run flat DATSUN 210 1979 Service Manual

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

t

MAINTEN
NCE

TIRE
INFLATION

Correct
tire

pressure
is

very
impor

tant
for

steering
ease
and

riding
com

fort
Correct

pressure
also
makes
for

a

quieter
ride

and
extends
tire
life

If

all
tires

are

inspected
frequently

and
maintained

at
correct

pressure

any

sharp
objects
in
tread
can
be

quickiy
detected
nd
abnormal

wear

which
invites
serious

problems
can
be

avoided

After

inflating
tires
valves

should

be
checked
for

leakage
Without

valve

caps
leakage
will
occur

due
to
dirt
and

water

resulting
in

underinflation
Ac

cordingly
whenever
tire

pressure
is

checked
be
sure
to

tighten
vaive

caps

firmly
by
hand

JW

Sri

in

1
II

I

i

I
1
I
1

1
I

I

I
II

I
I
I

i

M
I

l
1

14
nl

01
I

II

Toe

in
or

toe
out
wear

I
J

I

I
p

rt
i

Ilnl
lll

11111
IllIlI

Shoulder
wear

Toe
in
or
toe
out

wear

When
the
front

wheels
are
aligned

in

an
excessive

toe
in
or

toe
out
condi

tion

the
tires

will
tend
to

scrape
the

tread
rubber
off
and
the
tread
will

de

elop
a

feathered

edge

Center
wear

Center
wear
is
caused

by
overinfla

tion
of
the
tire
Wheel
and

Tire

WHEEL
AND

TIRE

TIRE
WEAR

Tread
ar
Indicator

Tires
are

provided
with

tr
lad
wear

indicator
at

six

places
around
tire

circumference

indicating
1
6

mm

J

in
tread

depth
When
tires
wear
and

then

marks

appear
replace
them

wtth

new
ones

Tread
wear
indicator

Tire
tread

L
1
c

WH024

Fig
WT
l
Tread
WearJndicator

n

1

ii

J
J

f
J

I

h
I

me

1111

Center
wear

j

I

1II
mnr

I

j
n

Ii

Ii

i

I
Jil

111

lie

Uneven
wear
WT004

Fig
WT

2
A
bnormal
Tire
Wtor

Shoulder
wear

This
wear

may
be
caused

by
under

inflation
incorrect
wheel
camber
or

continued
excessive

speed
around

curves
In

general
the
first
two
causes

are
the

most
common
Underinflation

causes
wear
on
both
sides
of
treads

while

camber
causes
wear
on

only
one

side
of
tread

WT
2
Uneven
wear

Uneven
wear
is

caused

by
incorrect

camber
or
caster

malfunctioning
sus

pension
unbalanced
wheel
out
of

round
brake
drum
or
other
mechani

cal
conditions
To

stop
this
abnormal

wear
correct
the
above

faulty
parts

TIRE
REPLACEMENT

CAUTION

Different

types
of
tires
sucb
as
bias

bias
belted
and
radial

tireS
must

not

be
mixed

except
in
an

emergancy

Mixed

use
of
different

types
of
tires

can

adversely
affect
car

ilndlilig
and

may
cause
driver
to
lose
control

Note

a
Be

sure
to
check
the
wheel

nut

torque
after
the
wheel
has
been

run
for

the
rust
I
000
km
600

miles
also
in

cases
of

repairing
fiat

tires
tire
rotation
etc

and
every

10
000
km

6
000
miles
thereafter

Retighten
if

necessary

b
It
is

recommended
that
new
tires
be

installed
in

pairs
on
the
same
axle

When

replacing
only
one
tire
it

should
be

paired
with
the
most

tread
to

equalize
braking
tl1lction

c

When

replacing
original
tires
with

those
tires
of
an

optional
recom

mended
site
and
of

diff
rent
diam

eter
the

speedometer
must
be
reo

calibrated

I

To

replace
a
tire

with
a

jack
in
a

safe
manner
refer
to

Lifting
Points

and

Towing
Section
GI
for

jacking

up

WARNING

Never

get
under

car
whila

it
is

supported

only
by
jack

Always
use

Il
fety
stands
to

suppon

side
member
of

body
construction

when

you
must

get
berreatb
car

The

symptom
of
unbalance

appears

as

tramps
car

shake
and

steering
mal

function

To
correct
unbalance
use

proper

wheel
balancer

Maximum

allowable

unbalance

at
rim

flange

10

gr
10
35
ozl

Balance

weight

10
to
60

gr
10
35
to
2

12
ozl

at
10

gr
10
35

ozl
interval

Note

a
Be

sure
to

place
correct
balance

weights
on
inner

edge
of
rim

See

Fig
wr
6

b

Do
not

put
mOle
than
two

weights

on
each
side

c
Two

types
of
balance

weights
are

used
one
is

designed
for
use
with

steel
wheel

and
the
other
for

use

with
aluminum
wheel

Do
not
mix

different

types
of
balance

weights

WHEEL

In
order

to
ensure

satisfactory

steering
condition
as
well

as
maximum

tire

life

proceed
follows

Check
wheel
rim

especially
rim

flange
and
bead
seat
for
rust
distor

tion

cracks
or
other
faults
which

might
cause
air

leaks
Function
of

tubeless
tire

depends
on
a

good
seal

between
tire

bead
and

wheel
rim

Thoroughly
remove
rust
dust
oxi

dized
rubber
or

sa
nd
from
wheel
rim

Note
Rim
bead
seats
should
be
clean

ed
with
the

following

Steel
wheel

Wile
brush
coone
steel
wool

etc

Aluminum
wheel

Neutral

detergent
cloth
etc

Use
dial

gauge
to
examine
wheel

rim
for
lateral
and
radial
runout
Wheel
and
Tire

Lateral
and

radial
runout

Steel
wheel

less
than
1
2
mm
0
047
in

Aluminumwlte
1

lass
than
0
5
mm

10
020
in

Difference

right
and
left

lateral
runout

Steel
wheel

leu
than
0
5
mm

10
020
in

Aluminum
wheel

less
than
0
2
mm
0

008
in

C
JeCk
points

l

Fig
WT

6
WT005

Whee
Rim
RUllout
Check

Points

Wheel
must
be

replaced
when

any

of
the

following
problems
occurs

I

Bent
dented
or

heavily
rusted

2

Elongated
bolt
holes

3

Excessive
lateral
or
radial
runout

4
Air

leaks

through
wel
s

5
Wheel
nuts

won
t

stay
tight

TIRE

To

check
for
leaks

apply

soapy

solution
or

submerge
tire
and
wheel
or

tub
in
water
after

inflating
it
to

speCified
pressure
Special
inspection

for
leaks
should
be

carried
out
around

valve

or
wheel
rim
and

along
tread

Note
bead

and
rim

where

leakage

0

11rs

Wipe
water

away
from

any

area
which
leaks
air

bubbles
and
then

mark

place
with
chalk

After

removing

object
which
caused

puncture
seal
the

pain
Wilen
repair

ing
a

puncture
use
a
tire

repair
kit

furnished

by
any
tire
dealer

following

WT
4
inslrt1ctiol
iplovided
with

tit
If

a

puncture
is
too

large
or

there
is

some

damage
to
tire

fabric

repair
should
be

carried
out

by
authorized
tire

dealer

Discard
when

any
of
the

following

problems
occurs

I

Broken
or

damaged
bead
wire

2

Ply
or
tread

separation

3
Worn
fabric

damage
on

tubeless

tire

4

Cracked
or

damaged
side
wall

5

Tires
with
tread
wear
indicator

showing
etc

Note

a
When

discarding
tire
take
extra

care
not
to

damage
tire
bead
rim

flange
and
bead
seat

Do
ot

use
tire
irons
to
foree
beads

away
from
wbeel
rim

flange
that
is

always
use
tire

replacement
device

whenever
tire
is
removed

b
Install
wive
core
and
inflate
to

proper
pressure
Check
the

locating

rings
of
the
tire
to
be
sure

they

show
around
the
rim

flanges
on

both
sides

WARNING

When
while
tire
is

being
inflated

bead

snaps
over

safety
hump
it

might
break
Thus
to
avoid
satious

personal
injury
never
stand
over

tire
when

inflating
it
Never
inflate

to
a

pressure
greater
then
2
8

kg
em
40

psQ
If

beads
fail
to

seat
It
that

pressure
deflate
the

tire
lubricate
it

again
and
then

reinflate
it
If
the
tire
is
ov

inflated
the
bead

might
break

pos

sibly
resulting
in

serious
persona

injury