

up
driven

plates
so
that

stripped
arcs
are

properly

aligned
pay

iog
particular
attention

to
the
location

of
oil
holes
in
clutch

drum
See

Figure

AT
82

Note
The

number
of
drive

and
driven

plates
varies
with
the

type
of

vehicles
For
detailed

informa

tion
also

see
Service
Data

Specifications
CHASSIS

AT150
Lubrication

hole

Fig
A
T
82

Inserting
clutch

plate

3

After
clutch
is

assembled
make

sure
that
clearance
between

snap
ring

CD
and

retaining
plate

@
is
held

within

specified
limits
If

necessary

try
with
other

plates
having
different

thickness
until
correct
clearance
is

obtained
See

Figure
AT
3

Specified
clearance

1

6
to
1

mm

0
063

to
0
071
in

Available

retaining
plate

No

Thickness
mm
in

I
10
6
0
417

2
10
0
425

3

11
0
0
433

4
11
2
0
441

5
II

4
0
449

6
11

6
0
457

AT151

Fig
A
T
83

MeOJluring
ring
to

plate

clearance

4

Testing
front

clutch

With
front

clutch
assembled
on
oil

pump
cover
direct
a

jet
of
air
into

hole
in
clutch

drum
See

Figure

AT
4

AT
42
Fig
A
T

84

Tesling
front
clutch

Rear

clutch

Disassembly

CD
ID

@

f

@

@

I
J

L
@

@

@

AT269

I
Rear

clutch
drum
6

Retaining
plate

2
Piston

7

Spring
retainer

3
Di
ed

plate
8

Drive

plate

4
Coil

spring
9

Driven

plate

5

Snap
ring

Fig
A
T
85
Sectional
view

of

Tear
clutch

I
Take

out

snap

ring
@

retaining

plate
@
drive

plate

l
driven

plate

@
and

dished

plate

j
Same
tech

nique
can
be

applied
as
in
disassem

bling
front
clutch
See

Figure
A

T
5

2
Remove

snap
ring
from
coil

spring
retainer
See

Figure
AT
6

ST25420000

ST2542000l

Ii

Removing
snap
ring

3

Blowout

piston
by
directing
a

jet

of
air
into

hole
in

clutch
drum
See

Figure
AT
S
7

AT155

Fig
AT
87

Blowing
out

piston

Inspection

Refer
to

covering
topic
under

Front
Clutch

Assembly

Assembly
is

reverse
order
of
disas

sembly
Dip
all

parts
in

clean
auto

malic
transmission

fluid
before

as

sembling
Note
that
the
number
of

drive
and
driven

plates
varies
with

types
of
vehicles
For

details
refer
to

Service
Data

Specifications

I
After
rear

clutch
is

assembled

check

to
be

sure
that

clearance
be

tween

snap
ring
CD
and

retaining
plate

CV
is
held
within

prescribed
tolerances

See

Figure
A

T
S8

Specified
clearance

1
0

to
1
5

mm

0
039

to
0

059
in

AT1S6

Fig
A
T
88

Measuring
ring
to

plate

clearance

2

Testing
rear
clutch

Install
rear
clutch
on

oil

pump

cover

Blow
air
under

pressure
into
oil

hole
to
listen
for

definite
clutch

opera

tion

as
shown
in

Figure
AT
S9
AUTOMATIC
TRANSMISSION

AT157

Fig
AT
89

Testing
rear
clutch

Low
reverse
brake

Disassembly

I

Follow

steps
as

per
instructed
on

page
AT

38

2

Blowout

piston
by

directing
a

jet

of
air
into
oil

hole
in
clutch

piston

Inspection

I

Check
drive

plate
facing
for
wear

or

damage
if

necessary
replace
Refer

to
Service
Data

Specifications
for

limits

2
Test
if

piston
return

spring
is

not

weakened

Discard
if

weakened
too

badly
beyond
use

3

Replace
any
defective

parts
with

new

ones

Assembly

1
After
low

reverse

piston
is

installed
assemble
thrust

spring
ring

return

spring
thrust

washer
and
one

way
clutch
inner
race

With
the

aid
of

Hex

head
Extension
ST25570000

tighten
hex
head
slotted
bolt
1
3
to

1
8

kg
m
9
4

to
13
ft

Ib

2

Enter
dished

plate
driven

plate

drive

plate
and

retaining
plate
into

transmission

case
in

this
written
order

Install

snap
ring
to
secure

the
instal

lation

Note
The
number
of
drive
and
driven

plates
varies
with

types
of
vehi

cles
For

detailed
information

refer
to
Service
Data

Specifi

cations

AT
43
3

Without

disturbing
the
above

setting
check
to
be

sure
that
clearance

between

snap
ring
and

retaining
plate

is

held
within

specified
limits
If

nec

essary
try
with

other

plates
having

different
thickness
until
correct

clear

ance
is

obtained

Specified
clearance

O

SO
to
1

05
mm

0
031

to
0
041
in

4
Blow
under

pressure
air
into

oil

hole
in
low
reverse

brake
to

listen

for
definite
brake

operation
as
shown

in

Figure
AT
90

0j

L
J

1
1

I
1

I
Y

1
If

lY
v

A

we
1

a
II
I

7
r

AT158

Fig
AT
90

Testing
low
reverse

brake

Servo

piston

Disassembly

1
Blowout

piston
by
directing
a

jet

of
air
into

hole
in

release
side

of

piston

2
Remove

servo

piston
return

spring

Inspection

Check

piston
for
wear

damage
or

any
other
defects
which

might
inter

fere
with

proper
brake

operation

AT159

Fig
A
T
91
Removing
piston