DATSUN B110 1973 Service Service Manual

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

I

J

It

r

I

x

f

Fig
AT
54

Remouing
valve

body

tt

l

v

AT121

Fig
A
T
55

Loosening
band
en
a

Fig
AT
56

Removing
oil

pump

AT123

Fig
A
T
5
7

Removing
band
strut

Fig
A

T
SS

Removing
connecting
shell
CHASSIS

5
Remove

bolts
which
hold
valve

body
to
transmission
case
See

Figure

AT
54

6
Loosen
lock
nut

2
on

piston

stem

CI
as

shown
in

Figure
AT
55

Then

tighten
piston
stem
in
order
to

prevent
to
fall
front

clutch
drum
down

when
oil

pump
is
withdrawn

7

Pull
out

input
shaft

8
Withdraw
oil

pump
using
Sliding

Hammer

S125850000
Exercise
care

not
to
allow
front
clutch
to
come
out

of

position
and

drop
onto
floor
See

Figure
AT

56

9

Remove
band

strut
This
can
be

done

by

loosening
piston
stem
further

See

Figure
AT
57

10
Remove
brake
band
front

clutch
and
rear

clutch
as
an

assembled

unit

11

Remove

connecting
shelt
rear

clutch

hub
and

front

planetary
carrier

as

a
unit
See

Figure
AT
58

12

With
the

aid
of

Snap
Ring
Plier

HT69860000

pry

snap
ring
off

output

shaft

See

Figure
AT
59

13

Remove

connecting
drum
and

inner

gear
of
rear

planetary
carrier

as

an

assembly
See

Figure
AT
60

14

Remove

snap

rings
and

then

remove
rear

planetary
carrier
internal

gear
connecting
drum

one

way
clutch

outer

race
and
one

way
clutch
in

this

written

order

15
Remove

rear
extension

loosen

ing
securing
bolts

See

Figure
A
T
6I

16
Pull
out

output
shaft
remove
oil

distriburor

2
together
with

governor

valve
D
See

Figure
AT
62

17

Pry
off

snap
ring
using
a

pair
of

pliers
Remove

retaining

plate
drive

plate
driven

plate
and
dish

plate
in

this
written
order
See

Figure
AT

63

AT
38
Fig
AT
61

Removing
rear

extension

I
AT128

Fig
A
T
62

Removing
governor
and

oil
distributor

AT129

Fig
A

T
63

Removing
drive
and

driven
plates

18

Reaching
through
back
side
of

transmission

case
remove
hex
head

slotted
bolts
as
shown

in

Figure

AT
64
To

do
this
use
Hex

head
Ex

tension

ST25570000
One

way
clutch

inner
race
thrust

washer

piston
return

spring
and
thrust

spring
ring
can
now

be

removed

19
Blowout

low
and
reverse
brake

piston
by
directing
a

jet
of
air
into

hole
in

cylinder
See

Figure
A
T

65

20
Remove
band

servo

loosening

attaching
bolts

Note
If

difficulty
is
encountered
in

removIng
retainer

direct
a

jet

of
air

toward
release
side
as

shown
in

Figure
AT
66

ST25570000

Fig
A
T

64

Removing
hex
head
lotted

bolt

Fig
A
T
65

Removing
pi
ton

r

AT132

Fig
A

T

66

Removing
band
seroo
AUTOMATIC
TRANSMISSION

21

Pry
snap
rings
CD
from
both

ends
of

parking
brake
lever

@
and

remove
the

lever
Loosen
off
manual

shaft
lock

nut

CID
and
remove
manual

plate
@
and

parking
rod

@
See

Figure
AT
67

Qd

i
f

W
II

4

i

n
n

r
1

K
j

e
0

H
o

i

j
j

I
j

l

m
r
JlII

2

U
r

K
F

J

r

0

f
1

r

AT133

Fig
A
T
67

Removing
manual

plate

22
Remove

inhibitor
switch
and

manual
shaft

loosening
two

securing

bolts

Inspection

Torque
converter

housing

transmission
case
and
rear

extension

1
Check
for

damage
or

cracking
if

necessary
replace

2
Check
for
dent
or
score
mark
on

their

mating
surfaces

Repair
as

neees

sary

3

Check
for
score
mark
or

sign
of

burning
on
extension

bushing
if

neces

sary

replace

Gaskets
and
O

ring

1

Always
use
new

gaskets
when
the

units
are

to
be

disassembled

2

Check
O

rings
for
burrs
or

cracking
If

necessary
replace
with

new

rings

Oil
distributor

I

Check
for

sign
of
wear
on

seal

ring
and

ring
groove
replacing
with

new

ones
if

found
worn

too

badly

beyond
use

2
Test
if

clearance
between
seal

ring

and

ring
groove
is

correct
If
out
of

specifications

replace
whichever
worn

excessively
beyond
limits
Correct

clearance
is
from
0
04
to
0

16

mm

0
0016
to
0
0063
in
See

Figure

AT

68

AT
39
Clearance

Seal

ring

F
1
I

i
h

AT134

Fig
A
T

68

Measuring
seal

ring
to

ring
groove
clearance

Assembly

Assembly
is
reverse
order
of
dis

assembly
However
observe
the

following
assembly
notes

1
After

installing

piston
of
low
and

reverse
brake
assemble
thrust

spring

ring
return

spring
thrust
washer

and

one

way
clutch
inner

race

Torque

hex
head

slotted
bolt

to
1
3

to
1
8

kg
m
94
to
13
ft
Ib

using
Hex
head

Extension

ST25570000

Torque

Wrench

GG930
1

0000
and
Socket
Ex

tension
ST25512001
See

Figure

AT
69
i

ST25570000

ST255
1

2001

GG93010000
0

rr

l

f

r

Fig
A
T
69

Installing
one

way
clutch

inner
race

2
After

low
and

reverse
brake
has

been
assemble

measure
the
clearance

between

snap

r
ng
cD
and

retaininig

plate
@
Select

proper
thickness
of

retaining
plate
that

will

gi
ve
correct

ring
to

plate
clearance

See

Figure

AT
70

Low
and

reverse
brake

clearance
0
8
to
1

05
mm

0
031
to

0
041
in

Fig
AT

70

Measuring
ring
to

plate

clearanc

Available

retaining
plate

No

Thickness
mm
in

I

15
8
0

622

2
16
0

0
630

3
16
2
0

638

4
16
4
0
646

5
16
6
0

654

6
16
8

0

661

As

to

inspection

procedure
for
low

and
reverse
brake
see

page
AT
43

3

Install
one

way
clutch

so
that
the

arrow

mark
is

toward
front

of

vehicle
It

should
be

free
to

rotate

only
in

clockwise
direction
See

Figure

AT71

AT131

Fig
AT
71
One

way
clutch

4

After

installing
rear

extension

torque
attaching
bolts
to
2

0
to
2
5

kg
m
14
to

18
ft
lb
Place
manual

lever
in
P

range
and
check
to

be
sure

that

rear

output
shaft
is

securely

blocked

5

Tighten
servo
retainer

temporari

Iy
at

this

stage
of

assembly
CHASSIS

6
Place
rear

clutch

assembly
with

needle

bearing
on
front

assembly

7

Install
rear

clutch
hub
and

front

planetary
carrier
in
the
manner
as

shown
in

Figure
AT
72

AT142

Fig
AT

72

Installing
planetary
carrier

8

Assemble

connecting
shell

and

other

parts

up
to
front
clutch
in

reve
e
order
of

disassembly

ATl43

Fig
AT
73
In

talling
connecting
hell

9

Adjust
total
end

play
and
front

end

playas
follows

L

@
8

S

I
fT

15

l

r

1
Front
clutch

thrust

washer

2
Oil

pump

3
Front
clutch

4

Rear
du
tch
S
Transmission
case

6
Oil

pump

gasket

7

Oil

pump
cover

bearing
race

Fig
AT
74

Endplay

AT
40
I
Measure
the
distance
A

and

e

by
vernier

calipers
as
shown
in

Figure
AT
75

fl
l

I
Transmission
case

1l

Lf
ar
n
h

AT139

Fig
AT
75

Measuring
the
diltance

A
and

C

2
Measure
the
distance

B

and

D

of
oil

pump
COVer
as
shown
in

Figure
AT
76

B

AT140

Fig
AT
76

MeaJIuring
the
diltanc

B
and
D

Adjustment
of
total

end

play

Select
oil

pump
cover

bearing
race

by

calculating
the

following
formula

TT
A
B
W

where

TT
Required
thickness
of
oil

pump

cover
bearing
race
mm
in

A

Measured
distance
A

mm
in

B
Measured
distance
B
mm
in

W

Thickness
of

bearing
race
tem

porarily
inserted
mm

in

Available
oil

pump
cover

bearing
race

No
Thickness

mm
in

I
1
2

0
04
7

2
I

4
0
055

3
1

6
0
063

4
1

8
0
071

5

2
0
0
079

6
2
2

0
087

Specified
total
end

play

0

25
to

0
50
mm

0
009
to
0

020
in

Adjustment
of
front
end

play

Select
front
clutch
thrust
washer

by

calculating
the

following
formula

TF
C
D
0
2
mm

where

T

F
Required
thickness
of
front

clutch
thrust

washer
mm

in

C
Measured
distance
C
mm
in

D
Measured
distance
D

mm
in

Available
front
clutch
thrust
washer

No
Thickness

mm
in

I
J
5
0
059

2
1
7
0
067

3
1
9

0
075

4
2
1

0
083

5
2
3

0
091

6
2
5
0
098

7
2
7
0

106

Specified
front
end

play

0
5

to
0
8
mm

0
020
to
0
031
in

Notes
a
Correct

thickness
of

bearing

race
and
thrust
washer
is
al

ways
the
one
which
is
nearest

the
calculated

one

b
Installed
thickness
of

oil

pump
gasket
is

0
4
mm
0
016

in

10

Check
to
be

sure
that

brake

servo

piston
moves

freely
For
detailed

procedure
refer
to

covering

topic
on

page
AT
43

Use

care
to

prevent
piston

from

coming
out
of

place

during
test

ing
since

servo
retainer

is
not

tightened

at
this

point
of

assembly

II

Make
sure
that
brake
band

strut

is

correctly
installed

Torque
piston

stem
to
1
2

to
1
5

kg
m
8
7

to
II

ft
lb
Back
off
two
full

turns
and

secure

with
lock
nut
Lock
nut

tight

ening

torque
is
1
5

to
4

0

kg
m

I
I
to

29
ft

Ib
AUTOMATIC
TRANSMISSION

I
2

After
inhibitor
switch
is
in

stalled
check
to
be
sure
that
it

op

erates

properly
in
each

range
For

detailed

procedure
refer
to

covering

topic
on

page
AT
51

13

Check
the

length
L
between

case
end

to
rod
end

of
vacuum

throttle

valve

fully
pushed
in

Then
select

adequate
diaphragm
rod

corresponding

measured

length
See

Figure
AT
77
m
rj

I

L

1

AT145

i

Fig
AT
77

Measuring
the
distance

L

Available

diaphragm
rod

Distance
measured

L
mm

in

Under
25
55

1
006

25
65

to
26
05
1

010
to
1

026

26
15
to
26
55
1

030
to
1

045

26
65
to
27
05
1

049
to
1
065

Over
27
15
1

069

COMPONENT
PARTS

The

transmission
consists
of

many

small

parts
that
are

quite
alike
in

construction

yet
machined
to

very

close
tolerances
When

disassembling

parts
be
sure
to

place
them
in

order
in

a

part
rack
so

they
can
be
restored
in

the
unit
in
their

proper
positions
It
is

also

very
important
to

perform
func

tional
test
whenever
it
is

designated

Front

clutch

Disassembly

Front

clutch

drum

Piston

1

AT146

1
Snap
ring
S
Dished

plate

2
Retaining
plate
6

Snap
ring

3
Drive
plate
7

Spring
retainer

4

Driven

plate
8
Coil

spring

Fig
AT
78
S
ctional
v
w

of

front
clutch

AT
41
Diaphragm
rod

length
mm
in

29
0

1
142

29
5
1
161

30
0
1
181

30
5
1
2
1I

31
0
1
220

I

Pry
off

snap

ring
D
with
a

suitable
screwdriver
or
a

pair
of

pliers

Remove
a

retaining
plate
@
drive

plate
@
driven

plate
@and
dish

plate

@
in
the
order

listed
as
shown
in

Figure
AT
78

2

Compress
clutch

springs
using

Clutch

Spring
Compressor

ST25420000
or
ST2542001
Re

move

snap
ring
@
from

spring
re

tainer

using
Snap
Ring
Remover

ST25320001
See

Figure
AT
79

Note

When
Clutch

Spring
Compres

sor
STIS420000
is

to
be
used

cut
the
toe

tips
of

threeloigs
by

a

grinding
wheel
See

Figure

AT
80

AT
1

Fig
AT
79
RemoL

ing
snap
ring

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

Assembly

I

Prior
10

assemlbing
dip
all

parts

in

clean
automatic

transmission
fluid

Reverse

disassembly
procedure
to

assemble
brake

2
Use
extreme
care
to

avoid

dam

aging
rubber

ring
when

installing
seal

lace

3
Blow

under

pressure
air
from

apply
side
of

piston
to
lislen
for
defi

nite

piston

operation
as

shown
in

Figure
AT

93

4

With

appIy
side
of

piston
plugged

with

thumb
blow
air
under

pressure

into

cylinder
from
release

side
as

shown
in

Figure
AT
94
If
retainer

is

raised
a
little
it
is

an
indication
that

attaching
bolts

are
loosened

calling

for

retightening

Governor

Disassembly

l

Separate

governor
from

oil
dis

tributor

by

unscrewing

attaching
bolts

2
To

disassemble

secondary
gover

nor

remove

spring
seat

spring
and

secondary
governor
valve
from
valve

body
in

this

written
order
as
shown
in

Figure
AT
95

3

If

primary

governor
is

to
be
dis

assembled
for

any
purpose
remove

spring
seat

primary
governor
valve

spring
and

spring
eal
CHASSIS

I
Anchor
end

pin

2
Band

strut

3

Return

spring

4

Piston
stem

5
Band

servo

piston

6
Release

7

Apply

8

Servo

piston

relainer

9

Transmission
case

10

Band
brake

AT074

Fig
A
T
92
Sectional
view

of
servo

piston

Fig
A
T
93

Testing
piston

Apply
side

Fig
A
T
94

Testing
pi8ton

Rele
side

Inspection

I

Check
valve
for

defective
condi

tion

Replace
spring
if

found

weaken

ed
too

badly
beyond
use
Defective

piston
should

also
be

replaced
with

a

new
one

2
Examine
if

primary

governor

slides

freely
without

binding

3

To
determine

if

secondary
gover

nor
is
in

good
condition
blow

air

under

light
pressure
into
hole
at

A

to

listen
for
noise

like
a

model

plane

AT
44
r
To
control

valve

Governor

pressure

15

1

4

From
control

valve

Line

pressure
I

I

Primary

governor

2

Secondary
governor

3

Governor
valve

body
A
TogO

4
Oil

distributor

5

Output
shaft

Fig
A
T
95

Testing
secondary

governor

Assembly

Reverse

disassembly
procedure
to

assemble

governor

Note
Do
nol

confuse

primary
gover

nor

wilh

secondary
governor

After

instaDation
check
to
be

sure
that

spring
is
nol

de

flecled

Oil

pump

Disassembly

I

Free

pump
cover
from

pump

housing
by

removing
attaching
bolts

2
Take
out
inner
and

outer

gears

from

pump

houisng

Inspection

1

Inspect
gears
for
wear
or

damage

to

gear
leeth

Replace
rubber

ring
if

found

damaged
excessively

beyond

use

2

Using
a

straight
edge
and
feelers

measure

pump
and

gear
clearances
as

follows

Clearance
between
inner

or
outer

gear
and

pump
cover
See

Figure

AT
96

Standard
clearance

0
02

to
0
04
mm

0

0008
to
0
0016
in

Replace
if

going
over
0

08
mm

0
0031
in

Clearance

between
seal

ring
and

ring

groove
See

Figure
AT

97

Standard

clearance

0

04toO
16mm

0

0016

to
0

0063
in

AT162

Fig
A

T
96

Measuring
clearance

I
earance

I
Seal

rIng

0d

t
AT185

II

Fig
AT
97

Measuring
clearance

Assembly

1
Set

up
pump

housing
and
inner

and
outer

pump
gears
on
it

2

With
the
aid

of
Oil

Pump
Assem

bling

Gauge
ST255800oo
install

pump
cover
to

pump
housing
as
shown

in

Figure
AT

98

lnnrr
i

rnl

l

AT166

Fig
A
T
98

Centering
oil

pump

3

Temporarily
tighten

pump
secur

ing
bolts

4

Set
the
runout

of
oil

pump
cover

within
0

07
mm

0
0028
in

total

indicator

reading
See

Figure
A
T

99
AUTOMATIC
TRANSMISSION

AT264

Fig
A
T
99

Measuring
run

out

5

Tighten
pump
securing
bolts
to

specified
torque
0
6
to
0
8

kg
m
4
3

to
5
8
ft

Ib

Note
Be
sure

to

align
converter

housing
securing
bolt
holes

6

Again
check
the
runout
of
oil

pump
cover

Note

When
former
Oil

Pump
As

sembling
Gauge
is
to
be
used

make
a
screw
hole
in

side
of
it

Planetary
carrier

The

planetary
carrier
cannot
be

divided
into
its

individual

components

If

any
part
or

component
is
defec

tive

replace
the
carrier
as
a
unit

Inpsection

Check
with
a
feeler
clearance
be

tween

pinion
washer
and

planetary

carrier

See

Figure
AT
100

Standard
clearance

0
20
to
0
70

mm

0
008
to
0

028
in

Clearance

I

LJ
b

II
I

AT161

Fig
AT
100
Mea

uring
pinion
washer

to

carrier
clearance

AT
45
Replace
if

going
over
0
80
mm

0
031

in

Control
valve

The
control
valve

assembly
consists

of

many
precision
parts
and

requires

extreme

care
when
it

has
to
be
re

moved
and

serviced
It
is

good
practice

to

place
parts
in
a

part
rack

so
that

they
can

be
restored
in

valve

body
in

their

proper
positions
Added
care

should
also
be
exercised
to

prevent

springs
and
other

small

parts
from

being
scattered
and
lost

Before

assembly

dip
all

parts
in

clean
automatic
transmission
nuid
and

check
to
be
certain

that

they
are
free

of
lint

and
other
minute

particles
If

clutch
or

band
is
burnt

or
if

oil

becomes
fouled
the

control
valve
as

sembly
should
be

disassembled
and

flushed

Disassembly

1
Remove

bolts
and
nuts
which

retain
oil
strainer
Bolts

may
be

re

moved
with
a
screwdriver
but
it
is

recommended
to
use

Hexagon
Wrench

HT61000800
and

Spinner
Handle

HT62350000

See

Figure
AT
10
I

2
Remove

attaching
bolts
With

bolts
removed

lower
valve

body

separate
plate
and

upper
valve

body

are
free
for
removal

See

Figure

AT
102

Note
Do

not
allow
orifice

check

valve
and
valve

spring
in
lower

valve

body
from

being
scattered

and
lost

when

removing
sepa

rate

plate

HT61000BOO

HT62350000

Fig
AT
101

Removing
valve

body

I

Fig
AT
102

Removing
5

parote
plate

3

Pull
out
manual
valve
as
shown
in

Figure
AT
103

4
Remove

side

plate
Take
out

1st
2nd

shift
valve
2nd

3rd
shift

valve

pressure
modifier
valve
and

three
valve

springs
See

Figure
AT
I04
CHASSIS

AT170

Fig
AT

103

Removing
manual
valve

Note
Do

not
work
it
off

with
screw

drivers
to
avoid

damaging

machine
screws

5

Remove
side

plate
pull
out

pres

sure

regulator
valve
second

lock
valve

pressure

regulator
plug
and

two

valve

springs

sp
m

Pressure
regutlltor
sleeve
C
Prt
ssure

P
elato

piug

IZt

1
2iid3
d

h

1

alve
7

I

Solenoid
down
skutt

Throttle

back

up
alw

p
u
modif
Second
lock
alve

MllllU81

1st
2nd
shift

2nd
3rd
shift

Inspection

I

Check
valves
for

sign
of

burning

and
if

necessary
replace

2

Check
to

be
certain
that

oil

strainer
is

in

good
condition
If
found

damaged
in

any
ffi3nner

discard

3
Test
valve

springs
for

weakened
egulator
alve

3

1

ott

jj
r

of
U
d

4
t
i
i

J
j

r

r

lC

i
i
4

i

I
5
j
AT171

Fig
A
T
l

04

Removing
8ide

plate

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

2nd

3rd

timing
3
ve

i

Vacuum
Ihrotlle
alve

aive

Fig
AT
L05

Components

parts
of
control
value

tension

if

necessary
replace

4
Examine

if
there
is

any
sign
of

damage
or

score
marks
on

separate

plate
If

left
unheeded
oil

will

bypass

correct
oil

passages
causing
many

types
of
abnormalities
in

the

system

AT
46
5

Check
oil

passages
in

valve

body

for

sign
of

damage
and

other
condi

tions

which

might
interfere
with

prop

er
valve

operation

6

Check
bolts
for

stripped
threads

Replace
as

required