DATSUN PICK-UP 1977 Service Manual

Automatic
Transmission

TROUBLE
SHOOTING
GUIDE
FOR
3N71B
AUTOMATIC

TRANSMISSION

Order
Test
item

Checking
Oil
level

gauge

2
Downshift
solenoid

3

Manuallinkage

L

4
Inhibitor
switch

5

Engine
idling
rpm

6
Vacuum

pressure
of

vacuum

pipe

7

Operation
in
each

range

8

Creep
of
vehicle

Stall
test
I

Oil

pressure
before

tesling
1

2
Stall
test

3
Oil

pressure
after

testing

Road
test
Slow
acceleration

I

st
2nd

2nd
3rd

2

Quick
acceleration

lst
2nd

2nd
3rd

3

Kick
down

operation

3rd
2nd

or

2nd
1st
Procedure

Check

gauge
for
oil
level
and

leakage
before
and

after
each

test

Check
for
sound
of

operating
solenoid
when

depressing

accelerator

pedal
fully
with

ignition
key
ON

Check

by

shifting
into

P
lR
IN
D
2
and
I

ranges
with
selector
lever

Check

whether
starter

operates
in
N
and
p

ranges
only

and
whether
reverse

lamp
operates
in

R
range
only

Check
whelher

idling
rpm
meet

standard

Check
whether

vacuum

pressure
is

more
than
450

mmHg

in

idling
and
whether
it

decreases
with

increasing
rpm

Check
whether
transmission

engages
positively
by
shifting

N
0
N

2
N

l
I
and
N
R

range

while

idling
with
brake

applied

Check
whether

there
is

any
creep
in
D
2

R

ranges
and

Measure
line

pressures
in
D
2
I
and
R

range
while

idling

Measure

engine

rpm
and
line

pressure
in
D
2
I

and

R

ranges
during
full
throttle

operati
n

Notes

a

Temperature
of

torque
converter
oil
used
in
test
should

be
from
600

to
1000C
1400
to
2120F
i
e

sufficiently

warmed

up
but
not
overheated

b
To
cool
oil

between
each
stall
test
for
D
2
I

and
R

ranges
idle

engine
i
e

rpm
at
about
1
200

rpm
for
more
than
1
minute
in
P

range
Measurement

time
must
not
be
more
than
5
seconds

Same
as
item
I

Check
vehide

speeds
and

engine
cpm
in

shifting
up
Ist

2nd

range
and
2nd
Jo3rd
range
while

running
with
lever
in

D

range
and

engine
vacuum

pressure
of
about
200

I11I1lHg

Same

as
item
1
above

except
with

engine
vacuum
pressure

of
0

mmHg
i

e
in

position
just
before
kickdown

Check
whether
the
kickdown

operates
and
measure
the
time

delays
while

running
at
30
40
50
60
70
km
h
18
25
30

37
43
MPH
in

D3
range

AT

57

Automatic
Transmission

Order
Test
item

4
Shift
down

Dr
O2
0

5

Shift
down

DJ
12
1

6
Shift
down

DJ
2

7
Shift

up

I

12

8
Shift

up
or
down
when

start

iog
in

2

range

9

Parking

Others
Abnormal
shock
oil

leakage
Procedure

Check
vehicle

speeds
and

engine
rpm
in

shifting
down
from

3rd
2nd
I

st

sequentially
while

coasting
with

accelerater

pedal
released
in

D3
range
and

engine
vacuum

pressure
of
about
450

mmHg

Check
for

shifting
down

OJ
12
and

engine
braking
and

further
for

shifting
down

12
I
and

engine
braking
after

shifting
the
lever
into

I

range
with
the
accelerator

pedal

released
and
the

engine
vacuum

pressure
of
0

mmHg
while

driving
at
about
50
km
h

30
MPH
in

OJ
range

Check
for

quick
shifting
down

0
2
and

engine
biaking

after

shifting
the

lever
into
2

range
while

driving
at
about

50
km
h
30
MPH
in

OJ
range

Further
check
for

locking
of
the

transmission
in

2nd

gear

ratio

regardless
of
vehicle

speed

Check
for
failure
of
the
transmission
to
shift

up
during

acceleration
when

starting
in
I

range

Check
the
transmission

for
not

shifting
up
or
down

during

acceleration
or
deceleration
when

starting
in

2

rang

Confirm
that
vehicle
will
not
move
on

grade
when

shifting

to

P

range

Enter
into
record
conditions
observed

during
these
tests

such
as

gear
noise

abnormal
clutch
noise
and

acceleration

performance

AT
58

Automatic
Transmission

SERVICE
DATA
AND
SPECIFICATIONS

General

specifications
AfT

Torque
converter

Type

Stall

torque
ratio
Symmetrica13
element
I

stage

2

phase
torque
converter

2
0
I

Transmission

Type

Control
elements

Multiple
disc
clutch

Band
brake

Multiple
disc
brake

One

way
clutch

Gear
ratio

1st

2nd

3rd

Reverse
3

speed
forward
and

one
speed

reverse
with

planetary
gear
train

2

I

I

I

2

458

1458

1

000

2
182

Selector

positions
P
Park

R

Reverse

N
Neutral
Transmission
is

placed
in

neutral

Output
shaft
is

fIXed

Engine
can
be
started

Backward

running

Transmission
is
in

neutral

Engine
can
be

started

Up
or
downshifts

automatically
to

and
from
I

st
2nd
and

top

Fixed
at
2nd

Fixed
at
low

or
downshifts
from

2nd
o
Drive

2
2nd
lock

I
Lock

up

Oil

pump

Type
Internally
intermeshing
involute

gear
pump

Number
of

pump

Oil
Automatic
transmission
fluid

DEXRON

type

5
5

liters

SUU
s

qt
4Ulmp
qt

Approximately
2
7
liters

2UU
s

qt
2XIrnp

qt

in

torque
converter

Controlled

by
measuring
the

nega

tive

pressure
of
intake
manifold

and
the
revolution
of

output
shaft

Forced
lubrication

by
an
oil

pump

Water
cooled

by
a
circulation

type

auxiliary
cooler

located
at
the

radiator
Capacity

Hydraulic
control

system

Lubrication

system

Cooling
system

AT
59

Specifications
and

adjustment
AfT

Automatic
transmission

assembly

Model
code
number

Torque
converter

assembly

Stamped
mark
on
th

e

TiC

Front
clutch

Number
of
drive

plate

Number
of

driven

plates

Clearance

Thickness
of
retainin

g

plate

Rear

clutch

Number
of

drive

plates

Number
of

driven

plates

Clearance

Thickness
of

retaining
plate

Low
reverse
brake

Number

of
drive

plates

Number
f
driven

pla
es

Clearance

Thickness
of

retaining
plaie

Brake

band

Piston
size

Big
dia

S
all
dia

Control
valve

assembly

Stamped
mark

on
slraine

Governor

assembly

Stamped
mark

on

governor
body
Automatic
Transmission

mOl
in

mm
in

mOl

inJ

mOl
in

mOl

in

mOl
in

mOl
in

AT
60
X2402

16
B

3

3

1
6

to
1
8
0

063
to
0

071

10
6
0
417

10

8
0
42S

11
0
0
433

11
2
0
441

11
4
0
449

11
6
0
4S7

4

4

1

0

to
1
5
0

039
to
0

OS9

4
8

0
189

4

4

0
80
to
1
0S
0

0315
to
0

0413

11
8

0
46S

12

0
0

472

12
2
0
480

12
4

0
488

12

6
0
496

12
8
O
S04

64
2

S2

40
1
57

E

35

Automatic

Transmission

Engine

Idling
and

stall

revolution

Idling
revolution

Stall

revolution
rpm

rpm
6S0
ai
0

position

2

000
to

2

200

TIghtening
torque

kg
m
ft
lb

Drive

plate
to

crankshaft

Drive

plate
to

torque
converter

Converter

housing
to

engine

Transmission
case
to

converter

housing

Transmission
case
to

rear
extension

Oil

pan
to
transmission

case

Servo

piston
retaine
T

to

transmission
case

Pislon
slem
when

adjuting
band
brake

Piston

stem
lock
nut

One

way
clutch
inner

race

to
transmission

case

Control
valve

body
to

transmission
case

Lower
valve

body
to

upper
valve

body

Side

plat
to

control
valve

body

Nut
for
control
valve

reamer
bolt

Oil
strainer

to
lower

valve

body

Governor

valve

body
to

oil
distribu
tor

Oil

pump
housing
to

oil

pump
cover

Inhibitor
switch
to
transmission

case

Manual
shaft
lock
nut

Oil
cooler

pipe
to
transmission
case

Test

plug
oil

pressure
inspection
hole

Support
actuator

parking
rod

inserting
position
to

rear
extension

I

Oil

charging
pipe
to
case

Dust

cover

to
converter

housing

Selector

range
lever
to
manual
shaft
14

0
to

16
0
101
to

116

4
0
to
5
0

29
to

36

4
0

to
S
O

29
10

36

4
S
to
5
5

33
to

40

2
0
to

S

14
to
18

O
S
to

0
7

4

to
S

O

S
to

0
7
4
to
S

1
2
to
1
5

9
to
11

1
5
to
4
0

I
I

to
29

1
3
to
1

8
9

to
13

0

5S
to
0
75
4
to
S

0
25

to
O
3S

2
to
3

0

25
to

0
35
2
to
3

O

S
to

0
7
4
to
S

0

25
to
0
35

2
to
3

D
S

100
7
4
to
5

0

6
to
0

8
4
to
6

0
5
to

0
7
4
toS

3
0

to
4

0
22

to
29

3
0
to

S
O

22
to

36

I
4to
2
1

10
to
IS

0
8
to
I
1
6
to
8

O
5S
to
0
7S

4
to
S

O
5S
to

0
75
4
to
S

3
0
to
4

0
22
to
29

Turn

back
two

turns
after

tightening

AT
61

Automatic
Transmission

SPECIAL
SERVICE
TOOLS

No
Tool
number

tool
name
Description
For

use

on
Reference

page
or

Figure
No

Oil

pressure
gauge

set
3N71B

Fig
AT
11
2

and

3N71A

AfT
ST2S0SS001
Use
for

checking

hydraulic
pressure

SE119

2
ST07870000
Use
for

setting
transmission
3N71

B
Page
AT

36

AfT

Transmission

case
stand

SE120

3
ST2S850000
Use
for

removing
oil

pump
3N7IB

Fig
AT
S6

and

Sliding
hammers

3N71A

J
AfT

JIB

SE121

4
ST2S42000I
Use
for

assemblilJg
or

disassembling
front
and

rear
clutch
3N71B

Fig
AT
79

and

Fig
AT
86

Clutch

spring
3N7lA

compressor
AIT

SE
122

3N71B

Fig
AT
69

and

3N71A

AlT
Torque
wrench
Use
for

tightening
correct

torque

Max
torque
4

6

kg
m
0

33
ft

lb

Drive

angle
3
8

square
S
GG93010000

SE123

AT
62

Automatic
Transmission

Tool
number
For

Reference

No

Description
use

page
or

tool
name
on

Figure
No

6

ST2S490000
Socket
extension

to

connect

torque
wrench
GG93010000
with
3N71B

Fig
AT
69

Socket
extension
W

square
socket
wrench

AIT

V

SE124

7
ST2S160000

Use
for

tightening
correct

torque
3N71B

Fig
AT
107

Torque
driver
Max

torque
1

04

kg
m
90
ft
lb
A
T

Fig
AT
108

and

3N71A

3

SE125

8

HT69860000
Use
for

removing
and

replacing
snap
ring
3N71B

Fig
AT

S9

and

Snap
ring
remover

3N71A

AIT

SE126

9
ST2S320001
Use
for

removing
and

replacing
snap
ring
3N71B

Fig
AT
79

and

Fig
AT
86

Snap
ring
remover

3N71A

AIT

SE305

Hex
head

extension
Use
for

removing
and

installing
one

way
clutch
inner

race
with

torque
wrench

Drive

angle
W

square
and
6
mOl
across
flat
width
3N71B

AIT
Fig
AT
64

Fig
AT

69

Page
AT
42
10
ST2SS70001

SE128

AT
I

AutomaJic
Transmission

No
Tool
number

tool
name
Description
For

use

on
Reference

page
or

Figure
No

II

HT623S0Q00
Use
for

disassemlbing
and

assembling
control
valve

3N71B

and

3N71A

AIT
Fig
AT
IOI

Fig
AT

I04

Spinner
handle

SE129

12
HT61000800
Use
for

disassembling
and

assembling
control
valve

3N71B

Fig
AT
IOI

and

Fig
AT
104

Hexagon
wrench

3N71A

Fig
AT
I07

AIT
Fili
AT
108

0

SE130

13
ST2SS80000
Use
for

centering
oil

pump
3N71B

Fig
AT

98

and

Fig
A

T
99

Oil

pump

3N71A

l
Ssemlbing
gauge

AIT

SE131

AT
1l
A

DATSUN
PICK
UP

MODEL
620
SERIES

I
NISSAN

I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
0

SECTION

PD

PROPELLER

SHAFT

DIFFERENTIAL

CARRIER

PROPELLER
SHAFT
AND

CENTER

BEARING

DIFFERENTIAL
CARRIER

TYPE
H19D

TROUBLE
DIAGNOSES
AND

CORRECTIONS

SERVICE
DATA
AND
I

SPECiFiCATIONS
PD

16

SPECIAL
SERVICE

TOOLS
PD
19
PD
2

f

PD
5

PD
14

PROPElLER
SHAFT
DIFFERENTIAL

CARRIER

PROPELLER
SHAFT

AND
CENTER

BEARING

CONTENTS

DESCRIPTION

REMOVAL
AND
INSTALLATION

DISASSEMBLY
AND
ASSEMBLY

INSPECTION

i

t

I
tl
J

I

O

148
5
5
85
PD
2

PD
2

PD
3

PD
3
CHECKING
AND

CORRECTING

UNBALANCED

PROPELLER
SHAFT

SERVICE
DATA

TROUBLE

DIAGNOSES
AND

CORRECTIONS

PD
4
PD
3

PD
4

2

483
19
02
750
29
53

987
38
86

Long
wheelbase
and

Deluxe
cab

models

Unit
mm
in
35

1
38

Front

5

Companion
flange

6
Plain
washer

7
Self

locking
nut

8

Flange

yoke
Rea

1
Sleeve

yoke

assembly

2
Center

bearing

3
Center

bearing
insulator

4

Center

bearing
bracket

DESCRIP
TION

The

propeller
shaft

on
the
620

series
is
3

joint

type

The

propeller
shaft

and
universal

joint

assembly
is

carefully
balanced

during
original

assembly
that
is
the

dynamic
unbalance
is
under
35

gr
cm

0
49
in

oz
at
S

800

rpm

If
the

propeller
shaft

has
to
be

assembled
it
must
be

made

carefully

so
that
the

above
limit
is
not
ex

ceeded
Therefore

when
the
vehicle
is

to
be
undercoated

cover
the

propeller

shaft
and

universal

joints
to

prevent

application
of
the

undercoating
ma

terial
9

Bearing
race

assembly

10

Snap
ring

11
Journal

assembly

PD218

Fig
PD

l

Crou
ctional
v
w

of
propelkr
hafl

REMOVAL
AND

INSTALLATION
3
Remove

bolts

connecting
shaft
to

companion
flange
of
differential

car

rier
See

Figure
PD
3

I
Raise
vehicle
on

hoist
Put
match

marks
both
on

propeller
shaft

and

companion

flange
so
that
shaft

can
be

reinstalled
in

the

original

position

2

Remove
bolts

retaining
center

bearing
bracket
See

Figure
PD
2

PD220

Fig
PD
3

Removing
propclkr
cha
t

PD219

Fig
PD
2

Removing
center

bearing

bruckel
4

Withdraw

propeller
shaft
sleeve

yoke
from

transmission

by

moving

shaft
rearward

passing
it
under

rear

axle

PD
2