1977 DATSUN PICK-UP ECO

CHECKING
SPEED

CHANGING
CONDITION

The
driver
s

feeling
during
gear

changes
should
also
be
checkedatten

tively

I
A

sharp
shock
or
unSffioothness
is

felt

during
a

gear
change

2
A

gear
change
is
made
with

a

long

and

dragging
feeling

These
indicate
that

the
tIuottle

pressure
is
too
low
or
some
valve

connected
to
the

throttle
is

faulty
h
k

100
1
1

2
I
2

J

I

1

2
I

I

I
2
3

oo
I

c

I

E

I

I

300

I

Z
5

L

mmHg

t
1

400

I

I

1

Output
shaft

speed
rpm

20
30
40

50
60
70
80
90100
00

io
3
0
40
0
60

Vehicle

speed
R
4

315
r

0
321
6
00
14

ATll0

Fig
AT
111
Shift
IChedule
Automatic
Transmission

SHI

SCHEDULE

500

CHECKING
ITEMS
DURING

km
hO
1O

SPEED

CHANGE

I

In
D

range
gear
changes

DI

D2
D3
are
effected
In
R

range
the

speed
does

not
increase

2
The
kickdown

operates

properly

3

By
moving
the
lever
from
D
to

I

gear
changes
D

2
1

2
1

are
effected
In
the

ranges
12
and

I
the

engine
braking
works

prop

erly

4
In
I
the

speed
does
not
in

crease

5
Should
be

quickly
fixed

at
2

range

6
In

P
vehicle
can
he

parked

properly

If

any
malfunction
occurs
in
second

gear
during
the
road
test
that
is

if

vehicle
shakes

drags
or
slings
while

shifting
up
from
D

directly
to

D
or
in

shifting
up
from
D

to

D2
the
brake
band
should
be
ad

justed
If

these
troubles
remain
after

the
brake
band
is

adjusted
check
the

servo

piston
seal
for
oil

leakage
MPH
Ii
io

LINE
PRESSURE
TEST

When

any

slipping
occurs
in
clutch

or
brake
or
the
feeling

during
a

speed

change
is
not
correct
the
line

pressure

must
be
checked

Measuring
line

pressure
is
done

by
a

pressure
gauge
attached
to
two

pres

sure

measuring
holes
after

removing

blind

plugs
located
at

transmission

case
See

Figure
AT
112

The
line

pressure
measurement
is

begun
at

idling
and
taken

step
by
step

by
enlarging
the
throttle

opening

I
A

sharp
shock
in

up
shifting
or

too

high
changing
speeds
are
caused

mostly

by
too

high
throttle

pressure

2

Slipping
or

incapability
of

opera

tion
is

mostly
due
to
oil

pressure

leakage
within
the

gear
trains
or

spool

valve

AT
S2
3

3SA

000

t
I

1
I

c
l

1

c

7
D

jf
o

CV

ATl13

1

Lige

pressure

2

Governor
feed

3

SerVo
release

pressure

Fig
AT
112

MeCJ
uring
line

preuure

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

PROPELLER
SHAFT
DIFFERENTIAL
CARRIER

Watch
for
oil

leakage
from
trans

mission

end

Notes

a
Remove

propeller
shaft
carefully

so
as
not
to

damage

spline
sleeve

yoke
and
rear
oil
seal

b

Plug
up
the

opening
in
the
rear
of

rear
extension

housing
to

prevent

oil
from

flowing
out

To
install

reverse
the

foregoing

removal

procedure

1

Align
propeller
shaft
with
com

panion
flange

using
reference
marks

prescribed
in
removal

procedure
and

assemble
with
bolts

Tightening

torque

2
4

to
3
3

kg
m

17

to
24
ft
Ib

2

Insert
bolts

through
the
holes
of

center

beariug
bracket
and

torque
nuts

to
retain
center

bearing
on
cross

member

Tightening
torque

1
6

to
2
2

kg
m

12
to
16
ft
Ib

DISASSEMBLY
AND

ASSEMBLY

Primarily
do
not
disassemble

pro

peller
shaft
because
it
is

balanced
as
an

assembly

However
check

propeller
shaft

with

journal
for
movement
When

journal
does
not
move

smoothly
dis

assemble

1
Mark

propeller
shaft
and

journal

so
that
the

original
combination
can

be
restored
at
assembly

2
Remove

snap
ring
with
a
standard

screwdriver

3
Lightly

tap
base
of

yoke
with
a

hammer
and
withdraw

bearing
race

See

Figure
PD
4

PDOO5

Fig
PD
4
Remo

i
bearing
Note
When

removing
journal
from

yoke
be
careful
not
to

damage

journal
and

yoke
bole

When

disassembling
and

repairing

center

bearing
are

required
the
follow

ing
procedures
are

applied

1
Put
match
marks
on

flange
and

front

propeller
shaft
Remove
bolts

connecting

flange
yoke
to

companion

flange

2

Applying
Drive
Pinion

Flange

Wrench
ST3lS30000
loosen
off
lock

ing
nut
and

remove
center

bearing
See

Figure
PD
5

P0172
ST31530000

Fig
PD
5
Remouing
locking
nut

To
assemble
reverse
the
foregoing

procedure
using
reference
marks

pre

scribed
in

disassembly
procedure

New

bearing
need
not
be
lubricated

since
it
is

lubricated
for
life
Fill

joint

with
recommended
multi

purpose

grease
whenever

propeller
shaft
is

overhauled

Use
related

snap
rings
of
the
same

thickness
and
be
sure
that

play
is

below
0
02
mm
0
0008
in

Available

snap
ring

Thickness

mm
in
Color

identification

2
00
0
0787

2
02
0
079S

2
Q4
0
0803

2
06
0
08
II

2
08
0
0819

2
10
0
0827

2
12
0
83S

2
14

0
0843
White

Yellow

Red

Green

Blue

Right
Brown

No

paint

Pink

PD

3
Install
and
assemble

components

correctly
so
that

joint
moves
under

friction
resistance
of
less
than
is
o

kg
em

13
in
lb

When
the

above

steps
are
complete

place
the

shaft
in

a

balancing
machine

and

adjust
unbalance
less
than
3S

gr
cm
0
49
in

oz
at
S
800

rpm

Center

bearing
assembling
pro

cedures
are
as
follows

I
Install
center

bearing
in

center

bearing
insulator

2
Install
center

bearing

assembly

and

companion
flange
on
front
shaft

usiug
reference
marks
established
in

disassembly

procedure

3
Install
washer
and

locking
nut
on

front
shaft

and

tighten
nut

using
Drive

Pinion

Flange
Wrench
ST3IS30000
to

specified
torque

Tightening
torque

20
0

to
24
0

kg
m

I4S
to
174
ft
lb

4
Join

companion
flange
of
front

shaft

with

f1ange
yoke
of
rear
shaft

and

tighten
connect
bolts
to

specified

torque

Tightening

torque

2
4

to
3

3

kg
m

17
to
24
ft
Ib

S
Install
center

bearing
bracket

on

center

bearing

INSPECTION

I
Check

journal
pin
for
dent
or

brinell
marks
and

yoke
hole
for

sign

of
wear
or

damage

Snap
ring
bearing
and
seal

ring

should
also
be

inspected
to
see
if
these

are

damaged
worn
or
deformed
Re

place
if

necessary

2
heck
center

bearing

by
rotating

bearing
race
If
it
is

rough
noisy
or

damaged
discard
Cracked

bearing

insulator
cannot
be
tolerated
here

3
Check

propeller
shaft
tube
sur

face
for
dent
or
crack

Change
if

necessary

Condition

Seizure
of

breakage

Oil

leakage
PROPELLER
SHAFT

IFFERENTIAl

CARRIER

Probable
cause

Shortage
of
oil
or

use
of
unsuitable
oil

Excessively
small
backlash

Incorrect

adjustment
of

bearings
or

gears

Severe
service
due

to
an
excessive

loading

improper
use
of

clutch

Loose
bolts
and
nuts
such
as

ring
gear
bolts

Worn
out
damaged
or

improperly
driven

front
oil
seal

or
bruised
dented
or
abnor

mally
worn
slide
face

of

companion
flange

Loose

gear
carrier

bolts

Faulty

gasket

Loose
fIller
or

drain

plug

Clogged
or

damaged
breather

PD

15
1

j

Corrective
action

Replace

faulty
parts
and

use
reconunended

gear
oil

Adjust
backlash
and

replace
as

required

Replace

faulty
parts

Replace
faulty
parts

Replace

faulty
parts

Replace
faulty
oil
seal

Repair
the

affected

flange
with

sandpaper
or

replace
if
nee

essary

Tighten
the

bolts
to

specified
torque

Replace
faulty

gasket
with
new
one

Tighten
the

plug

Repair
or

replace

Components

Rust

Discoloring
Race
and
roller

u

u

e

2

2
0

3

0

t
c

6
6
6

Fig
h

The
wheel

bearing
is
serv

iceable
if

discoloring
can

be

removed
with

solvent

or

by

polishing

f

a
Inner
race

flaking

t

d

Cracked
roller

iT

t
j

t

11
1

1
t

t

I
l

1
t

F
1ll

JJ
J

t
I

1

ollf

oe
c

g
Recess
on

foDer
Front
Axle
Front

Suspension

Cause

Temperature
increased

during
operation
lowers
when
the

bearing

stops
moisture

inside
the

bearing
is

condensed

becoming
fine

drips

and
the

grease
is

moistened

The

bearing
has
been

placed
in
a

highly
moistened

place
for
a

long

period
of
time

Intrusion
of
moisture
chemicals
etc
or

the

bearing
is

touched
with

bare
hand
and
no

rustproof
action
has

been
taken

Slight
discoloring

may
become
like

oxidized
oil
stain
due
to

grease

In
the

most
cases
this

occurs
when

preliminary

pressure
is
too

high

I
I

I

1

v

i
n

dJ

b
RoUer

flaking

c
Cracked
inner

race

c

f

J
Jt

v

l

e
Recess
on

inner
race

f
Recess

on
outer
race

h
Rust
outer
race

F
A007

Fig
FA
12

Defective
conditions

of
bearing

FA
7

UPPER
AND
LOWER

LINKS

REMOVAL
AND

INSTALLATION

Removal

I
Raise

vehicle
on
a
hoist
or

stands

2
Remove
wheel
and

brake
drum

as

an

assembly

3
Remove
wheel
hub
Refer
to
see

tion
Front
Axle

4

Loosen
bolts

retaining
brake
disc

to
knuckle

spindle
and

remove
brake

disc

5
Remove

knuckle
arm
torsion
bar

spimgJ
stabilizer
shock

absorber
and

tension

rod
in

t
ili
order

referring
the

related
sections

6
Remove

upper
fulcrum
bolt
se

curing
knuckle

spindle
support
to

upper
link

assembly
and
disassemble

them

7
Remove

upper
link

bushings
from

knuckle

spindle
support

8

Remove
screw
bushings
from

both
ends
of
lower
link
fulcrum

pin

9
Loosen
nut
at
lower

portion
of

knuckle

spindle
support
from
inside

and

pull
out
cotter

pin
retaining
ful

crum

pin

10
Pull

out
fulcrum

pin
with

drift

and
remove
knuckle

spindle

support

with
knuckle

spindle
from
lower
link

Then
detach
dust

cover

FA237

Fig
FA

19

Removing
fulcrum
pin

II

Remove
bolts

retaining
upper

link

spindle
and
remove

upper
link

spindle
with
camber

adjusting
shims

from

body
bracket
FrClnt

Axle
Front

Suspension

FA238

Fig
FA

20

Removing
upper
link

spindle

12
Remove
nut

retaining
lower
link

spindle
and
remove

lower
link

spindle

Remove
lower
link

with

torque
arm

from

mounting
bracket

13

Using
Transverse
Unk

Bushing

Replacer
ST36070000
to

lower
link

bushing
tap
it

with
a

hammer
and

drive

out
lower

link

bushing
from

bracket

F

A239

Fig
FA

21

Removing
lower
link

bushing

InstallatIon

Install

upper
and

lower
links
in

the

reverse

sequence
to
removal

noting

the

following
instructions

I

When
the

collar

inside
of

lower

link

mounting
bracket
and

bushing

outside

are
rusted

remove
rust
with

emery

paper

2

Fit
lower
link

bushing
into
lower

link

mounting
bracket

using
Trans

verse
Link

Bushing
Replacer

ST36070000
When

tapping
the
frift

with
a
hammer
be
careful

to
hit
the

drift

squarely

3

Secure
lower
link
to
lower
link

bushing
with
lower
link

spindle
and

torque
nut
to
74

to
8
0

kg
m
54

to

S8
ft
Ib

1

4
1n
4
Install

upper
link

spindle
to

upper

link

mounting
bracket
with

used

camber

adjusting
shims
and
bolts

Torque
bolt
to
7

0
to
9
0

kg
m
SI

to
6S
ft

lb

S

Install
dust
seat
to

the
lower
end

of

j
nuckle

spindle
support

6
Coat

grease
on
the
thread
of

fulcrum

pin
and
line

up
the

notch
of

fulcrum

pin
with

knuckle

spindle

sup

port
for

inserting
cotter

pin
Fit

fulcrum

pin
to

spindle
support
with
a

soft
hammer
Secure
cotter

pin
and

torque
lock
nut
to
0
8

to
1
1

kg
m

S
8

to
8
0
ft
lb

7

Coat

grease
to
the
tIuead

portion

of

screw

bushing
inside

liberally
Posi

tion

knuckle

spindle
support
at
the

center
of
lower
link
and
secure
screw

bushings
temporarily
by
hand
Mter

ascertaining
the
dimensions
become

correct
as
shown
in

Figure
F
A

22

torque
screw

bushings
to
20
to
30

kg
m

I4S
to
217
ft
lb

3

9
05
to

11
05

36
5
9
05
to
11
05

0
3563
to
0
4350

1
431
0
3563
to

0
4350

FA240

Fig
FA
22
In

tailing
IICrew
bu

hing

8

Replace
filler

plug
with

grease

nipple
and

pack
grease
until

grease

comes
out
from
dust
cover
Reinstall

filler

plug

9

Upon
installation
make
sure
that

fulcrum

pin

operates
smoothly
with

the

following
torque

Operating
torque

Less
than
0
5

kg
m
3
6
ft
lb

10
Install

upper
link

bushing
to

knuckle

spindle
support

I
I
Install
knuckle

spindle
support

to

upper
link
insert
fulcrum
bolt
and

torque
nut
to
3
9

to
S
3

kg
m
28
to

38
ft
lb

RA148

Fig
RA
16
Remvoing
spring
pin

6
Remove

rubber
bush
in

spring
if

necessary
and
install
new
bush
Coat

rubber
hush
with
a

soapy
solution

prior
to

assembly

InstaH
rear

spring
in
the

reverse

order

of
removal

noting
the

following

poinc

Vehicle

weight
must
be
on
rear

wheels
when

tightening
front

pin

shackle
and
shock
absorber
lower
end

nut
in

order
to

clamp
rubber
bush
in
a

neutral

or
unloaded

position

Tightening
torque

Spring
fTont

pin
nut

11
5

to
13

0

kg
m

83
to
94
ft
Ib

Spring
shackle
nut

11
5

to
13

0

kg
m

83
t094
ft
b

U

bolt
7
3
to
9

9

kg
m

S3
to
72
ft
lb

Shock
absorber
lower
end
nut

1

6
to

2
2

kg
m

12
to
16
ft
lb
Rear
Axle
Rear

Suspension

SHOCK
ABSORBER

Raise
rear
of

vehicle
and

support

under
axle

case
on
stands
It
is

recom

mended
that
a

hydraulic
hoist
or

open

pit
be
utilized
if

available

2

Disconnect
lower
end
of
shock

absorber

by
removing
nuts

Q
at

spring
seat

3

Disconnect

upper
end
of
shock

absorber

by
removing
nut

2
at
frame

RA146

Fig
RA
J
7

Removing
shock
absorber

Installation
of
shock

absorber
in

the

reverse
order
of

removal

Note
Vehicle

weight
must
be
on

Tear

wheels
when

tigtrtening
shock
ab

sorber

upper
and
lower
ends
in

order
to

clamp
rubber

bushings
in
a

neutral
or
unloaded

position

INSPECTION

REAR
AXLE

SHAFT
AND

WHEEL
BEARING

Inspect
the

following
parts
for

faults
and

replace
as

required

RA
6
I
Check

axle
shaft
for

straightness

cracks

damage
wear

and
distortion

2
Check
the

lip
of
oil
seal
for

damage
deformation
and

wear

3
Check

bearing
for
wear
and

damage

REAR
AXLE

CASE

Check
axle

case
for

yield
deforma

tion

cracks
or
oil

leakage
and

replace

if

necessary

REAR

SPRING

Clean
all

rust
and

dirt
from

spring

leaves

using
a
wire

brush
if

necessary

1

Examine

spring
leaves
for
frae

tures
or

cracks

2

Check
front

bracket
and

pin

shackle
U

bolts
and

spring
seat
for

wear
cracks

straightness
and

damaged

threads
If

faulty

parts
are
found

replace
with

new
ones

3

Inspect
all
rubber

parts
for
wear

damage

separation
and
deformation

Replace
them
if

necessary

SHOCK
ABSORBER

I

Test
shock
absorber
and

compare

with
the

specifications
given
in
Service

Data

and

Specifications

Replace
if

necessary

2
Check
for
oil

leakage
and
cracks

Also
check
shaft
for

straightness

3

Inspect
rubber

bushings
for
dam

age
cracl
s
and
deformation

Replace

parts
if

necessary