1973 DATSUN B110 engine

CHASSIS

Trouble

IA
BCD
EFGH
I

J
K
L

1M
N
0
p

1m
n

q
r
s
t
u
v

Iw
x

y

Too

sharp
shock
in

change
from

1
2
4
5
3

@

1st
to
2nd

Too

sharp
shock
in

change
from

1
2

3
3
5
4

@

2ndu
to
3rd

Almost
no
shock
or
clutches

slipping
in

change
from
1st
to
1
2
3
4
6
8
7
5

@
@

2nd

Almost
no
shock

or

slipping
in

@
@

@
change
from
2nd

to
3rd
1

2
3

4
6
8
7
5

Engine
extremely
races

Vehicle
braked

by
gear

change
from

2
1

@
@

I

@I
1st

to
2nd

Vehicle
braked

by
gear
change
from

3
2
1

@

I

I
2nd
to
3rd

Failure
to

change
gear
from

1

346
5
2

1
@

@

3rd
to

2nd

Failure
to

change
gear
from

2nd

I
3
4
6
5
2

1

@I
to
Ist

or
from
3rd
to
1st

Gear

change
shock
felt

during
car

I

speed
decrease

by

releasing
2
3
4
5
6

j
I

accelerating
pedaL

Too

high
change
point
in

case
from

j
3rd
to
2nd
from

2nd
to
1
2
3
4
5
6

1st

Kick
down

does
not

operate
by

depressing
pedal
in

3rd
within

2

1
4

5
3

@
1

kick
down
vehicle

speed

Kick
down

operates
or

engine

overruns

by

depressing

pedal
in

@
@
3rd

beyond
kick

down

vehicle
1
2
3
5

6
7
4

speed
limi
t

Extremely
races
or

slips
in

chang

ing
from
3rd
to

2nd

by
1
2

4
6
5

3

j
@

@
@I

depressing
pedaL

Failure
to

change
from

3rd
to
2nd

j
1

2
4

51
3

@

I
j

by

changing
lever
into

2

range

Gear

change
from
2nd

to
1st

or
from

2nd
to
3rd
in
2
1
2
3

range

AT
56

AUTOMATIC
TRANSMISSIO
N

Trouble

IA
BCD

IE
F
G
H

IIJ
K
L

1M
NO
P

1m
n
q

riB
t

u
v
w

x

y

No
shock
at

changing
from
I
to

7
5

@
@
I

1
2
3
4

1
6

I
2

range
or

engine
extremely
races

Failure
to

change
from
3rd
to
2nd

1
2
4
5
7

16
3

I
@@
@

by

turning
lever
into
I

range

Engine
brake
does
not

operate
in

I
2
4
5
3

@
J

I

range

Gear

change
from
1st
to

2nd

or
from

2nd
to
3rd
in
I
I
2

@

range

Does

not

change
from
2nd

1
2
456
7
3

@
@

to
1st
in
I

range

Large
shock

changing
from
2nd

1

2
4
3

IDI

to
1st
in

I

range

Vehicle

will
move

when

changing
into

P

range
or

parking
gear
does
not

1

@

disengage
by
turning
off
P

range

Transmission
overheats
1
3

4

12
6
8
7
5

@@@I@@
@

Oil

shoots

out

during
run

@@@
@@
@
White
smoke
issues
out
from
tail
1

3
5

6
2
7
8
4

pipe
during
run

Offensive
smell
at
oil

charging

11
2

I@
@
ID@I

J
@@

@

pipe

Transmission
noise
in
P

and
N

1

2

I
I@
ranges

Transmission
noise
in

0

2
I

1
2

@
@

@
@

and
R

ranges

AT

57

CHASSIS

Trouble

shooting
guide
for

3N71B
Automatic
Transmission

Order
Test
item

Checking
Oil

level

gauge

2
Downshift
solenoid

3

ManuaIlinkage

4

Inhibitor
switch

5

Engine
idling
rpm

6
Vacuum

pressure
of
vacuum

pipe

7

Operation
in
each

range

8

Creep
of
vehicle

Stall
lest
Oil

pressure
before

testing

2
Stall
test

3

Oil

pressure
after

testing

Road
test
Slow
acceleration

Ist
2nd

2nd
3rd

2

Quick
acceleration

Ist
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

by
sound
whether
solenoid

operates
when

depressing

accelerating
pedal

fully
with

ignition
key
ON

Check

changing
conditions
into

P
R

N
D
2

and
I

ranges
by
moving
selector
lever

Check

whether
starter

operates
in
N

and
tp

ranges
only

and
whether

reverse

lamp
operates
in
R

range
only

Check
whether

idling
rpm
meet
standard

Checking
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
o
D
N
2
N
I

and
N
R

range

while

idling
with
brake

applied

Check
whether
there

is

any

creep
in
D
2
I
and

R

ranges

2
1

and
R
range
Measure
line

pressures
in
D

while

idling

Measure

engine
rpm
and
line

pressure
in
D
2
I

and

R

ranges
during
fullthrallIe

operation

Notes

a

Temperature
of

torque
converter
oil

used
in
test
should

be

from
600
to
lOOoC

1400
to
2120F
i
e

sufficiently

warmed

up
but
not
overheated

b

For

cooling
oil

between
each
stall
test
for
D
2

1

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
secon

Same
as
the
item
I

Check
vehicle

speeds
and

engine

rpm
in

shifting
up
1st

2nd

range
and
2nd
J
3rd

range
while

running
with

lever
in

D

range
and

engine
vacuum

pressure
of

about
200

mmHg

Same
as

the
item
1
above

except
with

engine
vacuum

pressure
of
0

mmHg
i
e
in

position
just
before
kick

down

Check
whether
the
kick
down

operates
and

measure
the

time

delays
while

running
at
30
40
50

60
70
km
h

19

25
31
38
44
MPH
in
D

range

AT
58

Order

Others
AUTOMATIC
TRANSMISSION

Test
item

4

Shift
down

Dr4D2
DI

5

Shift
down

DJ
I2
l

6
Shift
down

DJ
2

7

Shift

up

I

12

8
Shift

up
or

down
when
start

ing
in
2

range

9

Parking

Abnormal
shock
oil

leakage
Procedure

Check
vehicle

speeds
and

engine
rpm
in

shifting
down
3rd

2nd
I

st
continued

while

coasting
with

acceleraling

pedal
released
in

0

range
and

engine
vacuum

pressure
of

about

450

mmHg

Check
for

shifting
down

DJ
12
and

engine

braking
and

further
for

shifting
down

12
11
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
SO
km
h
31

MPH
in

DJ
range

Check
for

quick

shifting
down

DJ
2
and

engine
braking

after

shifting
the
lever
into

2

range
while

driving
at
about

50
km
h
31
MPH
in

DJ
range

Further
check

the
transmission
for

being
locked
to
the

2nd

gear
ratio

regardless
of
vehicle

speed

Check
for
the

transmission
not

shifting

up
during
acceIera

tion
when

starting
in
1
t

nge

It

Check
the
transmission

for
not

shifting

up
or
down

durih
t

acceleration
or

deceleration
when

starting
in
2

range

Confirm
that
vehicle
will
not
move
on

grade
when

shifting

to
P

range

Put
on

record
of
observed
conditions

during
these

tests

such

as

gear
noise

abnormal
noise

of
clutches
and

acceleration

performance

AT

59

CHASSIS

SERVICE
DATA
AND
SPECIFICATIONS

General

specifications

Torque
converter

Type

Stall

torque
ratio

Transmission

Type

Control
elements

Gear
ratio

Selector

positions

Oil

pump

Type

Number
of

pump

Oil

Capacity

Hydraulic
control

system

Lubrication

system

Cooling
system
Multiple
disc
clutch

Band
brake

Multiple
disc
brake

One

way
clutch

1st

lnd

3rd

Reverse

P
Park

R
Reverse

N
Neutral

D
Drive

1
lnd
lock

I
Lock

up

AT
60
Symmetrical3
element
I

stage
l

phase
torque

converter

coupling

2

0
I

3

speed
forward
and
one

speed
reverse
with

planetary
gear
train

1

I

I

I

2

458

1
458

1
000

2
182

The
transmission
is

placed
in
neutral
The

output

shaft
is
fixed
The

engine
can
be
started

Backward

running

The
transmission
is
in

neutral
The

engine
can
be

started

Up
or
downshifts

automatically
to
and

from
1st

lnd
and

top

Fixed
at
2nd

Fixed
at
low

or
downshifts
from
2nd

Internally
intermeslting
involute

gear
pump

Automatic
transmission
fluid

Dexron

type

5

5
liters
57
8
U
S

qts
47
8

Imp
qts

Approximately
1
7
liters
27
8
U

S

qts
2

3
8

Imp
qts
in

torque
converter

Controlled

by

detecting
the

negative
pressure

of
intake
manifold
and
the
revolution

speed
of

output
shaft

Forced
lubrication

by
an
oil

pwnp

Air
cooled

CHASSIS

Engine
idling
and
stall
revolution

Engine
with

emission
control
device

Idling
revolution

rpm
650
at
0

position

800
at
N

position

1
750
to
2

000

Stall
revolution

rpm

Tightening

torque
kg
m
ft
Ib

Test

plug
oil

pressure
inspection
hole

Support
actuator

parking
rod

inserting
position
to
rear
extension

Oil

charging
pipe
to
case

Dust
cover
to

converter

housing

Selector

range
lever
to

manual
shaft

Lower
shift
rod

lock
nut
6
5
t07
5

47
to

54

0
8

to
1
0
5
8
to
7
2

4
0
to
5
0
30
to

36

4
0
to
5
0

30
to

36

2
0
to
2
5
15

to
18

0
5

to
0
7
3
6

to
5
1

0
5

to
0
7
3
6toS
I

1
2

to
1
5
8
7

to
10
8

1
5
to
4

0
II
to

29

1
3

to
1

8
9
4
to

13

0
55
to
0
75
4
0
to
5
4

0

25
to

0
35
1

9
to
2
5

0
25
to

0
35
1
9
to
2
5

0
5
to
0
7
3

6
to
5
I

0
25

to
0
35
1
9
to

2
5

0
5
to
0
7
3

6
to
5
1

0

6
to
0
8
4
4
to
5
8

0
5
to
0

7
3

6
to
5
1

3
0
to
4

0
22
to

29

3
0

to
5
0

22
to

36

14
to
2
1

10
to
15

0

8
to
l
l
5
8
to

7
9

0
55
to
0
75
4
0

to
5
4

0
55

to
0
75
4
0
to
5
4

3
0
to
4
0
22
to

29

2
0
to
2

9

15
to

21
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
retainer
to
transmission
case

Piston
stem

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

plate
to
control
valve

body

Nut
for
control

valve
reamer
bolt

Oil

strainer
to
lower
valve

body

Governor
valve

body
to
oil
distributor

Oil

pump
housing
to

oil

pump
cover

Inhibitor
switch
to
transmh
sion
case

Manual
shaft
lock
nut

Oil

tube
to

transmission
case

Turn
back
two
turns
after

tightening

AT
62

CHASSIS

8

Support
the

engine
remove
the

engine
mounting

bolts
indicated
by
arrow
mark
and
separate
the

sus

pension
cross
member
from
the

engine
assembly

Ij

i

1

C
w

ii

lJ
c

l
I

N

r
1
a

n
h

JI

Fig
FA
7

Supporting
engine

I

IV

U

II
G

11J
r
j

F
l
I
IV
I

iL

I

0
I
l

tt
I
i

L

I
It

v

i
1

0
b
c

Ii
irti
J
I

I

1
1
Zi
J

l

ll

c

h
f

J
f
C

Fig
FA
8

Removing
engine
mounting
bolts

9

Apply
a

jack
to
the

patch
unit
in
the
center
of
the

suspension
cross
member
to

support
the
member
loosen

the
bolts

indicated
by
arrow
marks
and

separate
the

suspension
cross
member
from
the

body

Fig
FA
9

Jack

up
point
of
suspension
cross
member
Fig
FA
10

Removing
suspension
cross
member

10
Loosen
the
self

locking
nut
on
the
strut
assembly

and
holding
the
strut

assembly
dismount
the
front

suspension
assembly

Fig
F
1
11

Removing
s

flocking
nut

Fig
F
A
12

Removing
front
axle
and

suspension
assembly

FAA

Tightening
torque

3

way
connector
1
5

to
1
8

kg
m

10
8
to
13
0
ft
lh

1
5
to
1
8

kg
m

10

8
to
13

0
ft

lh

1
5
to
1
8

kg
m

10

8
to
13

0
ft

lb

0

7
to
0
9

kg
m

5
1
to
6
5

ft
1b
Master

cylinder

Brake
hose

Air
bleeder

5

Fill
the

master

cylinder
brake

fluid
reservoir
with

brake
fluid
and

perform
air

bleeding
complele1y

Note
a
Do
not
use

brake
fluid
other
than

specified

b
The

specified
brake
fluid
is
used
for

both

single

and
tandem

type
master

cylinders

6

Upon

completion
of
air

bleeding
make

sure
that
the

brake

operates
correctly
and
check
the
brake
tube
and

hose
connectors
for
fluid

leaking
Fully
depress
the

brake

pedal
continue
to

depress
the
brake

pedal
for
several

seconds
and
make
sure
that
no
brake

fluid
leaks
from

any

part
of
the
brake
line

Replace
defective

part
if

required

Brake
line

pressure
differential

warning

light
switch

A

warning
light
is

located
on
the
instrument

panel
to

warn
the
driver
when

a

pressure
difference
of
13

to
17

kg
cm2
185
to

2421bJsq
in
exists
between
the

front
and

rear
b
rake

systems

A

hydraulically
actuated

warning
light
switch

is
located

in

the

engine
compartment
Both
front
and
rear
brake

systems
are
connected
to
this
switch
assembly

When

a

pressure
difference
of
13

to
17

kgJcm2
185
to

242

lbJsq
in
occurs
between
the
front
and
rear

brake

systems
the
valves

will
shuttle
toward
the
side
with
the

low

pressure
The
valve
contacts
with
the
switch
terminal
BRAKE

the

ground
circuit

for
the

warning
light
is

completed
and

thus
the

warning
light
lights

In
this

case
correct
the

hydraulic
brake

problem
and

bleed
the
brakes

Check
the

warning
light
switch

assembly
for
a

proper

operation
Check
the
switch

assembly
for
fluid

leakage

Note
Do

not

attempt
to

repair
switch
for

any
reason

replace
switch

assembly
completely

1
To
front
brake

L
H

2

From
master

cylinder
F

3
From
master

cylinder
R
4
To
rear
brake
L
B
R
M

5
To
front
brake
R
H

Fig
BR
12

Warning
light
switch

r

I

@

I
I
3

I
Valve

assembly

4

Piston
load

spring
Wire
terminal

Brake
tube

Fig
BR
13
Sectional

view

of

warning
light
switch

BR
7