1979 DATSUN 210 ECU

BR563

Fig
BR
10

Removing
Pad

Inspection

Clean

pads
with

cleaning
solvent

CAUTION

Use
brake
fluid
to
clean
Never
use

mineral
oil

2
When

pads
are

heavily
fouled

with
oil
or

grease
or
when

pad
is

deteriorated

or
deformed

replace
it

3
If

pad
is
worn
to
less
than
the

specified
value

replace

Pad
wear

limit

Minimum
thickness

t
6

mm
0
063
in

Note

Always
replace
pads
in

pad
kit

four

pads
two

clips
four

pad
pins

and
four

pad
springs

4
Check
rotor

referring
to
Rotor

for

inspection

Installetlon

I
Clean

and

apply
P
RC

grease
on

yoke
guide
groove
of

cylinder

body

sliding
contact

portions
of

yoke
and

end
surface
of

piston

Note

a
Do
not

use
common
brake

grease

b

Be
careful
not
to

get
brake

grease

on
rotor
and

pads

2
Loosen
air
bleeder

and

push
pis

ton
B

outer

piston
in

cylinder
until

end
surface
of

piston
B

coincides
with

end
surface
of

retaining
ring
on
boot

Then

inner

pad
can
be

installed
Brake

System

BR564

Fig
BR
11

Pushing
Piston

CAUTION

Piston
can
be

easily
pushed
in

by

hand
but
if

pushed
too
far

groove
of

piston
will

go
inside
of

piston
seal
as

shown
in

Fig
BR
12

At
this

point
if

piston
is

pressured
or
moved

piston

seal
will
be

damaged
If

piston
has

been

pushed
in
too
far

remove
brake

assembly
and
disassemble
it
Then

push

piston
out
in
the

direction
shown

by
arrow

Assemble
it

again
referring
to
follow

ing
section

00

I
Normal

I

position

L

BR409

Fig
BR
12
Position

for
Pushing
Piston

3
Push

piston
A
inner

piston
in

cylinder
by

pulling
yoke
as
shown

The

outer

pad
can
then

be
installed

BRS6S

Fig
BR
13

Pulling
in
Piston
A

BR
7
4

After
installing

pads
depress

brake

pedal
several
times
and

pads

will
settle
into

proper
position

Note

When
worn
out

pads
are
re

placed
with
new
ones
brake
fluid

may
overflow
reservoir
While
re

placing
pads
keep

loosening
bleeder

to
release
brake
fluid

5
Install

wheels
and
lower
car
to

ground

REMOVAL

I
Remove

pads
Refer
to
Pad
Re

placement

2

Remove
brake

tube
from

caliper

assembly

CAUTION

When

removing
brake
tube
use
suit

able
tube

wrench
Never
use

open
end

or

adjustable
wrench

Note

Plug
up
hole
in

caliper
so
that

brake
fluid
does

not
flow
out
from

cylinder
body

3
Loosen
bolts

securing
cylinder

body
to
knuckle

spindle
and

remove

caliper
assembly
from
strut

DISASSEMBLY

I
Drain
brake
fluid
from

top
hole

of

cylinder
body

2
Push
both

pistons
A
and
B
into

cylinder
Refer
to

Pad

Replacement

3

Tap
cylinder
body
lightly
with

a

plastic
hammer
Cylinder
will

then

separate
from

yoke

BR115A

Fig
BR
14

Tapping
Cylinder
Block

6
Apply
P
B
C

grease
to

yoke
slid

ing
part
of

cylinder
Then

reposition

bias

ring
so
that

groove
of
bias

ring

coincides
with

yoke

7

Leaving
yoke
springs
inserted

lightly
into

cylinder
groove
assemble

cylinder
body
and

yoke
by
pushing
or

tapping
yoke
lightly

BA570

Fig
BR
19

A
embling
Yoke
and

Cylinder

8
Install
air
bleeder
valve
on

caliper

INSTAlLATION

1
Install
in

reverse
procedure
of

removal

CAUTION

When

installing
brake
tube

use
Flare

Nut

Torque
Wrench

6694310000

fJ
Tightening
tOlque

Calipel
securing
bolts

4

6
to
6
1

kll
m

33
to
44
ft
lb

Brake

tube
flere
nuts

1
5to
1
8

kg
m

11
to
13
ft
Ib

2

After

installing
pad
bleed
air

from

system
Brake

System

ROTOR

REMOVAL

Refer
to
Front
Axle

Section
FA

for

removal
Note
As
this

value
increases
wear

occurs

progressively
vibration
cor

responding
to
revolution
of

tire

may
often
be
tmnsmitted
to
in

terior

of
car

INSPECTION

Check
the

following
items
and

if

necessary
replace
Checks
can

be

made

by

removing
only
wheel

Sliding
surface

If

there
are
cracks
or

considerable

chips
replace

2

Runout

Adjust
wheel

bearing
correctly

Using
a
dial

gauge
measure
runout
at

the

center
of

rotor

pad
contact
sur

face

Runout
limit

less
than
0
12

mm
0

0047
in

Total
indicator

reading

BR025A

Fig
BR
20

Mecuuring
Runout

3
Parallelism

Measure
thickness
of

entire

periph

cry
of
rotor

using
a
micrometer

Parallelism
when
new

less
than
0
03
mm

0
0012
in

BR
9
Fig
BR
21

Measuring
Parallelism

4

Thickness

If
rotor
thickness
is

beyond
wear

limit

replace
rotor
When

correcting

thickness
be

sure
that
the

thickness

after
correction
does

not
exceed
the

limit

Standard
thickness

10
0

mm
0
394
in

Wear

limit

more
than

8
4

mm
0
331

in

INSTALLATION

Install
rotor
in

reverse
order
of

removal

Adjust
wheel

bearing
preload

correctly
Refer
to

Front
Axle
Sec

tion

FA
for

adjustment

ifl
Tightening
torque

Rotor
to
wheel
hub

3

9
to
5
3

kg
m

28

to
38

ft
rb

BRAKE

BOOSTE
R

INSPECTION
OF

OPERATION

Checking
vecuum

pressure

I

Connect
a

vacuum

gauge
in
the

tine
between
check
velve

and
brake

booster

1
Check
valVe

2

Vacuum
gauge

BA942

Fig
BR
26
Air

Tighte
Te
Set

Up

Probable
cause

Air

leakage
at

check
valve

2
Air

leakage
at

push
rod

seal

3
Air

leakage
between
valve

body
and

seal

4
Air

leakage
at
valve

plunger
seat

5

Damaged
piping
or

joints

Air

tight
test
Under
loed

Fifteen

seconds
after

engine
is

stopped
and

brake

fully

applied
ob

serve
the
rate

of

drop
in
air

pressure

registered
by
vacuum

gauge
If

vacuum

Probable
cause

Air

leakage
at
check
valve

2

Damaged
diaphragm

3
Reaction

disc

dropped
off

4

Air

leakage
at

poppet
assembly
seat

and
valve

body

Inspec
tinK
chec
k
valve

Remove

clip
and
disconnect
hoses
Brake

System

2
Start

engine
end
merease

engine

speed
Stop

engine
when

vacuum

gauge
indicates
500

mmHg
l9
69

inHg

Air

tiKht
test

No
load

Fifteen
seconds
after

engine
is

stopped
observe
the
rate

of

drop
in
air

pressure
registered
by
vacuum

gauge

If
vacuum

pressure
drop
below
the

specified
value
refer
to

the

following

chart
to
determine
the

cause
of

failure

Maximum
vacuum

leakage

25

mmHg
0
98

inHgl

Corrective
action

Replace
check
valve

Replace
brake
booster
as
an

assembly

Repair
or

replace

pressure
drops
below
the

specified

value
refer
to
the

following
chart

to
determine
the
cause
of
failure

Maximum

vacuum

leakage

25
mmHg
0
98

inHgl

Corrective
action

Replace
check
valve

Replace
brake
booster
as
an

assembly

at
connections
The
check
valve
can

now
be
removed

BR
12
JQeL

i
l
f

BR119A

Fis
BR
27
Location

of
Check
Valllt

2

Using
a
brake

booster
testel

apply
a
vacuum

pressure
of
500

mmHg

19
69

inHg
to
the

port
of
check

valve
on
the
brake
booster
side
If

vacuum

pressure
drops
below
the

specified
value
in
15

seconds

replace

check
valve
with
a
new
one

Maximum

vacuum

leakage

01
eheck
valn

10

mmHg
0
39

inHgl

3
When

pressure
is

applied
to
the

b

rake
booster
side
of
check
valve
and

valve
does
not

open
replace
check

valve
with
a

new
one

I

0

tLLiJ

Manifold
side
Brake
booster
side

1

Spring

2

Valve
BR963

Fig
BR
28

Check
Value

4
When

installing
check

valve
be

careful
to
avoid

incorrect
connectiolU

See

Fig
DR
28

Operetlns
test

1
Connect

an
oil

pressure
gauge
to

brake

ine
at
connection

on
master

cylinder

2
Install

a

pedal
force

gauge
on

brake

pedal

3
Start

engine
end

increase

engine

speed
until
a
vacuum

pressure
of

500

mmHg

19
69

inHg
is

registered
on

vacuum

pressure
gauge
With

a

steady

vacuum

pressure
of
500

mmHg
19
69

inHg
measure
oil

pressure
with
res

pect
to
each

pedal

operating
force

1
Control
lever

2

Front
cable

3
Rear

cable

adjuster

4

Rear
cable

S

Strap

6

Oevis

1

Return

spring

REMOVAL

Removal
of
control
lever
and

front
ceble

Disconnect

terminal
from

hand
Brake
System

HAND
BRAKE

BA120A

Fig
BR
34
Hand

Broke

3
Remove
lock

plate
Disconnect

cable

adjuster

brake

warning
switch

2
Remove

bolts

securing
hand

brake
lever
to
floor

@
BR005A

Fig
BR

36

Removi1l
1
Front
Cable

1
Hand
brake

warning
switch

2

Terminal

3
Bolt

4
Pin
4

Pull
front
cable
out
into
driver

s

compartment
and

remove
it

together

with
control

assembly

5

If

necessary

separate
front
cable

from
hand
brake
lever

by

breaking
pin

and

replace
front
cable

B
R036A
CAUTION

Be
careful

not
to
deform
or

damage

control
lever

Fig
BR
35

Hand
Brake
Lever

BR
14

Condition

Unbalanced
brakes

Brakes
fade

Brakes

drag
Brake

System

Probable

cause

Improper
tire
inflation

Improp
r

adjustment
of
shoe
to
drum
clear

ance

Grease
oil
mud
or
water
on

linings
or

pads

Mud
in
brake
drum

Deterioration

oflinings
or

pads

Excessi
wear
of

linings
or

pads

Wheel

cylinder
in

poor
condition

Poor

sliding
condition
of
brake
shoe

Looseness
of

cylinder
body
or

back

plate

securing
bolts

Scored
or

out
f
round

drums

Sticking
wheel
cylinder

cups

Deformation
of
back

plate

Incorrect

adjustment
of
wheel

bearings

Incorrect

adjustment
of
wheel

aligoment

Looseness
of
leaf

spring
securing
U
bolts

Brake
fluid

has
too

low

boiling
point

Use
of

improper

linings
or

brake

linings
are

contaminated

Brake
drums
are

out
f

round

Hydraulic
connections
master

cylinder
and

wheel

cylinders
are
corroded
or

damaged

Bleed
screw
is

open

Pedal

linkage
is

binding
or

push
rod

adjust

ment
is
too

long

Master

cylinder

compensator
part
is

ob

structed

Seized
master

cylinder

piston

Poor
shoe
condition

Poor
wheel

cylinder
condition

Deformation
of

piston

cups

Poor
condition
of

caliper
because
of

faulty

piston
seals

Excessive
runaut
of
rotor

Hand
brake

will
not
return

Clogged
m

ter

cylinder
return

port

BR
20
Corrective
action

Inflate

to
correct

pressure

Readjust

Clean
brake
mechanism
and

check
for

cause

of

problem
Replace

linings
or

pads

Clean

Replace

Replace

Repair
or

replace

Adjust

F
ten
or

replace

Recondition
or

replace
brake
drum
as
re

quired
Check
for

improper

lining
contact

with

dflllll
and

grind
lining
if

necessary

Recondition
or

replace
cylinder

Replace

Adjust
or

replace

Adjust

Tighten
or

replace

Drain
and
fill

system
with

appr
d
fluid

Replace
linings

Repair
or

replace
as

necessary

Repair
as

necessary

Close
screw

and
bleed

system

Lubricate

linkage
check

pedal
return

spring

for
condition
and

adjust
push
rod
as
neces

sary

Blowout

foreign
matter
with

compresSed

air

Disassemble

master

cylinder
and

replace

piston
Bleed

system

Clean
and

repair

Repair
or

replace

Replace

Replace
piston
seals

Turn
rotor
on
lathe
or

replace

Check
and

repair

Clean

STEERING
LOCK

To

provide
tamper

proof
self
shear

type
screws
are
used
and
their
heads

are
sheared
off
when
installed

so
that

the

steering
lock

system
cannot
be

removed

easily

REMOVAL

I

Break
two
self
shear

type
screws

with
a
drill
or
other

proper
tool
Steering
System

2
Remove
two
screws
and
dismount

steering
lock
from

steering

jacket
tube

ST393

Fig
ST
5

Removing
Steering
Lock

Securing
Screw

STEERING

COLUMN

Collapsible
type

1

H
f

II

CAUTION

a
Never
in

any
case
should
undue

strass
be

applied
to

steering
column

in
axial
direction

b
Whan

installing
do
not

apply
bend

ing
force
to

steering
column

Removel

I
Remove

bolt

securing
worm
shaft

and
rubber

coupling
INSTALLATION

I

Align
steering
lock
hole

in

jacket

tube
with
the

mating
portion
of
steer

ing
lock

2
Install
self
shear

type
screws
and

cut
off
their
heads

i
4

T

C
F

Lu
J
r
1
V

F

1

Upper
bearing

2

Upper
jacket
shaft

3

Steering
post

clamp

4

Upper
jacket
tube

5
Steel
ball

6
Lower

jacket
shaft
7
Lower

jacket
tube

8
Lower

jacket
tube

flange

9

Lower

bearing

10

Rubber

coupling

11
Column

dust
cover

it

j
a

ST
422

Fig
ST
7
Worm

8lwft
Securing
Bolt

2
Remove

steering
wheel
Refer
to

Steering
Wheel

3
Loosen

screws
and
remove

upper

and
lower

steering
column
shell
covers

ST
3
ST664

Fig
8T
6

Collapsibte
Type
Steoring
Column

4
Remove

combination
switch

as

sembly

by
loosening
screws

5
Remove
baIts

securing
jacket
tube

flange
to
dash

panel

ST768

Fig
8T

8
Jacket
Tube

Flange

Securing
Bolt

6
Removeoolts

securing
oolumn

clamp

ST661

Fig
ST

9
Column

CIDmp
Securing

BoU

7
Draw
out

steering
column

assem

bly
from
the

room
side

Note
When
a
head
n
rollision
is

encountere
inspect

steeriJ
tg
sys

tem

as
allow

The

steering
system
is

very
impor

lant
unit

or

driving
The

oollapsi

ble

type
steering
column

hould
not

be
disassembled
snd
if

necessary

replace
it

a
an

assembly
Steering
System

InstaU

tlon

Iostall

steering
column
in
reverse

order
of
removal

Observe

following
instructions
See

Fig
ST
IO

I
Set
wheels
in
a

straight
ahead

position

2

Fit

steeririg
column

assembly
on

to

worm
shaft

serration

through
dash

panel
and

tighti
bolts@

temporari

ly
to

support

upper
side
of

steering

column

assembly

CAUTION

a
Mata
sure
that
undue
stress
is
not

epplied
to
ruhber

coupling

b
To
evoid

damaging
bolt
or
serra

tions

align
groove
in

worm
shaft

with
bolt
hole
in
rubber

coupling

Note

Carefully
install

so
that

punch

mark
at

top
end
o
column
slmft

acesupwardc

C

VH
3

Tighten
bolts

@
rid
then

tight

en
bolt

@

liJ

Tightening
torque

@
4
0

to
5
0

kg
m

29
to
36
ft
lb

@
1
3
to
1
8

kg
m

9
to
13
ft
lbl

4

After

sliding

jacket
tube
bracket

to

dash

panel

tighten
bolt

@
to

retain
it

liJ

Tightening
torqu

@
0
35
to
0
45

kg
m

2
5
to
3
3

ft
lbl

5

After

installation
make
sure

that

steering
wheel

turns

smoothly

5

1

Rubber
coupling

2

Steering
column

8ncmbly

3
Worm
shaft

4
Dash

panel

5

Column
shaft

6
Column
clamp

1
Jacltct
tube

flange

Tightening
torque
of

bolts
and
nuts

kg
m
ft
lb

@
1
3
to
1
8
9
to
13

@
0
35
to

0
45
2

5
to
3
3

@
4
0
to
5

0
29
to
36

ST668

Fig
ST

IO

1
alling
Sleering
Column

Aaembly

ST
4

Inspection

I
When

steering
wheel
can
not
be

rotated

smoothly
but

steering
gear

steering
linkage
and

suspension
system

are
normal
check
the

steering
system

for
the

following
matters

and

replace

faulty
parts

I
Check
column

bearings
for
dam

age
or
unevenness
If
so
lubricate
with

recommended
multi

purpose
grease
or

replace
with
a
new
one
as

steering

column
assembly

2
Check

jacket
tube
for
deforma

tion
or

breakage
and

replace
if
neces

sary

3
Check
column

spring
and
re

place
if

damaged
or

weakened

2
When
the

car
comes
into

light

collision
check

the
following
parts

and
replace
if

necessary

I
Jacket
tube

Measure
dimension
A
between

column

clamp
and

top
end
of
lower

jacket
tube

When

jacket
tube
is
crushed
dimen

sion
A
is
reduced

Column

length
A

191
mm
7
52
in

1
Jacket
tube

2
Column
clamp
ST669

Fig
ST
l1
Standard
Dimension
on

Collapsible
Column

2
Column

clamp

Measure
dimension
0
as
shown
in

Fig
ST
12

When

jacket
tube
is
crushed
dimen

sion
0
is

increased

Length
1J

Column
bracket

o

mm
0
in
Steering
System

r

1

Steering
wheel

side

1
Column

clamp

2
Block

ST679

Fig
ST

12
Standard
Dimension
B

3

Steering
wheel

Check

steering
wheel
for
axial

play

When

steering

jacket
shaft
is

crush

ed
axial

play
exists

j

Axial

direction

ST194

Fig
ST
13
mpecting
Steering
Wheel

for
Axial

Play

4
Sector
shaft

When

collision
occurs
abnormal

strength
is

applied
to

gear
arm
As
a

result
of
this
serration
of
sector
shaft

is

apt
to

be
distorted

1

Serration
of
sector

shaft

2
Gear
arm
ST195

Fig
ST

14
mpeeting
Serration

of

Sector
S

IuJft
for

Deformation

STEERING
GEAR

RB4SL

Removal

I

Remove
clutch

operating

cylinder

manual
transmission

equipped
models

only

Note

Do
not
remove
clutch
hose

from

8
cylinder

2
Remove
nuts

securing
front
tube

to
exhaust
manifold

ST
5
3
Remove
bolt

securing
V
bolt

housing
clamp
to

gusset
catalytic
con

verter

equipped
models

only

STa6l

Fig
ST
5
Clutch

Operating
Cylinder

and
Front
Tube

4

Remove
bolt

securing
front
tube

to
exhaust

mounting
bracket

1

Q
I

II
@

J
111111

ST862

Fig
ST

16
Exhau
t
Mounting
Bracktt

5

Remove
front
tube
from
exhaust

manifold

Note
Do

not
remove
front
exhaust

tube

assembly
from

catalytic
con

verter
or
muffler

assembly
Refer

to
Section
FE

ST863

Fig
ST
7
Removal

of
Front
Tube