1979 DATSUN 210 Release

Condition

Clutch
chatters

Noisy
clutch

Clutch

grabs
Clutch

Probable
cause
and

testing
Corr
ctive
action

Clutch

chattering
is

usually
noticeable
when
car
is

just
rolled
off
with
clutch

parlially

engaged

Weak
or

broken
clutch
disc
torsion

spring

Oil
or

grease
on
clutch

facing

Clutch

facing
out

of

proper
contact
or

clutch
disc
runout

Loose
rivets

Warped
pressure
plate
or
clutch
cover

surface

Unevenness
of

diaphragm

spring
toe

height

Loose

engine
mounting
or
deteriorated

rubber

A
noise
is

heard
after

clutch
is

disengaged

Damaged
release

bearing

A

noise
is

heard
when
clutch
is

disengaged

Insufficient

grease
on
the

sliding
surface

of

bearing
sleeve

Clutch
cover

and

bearing
are
not

in

stalled

correctly
Replace

Replace

Replace

Replace

Repair
or

replace

Adjust
or

replace

Retighten
or

replace

I
Replace

Apply
grease

Adjust

A
noise
is
heard
when
car

is

suddenly
rolled
off
with

clutch

partially
engaged

Damaged
pilot
bushing

I
Replace

When

grabbing
of
clutch
occurs
car
will
not
roll
off

smoothly
from
a

standing
start
or
clutch

will

be

engaged
before
clutch

pedal
is

fully
depressed

Oil
or

grease
on
clutch

facing

Clutch

facing
worn
or

loose
rivets

Wear

or
rust

on
splines
in
drive
shaft

and
clutch
disc

Warped
flywheel
or

pressure
plate

Loose

mountings
for

engine
or

power

train

units

CL13
Replace

Replace

Clean
or

replace

Repair
or

replace

Retighten

DISASSEMBLY

TRANSMISSION
CASE

DISASSEMBLY

I

Prior
to
disassembling
traiIsmis

sian

thoroughly
wipe
off
dirt

and

grease
from
it

2
Drain

oil

thoroughly

3

Remove
dust
cover
from
trans

mission

case

Remove
release

bearing
and
with

drawallever

4

Remove
reverse

lamp
switch
and

top
detecting
switch
if

equipped

5
Remove

speedometer

pinion
as

sembly

6
Remove

nut
and

stopper
pin
bolt

from
rear
end
of
rear
extension

TM783

Fig
MT
6

Removing
Nut
and

Stopper
Pin
Bolt

7

Remove
return

spring
plug
return

spring
reverse
check

spring
and

plunger
from
rear
extension

@

@

j

TM784

Fig
MT

7
Rt

moving
Return

Spring
Plug

8
Remove
front
cover
Detach

0

ring
and
front
cover

adjusting
shim

TM785

Fig
MT
B

Removing
Front
Cover

a

Ring
and

Adju

ting
Shim
Manual
Transmission

9
Remove
main

drive

bearing
snap

ring
with

snap
ring

pliers

o

TM188

Fig
MT

9
Rt

mouing
Main
Drive

BNring
Snap
Ring

10
Remove

rear
extenSion

secUring

baits
and
turn
the

striliing
rod

clock

wise

Drive
out
rear
extension

backward

by
lightly
ta

pping
around
it

with
a

soft

hammer

TM787

Fig
MT
10

Removing
Rear
Extemion

11

Separate
transmission
case
from

adapter
plate
by
evenly
tapping

around
it

with
a
soft
hammer

CAUTION

Do
not

pry
transmission
case
or
rear

extension
from

edapter
plate
with

screwdriver

TM788

Fig
MT
II

Removing
Tronsmiuion

COSf

MT

5
12

Set

up
Adapter
Setting
Plate

KV32100300

on

adapter
plate

Place
the
above

assembly
in

a
vise

TM789

Fig
MT
12
A

ttaching
Gear

A
mbly

to

Special
Tool

13
Detach
counter

gear
thrust

washer

DISASSEMBLY
OF

GEAR

ASSEMBLY

Shift

forks
and
fork
rods

I

Drive

out

retaining

pins
from

each
fork

rod
with
Fork

Rod
Pin

Punch

ST23540000

TM790

Fig
MT
13
Drive
Out

Retaining
Pim

2

Drive
out
reverse

gear
shift
fork

and
reverse
idief

gea

TM791

Fig
MT
14

Driving
Out
Re
1dkr

Gear
and

Shift
Fork

4

Install

stopper
pin
bolt
into
rear

extension

and

tighten

l
J
Tightening
torque

Stopper
pin
bolt

0
5
to
0
8

kg
m

3
6
to
5
8
ft
lb

Be

sure
to

apply
sealant
before

installation

Stopper

pin
bolt
Sealant

TM814

Fig
MT
62

Installing
Stopper
Pin

Bolt

5

Apply
grease
to

plunger
and
in

stall
it
in
rear
extension

6

Install
reverse

check

spring
and

return

spring

Apply
locking
sealer
to
return

spring
plug
and
install
it
in

place

l
J
Tightening
torque

Return

spring

plug

0
5
to

1
0

kg
m

3
6

to
7
2
ft
lb

TM815
Plunger

Reverse
check

spring

Return

spring

Return

spring
plug

Fig
MT
63

Installing
Return

Spring

Front
cover

assembly

1

Select
front
cover

adjusting
shim

as
follows

I

Using
vernier

caliper
depth
gauge
Manual

Transmission

measure

depth
A

from
front
end
of

transmission

case
to
main
drive

bearing

outer
race
with
front

cover
adjusting

No
A

mm
in

I

2

3

4

5

6

7
shim
in

place

2

Select
a

shim
of
thickness
A

measured

Adjusting
shim

mm
in

6
05
to
6
09
0

2382
to
0
2398

6
10
to
6
14

0
2402
to
0
2417

6
15
to
6

19
0
2421
to

0
2437

6
20
to
6
24

0
2441
to

0
2457

6
25
to
6
29

0
2461
to

0
2476

6
30
to
6
34

0
2480
to

0
2496

6
35
to
6
39
0

2500
to
0
2516
0
50
0

0197

0

55
0
0217

0

60
0
0236

0
65

0
0256

0

70
0
0276

0
75

0
0295

0

80
0
0315

TM816

Fig
MT
64
Meaauring
Front
Cover

Adjusting
Shim

CD

1

Transmission
case

2
Main
drive

gear

3

Adjusting
shim

4

Bearing

TM817

Fig
MT
65

Selecting
Front
Co
r

Adju
ting
Shim

2

Clean

mating
surfaces
of
front

cover
and
transmission

case

3

Install
front
cover
to

transmission

case
with

the

adjusting
shim
and
0

ring
in

place

l
J
Tightening
torque

Front

cover
installation
bolt

1
0
to
1
6

kg
m

7
to
12
ft
Ib

Outer

parts
assembly

Install

speedometer
pinion
assem

MT15
bly
and

install

securing
bolt
and

tighten

l
J

Tightening
torque

Speedometer
Ieeve

locking

plate

bolt

0
3
to
0
5

kg
m

2
2
to
3
6
ft
Ib

2

Install
reverse

lamp
switch

and

tighten
At
the

same
time
install

top

detecting
switch
if
so

equipped

Be
sure
to

apply
locking
sealer

before
installation

l
J
Tightening
torque

Revene

lamp
switch
and

top
detecting
switch

2
0
to
3
5

kg
m

14
to
25
ft
Ib

3

Apply
a

light
coat
of
multi

purpose
grease
to
withdrawal
lever

release
bearing
and

bearing
sleeve
in

stall
them

on
transmission
case

After

connecting
them
with

holder

spring
install
dust
cover
to
transmis

sian

case

4

Install
control
lever

temporarily

and

move
shift
control
lever

through

all

gears
to
make

sure
that

gears

operate
smoothly

5

Install
drain

plug
coated
with

sealant
in

place

l
J
Tightening
torque

Drain

plug

2
5
to
4
0

kg
m

18
to
29
ft
Ibl

6
Make

sure
that
main

drive
shaft

rotates

smoothly
in

Neutral

Main

drive

gear
rotating
torque

Les
than
1

8

kg
cm
1

6
in

Ibl

DISASSEMBLY

TRANSMISSION
CASE

DISASSEMBLY

1
Prior
to

disassembling
transmis

sion

thoroughly
wipe
off
dirt
and

grease
from
it

2

Drain
oil

thoroughly

3
Remove

dust
cover
from
trans

mission
case

Remove
release

bearing
and

with

drawallever

4
Remove
reverse

lamp
switch

and

top
detecting
switch

if
so

equipped

5
Remove

speedometer
pinion
as

sembly

6
Remove

nut
and
stopper

pin
bolt

from
rear

end
of
rear
extension

Fig
MT
71

Removing
Nut
and

Stopper
Pin
Bolt

7
Remove

return

spring
plug
return

spring
and

plunger
from
rear
exten

sion

@

@
Q

@

j

TM784

Fig
MT
72
Removing
Return

Spring
Plug

8
Remove

front
cover
Detach
0

ring
and

front
cover

adjusting
shim

1l
l

TM785

Fig
MT
73

Removing
Front
Cover

D

Ring
and

Adju
ting
Shim
Manual
Transmission

9
Remove
main
drive

bearing
snap

ring
with

snap
ring
pliers

Fig
MT
74

Removing
Main
Drive

Bearing
Snap
Ring

10
Remove
rear
extension

securing

bolts
and
turn

striking
rod
counter

clockwise

Drive
out
rear

extension
backward

using
a

standard

puller

TM548

Fig
MT
75

Removing
R
ar

Extension

11

Separate
transmission
case
from

adapter
plate
by
evenly

tapping

around
it

with
a
soft
hammer

CAUTION

00
not

pry
transmission
case
or
rear

extension
from

adapter
plate
with

screwdriver

TM262A

Fig
MT
76
Removing
Tran

miuion

Ca
e

MT19
12

Set

up
Adapter
Setting
Plate

KV32100300
on

adapter
plate

Place
the
above

assembly
in

a
vise

TM230A

Fig
MT
77
A

ttaching
Gear

Assembly
to

Special

Tool

13

Detach
counter

gear
thrust

washer

DISASSEMBLY
OF

GEAR
ASSEMBLY

Shift
forks

and
fork
rods

1

Drive
out

retaining
pins
from

each

fork
rod
with

Fork
Rod
Pin

Punch
ST23540000

TM231
A

Fig
MT
78

Driving
Out

Retaining

Pim

2

Remove
three
3

check
ball

plugs

TM232A

Fig
MT
79

Removing
Check
Ball

Plug

3

Drive
out
fork
rods
from

adapter

plate
by
lightly

tapping
on
the

front

end

Detach
shift
forks

Note

a
Be
careful

not
to
lose
three
3

check
balls
and
two
2
interlock

plungers

b
Each

gear
and
shaft
can
be
de

tached
from

ar1apter
plate
without

removing
each
fork
rod

CD

@

1

Check
ball

p1
8

2
Fork
rod
Reverse

Ist

3
Interlock

plu
er

4

Fork
rod
2nd

3rd

5
Fork
rod
4Ih
5th

6

Check
ball

TM793

Fig
MT
BO

Check
Ball

nd
Interlock

Plunger

Gear

a

embl

Note
It
is

necessary
to

measure
end

play
before

disassembling
main

shaft
and
after

reassembling
main

shaft
Refer
to

Inspection
for
Gears

and
Shafts

1
Remove

snap
ring
of
rnainshaft

end

bearing
Draw
out

b
aring
using

Bearing
Puller
KV32
10
1330

Remove

olher
sna

p
ring
of
rnainshaft
end
bear

ing

TM233A

Fig
MT
BI

Removing
Mainshaft

End

Bearing

2
With
1st
and
2nd

gears

doubly

engaged
release

staking
on

main
shaft

nut
and
loosen
it
Manual
Transmission

TM234A

Fig
MT
B2

Releaaing
Staking
on

Mainshaft
Nut

3
Remove

following
parts
from

mainshaft
in

rear
extension

side

I
Mainshaft
hut

2
Remove

shifting
insert
retainer

synchro
hub

with
reverse

gear
1st

gear

togeth
r
with

needle

bearing
and
bush

ing
and
idler

gear
together
with

needie

bearing
simultaneously

3

Thrust
washer

Fig
MT
83

Removing
Reverw

Main

Revere

Idler
and

1st

Gea

4
Remove

four
4

bearing
retai
er

attaching
screws
with

an

impact
driver

and

remove

bearing
retainer

Fig
MT
B4

Removing
Screw

MT

20
5
Remove

folloWIng
parts
from

counter

gear
rear
end

I
Retaining
ring

TM236A

Fig
ltiT

85

Removing
Retaining

Ring

2

1st
counter

gear
using
Gear
Pull

er
ST22480000

ST22480000

TM237A

Fig
MT
86

Remouing
l
t
Counter

Gear

6
Remove

snap
ring
from
mainshaft

rear

bearing

using
snap

ring
pliers

TM238A

Fig
MT
B7
Removing
Main

haft

Rear

Bearing
Snap
Ring

7
Drive

out
rnainshaft

gear
as

sembly
together
with

counter

gear

assembly
by
lightly
tapping
the
rear

end
with
a

sofl
hammer
while

holding

the
front
of
rnainshaft

gear
assembly

and
counter

gear
assembly

by
hand

No

A

mm
in
Manual
Ttansniissio
n

Adjusting
shim

mm
in

0
50
0

0197

0
55
0

0217

0
60
0

0236

0
6

0

9756

0
70
0

0276

0
75
0
0295

0
80
0
0315
I

2

3

4

5

6

7
6
05
to

6
09
0
2382
to
0

2398

6
10to
6
14
0

2402
to
0
2417

6
15
to

6
19
0
2421

to
0
2437

6
20

to
6
2

4

9
1
41

t
19
2457

6
25
to

6
29
0
2461
to

0
2476

6
30
to
6

34
0
2480

to
0
2496

6
35
to
6
39
0
2500
to

0
2516

TM816

Fig
MT
131

MetuUring
Front

CoV
r

Adju
ting
Shim

1

Transmission

case

2
Main

drive

gear

3

Adjusting
shim

4

Bearing

TM817

Fig
MT

132

Selecting
Front

CoV
r

Adju

ti1l8
shim
2

Clean

maling
surfaces
of
front

cover

and
transmission

case

3
Install
front
cover
to
transmission

case
with
the

adjUsting
shim
and
0

ring
in

place

@
Tight
ning
torque

Front

co
erinstallation
bolt

1
0
to
1
6

kg
m

7

to
12
ft

Ib

Outer

parts
assembly

I
Install

speedometer

pinion
assem

bly
and
install

securing
bolt
and

tighten

@

Tightening
torque

Speedometer

sl
locking
plate

bolt

0
3
to
0
5

kg
m

2
2
to
3
6
ft

lb

2

Install
reverse

lamp
switch
and

tighten
At
the

same
time

install

top

detecting
switch
if

so

equipped

Be

sure
to

apply
locking
sealer

before
installation

MT30
@
Ti
ltening
torque

Rewene

lamp
switch
and

top
detecting
switch

2
0
to
3
5

kg
m

14

to
25

fHb

3

Apply
a

light
coat

of
multi

purpose
grease
to

withdrawal
lever

release

bearing
ahd

bearing
sleeve
in

stall
them
on
transmission
case

After

connecting
them
with

holder

spring
install

dust

cover
to

transmis

sion

case

4

Install

control
lever

temporarily

and

move
shift
coritrol
lever

through

all

gears
to
make

sure
that

gears

op
rate

smoothly

5
InstaU
draiiI

plug
coated

with

sealant

in

place

@
Tightening

torque

Drain

plug

2
5
to
4

0

kg
m

18
to
29
fHb

6
Make

sure
that
main
drive

shaft

rotates

smoothly
in

Neutral

v
Jin
drive

gear
routing
torque

less
than
1
8

leg
em
1
6
in
Ib

Automatic
Transmission

HYDRAULIC
CONTROL
UNIT
AND

VALVES

The

hydraulic
or
a
tomatic
control

system
is

comprised
of
four
4
basic

groups
the

pressure
supply
system

the

pressure
regulating
system
the

flow
control
valves
and
the
friction

elements

PRESSURE
SUPPLY
SYSTEM

The

pressure
supply
system
consists

of

a

gear

type
oil

pwnp
driven

by
the

engine
through
the

torque
converter

The

pump
provides

pressure
for
aU

hydraulic
and
lubrication
needs

PRESSURE
REGULATOR

VALVES

The

pressure
regulating
valves
con

trol
the

output
pressure
of
the
oil

pump

Pre
ure

rellulator
valve

The

pressure
regulator
valve
con

trois
mainline

pressure
based
on

throttle

opening
for
the

operation
of

the
band
clutches
and

brake

Governor

valve

The

governor
valve
transmits

re

gulated
pressure
based
on
car

peed

to
the

shift
valves
to
control

upshifts

and
downshifts

Vacuum
throttle
valve

The
vacuum

throttle
valve
transmits

regulated
pressure
based
on

engine

load
vacuum
This

pressure
controls

the

pressure
regulator
valve

Also
this

pressure
is

applied
to
one
end
of
the

shift
valves
in

opposition
to

governor

pressure
which
acts

on
the
other

end

of
the
shift
valves

controlling

upshift

and
downshift

speeds
FLOW
CONTROL
VALVES

Manual
valve

The
manual
valve
is
moved

manual

Iy
by
the
car

operator
to
select
the

different
drive

ranges

1
2
ShHt
valve

The
1
2

shift
valve

automaticaIly

shifts
the
transmission
from
first

to

second
or
from
second
to
first

depend

ing

upon
governor
and
throttle

pres

sure

along
with

accelerator

position

solenoid
downshift
valve
See

Hy

draulic
Control
Circuits
Drive

2

2
3
ShHt
valve

The
2
3
shift
valve

automaticaIly

shifts
the
transmission
from
second
to

top
gear
or
from

top
to
second
de

pending

upon
governor
and
throttle

pressure
or
accelerator

position
sole

noid
downshift
valve

See
Hydraulic

Control
Circuits
Drive
3

Range

2
3

Tlmlnll
valve

For
2
3
shifts
a
restrictive
orifice

slows
the

application
fluid
to
the
front

clutch
while
the

slower

reacting
band

is
allowed
to
release
This

prevents
a

hard
2
3
or
3
2
shift
Under

heavy

load
however
the

engine
will
tend
to

run

away
during
the
2
3

or
3
2
shift

pause
therefore
a
2
3

timing
valve

using
throttle
and

governor

pressure
is

used
to

bypass
the

restrictive
orifice

during
such

heavy
load
conditions

Solenoid
down
hHt
valve

The
solenoid
downshift
valve
is

activated

electrically
when
the
ac

celerator
is
f1oor
d

causing
a
forced

downshift
from

top
to
second

top
to

first
or

second
to

first

gear
depending

upon
car

speed
governor

pressure

AT
3
Pre
ure
modified
valve

The

pressure
modifier

valve
assists

the
mainline

pressure

regulator
valve
in

lowering
mainline

pressure
during

high

speed

light
load
conditions
such
as

steady

speed
cruise

Governor

pres

sure

working

against
a

spring

opens

the

valve
which
aUows

modified
throt

tle

pressure
to
work

against
the

pres

sure

regulator
valve

spring
lowering

mainline

pressure
Lower

operating

pressure
under

light
load

reduces
oil

temperature
and
increases
transmis

sian
life

Throttle
back
up
valve

The
throttle

back

up
valve
assists

the
vacuum
throttle
valve
to

increase

line

pressure
when
the
manual
valve
is

shifted

either
to

2
or
I

range

Second
lock
valve

The

second
lock
valve
is

used
to

bypa
the
1
2

shift
valve

to
maintain

the
band

apply

pressure
in
2

posi

tion
The
valve
is
also
used
as
an
oil

passage
for
the
1
2

shift
valve

band

apply

pressure
in

D2

D3
and

12
Range

CLUTCHES
AND
BAND

SERVOS

The

servo

pistons
of
the
clutches

low

reverse
brake
and

band
are
moved

hydraulically
to

engage
the

clutches

brake
and

apply
the
band
The
clutch

and

brake
istons

are
released

by

spring
tension

and
band

piston
is

released

by
spring
tension

and

hy

draulic

pressure

OIL
CHANNEL

IDENTIFICATION

The
circuit
numbers
shown
in
each

Hydraulic
Control
Circuit
are

classified

as
follows
according
to
the

function

Pressure
source
of
the
line
7

Operating
line

pressure
for

friction
elements

I
2
3
4
5
6

g
9

10
11
12

Auxiliary
line

pressure
13

Torque
converter

pressure
14

Governor

pressure
15

Throttle

system
pressure

16
17
18

19

Oil
pump
discharge
hole
7

f
Torque
converter

pressure
14

Rear
clutch

pressure
1

Front
clutch

pressure
11

W
h0i1
pu
6
suction
hote

e

8

IIlIlJJIII
Automatic
Transmission

L

f

AT106

Fig
AT
5

Oil
Channela
in
Cou
Front
Face

lo
o

o
0

Oil

pump
discharge
hole
7
Governor

pressure
15

1

h

Torque
converter
I

pressure
14
0
0

Servo
release

Rear
clutch

l
press
re

10
r

L

Governor
reed

pressure
1

pressure
1
Servo

tlghtemng

li
nb

o

0

pressure
9

r

Front

clutch
fI
Low
reverse
brake

pressure
12

pressure
11

U
0

111
1

1
P
u
n

e

AT107

ATlOS

Fig
A
T
4

Oil
Channell
in
Oil
Pump
Fig
A
T
6
Oil
Channell
in
Cou
Fac

MECHANICAL
OPERATION

In

the
3N71B
automatic
transmis

sion
each

part
operates
as
shown
in

the

following
table
at
each
gear
select

position
RanKe
Cm

ratio
Clutch
Low
A

Front
Rear

brake
One

w

y

dutch
Parkin

pa
l
Band
servo

Operation
Release

Park
on
on

Reftrst
2
182
on

on
on

Neutral

Dl
Lo
2
458
on

on

Drift
02
Second
1
458
on

03

Top
1
000
on
on
on

2
Second
1
4
8
on
on

12
Second
1458
on
on

Low
2
4
8
on
on

Note
The
low
brake
is

applied
in

11
raiW
to

prevent
free
whee6ng

when
coasting
and
aIlows
engine

braking

AT
5