light DATSUN B110 1973 Service Owner's Manual

7

Remove
the

brake
disc

installation
bolt
and
remove

the
brake
disc
from
the

spindle

8
Disassemble

the
wheel

cylinders

Inspection

l
Drums

If

they
show

score
excessive
out
of

round

and
so
forth

reconditioning
by
machining
is

required

Brake
drum
inner

diameter

203
2

mm
8
00

in

Drum

inside
out
of
roundness

Below
0

02
mm
0
0008
in

Max

allowable
drum

inner
diameter

204
5

mm
8
051
in

2

Linings
If
brake
shoe

linings
are

incomp1etedly

seated

soiled
or

greasy
or
deteriorated
due

to
excessive

heating
repair
or

replace
them

If
the

thickness
of
the

lining
is
less

than
1
5

mm
0
0591
in

replace
it

Note
a
If
oil
or

grease
is
found
on

linings
clean

thoroughly
with
carbon
tetrachloride
or

gasoline

b
After

installing
and

bonding
lining
grind
the

lining
face

to
a
diameter

equal
to
the
brake
drum

3

Check
the

adjusting
cams

for
their
smooth

operation

4
Return

springs
If

they
are

considerably
weak

replace
them

Return

spring
dimension

Wire
diameter

x
free

length
turns

3
2

x
118

mm
20
5

0
1260
x
4

65
in

20
5

Load
x

length

55

kg
I21
lb
x
127
1

mm
5

00
in

13
4
0
528

ilL
rnv

0
t
6

hl
03

118

4
65

FREE

LENGTH

UNIT
mm

in

Fig
BR
J
7
Return

spring
BRAKE

5

Check
the
brake
disc

for
distortion

6
Check

the
bore
of
the

wheel

cylinder
for
wear

sign

of
rust
and

damage

If
clearance
between

the

cylinder
and
the

piston

exceeds
0
15

mm
0
0059

in

replace
them

Fig
BR
J
8

Sectional
view

of
front
wheel

cylinder

7
When
the

wheel

cylinder
is

overhauled
it
is

recom

mended
that

cups
be

replaced
even
if

apparently
they
are

in

satisfactory
conditions

Cups
must
be

replaced
if

deformed
due
to

damage
crack
corrosion

smelling

andf
or

aging

Reassembly
and
reinstallation

The
rear

brake
is

reassembled
and
reinstalled
in
reverse

sequence
of

disassembly
and
removal
However
note
the

following
matters

When

assembling
the
wheel

cylinder
be

sure
to

apply

rubber

grease
to
the

piston

cup
and

other
rubber

parts

slightly

2
When

installing
the
wheel

cylinder
to
the
brake

disc

apply
brake

grease
to
the

cylinder
disc
and

adjusting

plate
sliding
surfaces
and
to
the
wheel

cylinder
lever

fulcrum

portion

sufficiently
so
that
the
wheel

cylinder

slides

smoothly

BR
9

BRAKE

i
f

F

PISTON
A
PISTON
S

Fig
BR
33

Piston
A
and
B

3

Apply
rubber

grease
lightly
to
the

sliding
portion
of

piston
and
insert
the

piston
into
the

cylinder

Note
When

inserting
the

piston
be
careful
not

to
insert

too
far

4
1
nstaU
the
boot
and

retaining
ring

Fig
BR
34

Installing
boot

5

Install
so
that
the

yoke

groove
of
bias

ring
of

piston

A
coincides
with
the

yoke
groove
of

cylinder

6

Install
so
that
the

projected
portion
of

yoke
spring

faces

to
disc
as

shown
in

Figures
BR
35

and
36

BR
15
YOKE
SPRING

Fig
BR
35
Installation

of

yoke
spring
1

Fig
BR
36
Installation

of
yoke
spring
2

7
Install
the

bias

spring
to

yoke
so
that
the

bias

spring

comes
to
the
air
bleeder

side
of

cylinder

8

Apply
the
brake

grease
to
the

yoke
sliding
portion
of

cylinder

9
With
the

yoke
spring
inserted

to

cylinder
groove

lightly
correct

position
of
the
bias

spring
so
that
the

groove
of
bias

spring
conincides
with

yoke

CHASSIS

Fig
BR
37

Correcting
bias

spring
position

10

Assemble

the

cylinder
body
and

yoke
by

tapping

the

yoke
lightly

11

Apply
the
brake

grease
fully
to

the

yoke
sliding

groove
of

cylinder

12
Install

the
air

bleeder

Reinstallation

Reinstall
the

caliper

assembly
in

reverse

sequence
of

removal

After
the

pad
is

installed

completely
bleed
the

REAR

BRAKE

r

e
hydraulic
line
and

measure
the
rotation

torque
of
disc

Fig
BR
38

Measuring
starting
torque

Starting
torque

9

0

kg
cm
7

80
in

lb

At
the

hub
bolt

1
57

kg
3
45
lb

Tightening
torque

Caliper
assembly
installation
bolt

4
6
to
6

kg
m
33
3

to
44

1
ft

lb

Brake
tube

flare
nut
connected
to

wheel

cylinder

1
5
to
1
8

kg
m
10

8
to
3
0
ft

lb

JJ

i

o

C

EID
I

o

fj

t

Fig
BR
39
Rear
brake

construction

BR
16

CHASSIS

4

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
5

to
6
mm

0

1969
to
0

2362
in

completely

5

Make
sure
that
the
cable
dust
cover
is
not

damaged

or

warped

Reinstallation

Reinstall
the
hand
brake
in

reverse

sequence
of

removal

noting
the

following
matters

Be

careful
not
to

damage
or
twist

the
dust

cover

2

Tighten
the

hanger
strap
and
the

cable

connecting

nut
to

0
8
to
1
0

kg
m

5
8
to
7
2
ft
1b

3
When

adjusting
rear
brake
shoe

clearance
be
sure
to

loosen

the
inner
cable

sufficiently

4

Grease
the

sliding

parts
with
multi

purpose
grease

MIL
G
2108
or

G
10924

AD
JUSTMENT

Brake
shoe
clearance

Front
drum
brake

Jack

up
the
vehicle
and

remove
the
wheeL

2
With
the

brake
drum
installed

tighten
the

cam

adjusting
stud
clockwise

up
to
such
an
extent
that
the

brake
shoe
comes
into

contact
with
the
brake
drum

by

applying
your
hand

and
tool
from
reverse
side
of

the

brake
disc

Fig
BR
50

Adjusting
front
brake
shoe

clearance
Turn
the
cam

adjusting
5
ud

counterclockwise

up
to

such
an
extent
that
the
brake
shoe
is

separated
slightly

from
the
brake
drum

4
Turn
the
brake
drum

and
if

the
brake

shoe

interferes
the
brake
drum

readjust
the
clearance
In

addition

depress
the

brake

pedal
and
make
sure
that

the

brake

operates
effectively
and

correctly

Front

disc
brake

Ordinarily
adjustment
is
not

required
because
clear

ance
between

pad
and
rotor
is

adjusted
automatically

by
elasticity
of
the

piston
seal

Rear

brake

Jack

up
the
vehicle
and
remove
the
wheeL

2

Appiying
your
hand
and
tool
from
reverse
side
of

the

brake
disc

tighten
the

brake

adjuster
wedge

clockwise

up
to

such
an
extent
that
the
brake
shoe

comes
into

contact
with
the

brake
drum

Fig
BR
51

Adjusting
rear
brake
shoe
clearance

3
Return
the

adjuster
wedge
properly
so
that
the

brake
shoe
is

separated
from
the
brake
drum

slightly

4
Turn
the

brake
drum
and
if

the
brake
shoe

interferes
the

brake
drum

readjust
In
addition
de

press
the
brake

pedal
and
make
sure
that
the
brake

operates
effectively
and

correctly

BR
20

Pedal

yields
under

slight

pressure

Excessive

pedal

travel

All

brakes

drag

One
brake

drags

Unbalanced
brakes
BRAKE

Use
of
a
brake
fluid
with

a

boiling
point

which
is
too
low

Reservoir

filler

cap
ven
t
hole

clogged
This

promotes
a
vacuum
in
master

cylinder
that

sucks
in
air

through
rear
seal

Deteriorated
check
valve

External

leaks

Master

cylinder
leaks

through
primary
cap

System
has

not
been
bled

Improperly
adjusted
clearance

Fluid
level
in

master

cylinder
is
too
low

Thermal

expansion
of
drums
due
to

over

heating

Insufficient
shoe
tlrdrum

clearance

Weak
shoe

return

springs

Brake
shoe

return
no
free

travel

Seized
master

cylinder
piston

Loose
or

damaged
wheel

bearings

Weak
broken
or

unhooked
brake

shoe

return

springs

Insufficient
clearance
between
brake
shoe

and
drum

Grease
or
oil
on

linings

Seized

piston
in
wheel

cylinder

Tires

improperly
inflated

Loose
wheel

bearing

BR
25
Change
with
the

specified
brake

fluid
and

bleed

system

Clean
reservoir
filler

cap
and
bleed
the

system

Fit
a

new
check

valve
and
bleed
the

system

Check
master

cylinder
piping
and

wheel

cylinder
for
leaks
and
make

necessary
re

pairs

Overhaul
master

cylinder

Bleed

the

system

Adjust
shoe

to
drum

clearance

Full

up
with

specified
brake

fluid

Bleed
the

system
if

required

Allow
drums

to
cool
off
Check
brake

shoe

linings
and
drums

Replace
damaged

parts

Adjust
clearance

Replace
the

springs

Adjust
pedal
height

Service
the

master

cylinder
replace
the

piston
and
bleed

the

system

Adjust
or

replace
wheel

bearings

Replace
spring

Adjust
brakes

Clean
brake
mechanism

replace
lining
and

correct
cause
of

grease
or

oil

getting
on

lining

Service
the
wheel

cylinder
and

bleed
the

system

Inflate
tires

to
correct

pressure

Adjust
wheel

bearing

WHEEL
AND
TIRE

Note
In

replacing
tire
take
extra

care
not
to

damage
tire

bead
rim

flange
and
bead
seat

Do
not

use
tire
irons
to
force
beads

away
from

wheel
rim

flange
that
is

always
use
tire

replace

ment
device
whenever
tire
is
removed

WT005
2
Discard
when

any
of
the

following
trouble
occurs

I
Broken
or

damaged
bead
wire

2

Ply
or
tread

separation

3
Worn
febric

damage
on
tubeless
tire

4
Cracked
or

damaged
side
wall

etc

Fig
WT
4

Wheel
rim
run
out
heck

points

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Condition
Probable
cause
Corrective
action

Wheel
wobbles

Improper
t
re

pressure
Measure
and

adjust
correctly

Damaged
tire

9f
distorted
wheel
rim

Repair
or

replace

UnbalanceiLwheel
Balance

correctly

Loose

wheel
nuts

Retighten

Worn

qr

damaged
wheel

bearing
or
excessive

play
of
wheel

bearing
Correct

play
or

replace

Improper
front
wheel

alignment
Adjust

Worn
or

damaged
ball

joint
and
link

bushing
Replace

Excessive

steering
linkage
play
or
worn

steering
lin

age
Adjust
or

replace

Loose
stcerin

linkage
connection
Retighten
the
nuts
with
the
rated

lightening

torque
or

replace
worn

parts
if

any

Broken

suspension
spring
Replace

Defective
shock
absorber
Replace

Unevenly
or

excessively
worn

tire
Improper
tire
rotation
Conduct
tire
rotation

periodically

Standard

every
10

000
km
6

000
miies

Improper
tire

pressure
Measure
and

adjust
correctly

Unbalanced
wheel
Balance
or

replace

Improperly

adjusled
brake

Readjust
correctly

WT5

STEERING

DESCRIPTION

The

steering
system
consists

of

recirculating
ball

type

gear
box

and

parallelogram
linkage

These

systems
give
good

response
light
handling
and

utmost
durability
Moreover
the

steering
linkage
is

equipped
with
a
torsion

rubber

system
idler
arm
which

absorbs
shock
from
the

wheel

Check
the
lubricant
of

gear
box

every
10
000

km
6
000
miles
and

replenish
recommended
oil
as

required

The

steering
linkage
should
be

greased
up
with
wheel

bearing
grease
every
50
000
km
30
000
miles

All

necessary
service

procedures
for
the

steering
lock

system
are
described
in
the

BODY
ELECTRICAL

SECTION
of
this
manual
and
therefore
no
instruction
is

given
here

STEERING

CONTENTS

REMOVAL

DISASSEMBL
Y

Ball
nut

assembly
ST
2

ST
3

ST

4
INSPECTION
AND
REPAIR

ASSEMBL
Y
AND
ADJUSTMENT

INSTALLATION
ST
4

ST
5

ST
7

1

Steering
gear
housing

2
Shaft

steering
sector

3
Screw

adjusting
roller
shaft
4
Cover

sector
shaft

5
Shim
worm

bearing

6

Comp
jacket
column
7

Assembly
column

steering

8

Assembly
bearing
steering
worm

9

Assembly
nut
ball

Fig
ST
1

Steering
gear
components

ST
1

Iii

I
o

t

I

I

CHASSIS

Fig
ST
2

Steering
wheel

REMOVAL

1
Remove
the

horn

ring
and

remove
the

steering
wheel

nut
and

pull
out
the

steering
wheel

by
the
use

of
a
Steer

ing
wheel

puller
ST27180000
3
Remove
the
turn

signal
and

lighting
switch

com

pletely

4
Remove
the
hand
lever

assembly
from

the
control

rod

assembly
by
unscrewing
the

fIxing
bolts

5
Remove

two

fIxing
bolts
used
to
secure
the

steering

column
to
the
instrument

panel

ST27180000

Fig
ST

3

Removing
steering
wheel
lock
nut

Note
The

horn

ring
can

be

easily
removed

by
two
bolts

2

Remove
the

steering
column
shell

Fig
ST
4

Removing
steering
column

upper
side

ST
2

CHASSIS

Description

The
accelerator

linkage
is

lightv
eighL
and
onstfuction

is
such
that
the

linkage
operates
smoothly
and
is

unaffected
bv

engine
vibration

Adjustment

Play
of
accelerator
wire

I
Install
the

pedal
arm
side

securely
with
a

spring

clamp

2
Set
the
dash
board
side

Quter
case

stationarily
with

a

cap
nut
Do
not
set
the
carburetor
side

adjusting
unit

stationarily

3

Pull

up
the
carburetor
side
socket
toward
P

direction

up
to
such
an
extent
that
the
throttle
lever
is

about
to

move

pull
down
the
socket

I
to
1
5

mm

0

0394
to
0
0590
in
frorn
that

position
toward

Q

direction
and
set
the
socket

stationarily
with
a

clamp

THROTTLE

LEVER

Q

I
I

I
Clamp

I
2

I
Sockel

Fig
FJ
3

Adjusting
play
of
a
ccelerator

wire

Pedal

stopper

Depress
the
accelerator

pedal
down

to
such

an
extent

that
the
throttle
lever

fully
opens
adjust

stopper
bolt

height
so

that
clearance
between
the
accelerator

pedal

reverse
side
and

stopper
bolt
head
T
is
0
to

I

mm
0

to
0
03Q4
in
and
secure
the

stopper
bolt
with
lock

nut
Fig
FE
4

1djusting
pedal

stopper
height

left
hand

steering

T
0
to
1
mm

0
to
0
0394
in

@

I

I
Lo
k

nut

2
Accelerator

pedal

I
3

I
Stopper
bolt

Fig
FE
5

Adjusting
pedal
stopper
height

right
hand

steering

Note
8
Do
not
bend
the
accelerator

pedal

b

Adjust
accelerator
wire

play
and

stopp
bolt

height
correctly

c

Apply
chassis

grease
No
a
or
1
to
the

sliding

part
of

pedal
bracket

Model
with
automatic
transmission

For
model
with

automatic
transmission
the

pedal
ann

is

equipped
with

kick
down
switch
striker
This
is

only

difference
with
the

standard
model

Note
Note
that
the
kick
down
switch
should
not
come

into
contact
with
the

pedal
arm
striker
when
the

accelerator

pedal
is

depressed

FE
2

n

order
to

secure
the
back
door
in
the

position
adjust

the

position
in
accordance
with
the

following
instruc

tions

I
Install

two
back
door

bumpers

@
on
the

bottom

of
the

back
door
Positions
of

the
back
door

bumpers
are

used

for
standard

positions
when

positioning
the
back

door

and
therefore
no

adjusting
stroke
is

provided

Tightening

torque

Back
door

bumper

fixing
machine
screw

I

kg
m
7
2
ft
lb

2

Place
the
back
door

bumper

plates
as

shown
in

Fugure
BF
38
so
that
inside
of

the
back
door

bumper

comes
into

contact
with
inside

of
the

bumper

plate
and

secure

the

bumper
plates
in

the

correctly
adjusted

positions
The

adjusting
stroke
is
4

mm
0
1575

in

Outside
Inside
Outside

Inside

14

54
A
S
14

54

F

r

I
I

jpiJ

l
l
j

I
1

I
Back
door

bumper

I
2

I
Back
door

bumper

plate

I

Fig
BF
40

Adjusting
back
door

bumper
plate
positions

When

adjusting
back
door

burnper
plate

positions
use

plasticine
or
sirnilar

material
fIll
the

bumper
plates
with

plasticine
close
the

back
door
observe

contact
and

adjust
properly
so

that
both
side

bumpers
come
into

contact
with
both
side

bumper
plates
evenly

It

should
be

noted

however
that

when

the

bumper
BODY

BF
23
plates
are
moved

excessively
to
the
outside

back
door

opening
closing
force
increases

although
the

back
door
is

secured

tightly
Position
the

bumper
plates

properly
so

that
the
back

door
can

be

opened
and
closed

lightly

Note
It
has
been

so

designed
that
the
back
door

bumpers

come
into
contact

with
the

bumper
plates
at
their

inside
However

when
inside
contact
surface
is

worn
contact

may
be
made
at

the
outside
Same

back
door

securing
p
ffect
will

be
obtained

Back
door

hinge
rm

Fig
BF
41

Adjusting
back
door
side
dove
tail

3
Now

adjust
both
side

upper
portions
of
the

back

door

Secure
back
door
side
dovetails

temporarily
toward

the

rear
direction
in
the
center
for
vertical
direction

close
the
back
door
and

adjust

positions
of
the

back
door

side
dovetails

properly
so
that

the
dovetail
comes
into

contact
with
the
back
door

hinge
arm

tightly
and
the

dovetail
is
bent
I
to
2
mm

0
0394
to
0
0787
in

When

there
is
a

gap
between
the

dovetail
and
back

door

hinge
arm
apply
dovetail
side
shim

s
1
6
mm

0
0630
in

thick
beneath
the

dovetail
When
the

dovetail
is
moved
rearward
it

approaches
toward
the

hinge
arm

gap
is

reduced
and
when
moved
forward
it
is

separated
from

the

hinge
arrn

gap
increases
Vertical

adjusting
stroke
is
2

mm
0
0787
in

and
forward

rearward

adjusting
stroke
is
6
mm

0
2362
in

Tightening

torque

Dovetail

fIxing
machine
screw
I

kg
m

7
2

ft
Ib