check oil DATSUN 210 1979 Service Manual

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

Remove
bias

ring
from

piston
A

S

Remove

retaining
rings
and
boots

at
the
end

of
both

pistons
A

and
B

I

Biuring

2

Boot

3

Retaining
ring

BA567

Fig
BR
15

Cylinder

Body
and
Pi
tan

6

Force
out

pistons
from

cylinder

by
feeding

compressed
air

gradually

WARNING

Gradually
increase
air

pressurs
10

that

piston
does
not

pop
out

7

Remove

piston
seals

CAUTION

Be
careful

not
to

damBlle
piston
and

cylinder
boily

8
Remove

yoke
spring
from

yoke

INSPECTION

Clean
au

parts
and
check
u
fol

lows

CAutiON

Use
brake

fluid
to

claan
Never

use

minersl

oil

Cylinder
bod

1

Check

inside
surface
of

cylinder

for
score
rust

wear

damage
or

pres

ence
of

foreign
substances
If

any

surface
fault
is
detected

replace
cyl

inder

body

2
Minor

damage
from
rust
of

foreign
substances

may
be
eliminated

by
polishing
surface

with
a
fme

emery

cloth
If

damage
is

major
cylinder

assembly
must
be

replaced
Brake

System

Yoke

Check
for
wear
cracks
or

other

damage

Replace
if

any
fault
is

de

tected

PIston

Check

piston
for
score
rust
wear

damage

orpresenco
of

foreign
sub

stances

Replace
if

any
fault
is

de

tected

CAUTION

Piston

sliding
surface
is

plated
00
not

polish
with

emery
peper
even
if

rust
or

foreign
matter

is
sticked
on

sliding

surface

PIston
seal
end
dust
seel

Replace
piston
seal
and
dust
seal
at

each

dis
mbly

ASSEMBLY

1

Apply
rubber

grease
to

cylinder

bore

and
install

piston
seal

2

Insert
bias

ring
into

piston
A
so

that
the

roundish

portion
of
it

faces

the
bottom
of

piston
A

bore

I

ID

J

if
C

jt

11

e

1

@

I

j
BA

I
Roundish

portion
3
Chamfer

2
Piston
A
4
Yoke

Fig
BR

16

A
embly
af
Bia

Ring

to
Piston

A

CAUTION

a

Be
careful
not
to

mistaka

piston
B

for

piston
A

b

Pistons
A

and
B
are

distinguished

from
each

other

by
a

dent
at
the

inner

bottom
of

piston
A

BR
8
Piston
A

Piston
B

BR41S

Fig
BR
17

Pisto
A
and
B

Note
Bias

ring
must

be
instaDed
on

the

original

position

3

Apply
rubber

grease
lightly
to
the

sliding

portions
of

pistons
and
insert

into

cylinder

Note

a
Insert

pistons
A

and
B

from

each

outside

b
When

inserting
pistons
be
careful

not

to
insert
too
far
Refer

to
Pad

Replacemeni

c
Install

piston
A

so
that

yoke

groove

of
bias

ring
of

piston
A
coincides

with

yoke
groove
of

cylinder

4

Instau

boot
and

retaining
ring

S
Install

yoke
springs
an

bias

ring

on

yoke

Front
face

1
1
0

Rear
face

BA416

1
Bias

Sprinl

2
Yoke

spring

Fig
BR
18
Yoke
with
Yoke

Spring

INSPECTION

Brake
drum

I
Check
inner
diameter
of
brake

drum
to
make
sure

it
is

properly
round

and

tapered
If

it
is
not

repair
or

replace
brake

drum

Inner
diameter

Standard
diametel

203
2
mm
8

in

Maximum
diameter

204
5

mm
8
05
in

Out
of
loundness

ellipticity

less
than

0
02
mm
0
0008
in

Radial
runout

less
than
0
1
mm
0

004
in

Total
indicator

reading

Taper

less
than

0
02
mm
0
0008
in

Measured

at
a

point
40

mm

1
57
in
flam
inlet

2

Contact
surface
with

which
lin

ings
come
into

contact

should
be

fine
finished
with

No
120

to
150

sandpaper

3

Using
a
drum
racer
finish
brake

drum

by

machining
if
it
shows

any

sign
of

score
marks

partial
wear

or

stepped
wear
on
its

contact
surface

Note

After
brake
drum
has

been

completely
re
conditioned

or
re

placed
check
drum
and
shoes
for

proper
contact

pattern

Brake
e

embly

1

Replace
any
linings
which
are

cracked
worn

or
oil
stained

2
If

lining
is
worn

to
less
than
the

specified
value

replace

Lining
wear
limit

Minimum

thickness

1
5

mm
0
059

in

3

Replace
any
shoe
return

springs

which
are

broken
or

fatigued

4

Replace

fatigued
anti

rattle

spring

damaged
pin
and
or
retainer

Wheel

cylinder

I

Replace
any
cylinder
or

piston

which
is

scratched

scored
or

worn
on

its

sliding
contact
surface
Brake

System

2

Replace
worn

parts
if

piston
to

cylinder
clearance
is

beyond
limit

Piston
ta

cylinder
clearance

less
than
0
15
mm
0

0059
in

3

Replace
any
piston
cup
which
is

worn

or
otherwise

damaged

4

Replace
if

contacting
face
of

cyl

inder
and
shoe
is
worn

locally
or
in

step

5

Replace
any
damaged
dust
cover

fatigued
piston
spring
or

faulty
thread

ed

parts

6

Replace
any
tube
connector

which
is

worn
on
its

threaded

portion

INSTALLATION

Install
rear
brake
in
reverse
order

of

removal

closely

observing
the
follow

ing

1

Tighten
following

parts
to

speci

fied

torque

CAUTION

When

installing
brake
tube

use
Flare

Nut

Torque
Wrench

6694310000

ifl

Tightening
torque

Flared
nut

1
5
to
1
8

kg
m

11
to
13
fHb

Ail
bleedel

0
7
to
0
9

kg
m

15
1
to
6
5
ft
Ib

Wheel

cylinder

mounting
bolt

0

6
to

0
8

kg
m

4
3

to
5
8
ft
b

2
There
are

two

types
of

adjusters

which
have

right
thread
or
left
thread

R
H
brake

Right
thread

adjuster

L
H

brake

Left
thread

adjuster

3

Sparingly

apply
a
coat
of
brake

grease
to
the

following
points

Lubricating
points

e

Adjuster
nut
and
rod
threads

Mating
surfaces

between

adjuster

and

toggle
lever
and

pin
and

roller

BR

ll
0

J

o

BR
117
A

Fig
BR
24

Lubricating
Points

of

Adju
ter

4

Referring
to

Fig
BR

25
for

locations
of

lubricating
points
apply
a

coat
of
brake

grease
to
these

points

Exercise

care
not
to
allow

grease
to

come
into

contact
with

lining
or
ad

juster
screws

Lubricating

points

e

Contact
areas

between
wheel

cyl

inder
anchor
block
and
brake
shoe

e

Mating
surfaces
between
brake
shoe

and

brake
disc

Contact
areas

between
hand
brake

adjuster
and
brake

shoe

Contact
areas
between
brake

disc

brake

shoe
and

toggle
lever

Contact
areas
between

anti
rattle

pin

spring
retainer
and

brake
shoe

Fig
BR
25

Lubricating
Points

5

To

prevent
water
from

entering

brake
drum

apply
dry
sealant
to

brake

disc

mounting
surfaces
of
the

follow

ing

parts

Wheel

cylinder

Anti
rattle

spring

6
Make

sure
that

entire
brake

shoe

fits
in

place

7

Make
sure
that

adjuster
operates

properly

8
After
installation
is

completed

check
and

adjust
shoe

to
drum
clear

ance

by
operating
hand
brake
several

times

9

Bleed
brake

system

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

Relationship
between
oil

pressure

and

pedal
operating
force
is

illustrated

in

Fig
BR

29
If
test

results
are
not

as

specified
in

Fig
BR

29
check
brake

booster
for
condition
in
manner
des

cribed
under

Inspection
before
re

moval
of

this
unit

REMOVAL
M60

120
1
710

AA
I
1

1

110
1
560
1
v

e
100

1
420
I

90
1

280
I
1

1

80
1
140
I
Z

I
t

70
1

000
i

60
850

I

o
50
710
d

40
570

g
i

gl

j
ll
10

140

J
0

1
0

2
0

221
441

Rod

operating
force

kg
lb
Brake

System

Also

check
brake
line
for

evidence

of
fluid

leakage

Note

Detennine
whether
source
of

problem
is
in
brake
booster
or

check
valve
Before

you
reach

a

fmal
conclusion

always

inspect

check
valve
first

o
10
20

30
40
50

22
44

66
88
110

Pedal

operating
force

kg
lb

BA121A

Fig
BR
29

Performance

Diagram
of
Brake
Booster

Remo

parts
in

numerical
order

enumerated

BR593
ti

J

Fig
BR
30
Procedures

for
Removing

Brake
Booster

ADJUSTMENT

I

Adjust
the

length
of

push
rod
to

the

value
indicated
below

Length
ad
justment
of

push
rod
is

made
at
the

tip

of

push
rod

Length
A

9
75
to
10
00
mm

0
3839

to
0
3937
in

j
f

Irl

I

l
if

L
J

BA290

Fig
BR
31

Length
A

BR
13
BR288

Fig
BR
32

Adjusting
Push
Rod

Length

2

Install

clevis

Adjust
length
of

operating
rod
to

specified
value

length
B

135
mm
5
31
in

c
f

lIJ
t

t

B

BR947

Fig
BR
33

Length
B

INSTALLATION

Install

in
the

reverse

sequence
of

removaJ

IiJ
Tightening

torque

Master

cylinder
to
brake
booster

0
8
to

1
1

kg
m

5
8

to
8
0
ft
Ib

Brake
booster
to

body

0
8

to
1
1

kg
m

5
8

to
8

0
ft

lbl

Note

After
brake
boOster
is

properly

installed
in

car
conduct
an
air

tight

and

op
rational
tests
as

previously

described

Brake

System

TROUBLE

DIAGNOSES

AND
CORRECTIONS

Condition

Excessive

pedal
travel

Spongy
pedal

Poor

braking
effect
Probable
cause

Low
brake
fluid

level
or

empty
master

cyUnder
reservoir

Leakage
in

master

cylinder

Deteriorated

check
valve

Air
in

system

Faulty
brake

adjustment

Excessive
lateral

play
on
disc
caused

by

loose
or
worn
wheel

bearings
or

steering

parts

Low

fluid
level
in
master

cylinder

Air
in

system

Faulty
brake

adjustment

Reservoir
fIller

cap
vent
hole

clogged

Swollen
hose
due

to
deterioration

or
use
of

poor
quality
hose

Distored

brake
shoes
or

excessively
worn

or

cracked
brake
drum

Soft
or
swollen

caliper
seals

Use
of
a

brake
fluid

with
too
low

boiling

point

Fluid

leakage
in
brake
lines

Low

brake
fluid
level
or

empty
master

cylinder
reservoir

Air
in
brake

lines

Excessive
shoe

to
d
rum
clearance

Grease

oil
mud
or
water
on

linings
or

pads

Deterioration
of

linings
or

pads

Local
fit

of

linings
or

pads

Linings
or

pads
excessively
worn

Master

cylinder
or

wheel

cylinders
in

poor

condition

Frozen
or

seized

caliper
pistons
on
disc

brakes

Finding
mechanical

linkage
at
brake

pedal

and
shoes

BR
19
Corrective
action

Fill
and

bleed
as

necessary
Test

for
source

of

leakage

by
examining
all
lines

connec

tions
and
wheel

cylinder

Overhaul
master

cylinder

Replace
check

valve
and
bleed

system

Bleed

system

Adjust
shoe
to
drum
clearance

Inspect

auto

adjuster
operation

Replace
or

adjust

faulty
parts

Top
with
fluid
and

inspect
for

leakage

Correct
as

necessary

Adjust
shoe
to
drum
clearance

Inspect

auto

adjuster
operation

Clean
and
bleed

system

Replace
hose
and
bleed

system

Replace
faul

ty
parts

Drain

hydraulic

system
flush
with
alcohol

and

replace
all
seals

Replace
with

specified
brake
fluid
and

bleed

system

Check
master

cylinder
p
pmg
and

wheel

cylinder
for
leaks
and

repair

Fill
and
bleed

as

necessary

Bleed

system

Adjust

Clean
brake
mechanism
and
check
for

cause

of

problem
Replace

linings
or

pads

Replace

Shave
or

replace

Replace

Repair
or

replace

Disassemble

caliper
and
free

up
as

required

Free

up
as

required

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

Condition

Brakes

drag

Brake
chatters

Brake

squeals

Pedal

pulsates

Rear

lock

under

light
brake

pedal
force

Rear

lock

under

heavy
brake

pedal
force
Brake

System

Probable
cause

Clogged
brake
lines

Incorrect

adjustment
of
wheel

bearings

Improper
shoe
to
drum
clearance

Weak
shoe
return

springs

No

free
travel
in

brake
shoe
return

Groove

or
out
of
round
brake
drum

or
rotor

Loose

or
bent

support
plate

Distorted

brake

shoes
or

pads

Grease
or

brake
fluid
on

linings

Dirty
or
scored

brake
drums

Distorted
brake
shoes

or
bent

support
plate

Weak
or
broken
brake
shoe

retaining
spring

or
return

spring

Glazed
or

contaminated
brake

lining

Out
of
round
or
off
center
drum

On

disc
brakes
lateral
runout
of
brake

rotor

is

excessive

Excessive
variation
in

thickness
of
brake

rotor
surfaces

Improper
tire

pressures

Excessive

wear
of

tires

Faulty
NP
valve

Improper
tire

pressures

Excessive
wear
of
tires

Poor

front

braking
effect

Grease
oil
mud

or
water
on

linings

or

pads

Excessive
wear

of

linings
or

pads

Local
fit
of

linings
or

pads

Master

cylinder
or

wheel

cylinder
in

poor

condition

BR
2t
Corrective
action

Check
and
clean

Adjust
or
repair

Adjust

Replace

Adjust

pedal
height

Grind
or
replace
as

required

Tighten
support
plate
bolts
to

specified

torque
or

replace

plate

Replace
as

necessary

Replace
linings

Blowout

assembly
with

compressed
air

or

refinish
drum

Replace
faulty
unit

Replace
if

faulty

Cam

ground
lining
to
elilninate

glaze
If
it

doesn
t

replace
linings

Turn
drum
or

replace
as

necessary

Check
with
dial
indicator

turning
disc

by

hand
If
runout
exceeds

specifications
re

place
disc

Measure
around
disc
face
with
micrometer

Replace
disc
as

required

Check
and

adjust

Check
and

replace

Replace

Check
and

adjust

Check
and

replace

Clean
or

replace

Replace

Shave
or

replace

Repair
or

replace

CAUTION

a
Be
careful
not
to
allow
ball
nut
to

run
down
to
either
end
of
worm

The
ends
of
ball

guides
will
be

damaged
if
nut
is
rotated
until
it

stops
at
the
end
of

worm

b
00
not
detach
ball
nut
from

worm

shaft

assembly
If

necessary
replace

assembly

c
Do
not

remove
sector
shaft
bush

ings
from

steering
gear
housing

If

necessary
replace
gear
housing

assembly

d
Be
careful
not
to
allow

penetration

of

any
other
element
like
dust
or

dirt

Inspection

Wash
clean
all
the
disassembled

parts
in

cleaning
solvent
and
check
for

condition

Sector
shaft

I
Check

gear
tooth
surface
for

pitting
burrs
cracks
or

any
other

damage
and

replace
if

damaged

2
Check

sector
shaft
for
distortion

of
its
serration

and
if

necessary
re

place
In
this

case
be
8ure
to
check

gear
housing
and

steering
worm

as

sembly
for
deformation

Steering
worm

assembly

I

Inspect
ball
nut

gear
tooth
sur

face
and

replace
if

pitting
burrs

wear

or

any
other

damage
is
found

2

Ball
nut
must
rotate

smoothly
on

worm

gear
If
found
too

tight
as

sembly
should
be

replaced
Check
as

follows

I

Move
ball
nut
to
either
end
of

worm

gear
and

gradually
stand

worm

shaft
and
ball
nut

assembly
until
ball

nut

moves
downward
on
worm

gear

under
its

own

weight

2
In
the

above
test
if
ball
nut
does

not
move

freely
over
entire

stroke

assembly
may
be

damaged
Replace

with

a
new
one

Note
In
this

inspection
be
careful

not
to

damage
ball
nut

guide
tube
Steering

System

ST037

Fig
ST
22
In

pecting
Steering
Worm

and
Ball
Nut

A8sembly

Bearings
and

bushings

I

Inspect
worm
bearing
for
wear

pitting
or

any
other

damage
Replace

with
a
new
one

as

required

Note
When

replacing
worm

bearing

replace
it

as
a
set

of
bearing
and

outer

race

2

If
sector
shaft

bushings
in

gear

housing
are
found
worn
or

damaged

replace
as
an

assembly
of

gear
housing

and

bushings

Oil
seals

Discard
oil
seal
which
is
once
re

moved

Replace
oil
seal
if

sealing
lip
is

deformed

or
cracked
Also
discard
oil

seal
if

spring
is

fatigued
or
dislocated

Assembly
snd

adjustment

Assemble

steering
gear
in
reverse

order
of

disassembly
Observe
follow

ing
instructions

Clean
all

parts

2
Lubricate

bearing
turning
surface

gear
surface

gear
tooth
and
other

sliding
parts
with

clean

gear
oil

3
Fill

space
between

sealing
lips
of

new
oil
seal
with
recommended
multi

purpose
grease
and
fit
it

to

gear

housing
and
rear
cover

Note

a
To

facilitate
installation
coat

seal

contacting
face
of
oil
seal
with

gear

oil

b
Press
oil
seal
into

place
with
its

lettered
side

facing
outside
of

gear

housing
or
rear
cover

5T
7
CAUTION

Be
careful
not
to
assemble
with

any

other
element
like
dust
or
dirt

Adjustment
of
worm

bearing

preload

4

Properly
position
steering
worm

assembly
in

gear
housing
with
worm

bearings
Install
rear
cover
on

gear

housing
with
worm

bearing
shims

fJ
Tightening
torqu

Rear

coyer

2
0

to
3
0

kltm

14
to
22
ft

Ibl

Note
Be
sure
to
install
the
thicker

shUn

on

gear
housing
side

Standard
shim
total
thickness
is
1
5

mm
0
059
in

Available
worm

bearing
shUn

No
Thickness
mm
in

I
0
762
0
0300

2
0
254

0
0100

3
0

127
0
0050

4
0

050
0
0020

5

Selecting
suitable

bearing
shims

adjust
worm

bearing
preload
with

Drive
Pinion
Preload

Gauge

ST3I
27S000

Initial

turning
torque

Worm

bearing

4
0

to
6
0

kg
m

3
5

to
5
2
in

bl

Note

a
Rotate
worm

shaft
a
few

turns
in

both
directions
to

settle
worm

bear

ing
in

and
measure

preload

b
When

adjusting
worm
bearing

pre

load
add
and
then
remove

shim
s

until
correct

adjustment
is

achieved

REMOVAL

I
Jack

up
the
front
of
car
and

support
it

on
the

safety
stands

2
Remove
cotter

pins
and
nuts

fastening
side
rod
ball

studs
to
knuckle

arms

3
To

detach
side
rod
ball

studs

from

knuckle
arms

iJuert
Steering
BaII

Joint

Remover
HT72520000
between

them

and

separate
them

ST675

Fig
ST
28

Remouing
Ball
Joint

4

Remove
ball

studs
of
cross
rod

from

gear
arm

and
idler
arm
from

cross
rod
in
the

same
manner

as

descnbed
in

step
3
above

Cross
rod

and
side
rods
can
be

removed

as
an

assembly

5
Remove

idler

assembly
from
side

member

by

taking
off
two

fixing
bolts

Note

Steering

linkage
assembly
can

be
removed
from

CIC

by

rem
mng

gear
arm
from
sector

shaft
with

Steering
Gear

Arm
Puller

ST2902000

I
and

by

removing
idler

assembly
from
side
member

INSTAllATION

I

Install

steering

linkage
in
the

re

verse
order
of

removal

iJJ
Tightening
torque

Il8l1ltud

3
0
to

7
0

q
m

122
to
51
ft

Ibl

Idler

body
to
frame

bolts

7
0

to
8

0

q
m

151
to

58
ft

Ibl

2
Check
wheel

alignment
and
if

necessary
adjust
Refer
to
SectionF
A

DISASSEMBLY

I

Disconnect
both

side
rods
from

the

cross
rod

following
the

procedure
Steering
System

for
removal
of
the
side
rod
ball

joints

at
knuckle
arm
sides

2

Remove
the
idler

arm
nut
and

disassemble
idler

assembly

ASSEMBLY
AND

ADJUSTMENT

A
mble
st

rwg
linkage
in
the

reverse
order
of

disassembly

observing

the

following
instrucitons

Ban

Joint

Before

installing
a

new
dus
cover

be
sure
to

pack
with
the
recommended

grease

t
J
Tightening
torque

Ballltud

3
0

to
7
0

kg
m
122

to
51
ft
lbl

Note

a
When

tightening
ball
stud
be
care

ful
not
to

aBow

grease
to

get
On
its

tapered
section

b

Tighten
nut
to
the

specified
torque

and

align
the
cotter

pin
holes
in
the

tightening
direction

c
Be

sure
to
insert
new
cotter

pin
and

bend

it

securely

Idl
r
rm
mbl

Assembly
of
the
idler

arm
assembly

is

accomplished
as
follows

I

Apply
recommended

grease
to

the

sliding

portion
of
idler
arm
and

rubber

bushing

2

Apply
soapy
water

on
the

outer

circumference
of

bushing

Pre
ss
the

bushing
into

idler

body

carefully
until
the
bushin

protrudes

iJJ
Tightening

torque

Idler
nut

5
5
to
7
0

q
m

4010
51
ft

Ib

Note
When

installing
rubber

bushing

use
care
not
to
allow

grease
or

oil

Hj1

ST

10
to

get
on
its
onter
surface

ST676

Fig
ST
29
Idler
Arm

Cro
rod
nd
Id
rod

I
When

side
rod

sockets
and
side

rod

adjusting
tube

are

separated

adjust
side
rod

length
correctly

Adjustment
should
be
done
be

tween
ball
stud
centers

Standard
distance
AU
between

inner
and
outer
ballltud

conte

315
mm
12
40
in

Note

a
Standard
distance
A

i
an

ap

proximale
value
to

adjust
toe

in

descnbed
in
Section
FA

Maire
sure
tbat

specified
toe
in

is

obtained
with
O
OSs
and
side
rods

installed

on
car

ReadjUst
if

Specified
toe

in
is

not

obtained

b
Be

sure
to
screw

adjusting
bar
in

clret

evenly

c
Make

sure
that

adjusting
bar
is

screwed
in
socket
20
mm
0
79
in

or

more

I

lf

A

ST
77

Fig
ST
30
Standard
Side
Rod

Length