1979 DATSUN 210 Transmission

D
RANGEKICKDOWN

To
achieve
a
forced
downshift
from

3rd
to
2nd
the

car

speed
must
be

under

approximately
100
km
h

60

mph
from
2nd

to
1st
il

must
be

under

approximately
50

km
h
30

mph
Fully
depressing
the
accelerator

pedal
energizes

jhe
dow
hift
sole

noid
which

opem
the

solenoid
down

shift
valve
Oil

pressure
is
then
exerted

against
the
shift
valves
Between
50

and
100
km
h
30
and
60

mph
this

pressure
will

close
the
2nd
3rd
shift

vd
t

go
mor

pressure
and

the
car
downshifts
When
the
car

speed

is
below

50
km
h
30

mph
the

Ist

2nd
shift
valve
will
be
closed
and

the
transmission
will
be
in
Isl

gear
A

car

speed
and

governor
pressure
in

crease
the
shift
valves

automaticaJJy

reopen
Autom
tic
Transmission

AT
18

Automatic
Transmission

D
nnse
klckdown
Shift
valvas
In
2nd
sear
position

Vacuum
control

dlophroem

r

r
X

I

i
jI

2

dl

2

l
s
o

@
i
i

JJ
1
1

I

N1
1

JJ

r
OI

r
J

@

I
J

ju
n

II

r
1
o

N
m

II
lln
pru
r

Gov
nor

Iud

pr
ssurel

1

x
x

S
condary
Primor

90V
nor

val

00
rnor

olv
Low

ond

brok

Brak

bond

2

Oil
cooler
I
r
J
80nd

no

C

a

i
0

J

P
N

R
ar

lubrication

aJ

8
ll

Ill

f
I

f

j
l

l
0
1

1

Throttl

drain

voh

i

Xl

U

II
CD

r

lIU
afor

volv

I

l
r

Go
rnor

pr
IU

Torqu
conv
t
r

pr
lur

TIl
rotll

p
lure

AT458

Fig
AT
18
Oil
Pr
mn
Circuit

Diagram
D

rong
kickdown

hift
va
v
s
in
2nd

gear
position

AT
19
X

Throttl

back

up

vain

F

w

I
P
b
I

1

Orific
18
16

ch
ck
X

val

1
r

@2n
3n
lShift

01

l
l

I

Automatic
Transmission

2
RANGE

2ND

GEAR

The

range
2

position
is
used
to

lock
the
car
in

2nd
gear

preventing

upshifts
or
downshifts
under

any
con

ditions
Fluid
flow

opening
the
valVe

and

alloWing
pr

sure
to

p
into

the
line
of
the

throttle
valve
thus

assuring
adequate

throttle

pressure
even

during
decelera

tion

J
he
downshift
solenoid
valve
is

used
as
a

passage
for
line

pre
re
to

lock

the
1

2
and
2
3
shift
valves
Po
r
flow

Power
flow
in
2

raogo
is
the
same

as
in

D2
range
Uoe

pressure
from
the

manual

valve

opens
the
second

lock
valve

against
spring

pressure
As

this
valve

opens
pressure
the
passes
to

apply

the
band
servo
Une

pressure
also

flows
to
the
throttle
back

up
valve

UlllV
I
Governor
Valve

IS
Pressure
Modifier
Valve

2nd
3rd

Timing
Valve

2nd
3rd
Shift
Valve

1st

2nd
Shift

Valve

1st
2nd
Shift
Valve

j
Rear
Clutch

2

1
Band
Servo

Apply
Side

l

Solenoid
Downshift
Vilve

1312nd
3rd
Shift
Valve

1st

2nd
Shift
Valve
Second
Lock
Valve
9

4

Throttle
Back

up
Valve
17

Vacuwn
Throttle
Vilve
16

l
Jre
ModifJerVilve

2nd
3rd
Shift
Valve

2nd
3rd

Timing
Valve

Throttle
Drain
Valve

Pressure

Regulator
Valve

AT
20

2

renge
2nd

Beer

Oil
cool

Reor
lubrication

o

4

Drain

oha

Fron

lubricaf

Drain

vol

x

x

I

Ii

6

II
D

r

ou
alar

01
1

4
Automatic
Transmission

J
R
or

j

j

I
r

r
Bond
0

0

41

9
10
Throttl

I
r
lc

uP

a

II

J
I

i
ll

fr

t

rr
1
1
I

i

Throttle

I
drain

ahe
j

01
1816

x
@Zn6
3rd
Shift

101
1

J

is

t1

1x

J

I
I
n

s

t
Z

l

n
S

II
I

1
1
1
II
IS

N

U

g
2nd
3rd

timing

X
vol

I
I
2

S
j

000j

Ul

I1
I

w

X
fo4anuol

P
R

lIo
Not
Morked
X
art
drain

Slcondory

govunor
ViII
Primor

go
nor

vol
line

pr
ur

Go
nor
lid

pr
ure

G
o
rnOI

pr

Torqul
con
r

p
JUri

Th
rotU

p
AT459

Fig
AT
19
Oil

ProIlU
Circuit

Diagram
2

range
2nd
tar

AT
21

Automatic
Transmission

l
RANGE

LOW
AND
2ND
GEAR
second

12
afwvernor
preSsure
pre

vents
the
I
2

shift
valve
from

closing

The

range
1

position
is
used
to

lock
the

car
in
1st

gear
preventing
any

upshifts
If
the
selector
lever
is

moved

to
the
I

position
while
the
car
is

moving
at

high

speeds
the
transmis

sion

w
ill
not

shift
into

first

gear
until

car

speed
slows
to

approxiniately
55

km
h
35

mph
Instead
it
will
shift
to
Po
r
flow

The

power
flow
in

11
differs

slight

ly
from

01
in
that

the
low
and

reverse

band

is

applied
to
hold
the

rear

gear

set

planet
carrier

providing
engine

hraking
Power
flow

in

12
is
the
same

a

io02

Manual
Valve
Governor
Valve
15
Pressure
Modifier
Valve
I
Fluid
flow

Lolft
ar

Manual

pressure
passing
through

the
1

2
shift
valve
is

used
to

close
the

1
2
shift
valve

preventing
a
1
2

up

shift

Manual

pressure
pusing
through

the

downshift
valve
lock
the
2

3
siuit

valve
closed

along
with

applying
addi

tional

closing
pressure
to
the
I
2

shift

valve

2nd
3rd

Timing
Valve

2nd
3rd
Shift
Valve

lst
2ndSti
ft

Valve
1st
2nd
Shift
Valve

iRea
Clutcb

I

4
Solenoid
Downshift
Valve
13

I2nd
3rd
Shift
Valve

ht
2nd
Shift
Valve

Throttle
Back

up
Valve

5
C

1st
2nd
Shift
Valve
12

I
Throttle
Back

up
Valve

y
Low
Reverse
Bra1ce

I

Fluid
flow
2nd
ar

Manual
Valve
Governor
Valve
15
Preuurc
Modjfier
Valve

2nd
3rd

Timing
Valve

2nd
3rd
Shift
Valve

1st
2nd
Shift
Valve
8
1st
2nd
Shift
Valve

Second
Lock
Valve
9

I
Band
Servo

I
Apply
Side

4
t
Rear
Clutch

I

Solenoid
Downshift
Valve
13

I
2nd
3rd
Shift
Valve

ht
2nd
Shift

Valve

Throttle
Back

up
Valve
17
PreSlure
Modifier
Valve

2nd
3rd
Shift
Valve

2nd
3rd

Timing
Valve

Throttle
Drain
Valve

s
ht
2nd
Shift
Valve
Pressure

Regulator
Valve

AT
22

Il

j

rJl

12
I
ff1

Bond

i

Vacuum
r
o

CI

tlltOfflt

9
10

volY

11

I
11

J

I
H
H

1
r
II

J

1

6

Otific

ch
ck

101

I
24

ol
TO

6

3

X

r

6
3

tA
g

@2n
r3

1
ift
j

I

In

s

U

g
2nd
3rd
Ii
mln

II

III

1

1

S
dI
c

I

1

ir

lJX
l

Il

I
n
l
3

if
p

2

1
f1

1
5
15

1

11
6

1

X

X

PnmOfJ

r
01
1
0
1
10
Secon
or

101
1

QO
l
rnor
X
all
droin
Not

Mork

r
ud
pr
uu

Go
llrno
L
in

P
USUf
Irtr

ov
rnat

pt
u

1
1
G

r
ur

Torqu
convut
r

p

TII

totUt

pr
ur
I
Low

geer

renge

Torqut
conv
rt

Iii

cool
Ip
r
uur

TIC

tlno
101

I

RIot
lubri
c

oJion

i

4

Fron

lubricat

0

1

Xl

6
6

II
CD

r
r

0
Transmission

Automatic

R
ar

lCh

I

l

I
II

21
12
IL
t

2

j
Sh
1
olQ1

Circuit

Diagram
Oil
Pn
sure

Fig
AT
20
AT460

Low

g
ar

11
rang

AT
23

X

F
1

2

dll
U
Sflift
lllvI

21

I

S
nd

lock

6

Ir

II

P

UX
6

I
Mo
ol

f

L
t

u
uu
u
u

I

f5

LI

P
OI

I
Go
o

fo
d
P
I

ren
e
2nd
eer

Torqul
con
rter

Oil

pump

Oil

tool

RIAr
Ivbri
cor
ion

D

Orain

fa
hi

Front

lubrici
lti

0
0
0

1
I

tU

x

j
Pr

l

UQU
010r

Yol

u

1
Automatic
Transmission

Front

lulch
Riot

x

l

N
r

N
N

I
I

i
l
I
18
16

ahl

J
@

Vacuum

Huottl

Vol

if

J
II

Throttl

drain

yol
l

II
@2ft
3rd
Shiff

101
1

iii

1J

g
2nd

3rd

timino

101
11
8

Goy
rnor

prlUUAI

Torque
Cony
tar

pr
r

Th
toni

pt
ure
Slcondor

governor
vol
1
Primo

00
vlrnor
va

AT461

Fig
AT
21
Oil
Pr
Circuit

Dwgrom

12
ro

2nd
ear

AT
24

Automatic
Transmission

REMOVAL
AND

INSTALLATION

TRANSMISSION

ASSEMBLY

When

dismounting
the
automatic

transmission
from
a
car

pay
attention

to
the

following
points

I
Before

dismounting
the
trans

mission

rigidly
inspect
it

by
aid
of
the

Trouble

shooting
Chart
and
dis

mount

it

only
when
coll5idered
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
car

proceed
as
follows

I

Disconnect

battery
ground
cable

from
terminal

2

Disengage
torsion

shaft
from
ac

eelerator

linkage

3

Jack

up
vehicle
and

support
its

weight
on

safety
stands
Recommend
a

hydraulic
hoist
or

open
pit
be

utilized

if
available

Make
sure

that

safety
is
insured

4
Remove

propeller
shaft

Note

Pl
ll
up
the

openina
in

the
rear

extension
to

prevent
oil
from

flow

ing
out

S

Disconnect
front
exhaust
tube

6
Disconnect
selector

ra
8e
lever

from

manual
shaft

7
Disconnect
wire
connections

at

inhibitor
switch

8

Disconnect
vacuum
lube
from

vacuum

diaphragm
and
wire
connee

tions

at
downshift
solenoid

9

Disconnect

speedometer
cable

from
rear
exlension

10
Disconnect
oil

charging

pipe

II

Disconnect
oil
cooler

inlet
and

outlet
tubes
al
transmission

case

12

Support

engine
by

locating
a

jack
under
oil

pan
with

a
wooden

block
used

between
oil

pan
and

jack

Support
transmission

by
means
of
a

transmission

jack
CAUTION

Do
not

plecs
the

jack
under
the
oil

pin
dnin

plug

13
Detach
converter

housing
dust

cover
Remove
bolts

securing
torque

converter
to
drive

plate

AT261

Fig
A
T
22

Removi
Torqu

Converter

Attachirrg
Bolt

Note
Before

toni
COD

v
ter
ICnlJe
match
mark
011
two

parts
10
that

they
may
be

replaced

in
their

original
position
at
sa

sembly

14
Remove
rear

engine
mount
Se

curing
bolts

and
crossmember
mount

i
8
bolts

IS
Remove
starter
motor

16
Remove
bolts

securing
transmis

sion
to

engine
After

removing
these

bolts

support
engine
and
transmission

with

jack
and
lower
the

jack
gradually

until
transmission
can
be
removed
and

take
out
transmission
under
the
ear

Note

P1
I
up
the

opening
such
u
oil

chergina
pipe
oil
cooler
tuba
etc

CAUTION

Take
cin
in

dismounting
tnnStnlllioA

not
to

strike

any
adjacent
paru

INSTALLATION

Ill5tallation
of
automatic
transmls

sian

on
car
is

reverse
order
of
removal

However
observe
the

following
in

stallation
notes

Drive

plate
runout

Turn

crankshaft

one
full
turn
and

measure
drive

plate
runout
with

indi

AT
25
eating
finger
of
a

dial

gauge
rested

against
plate

Maximum

ellowable
runout

0
5
mm
0

020
in

AT268

Fig
A
T
3

Me
uring
Drive
PIote

Runout

2
Installation
of

torque
converter

Line

up
notch
in

torque
converter

with
that
in
oil

pump
Be
extremely

careful
not
to
eause
undue
stresses
in

parts
In

inataIIing
torque
converter

AT116

Fig
A
T
24

Torqu
Converter

A

ligning
Cut

3
When

connecting

torque
con

verter
to
transmission
measure
dis

tance
A

10
be
certain
that

they
are

correctly
assembled

Distance
HA

Melre
irian
21

5
mm
0

846
in

A

AT117

Fig
AT
26

1116talling
Torque

Convert
r