ESP DATSUN B110 1973 Service Owner's Guide

FUEl

SYSTEM

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w

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1

1
1
t

2

3

4

5

6

7

8

9

10

tt

12
Hi
metal

Heater

Bi
metal

cover

Fast
idle

earn

Bi

metal

Bi

metal

index
mark

Choke

shaft
lever

Choke
valve

Unloader

tang

Vacuum

diaphragm

Throttle
valve

Fast
idle

adjusting
screw
j

@

Fig
EP
21

Construction

of
electric

automatic
choke

Bi

metal
and
heater

Electric
current
flows

through
the
heater

as
the

engine

starts
and
warms
bi

metal
See

Figure
EF
22
The

deflection
of
bi
metal
is
transmitted
to
the

choke
valve

through
the
choke
valve
lever

Ignition
switch
Fuse

Alternator

T

o

o
Auto
choke
relay

Auto

choke
heater

Fig
EF
22
Schematic

drawing
of
electric

automatic
choke
heater

Fast

idle
C3m

The
fast
idle
cam
determines
the

opening
of
throttle

valve

so
as

to
obtain

proper
amount
of
mixture

corresponding
to
the

opening
of
the

choke
valve
which

depends

upon
the
warmed

up
condition
of
the

enigne
Fast
idle

adjusting
screw

This

screw

adjusts
the

opening
of

the
throttle
valve

by

fast
idle

cam

Unloader

When

accelerating
the

car

during
the
warm

up
period

that

is
before
the
choke
valve
does
not

sufficiently

open
this
unloader
makes
the

choke
valve

open
to
a

certain
extent

so
as
to
obtain
an

adequate
air

fuel

mixture

Vacuum

diaphragm

The

moment
when

engine
starts
this

diaphragm
forces

choke
valve

open
to
the

predetermined
extent
so
as

to

provide
necessary
amount
of
air

fuel
mixture

Bi

metaI
index
mark

The
bi

metal
index
mark

is
used
for

setting
the

moment
of
the

bi
metal
which
controls
the

mixing

ratio

required
for

starting
the

engine

EF
13

ENGINE

Y
Q

0

Fig
EF
34

Disassembling
accelerator

pump
and

hi
metal
cover

1

EC013

Fig
EF
35

Removing
throttle
chamber

9

The
throttle
chamber
can
be
detached
from
the
float

chamber

by
removing
three
set
screws

Do
not
remove
anti

dieseling
solenoid
unless
it
is

necessary
to

change
If

necessary
refer
to
the
item
of

Anti

dieseling
solenoid

page
EF

12

10
It
is

preferable
to
leave

throttle
valve

intact
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

idling
and
slow

speed
performance

will
not
be

obtained
I

o

rJ

01

o

o

Fig
EF
36

Removing
throttle
valve

II
In

disassembling
and

reassembling

interlocking

links
take

care
so
that
each

linkage
has
a
smooth
action

and
that

it
is
not
fitted
in

any
forced

position

Cleaning
and

inspection

Dirt

gum
water
or
carbon
contamination
in
or
on
the

exterior

moving
parts
of
carburetor
are
often

responsible

for

unsatisfactory
performance

For
this
reason
efficient
carburetion

depends
upon

careful

cleaning
and

inspection
while

servicing

1
Blow

aU

passages
and

castings
with

compressed
air

and

blow
off
all

parts
until

dry

Note
Do
not

pass
drills
or
wires

through
calibrated

jets

or

pssages
as

this

may
enlarge
orifice
and

seriously

affect
carburetor
calibration

2
Check
all

parts
for
wear

Replace
worn

part
Especial

ly
the

following
matters
should
be
noted

I
Check
float
needle
and
seat
for
wear

Replace
the

assembly
if
worn

2

Check
the
throttle
and

choke
bores
in

throttle

body

and

cover

casting
for
wear
or

out
of
round

3

Inspect
idle

adjusting
needles
fur
burrs
or

ridges

Replace
as

required

3

Inspect
gaskets
to
ensure
that

they
do
not

appear

hard
or

brittle
and
that
the

edges
are
not
turned
or

distorted
If

any
such
condition
is

detected

they
must
be

replaced

4

Check
fIlter
screen
for

clogging
Clean
and
if
it
is

distorted
or
remains

plugged
replace

EF
20

ENGINE
REMOVAL
INSTAllATION

ENGINE
MOUNTING

CONTENTS

FRONT
ENGINE
MOUNTING

Removal

Reinstallation
ER
1

ER
1

ER
2
REAR
ENGINE

MOUNTING

Removal

Reinstallation
ER
2

ER
2

ER
3

r

0

iQ
@

q

Fig
ER
1
Structural
view

of
engine
mounting

This

engine
adopts
the

same

engine

mounting
method

as
AIO
The

strength
of
overall

engine

mounting
construc

tion
however
has

been
increased
in

response
to
the

increased

engine
weight
and

engine

output
Consequently

the

parts
used
for

engine
mounting
arc

not
inter

changeable
with
those
for
the

A
10

although
their

shapes

and
constructions
are

similar
FRONT
ENGINE

MOUNTING

Removal

I

Suspend
the

engine
with
wire

or
chain

2

Loosen
the

front

engine
mounting
insulator

upper

nuts
both
sides

ER

1

CLUTCH

J

I

I
Withdrawal

lever

2
Return

spring

I
31
Release

bearing
ST20610000

iwn

rm
hj

sf

W

Fig
CL
13

Installing
release
mechanism

REINSTALLATION

L
Clean
the

clutch

pilot
bushing
and

fill
it
with

multi

purpose
grease

2
Install
the
disc

assembly
and

clutch

assembly
on
the

flywheel
by
the
use

of
a

special
tool
clutch

aligning
bar

ST206
I
0000
12
I
Flywheel

Clutch

assembly

131
Clutch
disc

assembly

Fig
CL
14

Installing
disc
and
clutch

assembly

CLUTCH
CONTROL

CONTENTS

DESCRIPTION

CL
5
Removal
CL
9

CLUTCH
PEDAL

Hydraulic
clutch

CL
6
Disassembly
CL
9

Removal

CL
6
Inspection
CL

9

Inspection
CL
6
Reassembly
CL
9

Reinstallation

CL
6
Reinstallation

CL
10

Adjustment
CL
6
OPERATING
CYLINDER

Hydraulic
clutch

CL
10

CLUTCH
PEDAL
CLUTCH
CONTROL
Removal

CL
10

CABLE
Mechanical
clutch
CL
7
Disassembly
CL
10

Removal
CL
7
Inspection
CL
10

Inspection
CL
7
Reassembly
CL
10

Reinstallation

CL
7
Reinstallation
CL
10

Adjustment
CL

7
ADJUSTING
WITHDRAWAL
LEVER
CL

10

CLUTCH
MASTER
CYLINDER
BLEEDING
CLUTCH
SYSTEM

Hydraulic
clutch
CL
9
Hydraulic
clutch
CL
11

DESCRIPTION

The
B
I
IO

series
vehicles
with

left
hand

steering
wheel

and

right
hand

steering
wheel

respectively
adopt
hydraulic

type
and
mechanical

type
clutch
control

systems
The

hydraulic
type
clutch
control

system
consists
of

pendent
clutch

pedal
master

cylinder
operating
cylinder

and
withdrawal
lever
The

withdrawal
lever
is
of
an

inner

CL

5

CHASSIS

2

Apply
brake

fluid

sufficiently
to
the

cylinder
and

piston
and

assemble
them

Reinstallation

Reinstall
the
master

cylinder
assembly
in
reverse

sequence
of

removal
and

adjust
as
follows

I

Adjust
the

pedal
height
by
changing
the

push
rod

length

2
B

eed
air

out
of
the

hydraulic
system

OPERATING

CYLINDER

Hydraulic
clutch

Removal

Remove

the
return

spring

2

Disconnect
the
clutch
line

from
the

operating
cyl

inder

3

Disconnect
the

push
rod

from
the

withdrawal
lever

4

Release
two
bolts
used

to
mount

the

operating

cylinder
to
the
clutch

housing

Disassembly

1
Remove
the

dust

cover

2
Remove
the

snap
ring
and
all
other

parts
can
be

disassembled

@

Fig
CL
22

Operating

cylinder
disassembled

CL
10
Inspection

Check
all

parts
especially
the

piston

cup
and

replace

if
worn
or

damaged

Reassembly

Reassemble

the

operating
cylinder
in

reverse

sequence

of

disassembly

noting
the

following
matters

Soak
the

piston
cup
in
fluid
before

reassembly

Install
the

piston

cup
carefully
so
that
it
is
faced

correctly

2

Apply
brake

fluid

sufficiently
to
the

cylinder
and

piston
and

assemble
them

Reinstallation

Reinstal
the

operating
cylinder
in

reverse

sequence
of

removal

1

Bleed
air
out
of

the

hydraulic
system

2

Adjust
the

push
rod
so
that
the

withdrawal
lever
end

play
is
0
to
2
0

mm
0

0394

to
0
0787
in

in

accordance

with
the

following
instructions

AD
USTING
WITHDRAWAL
LEVER

Correct

adjustment
of

the
clutch
withdrawal
lever
is

essential

Insufficient
free
travel
between
the
release

bearing
and
the

diaphragm

spring
fingers
causes
the
clutch

to

slip
while
excessive

free
travel
affects
full

disengage

ment
of
the
clutch

The
clearance
between
the
release

bearing
and
the

diaphragm
spring

fingers
can
be

adjusted
at

the
with

drawallever
end

as
follows

Hydraulic
clutch

Loosen

the
lock

nut
tighten
the

adjusting
nut
and

eliminate

clearance
between
the

top
of

the
withdrawal

lever
and
release

bearing

2
Return
the

adjusting
nut
from

that

position
I
4

turns
and

set
the

adjusting
nut
stationarily
with
the
lock

nut

CLUTCH

Operating
cylinder
clutch

Operating
cylinder
diameter

T
Ilhtening
torque
19
05
mm
0
750
in

Clutch

assembly
securing
bolt
1
5
to
2
2

kg
m

10
8
to
15
9

ft
Ib

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Condition

Noises
audible

on

pedal

depression

Noises
audible

on

pedal
release
Probable
cause

Excessively
worn

damaged
or

poorly
lubri

cated
release

bearing

Seized
release

bearing
and

diaphragm

spring

fingers

Insufficient

pedal
free
travel

Weakened

unhooked
or
broken
clutch

pedal

return
and
control

springs

Weakened
clutch
withdrawal
lever
return

spring
broken
or
unhooked

Excessive

play
between
clutch
disc
hub
and

drive
shaft

spline

Misalignment
of
clutch
disc
to

flywheel

causes

slight
movement
of

disc
hub
in

respect
of

facings

This
noise
is

especially
audible
with

engine

idling
or

at
low

speed

Broken
or
weakened
clutch
disc
cushion

springs

Insufficient

pedal
free
travel

Weakened
unhooked
or
broken
clutch
con

trol
and

pedal
return

prings

CL
13
Corrective
action

Replace
the

bearing
which

being
cased

cannot
be

greased
inside

Replace
the
release

bearing
Clean

diaphragm

spring
fingers
with
metal
brush
and
smooth

out

bearing
contact
faces
with
felt

polishers

Readjust
pedal
free
travel

correctly

Set

springs
in

position
or

replace
them
if

weakened
or

snapped

Replace
the

spring
or
hook
it

up
as

required

Replace
the
clutch
disc
and

ensure
that

clearance
between

hub
of
new

clutch
and

drive
shaft
is

within
0
50
mm
0

0197
in

endwise
and
0

20
mm
0

0079
in
crosswise

When
clearances
exceed
above
limits

replace

the
drive
shaft
also

Set
level
of
clutch
disc
with
clutch
disc
in

place
on

drive
shaft
set
it
under

slight

rotation
and
check
for
no
run

out

using
a

scriber

Replace
the
clutch
disc

Set

pedal
free
travel

correctly

Check
the

springs
for
correct

position
and

replace
them
if

necessary

CHASSIS

5
Remove
the

speed
change
retainer
bolt

I

6
Remove
the

speed
change
retainer
2

7
Remove
the
2nd

top
change
lever
and
bush

13

from
the
control
rod
4

8
Lower
the
control
rod

so
that
the

control
lever

pin

comes
out
from
the
lower
bracket
5

and
withdraw
the

control
lever

pin

Note

low
the
control
rod
to
such

an
extent
that
the

con
b
ol
lever

pin
does
not
interfere
the
lower

bracket

9
Withdraw
the
control
rod
from
the

passenger
com

partment

10
Remove
the
cotter

pins
and
disconnect
the

speed

change
rods
Remove
the

cross
shaft
from
the
side

member
and
withdraw
the

cross
shaft

assembly

Fig
TM
59
Cross

shaft
assembly

Inspection
and

repair

Check
all

sliding
parts
and

component
parts
for
wear

and
other

damages
and

replace
as

required

Note

Especially
for

collapsible
type
control
rod
be

careful
not
to

apply
a

large
load
toward
the
axial

direction
when

delivering
and

installing

When
installing
the
control
rod
if
slackness
exists

toward
the
axial

direction
replace

S

i

TM
18

C

1
rr

i
Al
Installation

Install
the
control

system
in

reverse

sequence
of

removal
Before

installing
and

assembling
apply
chassis

grease
to
all

sliding
surfaces

Adjustment

I
Set
transmission

side
manual
lever
to
the

neutral

position

2

Temporarily
connect
the
trunion

on
the
lower

support
bracket
head
to
each
rod

3

Set
the
rod
on
the
lever

stationarily
so
that
the

grooves
for

adjustment
of
neutral

position
on

the

upper

surface
of
the
lower

support
bracket
and
each
lever

are

aligned
straight

t

I
Neutral

setting
groove

2
Lower

support
bracket

13
I
Shift
lever

Fig
TM
60

Adjustment
of
neutral

setting

4

Upon

completion
of
the
above

adjustment
operate

the
hand
lever
to
the
individual
select
and
shift
directions

and
make
sure
that
the
hand
lever

can
be

operated

smoothly
and

lightly

Readjust
if

dragging
slackness
and
or
other
unusual

conditions
exist