engine DATSUN B110 1969 Service Owner's Manual

Fuel

SJstem

Check
float
needle
and
seat
for

wear

Replace

the

assembly
If

worn

Check
the
throttle
and
choke
bores
In
throttle

body
and

cover

castIng
for
wear
or
out

of
round

Inspect
Idle

adjustIng
needles
for
burrs

or

ndges
Replace
as

reqUIred

Inspect
gaskets
to

ensure
that

they
do
not

ap

pear
hard

or
bnttle
and
that
the

edges
are
not

turned

or
dIstorted
If

any
such
condItIOn
IS

detected

they
must
be

replaced

Check
filter
secreen
screen
for

cloggIng
Clean

and
If
It
IS
dIstorted
or
remaInS

plugged

replace

Check
cluster
for
loose

or
worn

parts
If

damage
or
Ioosene
s
eXists

replace
cluster

assembly

Check
the

hnkage
for

operatIng
condItion

Inspect
the

operatIOn
of

acceleratIng
pump

Pour

gasohne
Into
the
float
chamber
and

operate
the
throttle
hver
Check
conditIOn
of

gasohne
InjectIOn
from
the

acceleratIng
nozzle

Assembly
and
Installation

Assemble
and
Install
the
carburetor
In

I

everse

sequence
of

dIsassembly
and
removal
Replace
the

gaskets
If

necessary

When

dlsassembhng
and

reassembhng
the
In

terlock
hnk
and
related

components
be

careful
not
to

bend
or
deform
the

components

Reassembly
carefully
and

correctly
so
that
all

Interlock
hnks

operate
smoothly

Jets

The
carburetor

performance
depends
on

Jets

and

aIr
bleed
and
the
vehicle
emISSIOns

largely
depends
on
the
carburetor

performan

ce
That

IS

why
these

components
are

manufactured
WIth
utmost
care

To
clean
them
use

gasohne
and
blow
aIr
on

them

ChangIng
Jet
or
air

bleed
sIze

may

cause
III
vehICle
emIssIon
So

they
should
not

be

changed
theIr
numbers

Trouble

Shootmg

In
the

follOWIng
table
the

symptom
and

causes
of
carburetor
troubles
and
remedIes
for

them

are
hsted
to
faclhtate

qUIck
repaIrs

There

are
vanous
causes
of

engIne
trouble
It

sometImes

happens
that
the

completely
effec

tlve
carburetor
seems

apparently
to
have

some
troubles
when
electnc

systern
IS
defec

tIve
Therefore
whenever
the

engIne
has

troubles
electnc

system
must
be
checked
first

before

adjusting
the
carburetor

TROUBLE
SHOOTING

Troubles
POSSible
causes

Remedlc

Overflow
Dirt

accumulated
on
needle
valve
Clean
needle
valve

Fuel

pump
pressure
100

hIgh
RCpJlf

pump

Needle

valve
seat

Improper

Lap
or

replai
e

ExceSSIve
fuel

Fuel
overflows
See
above

I
l

onsumptlon

Each

mam
aIr
bleed

clogged
Clean

80

ruel

Sptem

Troubles

Power

shortage

Improper
IdlIng

Rough
engIne
Idle

or

eogme
stop

Engme
Idle
too
fast
Possible
causes

Gauge
plate
adjustment
mcorrect

Choke
valve
does
not

open

Outlet
valve
seat

of
accelerator

pump
1m

proper

Lmked

openmg
of

secondary
throttle
valve

too

early

each
mam

Jet
clogged

EaLh
throttle
valve
does
not

fully
open

Fuel

pump
operated
Improperly

uel
stramer

clogged

Vacuum

Jet
clogged

Power
vdlve

operated
Improperly

Slow

Jel
dugged

Fat
h
thronle
valve
does
not
close

Secondary
throttle
valve

operated
Im

properly

Eal
h
throttle
valve
shaft
wear

Packing
between
mamfold
and
carburetor

defective

Fuel
overflows

Incorrect
carburetor

adjustment
Idle

speed

Idle
miXture
choke

settmg

Incorrect
baSIC

1
OIt100

tunmg

Incorrect

automatic
temperature
control
air

cleaner

Defect
or
malfunction

of

Igmtlon
system

spark
plug
lugh
tenSion

cable
breaker

JX
Int

Ignition
COIl
etc

Trouble
In
throttle
lInk
and
cable

Incorred
throttle

opener
adjustment

Trouble
In

PCV
valve

Trouble
In
automatic

choke

Defect
or

malfunctIOn
of

Igmhon
s
stem

spark
plug
hIgh
tenSion
cable
breaker

pomt
Ignition
Call
elc
Remedies

Correct

adjustment

Adjust

Lap
or

replace

Adlust

Clean

Adjust

Repair

Clean

Clean

Adlust

Clean

Adlusl

Overhaul
and
dedn

Replace

ReplaLe
tlghtenlllg

See
the
fust
Item

Adjust
Idle

speed
mixture
dnd

tUllIng

Adjust
19mtlon
timing

Adjust
automatlL

temperature
control
air

cleaner

Adjust
or

replaLe
IgllltIun
system

Chel
k
throttle
hnk
and
Lable

Adjust
throttle

opener

Replace
PCV
vJlve

Adjust
auotmJtIL
l
hoke

Adjust
or

replac
e

IgllltIun
system

J

81

Fuel
I
em

Troubles

Engine
hesitatIOn

Car
knock
when

coastIng

EnglOe
does
not

start

82
POSSIble
causes

Eal
h
mam

Jet
slow

Jet
clogged

By

pdss
hole
die

pdssage
dogged

Emulsion
lube

dogged

Idhng
adlostment
mcorrect

Secondary
throttle
valve

operated
1m

properly

Incorrect
throttle

opener
adjustment

Trouble
m
PCV

valve

Defect
or

malfunction
of

Igmtlon
system

spark
plog
ugh
tenSIon
cable
breaker

pomt
IgmtIon
cod

etc

Fuel
overflows

No
fuel

IdlIng
adjustment
mearrect

Fast
Idle

adjustment
mcareeet

Damaged
antl
dlesehng
solenoId

BI
metal
rod
m

contact
WIth
bl
metal
case
RemedIes

Clean

Cledn

lube

lean

Correct

adjustment

Overhaul
and
clean

AdjUstlhroltle
opener

Replace
PCV
valve

Adjust
or

replace
IgJuhan
system

See
the
first
Item

Check

pump
fuel

pIpe
and
needle
valve

Correct

adjustment

Correct

adjustment

Replace

Adlust

Transmission

Worn

gears
shaft
and
or

heanng
Repl
ll
c

In
ufficlcnt

operatmg
stroke
due
to
worn
or
loose

shdmg

pdll
Repair
or

replal
c

Defective
or

damaged

synchronIzer
Replace

Gear

slips
out

of
mesh

In
the
most
cases
thiS
trouble
occurs
when
the
Interlock

plunger
check
ball
and
or

spnng
IS
worn
or
weakened
or

when
the
control

system
IS
defectIve
In
thiS
Cd
the
trouble
cannot
be

corrected

by
repldtlllg
gt
drs

and
therefore

trouble
shootmg
must
be

earned
out

carefully
It
should
also
be
noted
that

gear
slips
out
of
mesh
due
to
vlbralIon

generated
by
weakened
front
and
rear

engme
mounts

Worn
mterlock

plunger
Replal
c

Worn
check
hall
and
or

weakened
or
broken

sprmg
Replal
c

Worn
fork
rod
ball

groove
RepI

H
e

Worn
or

damaged
beanng
Repldce

Worn
or

damaged
gear
Repldl
c

NOise

When
nOIse

occurs
unoer
engine
Idling
and

stops
whde
the
clutch
IS

dlseng
lged
or
when
nOI
Olcurs
while

shlftmg

gears
It

may

Judged
that
the
nOIse

IS
from
the
tranSmll
lSIUn

Ino

ufllclenl
or

1mproper
lubncant
Add
od
or

replace
With

deSignated

oIl

Ollleaklllg
due
to
defectIve
011
seal
md

gasket
clogged
breather
etc
Clean
or

replace

Worn
beanng

High
hummmg
occurs
at
a

high
speed
Replace

Damaged
beanng
Cychc
knockmg
sound
occurs
alllo
at
a
low

speed
Replace

Worn
each

sphne
Replace

Worn
each

hushmg
Replace

108

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

II
II
II
II
Oil
pressure
and
ignition
warning
lamps

condition

Oil
pressure
warn

ing
lamp

The
amp
does
not

hght
when
the

19I1ItlOn
sWItch
IS

set
to
ON

II
I
Ptobable
cause

Blown
off
fuse
or
faulty
contact

Broken
lamp
bulb
filament
or

faulty
cable
contact

Defective
oil
pressure
swltch

The
lamp
does
not
Oil
pressure
IS
toO
loW

go
out
wlule
the

engtne
IS
being

operated
Lack
of
engine
oil

Defective
Oil
pressure
sWitch

Il
MethOd
of

tnSpeCtlOn

Check
the
fuse
for
fusing
and

faulty
contact

The
warntng
lamP
does
not
bght

when
oil
pressure
sWitch
yelloW
I

black
cable
15
grounded

The
warntng
lamp
bghts
through

the
above
tnspectlOn

inspect
the
engine
ou
pressure

system
Check
011
level

ConttnUlty
eXists
on
the
oil
pres

sure
sWltch
when
the
engine
IS

belng
operated

o

a
t
a

CorrectIVe
action

Replace
after
COffee

tlng
the
fuse
the

cause
lf
fused

Check
the
hght
bulb

for
burnt
out
fila

ment
and
replace
as

reqUIred
Replace
the
011
pres

Sure
sWitch

Add
oil

Replace
the
01
pres

sure
sWitch

Specifications

SERVICE
DATA

Valve
clearJnce

IHot
mm
In

mm
In

mm
In

kg
Ib
Intdke

exhaust

Fan
belt
tensIOn

Tlghtemng
torque
Cold

Cyhnder
head

bolts
kg
m
ft
Ib

1st
turn

2nd
turn

Re

l1ghtemng
torque
Hot

Mamfold
nuts

Carburetor

nuts

Spark

plugs

ad

capacIty
of

engine
including
od
filter

Maximum
L
US

gal
Imp
gal

L

US

gal
Imp
gal
Mmlmum

Water

capacity
of
coohng

system

Wllhout
heater
L

US

gal
Imp
gal

W
th
heater
L

US

gal
Imp
gal

CompressIOn
pressure
at

rpm
kg
cm2

PSI

Battery
specific
gravity

FrigId
climates

Tropical
clImates

Other
climates

132
Permlsslble
value

rlver
I
22

Over
118

Over
I
20
035
0014

035
0014

10
to
15
0
394
to
0
591

10
22

40
to
4
5
29
to
33

5
5
to
6
0
40
to
43

60
to

6
5
43
to
47

09toI4
65toI0

o
5
to
I
0
3
6
to
7
2

I
5
to
2
0
II
to

14

33
l

2
3

10

42
Ji

49
1
4
IJi

125
to
145
78
to
206
350

Fully
charged
value

at
20
C
68
F

128

123

126

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