1979 DATSUN 210 brake light

sion

pressure
chances
are

that

piston

rings
are

worn
or
damaged

2

If

pressure
stays
low

the
likeli

hood
is
that
valve
is

sticking
or

seating
Engine
Tune

up

improperly

3

If

cylinder
compression
in

any

two

adjacent
cylinders
is
low

and
if

adding
oil
does
not

help
the

compres
sion
there
is

leakage
past
the

gasketed

surface

Oil
and

water
in
combustion
cham

bers
can
result
from
this

problem

IGNITION
AND

FUEL
SYSTEM

CHECKING
BATTERY

I

Remove
six
vent

plugs
and
check

electrolyte
level
in
each

battery
cell
If

necessary
pour
distilled
water

Overflow
Correct

Shortage

t
t
j

t

t
t

EE358

Fig
ET
6

Checking
Electrolyte

Level
2
Measure
the

specific
gravity
of

battery
electrolyte

E
T372

Fig
ET
7

Checking
Specific
Gravity

of
Battery
Electrolyte

Over
1
22
Full

charge
value

at
200C
680F

1
28

1
26
Permissible
value

Frigid
climates

Other
climates

Note

a
Clean

top
of

battery
and

terminals

with
a

solution
of

baking
soda
and

water
Rinse
off
and

dry
with
com

pressed
air

Top
of

battery
must

be

c1
n
to

prevent
current

leakage

between
terminals
and
from

posi

tive
terminal
to
hold
down

clamp

b
In

addition
to
current

leakage

prolonged
accumulation
of
acid
and

dirt

on

top
of

hattery
may
cause

blistering
of
the
material

covering

ronnector

straps
and
rorrosion
of

straps

c
Afte
r

tightening
terminals
coat

them
with

petrolatum
vaseline
to

protect
them
from
corrosion

CAUTION

If
the

battery
cables
are
disconnected

they
should
be

tightly
clamped
to
the

battery
terminals
to
secure
a

good

contact
Over
I

20

CHECKING
AND

ADJUSTING

IGNITION
TIMING

Check

spark
plugs
for
condition

2

Thoroughly
remove
dirt
and
dust

from
crank

pulley
at

timing
mark

location

and
front
cover
at

timing

indicator

3
Warm

up
engine
sufficiently

4
Connect

engine
tachometer
and

timing
light
in
their

proper
positions

5

Adjust
idling
speed
to
the

specifi

ed
value

Idling
speed

Manual
transmission

700

pm

Automatic
transmission

6S0

rpm

in
0

position

ET
S
WARNING

When
selector
lever
is
shifted
to

0

position
apply
parking
brake

and
block
both
front
and
rear

wheels
with
chocks

Note

a
On
FU
models

set

idling
speed

with

distributor
vacuum
hose
dis

connected

b
Disconnect

distributor
vacuum

hose

at

distributor

diaphragm
side
and

plug
hose
with
blind

plug
See

Fig

ET
8

ET501

Fig
ET

B
Disconnecting
Distributor

Vacuum
Hose

6
Check

ignition
timing
with
a

timing
light
to
ensure
that
it
is

adjust

ed
to

specifications
indicated
below

Ignition
timing

Manual
transmission

SO
B
T
0
C
f700

rpm

California
FU
models

100
B
T
0
C
f700

pm

Non
California
Canada

models

Automatic
transmission

SO
B
T
0
C
f6S0

rpm

California
models

DASH
POT
SYSTEM

These

carburetors
are

equipped

with
a
dash

pot
interlocked
with
the

primary
thrott
Ie
valve

through
a

link

mechanism

The
dash

pot
prevents
the

throttle

valve

from

closing
abruptly
thereby

reducing
He
emissions

during
deceleia

tion
or

gear
shifting

In
automatic

transmissi9fi
models

it

also

prevents
engine
stall

resulting

from

quick
application
of
the
brake
or

from

quick
release
of
the

accelerator

pedal
after
it
s
been
tread

upon

slightly

INSPECTION

AND

ADJUSTMENT

CARBURETOR
IDLE
R
P
M

AND
MIXTURE
RATIO

CO
idle
adjustment
with

CO
meter

Refer
to
Carburetor
Idle

rpm
and

Mixture
Ratio
Section
ET
for
check

ing
and
a

justment

CO
idle

adjustment
without

CO
meter

Non
California
models

Refer
to

Carburetor
Idle

rpm
and

Mixture
Ratio
Section

ETl
fot
check

ing
and

adjustment

Idle

limiter

cap

Refer
to
Idle

Limiter

Cap

SeCtio

ET
for

checking
and

adjustment

FUEL

LEVEL

I

With

engine
idling

visually
check

fuel
level

through
sight
window
of

float
chamber

Fuel
level
is
correct

if
it

is
at
the

indicator

point

Note

Fuel
level
indicator

point
is

located
IS
mm
0
59
in
below

top

of
carburetor

body
H

as
shown
in

Figure
below
Engine
Fuel

EF088A

Fig
EF
33

Checking
Fuel
Level

To

adjust
fuel
level

proceed
as

follows

2

Remove
choke

chamber

3

Turn
down

choke
chamber

to

allow

float
to

come
into
contact
with

needle

valve
and

measure
H

shown

below

When
H

is

approximately
15
mm

0
59
in

top
float

position
is
correct

The

top
float

position
can
be
ad

justed
by
bending
float
seat

Upon

completion
of
the

adjust

ment

check
fuel

level
with

attached

level

gauge

nhH

J

1
Float

2
Float

stopper
3
Float

seat

4
Needle
valve

Fig
EF
34

Adjusting
Floot
Level

EF

14
4

Adjust
bottom
float

position
so

that
clearance

hl
between

float

seat

and
needle

valve
stem
is
1
3
to
I
7
mm

0
051
to
0
067
in
when

float
is

fully

raised
Bend
float

stopper
as

required

5

Install
choke
chamber

6
After

adjustments
in

steps
3
and

4
above
have
been

made
make

sure

that
when
fuel
is
delivered
to
the

float

chamber
the

fuel
level

is
maintained

within
the

specified
value

H

INSPECTION

Entire

system

U
S
A
MIT

models

except
FU
mo

el

1
Ensure
that

wiring
connectors
are

tight
in

pla
ce

2
Ensure
that

vacuum
hoses

are

properly

cof
1o
c
ed
to

their

positions

3
Ensure
that
distributor
vacuum

controller

properly
functions

4

Set

timing
light
and
start

engine

S

While

engine
cooling
water
tem

pefature
is
below

SOOC

I220F

check
function
of

system
as
follows

WARNING

To

protect
against
accidental
for

ward

surge
engage

parking
brake

firmly
while
above
check
is

being

made

I
Run

engine
and

keep
it

at

ap

proximately
1
600

rpm

2

Disengage
clutch
Shift

gears
in

top
3rd
then
neutral

positions
Read

spark

timing
in

respective
shift

posi

tions

The

system
is

properly

functioning

if

spark
timir
g
does
not

change

If
t

changes
check
thefmal
vacuum

valve

3

port
type

Note

Ensure
that
thermal
vacuum

wIve

is
closed
when

cooling
water

i
below

5
to
lSoC
41
to

640F
or

above
SO

to
630C
122
to
14S0F

I

6

After
the

engine
has
been

warmed

up
sufficiently
check
the

function
of
the

system

again
in
the

I

Same
manner

The

system
is

properly
functioning

if

spark
iimin
advances
in

top
posi

tion

If

not
check
thefmal
vacuum
valve

control

circuit
or
vaeu
um

switching

valve

Entire

system

FU
model
and

Canada
MIl
models

I
Ensure
that

wiri
lg
connectors
are

tight
in

place
Emission

Control

System

2

Ensure
that

vacuum

hoses
are

properly
connected
to
their

positions

3

Ensure
that

distributor
vacuum

controller

properly
fu
ctions

4

Set

timing
light

WARNING

To

protect

against
accidental
for

ward

surge
engage
parking
brake

firmly
while
above
check

is

being

made

5
Run

engine
and

keep
it
at

ap

proximately
1
600

1
m

6

Disengage
clutch
Shift

gears
in

4th

5th
ihen
neutral

positions
Read

spark
timing
in

respective
shift

posi

tions

The

system
is

properly
functioning

if

spark
timing
advances
in

top
gear

position

If

spark

timing
does
not

vary
at
all

in

tests
des
rilied

in

step
6
above

check

control
circuit
or

vacuum

switching
valve

Entire

system

California
AIT
models

I
Ensure
th
t

wiring
connectors

are

tight
in

place

2

Ensure
that
vacuum
hoses
are

properly
coIDwcted
to

thejr
positions

3

Ensure
that

distributor
vacuum

controller

function
s

properly

4
Set

timing
light
and
staft

engine

S

While

engine
cooling
water
tem

perature
is
below
SOOC
1220F

check
the
function
of
the

system
as

follows

WARNING

To

protect
againSt
accidental
for

ward

surge
engage

parking
brake

firmly
while
above
check
is

being

made

I
Run

engine
and

keep
it
at

ap

proximately
1

600

rpm
at
P

range

2

Make
a

short
circuit

between
the

specified
two
terminals
at
function

te
t

connector

EC31
The

entire

system

except
for
the

top
switch
is

properly

functioning
if

spark
timing
does
not

change
If

it

changes
check
the

thermal
vacuum

valve

3

pori

type

CAUTION

Pay
attention
not
to
make
a
short

circuit
between
other
terminals
than

the

specified
terminals
or
electrical

system
of
car
will

get

damaged

4

EC328A

Fig
EC
94

Making
Short
Circuit

6

After
ihe

engine
has
been

warmed

up
sufficiently
check
the

function
of
the

system
again
in
the

same
manner

The

system
except
for
the

top

switch
is

properly

fU
lctioning
if

spark

timing
is

approximately
greater
than

that
without

a
short
circuit

If

not
check
the

thermal
vacuum

valve

control
circuit
or

vacuum
switch

ing
valve

7
As
the
final

step
of

checking

entire

system
top
switch
should
be

checked

as
follows

1
Start

engine
and

keep
at

idling

speed

2

Disconnect
lead
wires
from
vacu

um

switching
valve

at
connetors

CAUTION

Never

forget
this

operation
otherwise

the
circuit

tester
will

get
damaged

EC173A

Fig
EC

95

Disconnecting
Vacuum

Switching
Valve
Connector

3

Apply
parking
brake
and

keep

brake

pedal
fully

depressed

4

Check

continuity
between
two

specified
terminals
ai

function
test

connector
with

gearshift
lever
in
R

or
N

position

The

top
detecting
switch
is

func

tioning
properly
if
the

continuity
is

as

following
table

If
not

replace
the
switch

N

position
No

R

position
Yes

Note
At

idling

CAUTION

Never

race
the

engine
or
car
will

creep

r

q

EC329A

Fig
EC
96

Checking
Top

Detecting

Switch

Arr
model
Emission
Control

System

Entire

system

Non
California
AfT
models

except
Canada

1

Ensure
that
vacuum

hoses
are

properly
connected
to

their

positions

And

confirm
that

gearshift
lever
is
in

P

position

2
Disconnect

vacuum
hose
atdis

tributor

vacuum
controller

3

While

engine
cooling
wat
r

is
be

low
SOoC

1220F
race

engine
and

check
vacuum
for
distributor
If
vacu

um
is
felt
check

thermal
vacuum
valve

3

port
type

4

After

engine
is

sufficiently

warmed

up
repeat
the
above

opera

tion

In

this
case
vacuum
should
be
felt

If
not
check
thermal

vacuum
valve

Vacuu
m

switching
valve

If

spark
timing
does
not

vary
at
all

in

checking
entire

system
check
vacu

um

switching
valve
i
follows

I
Warm

up
engine

sufficiently

2

Disconnect

vacuum

switching

valve

lead
wires

3

Set

timing
light
and

keep
engine

speed
at

approximately
1

600

rpm
On

AfT
models

geaishiftlever
should

be

in

N
or
P

4

Apply
l2V

battery
voltage
to

one
of
two

lead
wires

from
vacuum

switching
valve
Then
connect
the

other
lead
wire

to

ground

At

this
time

spark
timing
should

change

appioximately
by
50

If
it
does
not

replace
vacuum

switching
valve

EC175A

Fig
EC

97

Checking
Vacuum

Switching
Valv

Thermal
vacuum
valve

3
port

type
U
s
A
models

except
FU

model

Remove

thermal
vacuum

valve
from

engine
Inhale
air
from

port
of

spark

EC32
timing
amttol

systetn
andcheck
to

sure
that

thermal
vacuum
valve

opens

or
closes
in

response
to
its

tempera

ture

Thermal

vacuum
walye

closing

temperature

Above
50
to

63
c

122
to
1450
F

Below
5
to

1SoC

41
to

64
Fl

J

EC161A

Fig
EC
98

Checking
Thermal

Vacuum

Valv

CAUTION

Do

not
allow

water
to

get
inside

the

thenna

vacuum
valve

Top
detecting
switch

M
T
models

To

check

top
detecting
switch
for

proper
ON
OFF

operation
contact

leads
of

an
ohmmeter

with
swiich

lead

wires
and
shift
transmiosion

from

TOP
to
other
forward

gear
and

vice

versa
If

switch
does
not

operate
prop

erly
replace

Continuity
of

top
detecting
switch

should
be

a
follows

Other
than

4th
and
5th
No

4th

and
5th

Yes

Note
In

checking

continuity
oCthe

switch

keep
the

ignition
switch

OFF
Otherwise
the

circuit
tester

will

get

damaged

CLUTCH
PEDAL

HEIGHT

I

Adjust
clutch

pedal
height
H
to

the

specified
range
with

pedal
stopper

adjusting
nut
Then

tighten
lock
nut

CD

2

Adjust
clutch

pedal
free

play
A

to
the

specified
range
at

pedal

pad

with
clutch
master

cylinder
push
rod

Then

tighten
lock
nut

@

Note

a

Pedal
free

play

appeared
due
to

clearance

among
pedal
hole

push

rod
and

piston
should
be

measured

on

top
face
of

pedal
pad

b

Depress
and
release
clutch

pedal

over
its
entire
stroke
to
ensure
that

the
clutch

linkage

operates
smooth

ly
without

squeak
noise

inter

ference
and

binding

I

I

Lock
nut

2

Lock
nut

Cl325

Fig
CL
I

AdjlUting
Clutch

Pedal

Height

Pedal

height
H

143

to
149

mm
5

63
to
5
87
in

Pedal
free

play
An

1

to
5
mm

0
04

to
0

20
in
Clutch

ADJUSTMENT

tfl
Tightening
torque

Lock
nut

CD

0
8

to
1
2

kg
m

5
8
to
8
7

ft
Ib

Lock
nut

@

0
8
to
1

Icll
m

5
8
to
8
7
ft

lbl

CLUTCH
PEDAL

FREE
TRAVEL

Adjust
clutch

pedal
free
travel

whenever
clutch
does
not

disengage

properly
or
whenever
new

clutch

parts
are

i
lslalled

I
Loosen
lock

nut
and

push
nut

djust
length
of

push
rod

by
turning

p
lsh
rod
with

open
end
wrench

until

release

bearing
lightly
touches
clutch

dia

phragm

spring

2

Then
turn

push
rod
back

approxi

mately
I

4
turns
so
that
withdrawal

lever

play
B

clearance
between

withdrawal
lever

push
nut
and
with

drawal
lever

is
within
the

specified

range

V

@

1
B

I

Lock

nut

2
Push
nut

3

Withdrawallcver

CL327

Fig
CL

2

AdjlUting
Clutch

Pedal

Free

Trauel

3

Tighten
lock
nut

against
push

nut

being
careful
not
to
disturb
the

adjustment

4

Depress
and
release
clutch

pedal

several
times

then
recheck

with

drawal

lever

play
B

Readjust
if

necessary

5

Finally
measure

pedal
free
travel

C
at
center
of

pedal
pad

CL
2
Withdrawalle

er
play
nBn

clearance
between
withdrawal

I
er

push
nut
and
withdrawal

le
erl

1
0

to
2
0

mm

0

039
to

0
079
in

Clutch

pedal
free

tr
el
en

at
center
of

pedal
pad

16to33
mm

0
63
to
1
30
in

BLEEDING
CLUTCH

SYSTEM

The

hydraulic
clutch

system
must

be
bled
whenever

clutch
line
has
been

disconnected
or
air
has
entered
it

When

pedal
action
has
a

spongy

feeling
it
is
an
indication
that
air
has

entered
the

system

Bleeding
clutch

system
is

an
essen

tial

part
of

regular
clutch
service

I
Remove

cap
of
reservoir
and

top

up
with
recommended
brake
fluid

2

Thoroughly
clean
mud
and
dust

from
bleeder
screw
of

operating
cyl

inder

so
that
outlet
hole

is
free
from

any

foreign
material
Install
bleeder

hose

vinyl
hose
on
bleeder
screw

Place
the
other
end
of
it
in

a

container

filled
with
brake
fluid

3
Have

a
co
worker

depress
clutch

pedal
two
or

three
times

With
clutch

pedal
depressed
fully
loosen
bleeder

screw

to
bleed
air
out
of
clutch

sys

tem

4
Close
bleeder

screw
quickly
as

clutch

pedal
is
on
down
stroke

5
Allow
clutch

pedal
to
return

slowly
with
bleeder

screw
closed

6

Repeat
steps
3

through
5
until
no

air

bubble
shows
in

the

vinyl
hose

tfl

Tightening
torque

Bleeder
screw

0
7

to
0
9

kg
m

5
1

to
6
5
ft

lbl

7

Depress
and
release

clutch

pedal

several
times
then

check
for

external

hydraulic
leaks
at

connections

t

Prior
to

lWembly

dip
a
new

piston
cup
in
clean

brake
fluid
To

install

piston
cup
on

piston
pay
par

ticular
auention
to
its

direction

2

Dip
cylinder
and

piston
in

clean

brake

fluid
before

assembly

INSTALLATION

Install

operating
cylinder
in
the

reverse
order
of

removal
Observe

the

following

1

Bleed
air

thoroughly
from
clutch

hydraulic
system
Refer
to

Bleeding

Clutch

System
for

bleeding

2

Adjust
clutch

pedal
free
travel

Refer
to

Clutch
Pedal
Free

Travel
for

adjustment

Note

a

Use
new

gasket

b
When

operating
cylinder
is
removed

from
or

instaUed
on
clutch
haus

ing
without

disconnecting
clutch

hose
from

operating
cylinder
loos

en
bleeder

screw
so
that

push
rod

mo

lightly

c
E
xer

e

care
not
to

p
or
wist

clutch
hose
Be

sure
to
install

clutch
hose

away
from

exhaust

tube

d
When

tightening
flare

nut
hold

pipe
by
hand
to

prevent
it
from

twisting

CAUTION

When

connecting
dutch
tuhe

uSe

Flare

Nut

Torque
Wrench

G694310000

@
Tightening
torque

Bleeder

screw

0
7
to
0
9

kg
m

5
1
to
6
5
ft
Ihl
Clutch

o

cylinder
to
clutch

housing
securing
bolts

3
1
to
4
1

kg
m

22
to
30
ft
lbl

Clutch
hose
to

operating

cyli
nder

1
7
to
2
0

kg
m

12
to
14
ft

lbl

Flare
nut

1
5
to
1
8

kg
m

11
to
13
ft
Ibl

CLUTCH
LINE

INSPECTION

Check
clutch
lines
tube

and
hose

for
evidence
of
cracks
deterioration
or

other

damage

Replace
if

necessary

If

leakage
occurs
at
or

around

joints
retighten
and
if

necessary
re

place
damaged

parts

REMOVAL

CAUTION

When

disconnecting
clutch
tube

use

suitable
flare

nut
wrench

Never

use
an

open
end
wrench
or

adjustable
wrench

1

Qisconnect
clutch
tube
from

clutch

hose
at
bracket
on
side
mem

ber

2
emove
lock

spring
then
disen

gage
hose
from
bracket

3

Remove
clutch
hose
from

oper

ating
cylinder

4

Disconnect
clutch
tube
from
mas

ter

cylinder

5

Remove

clamp
fIxing
clutch
tube

to
dash

panel
and
side

member

CL
6
INSTALLAnOlll

Wipe
the

opening
ends
of

hydraulic

line

to
remove

any
foreign
matter

before

malting
connections

I
Connect
clutch
tuhe
to

master

cylinder
with
flare
nut

2
Fix
clutch
tube
to
dash

panel

and
side

member
with

clamp

3
Then

tighten
flare

nut

@

Tightening
torque

Flar
nut

1
5
to
1
8

kg
m

11
to

13
ft

Ibl

2
InstaU
clutch
hose
on

operating

cylinder
with
a

gasket
in

place

Note

Use
new

gaslcet

@
Tightening
torque

1
7
to
2
0

kg
m

12
to
14ft
lbl

3

Engage
opposite
end
of

hose
with

bracket
InstaU
lock

spring
fIxing
hose

to
bracket

Note

a
When

tightening
flare

nut
hold

pipe
by
hand
to

prevent
it
from

twisting

b
Exercise
care
not
to

warp
or
twist

clu1ch
hose

4

Connect
clutch
tube
to

hose
with

flare
nut
and

tighten
it

5
Check
distance

between
clutch

line
and

adjacent
parts

especially
be

tween
hose
and
exhaust
tube

6

Bleed
air
out
of

hydraulic
system

Refer
to

Bleeding
Clutch

System

for

bleeding

CAUTION

When

tightening
flare

nut
use

Flare

Nut
Wrench

G
G9431
0000

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

4
Bolt
converter
to

drive
plate

Note

Align
chalk
mark

painted
a

cro5S
both

parts
during
disas

sembling
p

S
After
converter
is

installed
rotat

r
nkshait
veral
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
m
mual
and
selector
levers
in

N

8

Connect
inhibitor
switch
wires
Automatic
Transmission

NOte

a
Refer

to

page
AT40
for

Checking

and

Adjusting
Inhibitor
Switch

b

Inspect
end

edjust
switch
as

abo

whe
ever
it
has

to
be
removed
for

servi
e

9

Check
inhibitor

switch
for

op

eration

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
n

and
Ru

positions

Back

up

lamp
should
Iso

light

when
selector
lever
is

placed
in
R

position

10
Check
level
of
oil
in

transm

sion
For
detailed

procedure
see

page

AT39

AT

26
II
Move

selector
leve

through
all

positions
to
be

sure
that
transmission

operates
correctly

With
hand

brake

applied
rotate

engine
at

idling
Without

disturbing

the
above

seUlng
move
selector

lever

through
N

to
D
to
2

to
I

and
to

R
A

slight
shock
should
be

reU

by

handgripping
selector

each

time
transmission

is
shifted

Note
See

page
AT40
for

Checking

Engine
Idling
Revolution

12
Check

to
be
sure
that

line

pres

sure
is

correct
To
do
this
refer
to

page
AT
43
for
Line
Pressure
Test

13

Perform
stan
test
as
described
in

page
AT41