lock DATSUN B110 1969 Service User Guide

BDgiDe

Fig
49
Valve
installatIon

STl
303001

EM156

Fig
50
Piston

pin
installation

FIg
51
Piston
and

connecting
rod

assembly

Assemble
the

parts
In

order
valve

sprmg

spnng
retamer
valve
collet
and
val

ve
rocker

gUIde

28
Note
Make
sure
that
the
valve
face
is

clear
from

foreign
matters

Piston
and

Connecting
Rod

Assemble

pIston
piston
pm
and

connecting

rod
assorted

accordmg
to

cyhnder
number
for

every
cylInder

Notes
a
P1ston

pin
is

press
fitted
to

the

connectmg
rod

tightly
and

fitting
force
is

from
1
to

3
tons
When

fitting
piston
pin

speCIal
tool
must

be
used

When

pressmg
the

piston
pin
into
the

con

necting
rod

apply
engine
oil
to
the

pin

and
the
small
end
of
the

connecting
rod

b

Arrange
the

connecting
rod
so
that
the

oil

Jet
of
the

connecting
rod

large
end
is

directed
toward
the

right
side
of
the

cylinder
block

InstallIng
piston
rmgs

Install
the

top
and
second

rings
In

nght

pOSItIOns
so
that
the
marks
are
faced

upward

FIX

bearings
on
the

connecting
rod
and
the

connecting
rod

cap

Note
Clean
the
back
side
of
the

bearmg

carefully

Engine

Set
the

cyhnder
block
on
the

workmg
stand

WIth
the

engine
bottom
faced

upSIde

Install
the
valve
hfters
Install
the
camshaft

and
retain

by
the
camshaft
locate

plate

Locate

plate
tightemng
torque
IS
2
9
to
3
6

ft
lb

Fig
52

Installing
camshaft
locate

plate

Bogine

Note

Set
the

locate

plate
so
as
the

LOWER

mark

comes
to

the

engine
bot

tom
side

Set
the

maIn

bearIngR
on
theIr

posItIOns
on

the

cylinder
block

Notes
a

The
center

bearmg
No
3

bearmg
is

a

flanged
type
for
thrust
force

b
Two

lOner

bearmgs
No
2
and
No
4

are

of
the
same

type

c
The
front

bearmg
No
1
IS
the
same

type
as
the

rear

bearmg
No
5

d

All

bearings
except
for

No
I

bearing

are

interchangeable
between

upper
and

lower

bearings

Apply
engIne
OIl
to
the

mam

bearIng
surfaces

on

both
sIdes
of
the

cyltnder
block
and

cap

Fig
53
Mam

bearing
caps

Fig
54
Crankshaft
end

play
check
Install
the

crankshaft

Install
the

mam

bearmg
cap
and

tighten
the

bolts
with

specified
torque

Tlghtemng
torque

36
to

43
ft
Ib

Notes
a

Arrange
the

parts
so
that
the

arrow
mark
on

the
bearing
cap
IS
faced

toward

the
front
of
the

engine

b
Prior
to

tightening
the

bearing
cap

bolts

place
the

bearing
cap
at
a

proper

posItIon

by
shlftmg
the

crankshaft
in
the

axial

direction

c

Tighten
the

bearmg

cap
bolts

gradually

in

separatmg
two
to

three

stages
and
out

wardly
from
the

center

bearing

d
After

securing
the

bearing
cap
bolts

ascertam

that
the
crankshaft

can
be

easily
rotated

Make
sure
that
the
crankshaft

end

play
IS

correct

Crankshaft
end

play

o
0020
to

0
0059
In

I
nstalI
the

rear
011
seal

Install
the

flywheel

securely
USIng
the

lock

washers
and

tighten
the
bolts
with

specIfied

torque

Tlghtemng
torque

47
to
54

ft
Ib

Rotate
the

engine
a

quarter
turn

and
mstall

the

piston
rod

assembly

Notes

a
Insert
the

pistons
in
the

corresponding

cyhnders

b

Apply
engine
oil
to

parts
as

required

c

Arrange

pistons
so

that
the
F
mark

on
the

piston
IS
faced
to

the
front
of
the

engine

d
Install

piston
rings
at
18
Y
to

each
other

avoIdIng
to
fit

them
In
the

thrust
and

pIston

pIn
aXial

directIOns

27

BDgiDe

Install
the

new
011
seal
to
the
front
cover
The

front

cover
011
seal
should
be

replaced
when

the
front

cover
IS
disassembled

Install
the
front

cover

applYing
the

seahng

agent
to
both
surfaces
of
the

gasket

Tlghtemng
torque

36
to

5
1

ft
lb

Install
the
ot
strainer
and
the
011

pan
uSing

the

gasket

Apply
seahng
agent
on
both
surfaces
of
the

gasket
especIally
on
the
front
and
rear

por

tlOns
of
the
011

pan

011

pan
tlghtemng
torque

2
9
to
4
3
ft
lb

Invert
the

engine
and
Install
the

cyhnder

head

assembly
and

gasket

Note

Apply
sealing
agent
overall
the

cylinder
block
surface
Place
the

gasket

on
It

and

apply
sealing

agent
to
the

gasket
top

Tighten
the

cylinder
head
bolts
to
the

peclfied
torque

Cylmder

bloLk

Side

Stecl

heet

Sealmg
agent
not

required

Cylinder

head

Side

Jomt

sheet

Remarks
Install

WIthout

applymg
sealing
agent

Be

careful
not
to

damage
the

push
rod
Side

because
thIS
SIde
has

prevIOusly
been

provIded

WIth

sealing
agent

J

30
v
o
The

cyhnder
head
uses
two

types
of
in

stallatIOn
bolt
one
IS
for
the
center

nght
SIde

and
the
other
IS
for
all
other

posItIOns
The

bolt
for
the
center

nght
Side
has

a
I

mark

on
ItS
head

L

1

Bolt
number
hh
nlltilatlOn
rJ

Dlaml
tl
f

j
031111003189
T

T
1M

E

u

pt
lor

CD

03492
to

0
3555
ot
rhJ

FIg
65
Head
bolt
segment

Fig
66
Tlghtenmg

sequence

O

rmg

4

ItI
CYlmder
head

Cylinder
h
ad

gasket

Cylinder
block

o

rtng
To
be
mserted

mto
hole

m

cylmder
block

llectrical

Spt

When

Harting
lWltch

I

IgllltlUn
iwltch

FJuhy

rctuflung

Repldce

set
10
OFf

the
slJrl

motor

do
nut
MJgnclK
Wltdl
Seiad

contJr
l

Repldcc

IIlg

I

op

Shorted
1

011

Replace

Faulty
plunger

slidmg

Replace

StJflillg
motOr

Pillion
does
not

dlsengJge
from
the

Repair
or

replace

nng
gedr

smoothly

Pinion

sphne
dot
110t

disengage

Repan
or

replJce

moothly

SCl7Cd

pinIOn
metal

Replace

REGULATOR

Description

The

regulator
basically
consists
of
a

voltage

regulator
and
a

charge
relay
The

voltage

regulator
has
two
sets

of
contact

poInts
a

lower
set

and

upper
set
to

control
alternator

voltage
An

at
mature

plate
placed
between

the
two
sets
of
contacts

moves

upward
or

downward
or

Vibrates
The
lower
contacts

when

clo
ed

complete
the
field
CIrCUIt

dIrect

to

glOund
and
the

upper
contacts
when

closed

complete
the
field
CIrCUIt
to

ground

through
a
resIstam
e

field
COl

and

produces

alternator

output

The

charge
lelay
IS
SimIlar
In

constructIOn
to

the

voltage
regulator

When
the

upper
contacts

are
closed

IgnitIOn

warnIng
lamp
goes
on

As
for
the

constructIOn
the

voltage
regulator

IS

very
SImIlar
to
the

charge

relay
as
shown
In

Figure
78
I

POlnlsap

2
lower

nt
CI

3

Arm2fu1C

4

COfe

ap

5

Yokeg
lp

6

Connecting
pnn
t

T
Yolce

8

AdJu
fln

rcw

9
Lock
nul
Crew

13

4mmlOlli15
nldll

SCrew

14
RlaCI
I

15

Upper
Rlact

a
COlUlruci
o
o

voltage
ulato

O
0
1

EEOSJ
I
Point

gap

2
Char

Clay
nl3el

3

ConMctmg
pun

4

Armature
nl
daa

5
Core

ap
re

6
Yoke

Jap
14
4
mm
0
1575
n
dla

7
Yoke

rew

8

AdJu
llng
Cre
IS
nfaC

t
e1

9
Voila

ere
ulal0t

l
ontal
1

b

COfUtruclton

of

cha
rt
ay

FIg
n
View
of

removing
cover

FIg
78
Structural

view

81

Fuel

Sptem

The

power
valve
mechanIsm

IS
of
a
vacuum

actuated
boost

type
and

Improves
hIgh
speed

drivIng

The
throttle

opener
control

system
Incor

porates
a
servo

diaphragm
The

servo

dIaphragm
helps
open
the
throttle
valve
at
a

decreasIng
speed
so
as
to
reduce
the
emISSIOn

of

hydrocarbons
to
a
minImum

An
antI

dlesehng
olen01d
IS
used
as

a
means

of

preventIng
dlesehng
When
the

IgnItIOn

key
IS
turned
ofT
the
fuel

passage
Involved
In

the
slow

system
IS
closed
and
the
fuel

supply

IS
shut
down

completely

In
the
chok
mechanIsm
an
electric

automatIc
choke
IS
used
to

automatically
con

trol
the
choke
valve

operatIOn
durIng
the

war

m

up
of
the

engIne

The
carburetor
for
automatic
transmiSSIOn
IS

eqUIpped
WIth
so
called
dash

pot
that
IS
It

makes
smooth

deceleratIng
WIthout

engIne

stall
at

any
operatIng
conditIOn

These
carburetors

are

qUIte
SImIlar
In

ap

pearance
as

explaIned
above

except
the
dash

pot
for
the
automatIc
transmISSion
model

Adjustment

Idhng
Adjustment

Idle
mixture

adjustment
requIres
the
use

of
a

CO
meter
When

prepatlng
to

adjust
Idle
mIxture
It
IS
essentIal
to
have
the
meter

thoroughly
warmed
and
cahbrated

Warm

up
the

engIne
suffiCiently

ContInue

engme
operatIOn
for

one
mmute
un

der

ldhng
speed

Adjust
throttle

adjustIng
screw
so
that

engme

speed
IS
800

rpm
m
N

pos1tIon
for

automatic
transmiSSIOn

Check

IgmtlOn
tl
If

necessary

adjust
It
to
the

speCificatIOns

IgnItIOn
tImlo
800
rpm

Adjust
Idle

adJustmg
screw
so
that
CO

percen

tage
IS
1

5
0
50
at
800
ns

a
On
automatIc

transmiSSIOn

eqUipped
model
check
must
be

done
In
the
D

poSItIon
Be
sure
to

apply

parkmg
brake
and
to
lock
both
front
and
rear

wheels
With
wheel
chocks

b
Hold
brake

pedal
while

steppIng
down
on

accelerator

pedal
OtherWise
car
Will
rush
out

dangerously

On

automatIc
transmiSSIOn

eqUIpped
model

make

sure
that
the

adjustment
has
been
made

With
the
selector
lever
In
N

posItIon

And
then
check
the

specificatIOns
With
the

lever
In
D

pOSitIOn
Insure
that
CO

percent

and
Idle

speed
are
as
follows

Idle

rpm
650

for
Manual
transmISSion

for
Automatic
transmISSion

Fig
91
External
view
of
carburetor

3

Fuel

Sptem

ted

on
the
car
If
the
throttle
valve
fails
to

fully
open
the
unIoader
becomes

inoperative
resulting
in

poor
ac

celleration
after
the

engine
is

started
Note
Use
an
accurate

measuring
in

strument
such
as
a
wheatstone

bridge

B1
metal

cover

settmg

BL
metal

Settmg

Mea
urement
of
bl
metal
heater
resistance

Install
the
bl
metal

cover
m

place
on
the
car

buretor
Make
sure
that
the
resIstance
across

the
termmal
and
the
carburetor

body
IS
m
the

range
from

8
6
to
0
0
ohms
Measure
the

resIstance
without
electnc
current

through

the
heater
and
at
about
70
F
Postllon
the
bl
metal

cover
until
the
mdex

mark
1S

altgned
at
the
middle

pomt
of
the
scale

26
mm
I
024

m
dlJ

30
m
1
181
In
dlJ

Connectml
rod

Secondary
COnnCl

lms

lever

Throltle
lever
4

Secondary
throttle

vaJve

5
Pnmary
throttle
valve

6

Throttle
chamber

Fig
98
Settmg
bl
metal
cover

Fig
99
AdJustmg
mterlock

opening
Pnmary
and
secon

dary
throttle
valves

Fig
100

AdJustmg
dash

pot

17

ruel
S
stem

Note
When
somewhat
over
choked
set

bl
metal

cover
after

turning
it
clockwise

slightly

Adjustment
oflnterlock
Opelntng
of

Pnmary
and

Secondary
Throttle
Values

Open
the

pnmary
Side
throttle

valve
48
from

the

fully
closed

positIOn
and
measure

clearance
GIn
between
the
throttle
valve
and

throttle
chamber
mSlde
wall
as
shown
m

Figure
99

GIn

0
228
m

WIthout

dlsturbmg
the
above

settmg
bend

connectmg
rod
as

necessary
so
that

secoridary

throttle
valve
IS
about
to

open
Upon
com

pletIOn
of
the

adjustment
make

sure
that
the

hnk

system
operates
smoothly

Dash

Pot

Adjustment
AutomatIC
Trans

mlsszon
car

only

It
IS

necessary
that
the

Idhng
speed
of

engme

and

mIxture
have
been
well

turned
up
and

engme
IS
suffiC1
n

y
warm

1

Turn
throttle

valve

by
hand
and
read

engme

speed
when
the
da
h

pot
Just
touches
the

stop

per
lever

Adjust
the

pOSitIOn
of
the
dash

pot
by
turnmg

the
nut
until
the

engine

speed
IS
In

the

range

from
1

900
to
2
000

rpm

Make

sure
that
the

engine
speed
IS

smoothly

leduced
from

3
000
to
1
000

rpm
within
a
few

econds

Removal

Remove
the

aIr
cleaner

DIsconnect
the
fuel
line
vacuum
line

automatic
choke
harness
and
antl

dlesehng

solenOId
harness
from
carburetor

Remove
the
throttle
lever

Remove
four
nuts
and
washers

retaining
the

carburetor
to
the
mamfold
If

necessary

LIft
the
carburetor
and
remove
from
the

mamfold

Remove
and
dlscard
the

gasketcused
between

the
carburetor
and
mamfold

8
Disassembly

The
main

Jets
and
needle
valves
on
both

primary
and

secondary
Sides

are
accessible

from
outSIde
of
the
carburetor
for
disassem

bly
Remove
throttle
return

sprmg

Remove

pump
level
shaft
take
out

pump

lever
and

pump
connectmg
rod

Remove
rubber

pipe
from
choke

piston

Loosen
off
bolts

secutlng
servo

diaphragm
In

positIOn
take
out

dIaphragm

Back
off
total
of
five
bolts
which
hold
choke
In

posItion
and

remove
rods
of
starter

system

take
out
choke
chamber

In

removmg
chamber

exercise
care
to
aVOId

damaging
float

The

pnmary
and

secondary
emulsIOn
tubes

can
be
disassembled

by
removmg
the

main
air

bleeds

on
the
indiVidual
SIdes

UII
ij

Fig
101

Removmg
choke
chamber
and
servo

diaphragm

o

llQt

o

Fig
102
Removmg
emulsion
tubes

Fuel

Sptem

In

removIng
Injector

weight
piston
return

sptlng
and
ball

care
should
be
exercIsed
to

prevent
them
from

beIng
scattered
and
lost

To

check
the

accelerator

pump
the

pump

cover
IS

removed
Be
careful
not
to
lose
the

return

spring
and

mlet
valve

bal

prOVided

at

the
lower

part
of
the

piston

dUring

dIsassembly

Removal
of
bl
metal

cover
IS
a

sImple
matter

of

removmg
three
set
screws

When

It

becomes

necessary
to
take
out
float

pull
shaft

from
float

Note

Under
no

C1rcumstances
should

bl
metaI

be
moved
with

excessive
force

Since
this

may
cause

a

permanent
set
In

b1
metal

making
starting
d1fficuIt

The

thlottle
chamber

can
be
detached
from

the

float
hamber

by
removmg
three
set

screws

Fig
103

Disassembling
accelerator

pump
and
bl
metal

cover

1

EC013

Fig
104

RemOVing
throttle
chamber
Do
not

remove
antl

dlesehng
solenOId

unless

It
IS

necessary
to

change

It
IS

preferable
to

leave
throttle
valve
mtact

unless

otherWise

reqUIred
If
throttle
valve

must
be

dIsassembled
to

remedy
a

defect

secondary
throttle
valve

must
be
Installed

wIth

gap
to
be
free

OtherWise
stable

Idlmg
and
slow

speed
per

formance
Will
not

be
obtamed

In

dlsassembhng
and

reassembhng
in

terlockIng
hnks
take

care
so
that
each

lInkage
has

a
smooth
action
and

that
It
IS
not

fitted
m

any
forced

posltton

Cleaning
and

Inspection

Dirt

gum
water

or
carbon

contammatIon
m

or
on
the
exterior

movmg
parts
of
carburetor

are
often

responsible
for

unsattsfactory

perfor

mance

For
thiS

reason

effiCient
carbureton

depends

upon
careful

cleamng
and

InspectIOn
whtle

servlcmg

Blow
all

passages
and

castmgs
wIth

com

pressed
aIr
and
blow
off

all

parts
unttl

dry

Note
Do
not

pass
drills

or
wires

through

calibrated

jets
or

passages
as
this

may

enlarge
orifice
and

seriously
affect
car

buretor

calibration

Check
all

parts
for
wear

Replace
worn

part

EspeCially
the

followmg
matters
should

he

noted

I

1
Q

o

Fig
105

RemOVing
throttle
valve

18

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

Cooling

Sptem

Fig
106
Coolmg
system

C0026

FIg
107
Water

pump
and
front
cover

FIg
1I1S
Water

pump
removal

DESCRIPTION
radiator
w1th

hIgh
coohng
efficiency
and
of

a

pellet
type
thermostat

The

coohng
system
IS
of

a
closed

pressure
type

With

hIgh
coolmg
capablhty
Coohng
water
WATER
PUMP

flowmg
through
resIstance
free
water

passages
m
the

cyhnder
head
and

cyhnder
The
water

pump
IS
a

centrifugal
type
water

block
IS
mamtamed
at

adequate
temperature

pum
WIth
an

alumlpum
d1e
cast

pump
body

range
at

allo
tlmes

by
means
of

an

ample
T
he

olute
chamber
IS
bUIlt
mto
the
front

capacIty
water

pump
of

a

corrugated
fin

type
cover

assembly
and
a

high
pressure

seahng

84