1969 DATSUN B110 automatic transmission

Transmission

AUTOMATIC
TRANSMISSION

The
model
3N71B

automatic
transmiSSIOn
IS

a

fully
automatic
Unit

consisting

pnmanly
of

3
element

hydrauhc
torque
converter
and
two

planetary
gear
sets
Two

multiple
disc
clut

ches
a

multiple
disc

brake
a
band

brake
and

a
one

way

sprag
clutch

provide
the
fnctlon

elements

reqUired
to
obtain
the
deSired

fun

tlon
of

the
two

planetary
gear
sets

The
two

planetary
gear
sets

give
three
for

ward

ratIOs
and
one
reverse

Changing
of
the

gear
ratIOs
IS

fully
automatic

In
relation
to

vehicle

speed
and

engine
torque
Input

Vehicle

speed
and

engine
mamfold

vacuum

Signals
are

constantly
fed
to
the
transmiSSIOn

to

prOVide
the

proper

gear
ratIO

for
maximum

effiCiency
and

performance
at
all
throttle

openmgs

The
Model

3N71B
has
SIX
selector

poSitIOns

P
R
N

D
2
1

p
Park

pOSitIOn

posItively
locks
the
out

put
shaft
to

the
transmiSSIOn

case

by
means
of

a

lockmg

pawl
to

prevent
the
vehicle
from

rollmg
either

directIOn

ThiS

pOSitIOn
should
be
selected
whenever
the

dnver

leaves
the
vehicle

The

engme
may
be
started
m
Park

pOSition

R
Reverse

range
enables

the
vehicle

to

be

operated
m
a
reverse
direction

N
Neutral

pOSitIOn
enables
the

engine
to

be
started
and

run
Without

dnvIngthe
vehicle

0
Drive

range
IS
used

for
all
normal

driVing
conditions
Dnve

range
has
three

gear

ratios
from
the

startmg
ratIO
to
direct
dnve

2
2

range
prOVides
performance
for

dnvIng
onshppery
surfaces

2

range
can
also

be

used
for

engine

brakmg

2

range
can

be
selected
at

any
vehicle

speed

and

prevents
the
transmlsslOn

from

shifting

out
of
second

gear

108
Rg
162
Idenllflcatlon

number

I
1

range
can
be

selected
at

any
vehicle

speed
and
the
transmiSSIOn
will
shift
to
second

gear
and

remain
m
second
until
vehicle

speed

IS
reduced
to

approximately
25
to
31
MPH

1

range
posItion
prevents
the
transmiSSIOn

from

shlftmg
out

of
low

gear
ThiS

IS

par

tlcularly
benefiCial
for

mamtamIng
maximum

engine
brakmg
when

continUOUS
low

gear

operation
IS
deSirable

The

torque
converter

assembly
IS

of
welded

constructIOn
and
can
not
be
dlssassembled
for

service

FlUld
Recommendatwn

Use
automatic
transmiSSIOn
flUid

haVing

DEXRON
IdentificatIOns

only
m
the
3N71B

automatic
transmiSSIOn

denttficatwn
Number

Stamped

posttwn

The

plate
attached
to
the

rIght
hand
Side
of

transmission
case
as
shown
m

Figure
161

denttficatwn
of
number

arrangements

See

Page
109

RECOMMENDATIONS

Due
to
the

compleXity
of

setting
up
a

disassembled
transmissIOn
as
well

as
the

special
tools

necessary
It

IS
recommended

thaL
nternal

epalrs
be
left
to

a

fully

eqUip

ped
shop

Transmission

AUTOMATIC

TRANSMISSION

IDENTIFICATION

Model
code

JAPAN

AUTOMATIC

I
0
TRANSMISSION

CO
L
TD

MODEL

NO
XOIOO

2412345

Unit
number

NlIlllher

deSignatIOn

2412145

c

l
Sendl

productIOn

number
for
the
monfh

Month
of

production

X
Oct
Y
Nov

Z
Pel

LJ
t

fll
Ure

denotmg

the

yedf
A
D

r

108

1
t
U
UMlt

O
M
t
t
g
p
p
i
Q
e

I
I
Vo
P
a
H

O
@
t

l
t

PA
Rlt
1tO
f
1
l
t

Jo
tEAtt
R

f
VA
fII
Efl
w
UfOR
Wifing
diagram
for
automatic
transmission
mode

fIg
1SO

Specifications

IgnItIon
tlmmg
degree

Dlstnbutor
50
BTDC

POInt

gap

Dwell

angle
mm
m
04510055
0018
to0022

49
to
55

Condenser
capacIty
degrees

J
lF
MIcro
Farad
022

5

Condenser
insulatIon
reSiStance
Mil

Mega
hms

Spark
plug

Cdp
mm
lO
08to09
003IlO0035

Idle
CO

Idle

speed

Manual
transmissIon

Irpm

Irpm
I
5
iO

51800

Automatic
transmission
I
5
iO

51650
10
D

pOSItIOn

Dash

pot

Settmg
englOe
speed
rpm
1
900
10
2

000

Throllle

opener
at
sea

level

Settmg
vacuum

pressure

Manual

tranSffiI
sSlon

Automatic
transmission

Sell

109
englOe
speed
no
load

Servo

diaphragm
full
stroke
rpm

mm

m
500
to

540

19
7
to
213

48010520
18

9
to

20
5

1
650
to
1
850

5
01969
mmHg
10

Hg

mmHg
10

Hg

Thermo

SWitch
Temperature
nses

from
low
to

hIgh
oc
0

F
above
5

41

Flow

gUIde
valve

Operating
pressure
mmHg
10

Hg
10
04

133

Specifications

ENGINE

GENERAL
SPECIFICATION

Cylinder
Jrrangement
4mlme

Displacement
ce
eu
m

71
71
5

Bore
and
stroke
mm
m

73
x
70

2
874
x
2
756

Valve

arrangement
Over
head
vdlve

Fmng
order

I
3
42

Engine
Idle

rpm
800

Manual
transmiSSIOn

650m

D
Automatic

transrmsslon

Compresc
lon
ratio

85

011

pressure
Hol

al
2
000

rpm
kg
em

Ib

sq
m

3
0
to
3
5
43
10
50

TIGHTENING
TORQUE

Uml

kg
m
ft

Ib

Cyhnder
head
bolts

5
5
10
6
0
40
10
43

3
2
to

3
8
2310

28
CQnnedmg
rod

nuts

Flywheel
bolls

651075
471054

Main

bearing
cap
bolts
5
0
10
6

0
36
to

43

4
0
10
4
8
29
10
35

o
4
to
0
6
2
9
1043
Camshaft

gear
bolts

011

pan
bolts

Ot

pump
bolts

1
I
to
I
7
8
0
10
12

o
9
to
I
4
65
to
lO

J5
to
16

108
to
116
011
stramer

bolts

Crank

pulley
bolts

134

1l
J
1

II

i
r

r

Interlock

opening
of

primary
wd
sCl

ondary
throttle
valve
e
I

Throttle

valve

opening
48
mill
Ul

Auto
choke

rac
lldle

sclllllg
dCdrdllLC
A
111m

Ill

Mdlludllfdnsmlsslon

AUttJl1ldtlC
lrdnsmlSS10n
58
0
81

080
to
0
88
0
0315
to

0
0346

107
to
1
17
0
0421
to
0
0461

Vawurn
brcdk

gap
between
hoke
vdlve
and

l
drhurelor

body
8
mill
10

Manudl

transml
SIOn

AutomatlL
trdnMlll
JOn
I
140
to
I

260
0
0449

to

00496

1205
to

I
115

004741000526

Choke

unloader
clearance
C
between

choke
valve
and

l
Jrburetor

body
mm
In

BI
metal

rCSlstan
c
ohms
201
00791

8

6
to
9
0

A
leteralor

pump

I

oJCl
tor

hole

Return

spring

Fuel

pressure
mm

05
00IQ7

78
I

I

018
2
6

Manual
transmISsion

AutomatIc
transmIssIon
WClght
g
mm

Ibfm

kg
em

pSI

kg
lb
28
6
2

29
639

f

x3mplc
15

replC
ts
15
1
00
2
15
mm

0
0846
m

dIameter

J

t

IHI

n

h
1i

1
2
c
L
if

J
l
lQ

w
l
d

J01
i

Specifications

ALTERNATOR

Make
and

type

NonunaJ

output
VA

Pole

Revolution

rpm

No
load
mmunum

revolu
bon

rpm

Output
current
A
V

rpm

Weight
kg
lb

Applied
regulator
HITACHI
LTl3S
13B

12
35

NegatIve
ground

1

000
to
13
500

less
than
I

000

more
than
28

14
2
500

34
7
5

TLI
Z
57

APPROXIMATE
REFILL
CAPACITY

Dter
USA
measure

lmp
measure

Sedan
40

t
10

X
gal
8Y
gal

Fuel

tank

Coupe
38
t
10

gal
8

gal

with
heater
49
t
5
X

qt
4

X

qt

Coohng
system

without
heater
42
t
4

yt

qt
3

X

qt

Od

pan
27
t
2X
ql
2

qt

Od
filter
054
t
IX

pt
I

pi

Transmission
case
Manual
12
t

2X

pt
2X
t

Automatic
55
t

5X

qt
4X

ql

Dlfferenttal
case
o
75

t
I

pI
IX

pI

Steenng

gear
box
024
L

X

pi
X
pt

H3