1969 DATSUN B110 lock

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

Brakes

Remove
the
lock

plate
located

Immediately
III

front
of
the
turn

buckle
remove
the

clip
III

the

passenger
compartment
SIde
and
discon

nect
the
front
cable

I
Spong
balancer

G
Wheel

cyhnder

FIg
136

Measunng
slidIng
resistance
Remove
the
hand
brake
lever
cover
Remove

the
lever

assembly
wIth
the
front
cable
con

nected
toward
the

passenger
compartment

SIde

Remove
the

hanger
strap
installatIOn
bolt

withdraw
the
lock

plate
from
the
axle

hOUSIng

bracket
umt

and
disconnect
the

rear
cable

Loosen
the

hanger
strap
umt
nut
and

separate
the

parts
Into
nut

hanger
strap

washer
and
bracket
DIsconnect
the
wheel

cylinder
lever
SIde
brake
cable

Note
Do
not

remove
the
dust
cover
from

the
cable
but
leave
it
installed
on
the

cable

Inspection

Check
the
cable
for

damage
and
other
defec

tlve
condlttons
and

replace
If

reqUIred

Replace
If

shdIng
part
IS
worn

excessively

1

Hand
brake
It
ver

2
able

J

Clip

4
Lock

plate
5
Turn
hUlkle
Hand
brake

adJU
h
r

6
CabJc

7
abk
8
Han
er

trap

9
Return

sprmg

10
Cable
shank

II
Hand
brake
lever

lover

FIg
137
Hand
brake

construction

78

Brakes

Make

sure
that
the
hand

brake
lever
can
be

operated

smoothly
and
that
the
ratchet

pawl

and
teeth

are
not
worn

unusually
or

damaged

With
the
hand
brake

lever

pulled
depress
the

push
button
and

make
sure
that
the

pawl

disengages
the
teeth
when

the

push
button
IS

depressed
0
1969
to

0
2362
In

completely

Make

sure
that
the
cable
dust

cover
1S
not

damaged
or

warped

FIg
138
Removing
turn

buckle

I
Front
cabl

2
Cover

CI
H
nd
brok
1

Ye

Fig
139

Removing
hand
brake
lever
Reinstallation

Remstall
the
hand
brake
m

reverse

sequence

of
removal

notmg
the

folloWIng
matters

Be
careful
not
to

damage
or
tW1St
the
dust

cover

TIghten
the

hanger

strap
and
the
cable

con

nectmg
nut
to

5
8
to

7
2

ft
lb

When

adJustmg
rear
brake
shoe
clearance
be

sure
to
loosen
the

mner
cable

sufficIently

Grease
the

shdmg
parts
w1th
multI

purpose

grease
MIL
G
2108
or

G10924l

o
Lock

plate

Fig
140

Disconnecting
rear
cable
from
rear

axle

housing

i

O
j

0

I
J

i

Ii

0

j

0

0

V

I
Dust

cover

Hanger
strap
washer

Bracket
I

Fig
141

Hanger
strap
mounted
on
rear

axle

hOUSing

77

Brakes

ADJUSTMENT

Front

Disc
Brake

Ordinarily
adJu
tment
IS
not

requIred

because
clearance
between

pad
and
rotor
IS

adjusted

automattcally
by
elasttclty
of
the

pIston
seal

I
iJ

1

el
i

C
1

FIg
142

AdJustmg
rear
brake
shoe
clearance

F
J

I

1

I

r

BRAKE
MASTER

CYLINDER

I
tI
Rear
Brake

Jack

up
the
vehicle
and
remove
the
wheel

ApplYing
your
hand
and
tool
from
reverse
side

of
the
brake
diSC

ttghten
the
brake

adjuster

wedge
clockWise

up
to
such
an
extent
that
the

brake
shoe
comes
Into
contact

With
the
brake

drum

Return
the

adjuster
wedge
properly
so
that

the
brake
shoe
IS

separated
from
the
brake

drum

slIghtly

Turn
the
brake
drum
and
If
the
brake
shoe

Interferes

the
brake
drum

readjust
In
ad

dition

depress
the
brake

pedal
and
make

sure
that
the
brake

operates
effecttvely
and

correctly

Loosen
the

stopper
up
to
such
extent
that
the

brake

pedal
stopper
IS

separated
from
the

pedal

arm

Brake
Pedal

Height

Measure

height
of
the
brake

pedal
head
from

the
dash

panel
and

adjust
the

adjusting
shim

between
the
brake
master

cylInder
and
dash

panel
so
that

height
IS
5
65
In

05mmlOQ197
nl

THICKNESS
0
8
mm

10
0315
0

16mm

100630
n

11
r

l00

Fig
143
Brake

pedal
adjustment

78

Brakes

Adjusting
shIm
thickness
for
selectIOn

o

0197
In

00315
In

o

0630
In

Note
When

adjusting
be
sure
to
use
ad

Jusbng
sh1ms

having
same
th1ckness
for

upper
and
lower

brake
master

cylinder

IOstallahon
bolts

Upon

completIOn
of

adjusting
shIm

adjust

ment

tighten
the

stopper
down
to
such

an
ex

tent
that

heIght
of
the

pedal
head
IS

5
57

pO
0787

In
and

tighten
the
lock
nut

becurely

Free
travel
of

the
brake

pedal
IS
0
197
to

0591
tn
and
the

stroke
IS
4

72
In

Hand

Brake

Turn

the

turn
buckle

properly
and

adjust

hand

brake
lever

operatmg
stroke

correctly
so

that

operatmg
stroke
IS
3

091
m

16
notches
at

operatIng
force

of
243
to
331
Ib

Upon
com

pletIOn
of

adjustment
be
sure

to

tIghten
the

lock
nut

Upon

completIOn
of
the

adjustment
release

the
hand

brake
lever
and
make

sure
that
the

rear
wheels

are
not

braked

Normal
btroke

3091
In
6

notches

Fig
144

AdJusting
turn
buckle
LImIted
stroke

535
tn
10
notches

The
term
Stroke

means

heIght
from
the

standard

posItIon
8
7
In
above

the
hand
brake

lever
fulcrum

Note

Readjust
hand
brake

stroke
when
it

reaches

the
hmited
stroke
5

35
in

10

notches

BLEEDING

HYDRAULIC

SYSTEM

BleedIng
the

hydrauhc
brake

system
deserves

much
attentIOn

as
It

IS
an
e
senttal
factor
for

regular
servICe
brake

operatIon

As
a
matter

of
fact

durmg
the
brake

serVice

air
IS

lIkely
to

creep
Into
the
CirCUIt

WIth
the

result
that
the
flUId
actIon

IS
altered

and
the

brake

pedal
becomes

spongy
at
the

travel
end

Bleedmg
should
be
carned
out
at
first

WIth

the
master

cylmder
then
from
the

longest

lIne
from
the
master

cylmder
and
then
fimsh

up
With
the
shortest

Note

Always
clear

away
any
dirt
around

master

cylinder
reservoir

cover
before

removing
cover
for

any
reason
Never

depress
pedal
while

brake
drums

are

removed
unless
bleeder

valve
IS

open

Top
up
the

reservOIr
master

cyltnder
With

flUId
of
the

recommended

type

Fig
145

Connecting
Vinyl
hose

to
air
bleeder
rear

79