1979 DATSUN 210 manual transmission

HT6100800

Fig
AT
75

Dilaaumbling

ValwBady

2

Remove

attaching
bolts
With

bolts
removed
lower
valve

body

separate
plate
and

upper
valve

body

are
free

for
rem
wl

CAUTION

00

not
IIlow

orifice
c111C1l
VIlv8

end

weIn

spring
In
1

nIn

body
to
be

I
and
lost
wilen

removinglllp

aratll

plata
Automatic
Transmission

Sf

3

Pull
out
manual
valve

4

Remove
side

plate
Take
out

Ist
2nd
shift
dve

2nd
3rd
shift

valve

pressure
modifier

valve
and

Wee
valve

springs

Fig
AT
77

Remouing
Manual
Vallie

r
p

g

1

Prasur
e

ul8t
m

g

qrJ
0

ew
o

afW
e

f
rio
UIiltOi

SeccQdJock

V81V
AT171

HT61000800

Fig
AT
78

Remouing
Bide
Plote

CAUTION

00
not
work
it
off
With

rivers

To
syoid

damaging
m
in8

screws
do

not
work
it
off

with
screwdriver

5
Remove
side

plate

pull
out

pres

sure

regulator
valve
second
lock
valve

pressure
regulator

plug
and
two
valve

springs

6
Remove
side

plate
With
side

plate
removed
solenoid
downshift

valve
throttle
back

up
valve

vacuum

throttle
valve
2nd
3rd

timing
valve

and
three
valve

springs
are
free
for

removal

2ncr
3fiftiming

2
Jd
3rd

shift
WiIVeL
q

SOJe
nod

00

ibiIi
aMi

P

iWWi
m
d
fiii
va
iOtt

tii
jJ
v

Fig
AT
79

ComponentaPartaofeontrol
Value

AT
36

Automatic
Transmission

Inspection

I
Check
valves
for

sign
of

burning
tension
if

necessary

replace
5

Check
oil

passages
in
valve

body

and
if

necessary
replace
4
Examine

for

any

sign
of

damage
for

sign
of

damage
and
other
condi

2
Check
to

be
certain
that

oil
or

score
marks
on

separate
plate
If
tions

which
might
interfere
with

prop

strainer
is
in

good
condition
If
found

left
unheerlcd
oil

will

bypass
correct
er
valve

operation

damaged
in

any
manner
discard
oil

passages
causing
many
types
of

6
Check
bolts
for

stripped
threads

3
Test
valve

springs
for
weakened
abnormalities
in
the

system
Replace
as

required

Valve

spring
chart

Mean
coil
Installed

Wiredia
No
of

Free

length

Valve

sprma

mm
in
dia

active
coil

mm
in
Length
Load

mm
in

mm
in

kg
lbl

Manual
detent
1
3
6
0
15
0
32
4

26
5
5
5

0
051
0
236
1
276
1
043
12
1

Pressure

regulator
1
2
10
5
13
0
43
0
23
5
2
8

0
047
0
413

1
693
0
925
6
2

Pressure
modifier
0
4

8
0
5
0
18
5
9
0
0
1

0
01
6
0
315
0
728
0
354
0

2

2nd
shift
0
6

6
0
f

16
0
32
0
16
0
0
625

1st

0
024
0
236
1
260
0
630
1
378

2nd
3rd
shift
0
7
6
2
18
0
41
0
17

0
1

40

0
028
0
244
1

614
0

669
3

09

2nd
3rd

timing
0
7
5
5
15
0
32
5
27
0
0
55

0
028
0
217
1
280
1
063

1
21

Throttle
back

up
0
8
6
5

14
0
36
0
18
8
1
92

0
031
0
256

1417
0
740
4

23

Solenoid
downshift
0
5
5
0
12
0
22
0
12
5
0
60

0
0217
0
197
0
866
0
492

1
32

Second
lock
0
55
5
0
16
0
33
5
21
0
0
60

0
0217
0
197

1
319
0
827
1
32

Throttle

relief
0
9
5
6

14
0
26
8
19
0
2
19

0
035
0
220
1

055
0
74g
4
83

Orifice
check
0
23

4
77
12
0
15
5
11

5
om

0
0091

0
lg78
0
610
0
453
0
02

Primary
governor
0
45
8
3
5
0
21
8
7

5
0
215

0
0177
0327
0
858
0
295
0
474

Secondary

governor
0
7
8
5
5
5
25
2

10
5
1
10

0
028
0
335
0
992

0
413
2
43

T
37

Place
the
vehicle
in
a

pit
and

by

sampling
the
lealeed
oil
deiermine
if
it

is
the

torque
converter
oil
The

torque

converter
oil
has

a
color
like
red
wine

so
it
is

easily

distinguished
from

engine

oil
or

gear
oil

Wipe
off
the

lealeing
oil
and

dust

and
detect
the

spot
of
ill

lell8e

nonflammable

organic
solvent
such
as

carbon
tetrachloride
for

wiping

Raise
the
oil

tcmperature
by

op

erating
the

engine
and
shift
the
lever

to
D

to
increase
the
oil

pressure

The
sp

Q
of
o
1

1I8
u

J1en
be

found
more

easily

Note
As

oil

leakage
from
the
breath

er
does
not
talee

place

except
when

running
at

high
peed
it

iSimpos

sible
to
ate
this

lealcage
with

vehicle

stationary

CHECKING
ENGINE
IDLING

REVOLunON

The

engine

idling
revolution
should

be

properly
adjusted

If
the

engine
revolution
is

too
low

the
e

gine
does
not

operate
smoothly

and
if
too

high
a

strong
shocle
or

creep
develops
when

changing
over

from
ON
to

Dn
or
R

CHECKING
AND

ADJUSTING

KICK

WN

SWITCH

AND

DOWNSH
FT

SOLENOID

When
the
Ieickdown

operation
is

not
made

properly
or
the

speed

chang

ingpoint
is
too

high
check
the
kick

down
switch
downshift
solenoid

and

wiring
between
them
When
the

igni

tion

Ieey
is

po
iti
ned
at
the
1st

stage

and
the
accelerator

pedal
is

depressed

deeply
the
switch

contact
hould

be

closed
and
the
solenoid
should
clicle
If

it
does

not
click
it

indicates
a
defect

Then
check
each

part
with
the

testing

inatrumen15
Auto
lT1atic

Transmissiqn

Fi
J
A
T
84
Down

ltift

Sole
id

Note
Watch
for
oil

leekage
from

tnnsmission
case

INSPECTION
AND

ADJUSTMENT
OF

MANUAL

LINKAGE

The

adjustmcnt
of
manual

linkage

i

equany
important
as

Inspection
of

Oil
Level
for
the
automatic
transmis

sion
Therefore

great
care

should
be

cxercised
oecause

incorrect

adjustment

will
result
in
the

breakdown
of
the

transmission

Inspection

pun
the
selector
lever
toward

you

and
turn
it
as
far
as
p
to

range

where
clicks
will
be
ell

by
the
hand

This
is
the

detent
of
manual
valve
in

the
valve

body
and
indicates
the

corrett

position
of
the
lever

Inspect
whether
the

pointer
of

selector
dial

corresponds
to
this

point

and
also
whether
the
lever
comes
in

alignment
with
the

stepping
of

posi

iion

plate
when
itis
released

CHECKING
AND
ADJUSTING

INHIBITOR

SWITCH

The
inhibitor
switch

lights
the

re

verse

lamp
in
the

range
R

of
the

transmission

operation
and
also
rotates

the

starter
motor
in

the

ranges
N

and
P

AT
40
i

j

tI

IlV

@

@

AT

I

Inhibitor
switch

2
Manual
shaft

3
Washer

4

Nut

5
Manual

plate

Fi
J
AT
85
Comtruction

of
Inhibitor

Switch
6
Nut

1

Washer

8

Inhibitor
wilch

9

Ran
q
Iect
lever

Check
w

ethcr
he
leverse

lal
1p

and

the
starter
motor

operate
nonnal

Iy
in
these

ranges
If
there
is

any

trouble
first
check
the

inkage
If
no

defect
is

fo
nd
in

the

Ii
leage
check

tlie

inhibitor
Swi
ch

Separate
the
manual

lever
from
the

remote
control
selector
rod
and
turn

the

range
select
lever
to
N

Note
In
the

position
N

the
slot
of

the

manual
shaft
is
vertical

Using
the
tester
check
the
two

black

yellow
BY
wire

from
the
in

hibitor
switch
in

the

ranges
N
and

p
and
the
two
red
blacle
RB
wires

in

the

lange
R
for

continuity
Turn

range
select
lever
in

both
directions

from
each
lever

set

position
and
check

each

continuity
range
It
is

normal
if

the

electricity
is
on
while
the
lever
is

within
an

angle
of
about
30

on
both

sides
from
each
lever
set
line
How

ever
if
its

continuity
range
is

obvioUs

ly
u
nequal
on

both
sides

adjustment
is

required

If

any
malfunction
is

found
un

screw
the

fastening
nut
o
the

range

selector
lever
and

two

fastening
bolts

of
the
switch

body
and
then

remove

the
machine
screw

under
the
switch

body
Adjust
the
manual

shaft
correct

Iy
to
the

position
N

by
means
of

the

selector

leVer

When
the
slot
of
the

shaft
becomes
vertical
the
detent

worles
to

position
the
shaft

correctly

with
a

clicking
sound

Move
the
switch

slightly
aside

so

that
the

scie
hole
will
be

aligned

with
the

pin
hole
of
the
internal

rotor

combined
with
the
manual

shaft
and

check
their

alignment
by

inserting
a

1
5
mm
0
059
in
diameter

pin
into

the

holes
If
the

alignment
is

correct

fasten
the
switch

body
with
the
bolts

pull
out
the

pin
tighten
up
the
screw

in

the
hole
and
fasten

the
selector

lever
as
before
Check

the

continuity

pin
with
the
lesler
If

Ihe
malfunc

tion
still
remains

replace
the
inhibitor

switch

STALL
TEST

The

purpose
of
this
test
is
to
check

the
transmission
and

engine
for
trou

ble

by
measuring
the
maximum
num

bers
of
revoiutions
o
the

cngine
while

vehicle
is
held
in

a
stalled

condition

The
carburetor
is
in

fullthrollle

opera

tion
with
the
selector
lever
in

ranges

1
2
and
I

respectively
Com

pale
the
measured

results
with
the

standard

values

Components
to
be
tested
and

test
itelJUl

I

Clutches
brake
and
band
in
trans

mission
for

slipping

2

Torque
converter
for

proper
func

tioning

3

Engine
for
overall

properly

STAU

TEST
PROCEDURES

Before

testing
check
the

engine
oil

and

torque
converter

oil
warm

up
the

engine

cooling
w

ter
to

suitable
tem

perature
by

running
at
1
200

rpm
with

the

selector
lever
in
the

range
P

for

sevcral
minutes

Warm

up
the

torque

converter
oil

to
suitable

temperature

60
to
lOOoC

140
to
2120F

I

Mount
the

engine

tachometer
at
a

location
that

allows

good
visibility

from

the
driver

s
seat
and

put
a
mark

on

specified
revolutions

on
the

meter

2

Secure
the
front
and
rear
wheels

with
chocks

and

apply
the
hand

brake

Be
SIIre

to

depress
the
brake

pedal

firmly
with
the
left
foot
before
de

pressing
the

accelerator

pedal

3
Throw
the

selector
lever
into
the

range
11

4

Slowly

depress
the

accelerator

pedal
until
the

throttle
valvc
is

fully
Automatic

Transmission

opened
Quickly
read
and

record

the

engine
revolution

when
the

engine

begins
to
rotate

steadily
and
then

release
the
accelerator

pedal

5
Shift
the
selector
lever

to
N

and

operate
the

engine
at

approxi

mately
1
200
rpm
for
more
than
one

minute
to
cool

down
the

torque
con

verter
oil
and
coolant

6
Make
similar
staU
tests
in

ranges

2
I
and
R

CAUTION

The

dill
test

operstion
81

specified
in

i18m
4

should
be

I118de
within

fiv

lIeonds

If
it
tBkes
too

long
the

oil

If

and
the
cluti
hn
blllke

and
b
nd

elll

ly
I
Suf

ficient

cooling
time
should

be

given

r

eech
test
for
the
four

IlInges

0
Z
1
end
R

JUDGEMENT

High
stall
revolution

more
than

staitdard
revolution

If
the

engine
levolulion
in

stall

condi
ion
is

higher
than
the
standard

values
it
indicates

that
onc
or
more

clutches
in
the

transmission
are

slipping
and
therefore
no

further
test

is

required

For
the

following
abnormalities

the

respective
causes
are

presumed

High
rpm
in

all

ranges
low
line

pr
ssure

High
rpm
in
0

2
and
I

and

normal

rpm
in
6R

Rear
clutch

slipping

High
rpm
in
D

and
2
and

normal

rpm
in

One

way

clutch

slipping

High
Ipm
in
R

only
Front

clutch
or
low

and
reverse
brake

slipping

To

determine
which
is

slipping

front

clutch
or
low
and
reverse

brake

a
road

test
is

needed

If
while

coasting
after

starting

with
the
levcr
in
I

range
engine

braking
does
not

work

properly
the

low

and
reverse
brake
is

slipping

Otherwise
the
front
clutch
is

slipping

Slipping
of
the
band
brake
is
diffi

cuJt
to
ascertain

However
jf
it

occurs

with

the
lever
in
1

range
engine

AT
41
revolution
increases

up
to
the
same

level

as
in
1st

range
It

is

impossible

to

check
it
in
the

stall
test

2
Standard
stall
rnoluiion

If
the

engine
revoluiion
in

stall

ondition
is
within

he
standard

values
the
control
elements
are

nOf

mally

operating
in

the

ranges
D

2n
I

and
R

Also
the

engine
and
one

way

clutch
of
the

torque
converter
are

norinal
in

performance
and

operation

The

one

way
clutch

of
the

torque

converter

however
sometimes

sticks

This
is
determined

in
the
road

test

3

Lower

stall
revolution
than
lIand

ard

revolution

If

the

engine
revolution
in

stall

condition
is

lower
than
the

standard

values
it

indicates
that
the

engine
is
in

abnormal

condition
or
the

torque
con

verter
s
one

way
clutch
is

slipping

4
O
hers

I
If

the

accelerating
performance

is

poor
until
vehicle

speed
of

approxi

mately
SO

kmfh
30
MPH
is
attained

and
then
normal

beyond
that

speed
it

can
be

judged
that
the

torque
con

verte
c

s
one

way
clutch
is

slipping

2

If
the

torque
converter

sane

way
dutch
sticks

vehicle

speed
can

not

exceed

approximately
80

kmfh

SO
MPH
in
the

road
tesl

In
such

a

case
the

torque
converter

oil
tem

perature
rises

abnormally
and
so

special
care
is

required

3
If
the

transmission
does
not

op

erate

properly
at
all
vehicle

speeds
it

indicates

poor
engine
performance

ROAD

TEST

An

accurate

knowledge
of
the
au
to

matic

transmission
is

required
for
an

exact

diagnosis

II
is

recommended
that
a

diagnosis

guide
chart
with
the
standard

vehicle

speeds
for
each

stage
of

the

up
and

down

shiftings
be

prepared
Measured

vehicle

speeds
are
to

be
filled
in

the

adjoining
column
after
each

testing

Also
it

is
advisable
to

mount

a

stopper
for

positioning
the
throttle

opening

JUDGEMENT
IN
MEASURING

LINE

PRESSURE

Low

idling
line

pressure
in
the

ranges
D
2

R
and
P

This
can
be
attributed
to
trouble
in

the

pressure
supply
system
or
too
low

output
of

power
caused

by

I
A

worn
oil

pump

2
An
oil

pressure
leak
in
the

oil

pump
valve

body
or
case

3
A

sticking
regulator
valve

2
Low

idling
line

pressure
i

n
cer

tain

ranges
only

This
is

presumably
caused

by
an
oil

leak
in
the
devices
or
circuits
con

nected
to
the
relevant

ranges

I
When
there
is

an
oil

leaJi
in

the

rear
clutch
and

governor
the

line

pressure
in
on
2
and
I

are
low

but
the

pressure
i

nonnal
in

R

2
When
an
oil
leak
occurs
in

the

low
and
reverse
brake
circuit
the
line

pressure
in

oR
and
P
are
low

b
t

the

pressure
is

normal
in

0
2

and

I

3

High
idling
line

pressure

Thi
is

presumably
caused

by
an

increased

aC

1ulT
t
rott
e

pr
ssure

owing
to
a

leak
in

the
vacuum
tube
or

diaphragin
or
by
an
increased
line
Automatic
Transmission

pressure
due
to
a

sticking
regulator

valve

Vacuum

leakage
is
checked

by

directly
measuring
the

negative

pres

sure
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
emits
white
smoke

4
Item
to
be
checked
when
the

Ii

e

pressure
is

increasing

In
this

c
1eck
the
line

pressure

should
be
measured
with
vacuums
of

300

mmHg
Il

SI

inHg
and
0

mmHg

0

inHg
in

accordance
with
the
staIl

test

procedure

i
If
the
line

pressure
does
not
in

crease

despite
the
vacuum
decrease

check
whether
the
vacuum
rod
is

i

corporated

2

If
the
line

pressure
does
not
meet

tile
standard
iUs

caused
mostly
by
a

sticking
pressure
regulating
valve

pres

sure

regulating
valve

plug
or

amplifier

TROUBLE
SHOOTING

CHART

INSPECTING
ITEMS

I

Inspection
with
automatic
trans

mission
on
vehicle

AT
45
A

Oil
level

B

Range
select

linkage

C
Inhibitor
switch
and

wiring

D

Vacuum

diaphragm
and

piping

E
Downshift

solenoid
kickdown

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

quality

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

t

Leakage
of
oil

passage

u
One

way
clutch
of

troque
converter

v

One

way
clutch
of
transmission

w
Front

clutch
check
ball

x

Parking
linkage

y
Planetary
gear

Automatic
Transmission

TROUBLE
SHOOTING
GUIDE
FOR
3N71B

AUTOMATIC
TRANSMISSION

Ordel
Test
item

Checking
Oil
level

gauge

j
Downshift
solenoid

3
Manual

linkage

4

Inhibitor
switch

5

Engine
idling
rpm

6
Vacuum

pressure
of
vacuum

pipe

7

Operation
in
each

range

g

Creep
of

vehicle

Stall
test
1
Oil

pressure
before
t
sting

2
Stall
test

3

Oil

pressure
after

teSling

Road
test
L

Slow
acceleration

Ist
2nd

2nd
3rd

2

Quick
acceleration

Ist
2nd

2nd
3rd

3
Kick
down

operation

3rd
2nd
or
2nd
1st
Procedure

Check

gauge
for
oil
level
and

leakage
before
and
after
each

test

Check
for
sound
of

operating
solenoid
when

depressing

accelerator

pedal
fully
with

ignition
key
ON

Check

by
shifting
into

P
R
N
0
2
and

ranges
with
selector
lever

Check
whether
starter

operates
in
N
and
p

ranges
only

and
whether
reverse
lamp
operates
in
R

range
only

Check
whether

idling
rpm
meet
slandard

Check
whether
vacuum

pressure
is
more
than
450

mmHg

17

72

inHg
in

idling
and
whether
it

decreases
with

increasing
rpm

Check
whether
transmission

engages
positively
by

shifting

N

0
N

2
N
to
I

and
N
R

range

while

idling
with

brake

applied

Check
whether
there
is

any
creep
in

0
2

and

R

ranges

Measure
line

pressures
in
D
2
I
and
R

range
while

idling

Measure

engine
rpm
and
line

pressure
in
0
2
t

and

R

ranges
during
full
throttle

operation

Note

Temperature
of

torque
con
erter
oil
used
in

test

should
be
from
6

to
lOO

C
140
to
2120F

i
e
suf

ficiently
1

up
but
not

o
heeted

CAUTION

To
cool
oil
between
IIch
mil

test
for
OH
ZH
1
H

Ind

RH

nnges
idle

engine
i
e

rpm
It
Ibout

1
200

rpm
for

more
thin
1
minutll
in

P

nnge
MeeRlr
ment
time

mUlt

not
be
more
then
5

seconds

Same
as
item
1

Check
vehicle

speeds
and

engine
rpm
in

shifting
up
1

st

2nd

range
and
2nd
3rd

range
while

running
with
lever
in

D

range
and

engine
vacuum

pressure
of
about

200

mmHg

7
87

inHg

Same
as
item

1
above

except
with

engine
vacuum

pressure
of

o

mrnHg
0

inHg
i
e
in

position
just
before
kickdown

Check
whether

the
kickdown

operates
and
measure
the
time

delays
while

running
at
30
40

50
60
70
km
h

19
25
31

37
43

MPH
in

OJ
range

AT
49

Automatic
Transmission

Oil
strainer

to
lower

valve

body

Governor
valve

body
to
oil
distributor

Oil

pump
housing
to

9il

pump
cover

Inhibitor
switch
to
transmission
case

Manual
shaft
lock
nut

Oil
cooler

pipe
to
transmission
case

Test

plug
oil

pressure
inspection
hole

Support
actuator

parking
rod

inserting
position
to

rear
extension

Turn
back
two

turns
after

tightening
0
3
to
0
4

0

5
100
7

0
6
100
8

0
5
to

0
7

3
0
10
4
0

3
0105
0

14102
1

0
810
I
I

SPECIAL
SERVICE
TOOLS

Kent
Moore

No

Tool
number

tool
name
Reference

page
or

Fig
No

ST07870000
Transmission
case
stand

ST07860000
J

25607

Fig
AT
26

ST25850000

Sliding
hammer
J
25721

Fig
AT
30

HT69860000

Snap
ring
remover

Fig
AT
33

AT
53
Tool
number

tool
name

GG930
I
0000

Torque
wrench

ST25420001
Clutch

spring
compressor

ST25420000

ST25320001

Snap
ring
remover
2

2
to
2
9

3
6

to
5

1

4
3

to
5
8

3
6
to
5
1

22
to
29

22
to
36

10
to

IS

5
8

to
g

O

Kent
Moore
No

Reference

page
or

Fig
No

J
25703

Fig
AT
43

J
26063

Fig
AT

53

Fig
AT
60

125710

Fig
AT
53

Fig
AT

60

Propeller
Shaft
Diffe

ntial

Carrier

SERVICE
DATA
AND

SPECIFICATIONS

PROPEL1
ER
SHAFT

GENERAL

SPECIRCATIONS

Model

A
T
M
T

Type

Length
rnrn
in
2856A

1

045
4Ll4

1
177

46
34

68

1
713
Outer

dil
lluJ
er
rnrn

jn

SERVICE

DATA

Permissible

dynamic
unbalance

gr
cm
oz
in

rnrn
in
Axial

play
of

spider

journal

TIGHTENING

TORQUE

Shaft
to

companion

flange
bollS

kg

fil
ft
lb

DIFFERENTIAL
CARRiER

GENERAL

SPECIFICATIONS

Type

Automatic
transmission

equipped
models

Manual
transmission

equipped
models

Gear

ratio
number
of
teeth

Automatic
transmission

equipped
models

Manual
transmission

equipped
models

Drive

pinion
preload

adjusted
by

PO

tO
35

0
49
5

800

rpm

0
0

2
4
to
3
3l17

to
24

HI50

HI50A

3

889
35
9

3
700
37
10

Collapsible
spacer