1977 DATSUN PICK-UP check oil

Automatic

Transmission

MAJOR

REPAIR

OPERATION

SERVICE
NOTICE
FOR

DISASSEMBLY

AND

ASSEMBLY

TORQUE
CONVERTER

INSPECTION

TRANSMISSION

DISASSEMBL
Y

INSPECTION

ASSEMBL
Y

SERVICE
NOTICE

FOR
DISASSEMBLY

AND
ASSEMBLY

I
It

is
advisable

that

repair
opera

tions
be

carried
out
in
a

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

They

do
however
have

common

adjust

ment

and

repair

procedures
as
well
as

cleaning
and

inspection

procedures

outlined
hereinafter

3

During
repair
operations
refer
to

Service
Data

and

Specifications
see

tion
for

the
correct

parts
for
each

model

4

Before

removing
any
of

subas

semblies

thoroughly
clean
the
outside

of
the

transmission
to

prevent
dirt

from

entering
the
mechanical

parts

5

Do
not
use
a
waste

rag
Use
a

nylon
or

paper
cloth

6
After

disassembling
wash
all
dis

assembled

parts
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

As
a
rule

packings
seals
and

similar

parts
once
disassembled
should

be

replaced
with
new
ones

TORQUE

CONVERTER

The

torque
converter
is

a
welded

construction
and

can
not
be
disas

sembled
CONTENTS

AT

36

AT

36

AT

36

AT

36

AT

36

AT
38

AT

38
COMPONENT
PARTS

FRONT

CLUTCH

REAR

CLUTCH

LOW
REVERSE
BRAKE

SERVO

PISTON

GOVERNOR

OIL

PUMP

PLANETARY

CARRIER

CONTROL

VALVE
AT

40

AT
40

AT
41

AT
42

AT
42

AT
43

AT
43

AT
44

AT

44

INSPECTION
2

Remove
bolts

securing
converter

1

Check

torque
convertf

for

any
housing
to
transmission

case
Remove

sign
of

damage

bending
oil
leak

or
torque
converter

deformation

If

necessary
replace
3
Remove

speedometer
pinion

2

Remove
rust
from

pilots
and
sleeve

bolt
Withdraw

pinion

bosses

completely
4

Remove
downshift
solenoid
and

If

torque
converter
oil
is

fouled

or
vacuum

diaphragm
Do

not
leave
dia

contaminated
due
to
burnt
clutch

phragm
rod
at
this

stage
of
disas

flush
the

torque
converter
as
follows
sembly
Rod
is

assembled
in

top
of

vacuum

diaphragm
See

Figure

I
Drain
oil
in

torque
converter

AT

53

2
Pour

non
lead

gasoline
or

kero

sene
into

torque
converter

approxi

mately
0
5
liter

I
U
S

pt
U

Imp

pt

3

Blow
air

into

torque
converter

and

flush
and
drain

out

gasoline

4
Fill

torque
converter
with

torque
converter
oil

approximately

0
5
liter
I

V
S

pt
U

Imp
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
ST07870000

or
ST07860000
Remove

oil

pan
See

Figure
AT
52

AT118

Fig
AT

52

Removing
oil

pan

AT

36
Fig
AT
53
Down

hilt
olenoid
and

vacuum

dilJphragm

5

Remove

bolts
which

hold
valve

body
to
transmission

case
See

Figure

AT
54

Fig
AT
54

Removing
valve

body

6
Loosen
lock
nut

@
on

piston

stem

D
as
shown
in

Figure
AT

55

Then

tighten

piston
stem
in

order
to

prevent
front
clutch

drum
from

falling

when
oil

pump
is
withdrawn

Fig
AT
70

Measuring
ring
to

plate

clearance

Available

retaining
plate

Thickness
mm
in

1l
8
0
465

12
0

0472

12
2
0480

124

0488

12

6
0496

12

8
0
504

For

inspection
procedure
for

low

and

reverse
brake
see

page
AT
42
for

Assembly

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

AT
71

mITIJ

o

oml

AT137

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

ly
at
this

stage
of

assembly

6
Place

rear
clutch

assembly
with

needle

bearing
on
front
assembly
Automatic
Transmission

7

Install
rear
clutch
hub
and
front

planetary
carrier
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

reverse
order
of

disassembly

AT143

Fig
AT
73
Installing
connecting
shell

9

Adjust
total
end

play
and

front

end

playas
follows

Front
end

play

L

r

L

CD
I

r

L

11
I
J

Total
end

play
@

Front
clutch

thrust
washer

2

Oil

pump
cover

3
Front
clutch

4

Rear
clutch
AT138

5

Trammission
case

6
Oil
pump

gasket

7
Oil

pump
cover

bearing
race

Fig
AT
74
End

play

1
Measure
the
distance
A

and

C

by
vernier

calipers
as
shown

in

Figure
AT
75

AT
39
i
Rear

c

clutch

N
edle
bearing

Bearing
race

I

Fig
AT
75
AT139

Measuring
the
distance

A

and
C

2

Measure
the
distance
B

and

D
of

oil

pump
cover
as
shown
in

Figure
AT
76

I

L

I
Oiipi
mp

AT140

Fig
AT
76

Measuring
the
distance

B
and
D

Adjustment
of

total
end

play

Select
oil

pump
cover

bearing
race

by

calculating
the

following
formula

TT
A
B
W

where

T

T
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

temporarily
inserted
mm
in

Available
oil

pump
cover

bearing

race

Thickness
mm

in

1
2
0
047

I
4
0
055

1
6
0
063

1
8
0
071

2

0
0
079

2
2
0
087

Specified
total
end

play

0
25100
50
mm

0
0098
to
0
0197
in

Adjustment
of
front
end

play

Sele
t
front
dutch
thrust
washer

by

calculating
the

following
formula

T

F
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

Thickness
mm
in

1
5
0
059

I
7
0
067

1
9
0
075

2
1
0
083

2
3
0
091

2
5
0
098

27
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
always
the
one

which
is
nearest
the
calculated
one

b
Installed
thickness
of
oil

pump
gas

ket
is
0
4

mm
0
016
in

10
Check
to
be
sure
that
brake

servo

piston
moves
freely
For
detailed

ptocedure
refer
to

page
AT
42
for

Servo
Piston
Use
care
to

prevent

piston
from

coming
out
of

place
dUI

ing
testing
since
servo
retainer
is
not

tightened
at
this

point
of

assembly

II
Make
sure
that
brake
band
strut

is

correctly
installcd

Torque
piston

stem
to
1
2
to
1
5

kg
m
9
to
11

f1
lb
Back
off
two
full
lurns
and

secure
with
lock
nut
Lock
nut

tight

ening
torque
is
1
5
to
4

0

kg
m

II
to

9

f1
lb
Automatic
Transmission

12
After
inhibitor
switch
is
in

stalled
check
to
be
sure
that
it

op

erates

properly
in

each
range
For

detailed

procedure
refer
to

page
AT

49
for
Checl
ing
and

Adjusting
Inhibi

tor
Switch

13
Check
the

length
L
between

case
end
to
rod
end
ofvacuum
throllle

valve
fully

pushed
in
Then
select

adequate
diaphragm
rod
of
corre

sponding
measured
length
See
Figure

AT
77

Available

diaphragm
rod

Distanl
e

measured
L
ITIm
in

Under25
55

l
OO59

25
65

to
26
05
1

0098
to
1
0256

26
15
to
26
55
1

0295
to
1

0453

26

65
to
27
05
1
0492
to
1

0650

Over
27
15
1
0689

COMPONENT
PARTS

The
transmission
cons
sts
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

part
rack
so

they
can

be
restored
in

the

unit
in
their

proper
positions
It
is

also

very
important
to

perform
func

tianal
test
whenever
it
is

designated

FRONT
CLUTCH

Disassembly

Front

clutch
drum

I

Pinon

lcz

t

AT146

1

Snap
ring

2

Retaining
plate

3
Drive

plate

4

Driven

plate

Fit
AT
78
S
Dished

plate

6

Snap

ring

7

Spring
retainer

8
Coil

spring

Sectional
view

of

front
clu
tch

AT
40
i

i
n
H

I
I

ni
c
A
i

iif

L

1

AT145

Fig
AT
77

Measuring
the
distance

L

Diaphragm
rod

length
mm
in

29
00
142
u

29

5
1161

30
0
1
81

30
5
1201

31
0
I
O

I

Pry
off

snap
ring
D
with

a

suitable
screwdriver
or

a

pair
of

pliers

Remove
a

retaining
plate
@
drive

plate
CID
driven

plate
@
and
dished

plate
@
in

the
order
listed
as
shown

in

Figure
AT
78

I

2

Compress
clutch

springs
using

Clutch

Spring
Compressor

ST25420001
or

51
25420000
Re

move

snap
ring
@
from

spring
re

tainer

using
Snap
Ring
Remover

ST2532000
I

See

Figure
AT
79

AT147

Fig
AT
79

Removing
snap
ring

Note
When
Clutch

Spring
Compres

sor
ST25420000
is
to
be
used
cut

the

toe

tips
of
three

legs
by
a

grinding
wheel
See

Figure
AT
80

Automatic

Transmission

L
1
r

E
5

Eo

1

20

mm
l

AT148

3

0
079
in

Cut
off
hatched

portion

Fig
AT

SO

Modifying
coil

spring

compres
or

3
Take
out

spring
retainer

f
and

spring
@
See

Figure
AT
78

4

Blowout

piston
by
directing
a

jet

of
air
inlO
hole
in

clutch
drum
See

Figure
A
T
8l

AT149

Fig
AT
81

Blowing
out

piston

Inspection

I

Check
for

signs
of
wear

or
dam

age
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
in

reverse
the
order

of

disassembly

Dip
all

parts
in

clean

automatic

transmission
fluid
before

installing

2
Line

up
driven

plates
so
that

stripped
arcs
are

properly
aligned

paying
particular
attention
to
the
loca

tion
of

oil
holes
in
clutch
drum
See

Figure
AT

82

Note
The
number
of
drive
and
driven

plates
varies
with
the

type
of
vehi

cle
For
detailed
information

see

Service
Data

Specifications
AT150

Lub

ication
hole

Fig
AT

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
83

Specified
clearance

I
6
to
1
8

mm

0
063
to
0

071
in

Available

retaining

plate

Thickness
mm
in

10
6
0417

10
8
0425

11

0
0
433

11
2
0441

II
4

0
449

11
6

0457

AT151

Fig
AT
83

Measuring
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
84

AT
41
Fig
AT

B4

Testing
front
clutch

REAR
CLUTCH

Disassembly

AT153

1
Rear

clutch
drum

2
Front

clutch

piston

3

Snap
ring

4

Retaining

plate

5
Drive

plate

Fig
A
T
85
Sectional

view

of

rear
clu
tch
6

Driven

plate

7

Dished

plate

8

Spring
retainer

9

Coil

spring

I

Take
out

snap
ring

@
retaining

plate

@
drive

plate

@
driven

plate

@
and

dished

plate

f
Same
tech

nique
can
be

applied
as
in

disas

sembling
front

clutch
See

Figure

AT
85

2
Remove

snap
ring
from

coil

spring
retainer
See

Figure
AT
86

ST2532001

Xf

Fig
AT
86

Remolling
snap
ring

3
Blowout

piston
by
directing
a

jet

of

air
into

hole
in

clutch
drum
See

Figure
AT

87

AT155
V

i

J
i

j

Fig
AT
87

Blowing
out

piston
Automatic
Transmission

1

w

Ai

I

i
1

i

3
j

P2

0

AT157

Fig
A
T
89

Testing
rear
C
U
tch

Inspectl

ioW
S
REVERSE
BRAKE

Refer
to

page
AT41
for

Inspection

of
Front
Clutch

Assembly

Assemble
in

reverse
the
order
of

disassembly
Dip
all

parts
in
clean

automatic
transmission
fluid
before

assembling
Note

that
the
number
of

drive
and
driven

plates
varies
with

type

of
vehicle
F
or
details
refer
to
Serv

ice
Data

Specifications

I

After
rear
clutch
is
assembled

check
to
be
sure
that
clearance
be

tween

snap
ring
D
and

retaining

plate

l
is
held
within

prescribed
toler

ances
See

Figure
AT
88

Specified
clearance

1

0
to
1
5
rom

0
039
to
0
059
in

AT156

Fig
AT
SS

Measuring
ring
to

plate

clearance

2

Testing
rear
clutch

Install
rear
clutch

on
oil

pump

cover

Blow

compressed
air

into
oil
hole

to
test
for
defInite

clutch

operation
as

shown
in

Figure
AT
89
Disassembly

1
Fllow

steps
as
described
in

page

AT

36
for
Transmission

Disassembly

2
mow
out

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

tolerances

2
Test

piston
return

spring
for

weakness
Discard
if
weakened

beyond

use

3

Replace
faulty

parts
with
new

ones

Assembly

I

After
low
reverse

piston
is

installed
assemble
thrust

spring
ring

retum

spring
thrust
washer
and

one

way
clutch
inner

race

Using

Hex
head
Extension

ST25570001

ST25570000

torque
hex
head
slot

ted
bolt
I
3
to
1

8

kg
m
9
to
13

ft
lb

2
Insert
dished

plate
driven

plate

drive

plate
and

retaining

plate
into

transmission
case
in

that
order
Install

sn

p
ring
to
secure
the
installation

Note

The
number
of
drive
and
driven

plates
wries
with

type
of
vehicle

For
detailed
information

refer
to

Service
Data

Specifications

AT42
3

Without

disturbiilg
the
above

setting
check

to
be

sure
that

clearance

between

snap
ring
and

retaining
plate

is

within

specified
limits
If

necessary

use
other

plates
of
different
thickness

until
correct

clearance
is

obtained

Specified
clearance

0
80
to
1

05
rom

0
0315
to
0

0413
in

4

Blow

compressed
air
into

oil
hole

in

low
reverse
brake
to
test
for

definite
brake

operation
as
shown
in

Figure
AT

90

Fig
AT
90

Testing
low

reverse

brake

SERVO
PISTON

Disassembly

I
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

other
faults
which

might
interfere
with

proper
brake

operation

v

r
0

111

Ll
7

J

I

AT159

Fig
AT
91

Removing
pi3ton

Automatic
Transmission

i

r

11

I

@
@
j

A

T290

Assembly

I
Prior
to
assembly
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

compressed
air

from

apply

side
of

piston
to
test

for
definite

piston
operation
as
shown
in

Figure

AT
93

7
i
8

ror
1

1
r

c

f

f
A

J

II
1

0

c
r

1

1
I

@

L
O
j

0
n

iJ

fl
IV
I

AT160

Fig
AT
93

Testing
piston

Apply
side

4
With

apply
side
of

piston
plugged

with
thumb
blow

compressed
air
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
loose

calling
for

retightening
1
Anchor
end

pin

2
Band

strut

3

Apply

4
Release

5
Return

spring

6
Band
servo

piston
stem

7

Band
servo

piston

8
Servo
retainer

9
Brake
band
assembly

10

Transmission
case

Fig
AT
92
Sectional
view

ofseruo
piston

7
o

i
J

1S

I

z
1
Y

i
1

t
9
c
fa

AT161

Fig
AT
94

Testing
piston

Release
side

GOVERNOR

Disassembly

I

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
that
order

as
shown
in

Figure

AT

95

To
control

val

i
1

3

5MI
n

ID
r

Ii

I

4

From
control
valve

Line

pre
sure

I

I
A
TOgO

4
Oil

distributor

5

Output
shaft
I

Primary
governor

2

Secondary
governor

3
Governor
valve

body

Fig
AT
95

Testing
secondary

govemor

AT
43
3

If

primary
governor
is
to
be

dis

assembled
for

any
purpose
remove

spring
seat

primary
governor
valve

spring
and

spring
seat

Inspection

I
Check
valve
for

faulty
condition

Replace
spring
if
found
weakened

beyond
use
Faulty

piston
should
also

be

replaced
with
a
new
one

2
Examine
to
see
if

primary
gover

nor
slides

freely
without

binding

3
To
determine
if

secondary
gaver

nor
is
in

good
condition
blow
air

under

light

pressure
into
hole
at
A

and
listen
for
noise
like
that
of
a

model

plane

Assembly

Reverse
disassembly

procedure
to

assemble

governor

Note
Do

not
confuse

primary
gover

nor
with

secondary
governor
After

installation
check
that

spring
is
not

deflected

OIL
PUMP

Disassembly

I
Free

pump
cover
from

pump

housing
by
removing
attaching
bolts

2
Take

out
inner
and
outer

gears

from

pump
housing

Inspection

I

Inspect
for
wear
or

damage
to

gear
teeth

Replace
rubber

ring
if

found

damaged
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
0008100
0016
in

Replace
if
over
0
08
mm
0
00
11

in

Fig
AT

96

Measuring
clearanc
Automatic
Transmission

6

u

ST255801JOO

AT264

Fig
AT

99

Measuring
runout

5

Tighten
pump
securing
bolts
to

specified

torque
0
6
to
0
8

kg
m
4

to
6
ft
Ib
Clearance

between
seal

ring
and

ring

groove
See

Figure
AT

97

Standarddearance
Note
Be
sure
to

a1ign
converter

0
04
io
0
16
mm
housing
securing
bolt

holes

0
0016
to
0
0063
in

6

Again
check
the

runout

of
oil

pump
cover

I
learance

Seal

ring

q

I

n
l

1
AT

5

Fig
AT
97

Measuring
clearance

Assembly

I

Set

up

pump
housing
with
inner

and
outer

pump
gears
on
it

2

Using
Oil

Pump

Assembling

Gauge
ST25580000

instail

pump

coverta

pump
housing
as
shown

in

Figure
A

T

98

ST

5

000

J
I

I

JL

AT166

Fig
AT
98

Centering
oil

pump

3

Temporarily
lighten

pump
secur

ing
bolts

4

Set

the
runout
of
oil

pump
cover

within

0
D7
mm
0
0028
in

total

indicator

reading
See

Figure
AT
99
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
of

component
is

faulty

replace
the
carrier

as
a
unit

Inspection

Check
clearance

between

pinion

washer
and

planetary
carrier
with

a

feeler

See

Figure
AT

100

Standard
clearance

0
20
to

0
70
mm

0
0079
to
0
0276
in

Clearance

I

Jr

I
1

11

r

AT167

Fig
AT
100

Measuring
pinion
washer

to

ca
ier

clearance

AT
44
Replace
if

over
0

80
mm
0

0315

in

CONTROL
VALVE

The

control
valve

assembly
consists

of

many
preci
ion

parts
and

requir
s

extreme

care
when
it
has
to

be
reo

moved
and
serviced
It

is

good
practice

to

place
parts
in

a

part
rack
so
that

they
can
be

reassembled
in

valve

body

in

their

proper
positions
Added
care

should
also
be

exercised
to

prevent

springs
and
other
small

parts
from

being
scattered
and
lo
t

Before

assembly

dip
all

parts
in

clean
automatic
transmission

fluid
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

di
ssembled
and

flushed

Disassembly

I
Remove
bolts

and
nuts
which

retain
oil

trainer
Bolts

may
be
re

moved

with
a
screwdriver
but
it

is

recommended
that

Hexagon
Wrench

HT610oo800
and

Spinner
Handle

HT62350000
be
used
See

Figure

AT
101

HT61000800

Fig
AT
101

Disassembling
valve

body

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

vah
e

and
valve

spring
in
lower
valve

body
to
be
scattered
and
lost
when

removing
separate
plate

I

F
1

D

t
l

a

J
n
f

19l1
Ull

IU
P

C
o
J

CJ
IODrR

CC

t

LL6
SJQIl2J

lhl

fB

rt

AT169

Fig
AT
102

Removing
separate

pllJte

3
Pull

out
manual
valve

as
shown
in

Figure
Ar103

4

Remove
side

plate
Take

out

1st
2nd
shift
valve
2nd

3rd
shift

valve

pressure
modifier

valve
and

three

valve

springs
See

Figure
AT

104
Automatic
Transmission

Fig
AT
103

Removing
manual
val

AT1
1

HT61000800

Fig
AT
104

Removing
side

plate

g

p

e

eguJa

Of
le6Ve
or

r
essure
reguJl

oL

@iO
I
f

g

SecOni
J

lOCltvalYi
y

h

l
l

2I
r

JI
Io
J
l

j

t

1

i

S

r
0

x

t

i

3
1
Note
Do
not
w
it

off
with
screw

drivers
To

avoid

darnagingmachine

screws
do

not
work
it
ff
with

screwdriver

5

Remove
side

plate

pull
out

pres

sure

regulator
valve
second
lock

valve

pressure

regi1lator
plug
and
two

valve

springs

6

Remove
side

plate
With

side

plate
removed
solenoid
downshift

valve
throttle
back

up
valve

vacuum

throttle
valve
2

d
3rd
t

ing
valve

and
three
valve

springs
are
free
for

removal

2nd
3rd

timing
talve

r

en

i
C1iJrilth

rottle
lI

lY
e

M
a

alVSY
I

j1

f

I
1

f
Iv

I

f
2i
3

CP

g

f
st

2nd
S
t
a

el

2i1d

3
d
St1itLvalv

so

iit
a

stiift

V81v
i

hrottle

f

iicnjp
VB
y
i

P

ie
mo

i

Inspection

r

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
manner
disCard

3

Test
valve

springs
for

weakened
Fig
AT

105

Components
ports
of
control
uolue

tension

if

necessary
replace

4

Examine

for

any

sign

oLdamage

or

score
marks
on

separate

plate
If

left
unheedcd

oiL
will

bypass
correct

oil

passages
causing
many
types
of

abnormalities

in

thesystem

AT45
5
Check
oil

passages
in

valve
b

dy

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