ECU DATSUN B110 1973 Service Owner's Manual

REAR
AXLE
REAR

SUSPENSION

DESCRIPTION

Rear

suspension
consists
of
semi
elliptic

leaf

springs

telescopic
hydraulic
shock
absorbers
and
rubber

bumpers

The
rear

spring
center

pin
is

off
set
110
mm
4
33
in

toward
the
front
from

the
center
of
the

spring
This
is

done
to
reduce

spring
wind

up
and
to
decrease
the

arc

while
the
rear
wheel

swings
through
Thereby
minimizing

the

possibility
of
the
rear

suspension
effecting
vehicle

stability

Iso

clamp
devices
are
used
for

attaching
the

axle

housing
to
the

spring

The
leaf

springs
shock
absorbers
and
rear
axle

housing

are
mounted
on
rubber

bushings
at
each
end
to
minimize

noise
and
vibration
of
the
transmission
to
the
car

body

and

passenger

compartment

REAR
SPRING

Removal

1
Jack

up
the

center
of
the
rear
axle
until
the
wheels

are
clear
from
the

ground
Support
the
rear

end
of
the

frame
on
stands

Fig
RA
l1
Rear

spring
U

bo
ts

2
Disconnect

the
shock

absorber
bottom
end
from
the

spring
lower

seat

3

Support
the
rear
axle

housing
with
a

jack

4
Loosen
the
lock

nuts
of
the

rear

spring
U

bolt
and

remove
the
bolts

spring
seat

location

plates
and
seat

pads
5
Loosen
the
three

fixing
nuts

securing
the

front

bracket
remove
the

front
bracket
from
the

leaf

spring

front

eye
and
car

body
and
lower
the
rear

spring

Fig
RA
12
Rear

spring
front
bracket

6
Remove

upper
and
lower
nuts
of
the

rear
shackle

Fig
RA
13
Shackle

Inspection
and

repair

1
Examine
the

spring
leaves
for
fractures
or

cracks

2
Test

spring
and

compare
with
the

specifications
given

in

Service
Data

and

Specifications
If
the

spring
is

found

defective

replace
with
a

new

assembly

3
Check
the

front

pin
shackle
U
bolts
and

spring
seat

RA
5

CHASSIS

for
wear
cra
ks

straightness
and

damaged
thread
s
If

defective

parts
are
found

replace
with
new
ones

4

Inspect
all
rubber

pans
for
wear

damage

separation

and
deformation

Replace
them

if

necessary

Installation

Install
the
rear

spring
in
reverse

sequence
of
removal

noting
the

following
matters

Coat
the

front
bracket

pin
front
bracket

bushing

shackle

pin
and
shackle

bushing
with
a

soap
solution

prior

to

assembly

2

The
front

pin
securing
nut
and
shock
absorber
lower

end

securing
nut

should
be

tightened
with
the
vehicle

unladen

Note
Make
sure

that
the

flange
of
the
shackle

bushing
is

clamped
evenly
on

both
sides

REAR
SHOCK
ABSORBER

Replacement

lack

up
the

center
of
the
rear
axle

and

support
the

axle

housing
with

stands

Fig
RA
14

Removing
the
shock
absorber
ower
end
2
Remove
the

lower
end
of
the
rear
shock

absorber

from
the

spring
seat
See

Figure
RA
14

FiK
RA
15

Removing
shock
absorber

upper
bracket

3
Remove
the
rear

shock
absorber

installing
nut

located
under
the
rear
seat
back

4

Install
rear

shock
absorber
in
reverse

sequence
of

removal

Inspection

Test
the
shock

absorber

and

compare
with
the

specifications

given
in
Service

Data
and

Specifications

Replace
if

necessary

2

Check
for

leakage
cracks
and
the

shafl
for

straightness

3

Inspect
the
rubber

bushings
for

damage
cracks
and

excessive

deformation

Replace
the
defective

parts
jf

necessary

RA
6

Removal
and

disassembly

The

single
master

cylinder
is
removed

and
disassembled

in
the
same

manner
as
the
tandem

type
master

cylinder

Inspection

Refer
to
the
section

covering
Inspection
of
tandem

type
master

cylinder

Reassembly
and
reinstallation

The

single
master

cylinder
is
reassembled
and

re
BRAKE

installed
in
the
same

manner
as
the

tandem

type
master

cylinder

BRAKE
LINE

The
bl1lke

pipe
adopts
a

double
wall
construction

steel

tubing
and
with
this
construction
lhe

rigidily
has
been

improved
Moreover
the

portion
of
brake
line
laid

beneath
the
vehicle

floor
is

galvanized
improving
the

corrosion
resistance

1

Bridge
tube
9
Brake
hose

2

Brake
tube
10

Bridge
tube

3
Brake
hose
11
Brake
tube

4
Brake
tube
12
Brake
hose

5
Brake
tube
13

Brake
tube

10
6
3

way
connector
14

3

way
connector

7
Brake
tube

15
Brake
tu
be

8
Brake
hose

Fig
BR
6
Brake

line

Removal

1
Remove

flare
nuts

from
both

ends
of
the
brake
tube

steel

tube
and
remove

clips
used
to
secure
the
brake

tube

on
the

paneL
The

brake
tube

can
be
removed

easily

I
1

I
Brake

master

cylinder

I
2

Front
3

way
connector

Fig
BR
7
Brake
tubes
around
master

cylinder

BR
5

CHASSIS

Fig
BR
24

Depression
piston
A

and
B
into

cylinder

Nota
a
Nota
that
brake
fluid

may
overflow
from
the

reservoir
It
is
recommeooed
that

operation
be

carried
out

by

loosening
the
breather
to
release

brake
fluid

b
The

piston
can
be

easily
pushed
in

by
hand
But

if

pushed

excessively
the

groove
of

piston
goes

inside
of
seal
as
shown
in

Figure
BR
25
and
the

seal
will
be

damaged
When
the

piston
is

pushed

excessively
into
the

cylinder
remove
the
brake

assembly
disassemble
it

push
out
the

piston
to
the

arrow
direction
as
shown
in

Figure
BR
25
and

reassemble

r
w

i

@

I

I

I

I
i

I

I

I

1

I
1

1
Piston

ieat

1
2

I
Normal

position
I

Fig
BR
25
Piston

pushing
in

position

3

Install

pad
and
anti

squeal
shim
assemble

the

anti

squeal

spring
and

retaining

pin
and

secure
them

with

clip
ARROW

MARK

Fig
BR
26
Arrow
mark
on
shim

I

Install
the
shim

so
that
the
arrow

mark

points
the

rotor
forward

rotating
direction

2

Apply
the
coil

spring
to

the

retaining

pin
which
is

distanced

from
the
air

bleeder

4

When
the

pad
is

installed

depress
the
brake

pedal

several
times

so
as
to
settle
down
the

pad
in
the

position

Caliper

assembly

Removal

L

Remove
the
brake

pad
Refer
to
Pad
re

placement

2

Disconnect
the
brake

tube
from
the
wheel

cylinder

3

Remove

the
strut

assembly
and

knuckie
arm
instal

lation
bolt

so
as
to

ease
removal
of

the

caliper

assembly

installation
bolt

BR
12

BRAKE

Fig
BR
27

Removing
strut

assembly
and
knuckle
arm

installation
bolt

4
Remove
the

caliper
assembly
installation

bolt
and

separate
it

from
the

strut

assembly

Fig
BR
28

Removing
caliper
assembly
instaUation
bolt

Disassembly

I
Remove

mud
and
other
contaminations
from

the

caliper
assembly
before

disassembly

2
Drain

brake
fluid
from
the
wheel

cylinder

3

Loosen
the
air
bleeder
and

depress
tha

pistons
A

and
B
into
the

cylinder
Refer
to
Pad

replacement

4
Secure
the

yoke
in
a
vise
and

tap
the

yoke
head

with
a
hammer
The

cylinder
body
can
then

be

removed
from
the

yoke
When

removing
the

cylinder

body
be
careful
not

to
allow

the

piston
A

coming
out

from
the

cylinder

BR
13
i
c
J

l
l

7

I

0

I

I

i

I

f
1

1

J
t
1

Fig
BR
29

Tapping
yoke
head

5
Remove
the

bias

ring
from
the

piston
A

6

Remove
the

retaining
rings
and

boots

from
the

pistons
A
and
B

J

l

lj

7

fI

II
l

j
B

11
I
Retaining
ring

121
Boot

Fig
BR
30

Cylinder
body
and

piston

7

Depress
and

remove
the

piston
from
the

cylinder

8
Remove
the

pislon
seal

from
the

cylinder

Note
Remove
the

piston
seal

carefully
with

fingers
so

that
the

cylinder
wall
is
not

damaged

9
Remove
the

yoke
spring
and

yoke
bias

spring
from

the

yoke

Inspection
and

repair

Thoroughly
clean
all
disassembled

parIs
and
check

them

for
the

following
items

BRAKE

Brake

pedal
height

I

Fl
I

Jl

BRAKE
MASTER

CYllN

ADJU
SHI

1

I
195mm
001971011

THICKNESSIO
8
mm

00315
Inl

116mm
00630In
TOP
LAMP
SWrTCH

r

b

O

ZOlTlI
I

A
12
n

Y
1
O

09

ttr
i
l

Fig
BR
52
Brake

pedal
adjustment

1
Loosen
the

stopper
up
to
such

extent
that
the
brake

pedal
stopper
is

separated
from
the

pedal
arm

2
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

143
5
mm
5
65
in

Adjusting
shim
thickness

for
selection

0
5
mm
0

0197
in

0
8
mm
0
0315
in

1
6
mm
0
0630
in

Note
When

adjusting
be
sure
to

use

adjusting
shims

having
same
thickness
for

upper
and
lower
brake

master

cylinder
installation
bolts

3

Upon
completion
of

adjusting
shim

adjustment

tighten
the

stopper
down
to
such
an

extent
that

height
of

the

pedal
head
is
141
5

t2
mm
5
57

to
0787
in

and

tighten
the
lock

nut

securely

4
Free
travel
of
the
brake

pedal
is
5
to
15
mm

0
197

to
0
591
in
and
the
stroke
is
120
mm

4
72

in
Hand
brake

Turn
the
turn
buckle

properly
and

adjust
hand
brake

lever

operating
stroke

correctly
so
that

operating
stroke
is

78
5
mm
3

091
in
6
notches

at

operating
force

of
11

to
15

kg
24
3
to
33
1
1b

Upon
completion
of

adjustment
be

sure
to

tighten
the

lock
nut

I

I
Rear
cable

2
Turn
buckle

3
Lock
nut
1451
Front
cable

Propeller
shaft

Fig
BR
53

Adjusting
turn

buckle

BR
21

CHASSIS

Unloaded

For

normal

speed

U

nder
100

km
h
or

60

mph

F
or

high

speed

Over
100

km
h

or

60

mph

Loaded

For
normal

speed

Under
100

kmlh
or

60

mph

For

high
speed

Over
100

kmlh
or

60

mph

MAINTENANCE
AND
SERVICE

Tire
inflation

Correct
tire

pressure
is

very
importan
t
to

ease
of

steering
and

riding
comfort
This
also
reduces

driving

sound

to
a
minimum

resulting
in

longer
tire
that

is

overinfla
lion
or

underinflation

promotes
wear
at
center

tread
or
shoulder

of
tire

If
all
tires
are

inspected
frequently
and
maintained

correct
tire

pressure
it
is

possible
to
detect

sharp
material

in
the
tread

Also
the
above

check
avoids
abnormal
wear

which

invites
serious
trouble

If
tires
indicate
abnormal
or

uneven
wear
the

cause
of
trouble
should
be
detected
and

eliminated

After

inflating
tices

leakage
in
valve

should
be
check

cd
Without

valve

caps
leakage
will

occur
due
to

dirt
and

water

resulting
in

underinOation

Accordingly
whenever

tire

pressure
is

checked
be
sure
to

secure
valve

caps
and

tighten
firmly
by
hand

Tubeless
tire

repair

In
urder

to

inspect
a
leak

apply
soapy
solution
to
tire

or

submerge
tire
and
wheel
in
the
water
after

inflating
tire

to

specified
pressure
Special
inspection
for
leaks
should
12
15
17
22

1
5

1
8

22
25

1
2
2
5

I
7

36

1
5
2
8
22
40

be

carried
out
around

the
valve
wheel
rim
and

along
the

tread
Exercise

care
to
bead
and
rim
where

leakage
occurs

Wipe
out
water

from
area
which
leaks
air
bubbles
and

then
mark
the

place
with
chalk

After

remuving
the

materials
caused

puncture
seal
the

point
to
avoid

damage
to
the

tire
due
to

entrance
of

dirt

and

water
When

repairing
the

puncture
use

the
tire

repair

kits
which
are
furnished

from
tire

dealers

following
the

instructions

provided
with
the
kits
In

case
that
a

puncture
becomes

large
or
there

is

any
other

damage
on

the
tire

fabric

repair
must
be

carried
out

by
authorized

tire

dealers

Wheel

repair

Inspect
wheel
rim

flange
for
bend
or

dents
If

any
of

the
above
deterioration
is
detected

repair
should
be
made

to

secure
complete

sealing
The

flange
should

be
cleaned

by
a
wire
brush
when
rust
is
found
on

the

flange

Furthermore
if

excessive

pitting
occurs
on

the
rim

eliminate
it
with
a
file

Wear

Misalignment

When
the

front
wheels

align
in
excessive
toe

in
or

WT
2

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

STEERING

6

Remove
six

bolts
used

to
secure
the

steering
column

hole
cover
to
the

dash
board

Fig
ST
5

Removing
steering
column
hole
cover

7
Remove

the
shift
rod
and

select
rod
from
the

change

lever
and
select
lever
after

removing
the

cotter

pin
from

the
trunnion

8
Disconnect
the

gear
arm
from
the

crOSS
rod

9
Remove

three
bolts
used
to

secure
the

steering
gear

housing
to
the

body

Fig
ST
6

Removing
steering

gear
assembly

10

Pull
the

steering
gear
and
transmission

control

toward
the

engine
compartment

11
Remove
the
transmission
control
from
the

steering

gear
assembly
as
outlined
under
Transmission

control
DISASSEMBLY

1
Remove

the

steering
gear
arm

fIxing
nut
and

pull
out

the

gear
arm

using
a

Steering
Gear

Arm
Puller

ST27140000

2
Remove
the

drain

plug
and
drain
the
oil
from

the

steering
gear
housing

3
Loosen
the

adjusting
screw
nut
and

turn
the
sector

shaft

adjusting
screw
a

few
turns
counterclockwise

Remove

four
sector
shaft

cover

fIxing
bolts
and

pull

the
sector
shaft
cover
with

sector
shaft
from
the

gear

housing

t

I

gJ

I

I

Fig
ST
7

Removing
sector

shaft
cover

4
Remove

four
fIxing
bolts

securing
the

column

jacket

to
the

gear
housing
and

pull
out
the
main
column

jacket

assembly
from
the

gear
housing

Fig
ST
8

Removing
main
column

ST
3

STEERING

The

jacket
tube
is
of
a
mesh

and
a

part
of

which
is

punched
in
rhombus

forming
an

energy

absorbing
part
of

the

collapsible
steering

Upper
and
lower

guide
tubes
two

guide
tubes

joined

with

polyacetal
resin

are
inserted
into

the
mesh
tube
so

STEERING
POST
CLAMP
that
an

energy
generated

by
collision
can
be
absorbed
as

smoothly
as

possible
with
a
low
load
The

guide
tubes

function
as
a

guide
for

mesh
tube
while
the

mesh
tube

is

collapsed
and

improve

bending
rigidity
of
the

entire

jacket
tube

1

1
Plastic

pin

I
2

I
Clamp

1
3

I
Sliding
block

Fig
ST

19

Steering
post
clamp

The

steering
post
clamp
is
secured

on
the

jacket
tube

with
bolt

08110
81210
and

in
addition
two
aluminum

sliding
blocks
are
set

stationarity
on
the
main

body
with

plastic

pins

Note
For
the
bolt
used
to
install
the

steering

post
clamp

on

the

jacket
tube
do
not
use
bolt

having
a

length

exceeding
the
rated

length
or
otherwise
the
bolt

interferes

the
column
shaft

causing
a
trouble

Tightening
torques
are
as

follows

Steering
post
clamp
Jacket
tube

0
8
to
1
0

kg
m
5
8
to
7
2
ft
lb

Steering
post
clamp

Steering

post
bracket

1
5
to
1
8

kg
m
10
8
to
13
0
ft
Ib

Fig
ST
20

Steering
post

clamp
bolts

ST
11