wheel alignment DATSUN B110 1973 Service User Guide

CHASSIS

Tire
rotation

Tires

wear
unevenly
and
become
unbalanced

according

to

running
distance
Uneven
tire
wear

often
results
in
tire

noise
whkh
is
attributed

to
rear
axle

gears
bearing
ell

Meanwhile

the
front

tires
tend
to
wear

unevenly
because

of
front
wheel

alignment

Accordingly
to

equalize
tire
wear
it
is

necessary
to

rotate

tires

every
10
000
km
6
000

miles
of

operation

RIGHT
FRONT
RIGHT
REAR

r

1

Xl
L

J

LEFT
FRONT
LEFT
REAR

Fig
WT
2
Tire
rotation

The
tires
are

provided
with
tread

wear
indicator
at

six

places
around
tire

circumference

indicating
1
6

nun

0
16
in
tread

depth
When
the

tires
wear
and
then

the
marks
a

ppear
replace
them
with

new
ones

TREAD
WEAR

INDICATOR

7
TREAD

m
Y
X
W

X

v

w

WH024

Fig
WI

3
Tread
wear
illdicator

To

change
tire
with
wheel

using
a

jack
in
the

safe

manner
observe
the

following
procedures

I

Apply
parking
brake
and
block

front
wheels
when

rear

wheel
is

being
changed

2
Remove
wheel

cap
and
loosen

wheel
nuts

3

Place

jack
at

jacking
point
instructed
under
General

Information
and
raise
car
until

wheel
clears

ground
4
Remove
wheel
nuts
and
whed
from
drum

5

To
install
wheel
reverse
the
above

steps
Tighten

whed
nuts
in
criss
cross
fashion
to
8
0

to
9
0

kg
m

58
to

65
ft
lb

Note
Never

get
under
the
car

while
it

is

supported
only

by
the

jack
Always
use
safety
stands
to

support

the
side
member
of

body
construction
when

you

must

get
beneath
the
car

INSPECTION

Wheel
balance

The
wheel
and
tire

assembly
should
be

kept
balanced

statically
and

dynamically

Proper
tire
balance
is

necessary
when

driving
the
car
at

high

speeds
Consequently
the
wheel
and
tire

assembly

should

be

properly
rebalanced
whenever

puncture
is

repaired

The
wheel
and
tire

assembly
becomes
out
of
balance

according
to
uneven
tire
wear

Severe
acceleration
and

braking
or

fast

cornering
is
the

cause
of
wear
on
tire

resulting
in
unbalance
of
tire
and
wheel

assembly

The

symptom
of

unbalance

appears
as

tramp
car
shake

and

steering
trouble

To
correct
unbalance
use

proper
wheel
balancer

Maximum
allowable
unbalance

165

gr
cm
2
3
in

ol
at
rim
circumferences

Balance

weight

10
to
70

gr
0
35

to
2
47
Ol

at
10

gr
0
35

Ol
interval

Note
Be
sure
to

place
the
correct
balance

weights
on

the

inner

edge
of
rim

as
shown
in

Figure
WT
4

Wheel

and
tire

In
order

to
ensure

satisfactory
steering
condition
as

well

as
maximum
tire
life

proceed
as
follows

I

Check
wheel
rim

especially
rim

flange
and
bead

seat

for
rust
distortion

cracks
or
other
defects
which

might

cause
air
leaks
Function
of

tubeless
tire

depends
on
a

good
seal
between
tire

bead
and
wheel
rim

Thoroughly

remove
rust
dust

oxidized
rubber
or

sand
from
wheel
rim

with
wire

brush

emery
cloth
or

paper
Use
dial

gauge
to

examine

wheel
rim
for
lateral
and
diametral
run
out

WT
4

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

Tire
squeals

DATE
CHASSIS

Improper
wheel

alignment

Excessively
distorted
or

improperly
installed

suspension
link

High
speed
on
curves

Sudden
start
and

improper
speeding
due
to

rapid
acceleration

or

improper
brake

appli

cation

Improper
tire

pressure

Improper
front
wheel

alignment

Distorted

knuckle
or

suspension
link
Realign

Repair
correctly
or

replace
if

necessary
or

reinstall

correctly

Reduce

speed

Follow
correct
and

proper
driving
manner

Measure
and

adjust
correctly

Realign
correctly

Repair
or

replace
if

necessary

SERVICE
JOURNAL

OR
BULLETIN

REFERENCE

JOURNAL
or

BULLETIN

No
PAGE
No

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

WT
6
SUBJECT

STEERING

6

Adjust
the
backlash
at

the
neutral

point
by
screwing

the

adjusting
screw
so
that
the
movement
of
the

gear
arm

top
end

radius
7
mm
5

00
in
is
within
0
1
mm

0
0039

in
and
lock

temporarily
by
the
nut

Fig
ST
12

Checking
backlash

Fig
ST

13

Adjusting
backlash
7
Fill

gear
oil
about
0
24
liter

I
2
US

pt
3
8

Imp
pt
into

assembly
through
f1ller
hole
and

install
a

mIer

plug

INSTALLATION

Installation
can

be

accomplished
in

the
reverse
order

of

removal

Pay
attention

to
the

following
points

I
Make

sure
that
the

steering
wheel

moves

smoothly

2

Check
the

alignment
of
the

steering
wheeL

3

Free
travel
of

steering
wheel

should
be
20

to
25
mm

0
787
to
0

984
in

COLLAPSIBLE
STEERING

CONTENTS

DESCRIPTION

STEERING
COLUMN

JACKET

TUBE

STEERING
POST
CLAMP
ST
8

ST
9

ST
10

ST
11
COLUMN
BEARING

DISASSEMBL
Y

INSPECTION

REASSEMBL
Y
ST
12

ST
12

ST
12

ST
13

ST
7

CHASSIS

The

following
tightening
torque
of
nuts

shall
be

adopted

Ball
stud

nut

3
0
to
5
0

kg
m

21
7
to

36
2
ft

lb

Gear
arm
nut

14

kg
m

101
ft
lb

Idler
arm

nut

57
to
6
3

kg
m
41
2

to
45
6

ft
lb

2

Assembly
of

the
idler

assembly
is

accomplished
as

follows

I
Apply
soap
water

on
the

outer
circumference
of

bushing

Press
the

bushing
into
the
idler

arm

carefully
until
the

bushing
protrudes
equally
at
the
both

sides

2

Fit
idler

arm

body
in
the
rubber

bushing

Keep
the

idler
arm
center
line
in

parallel
with
the

chassis
center
line

INSTALLATION

Installation
can
be

accomplished
in
the
reverse

order
of

removal

Pay
attention
to

the

following

points

Set
the

length
of
both
side

rods
to

296
8
mm
11

69

in
It
should
be
done

between
the

ball
stud
centers

2

Check
wheel

alignment
and

if

necessary
adjust
it

ACCIDENT
COLLISION

When
accident
collision
occurs

unfortunately
and

the

vehicle

especially
its
front
unit
is

damaged
conduct

inspection
in

accordance
with
the

following
instruction

Inspect
the

steering
system

particularly
carefully

because
it
is
a

very
important
unit
for

driving

I

Check
both
side

steering
angles
for
correct
balance

2

With
the
tires

positioned
at
neutral

steering
wheel
bar
for

correct

position
check
the
l
3

Operate
the

steering
system
and
check

it
for

sliding

noise

4

Check
the

operation
for
smoothness

l
5
Check
the

side
rod
and
cross

rod
for

bending

6
Check
the

gear
arm

for
crack

7
Check

the

gear
housing
tiglltening
bolt
for
slackness

and

installation
boss

for
crack

8

Check
the

sector
shaft
serration

for

twisting

9

Check
the
sector

gear
for

crack

10

Check
the

ball
screw

for

pitting

II

Check
the

column
shaft
for

bending
crack
and

sliding
scar

12

Check
the

jacket
tube
for

bending

13
Check
the

steering
post
clamp
for

existance
of

column
offset

14
Check
the

side
member

gear
housing
installation
unit

for
deformation

IS

Check
the

portion
of

the

steering
post
bracket

installed
on

the

steering
post
clamp
for
correct

installation

AD
JUSTMENT

I

Toe
in

The

procedure
of

toe
in

adjustment
is
outlined
in

section

FRONT
AXLE
AND
FRONT
SUSPENSION

2

Steering
angle

Under
the

specified
load
4

passengers
adjust
the

stopper
bolt
of

the
knuckle
arm
so
that
the
inner
wheel

has
an

angle
of
430

Note

Specified
steering
angle
of
wheel
is
430
for
inner

wheel
and
36005
for
outer

wheel

ST
16

CHASSIS

TROUBLE

DIAGNOSES
AND

CORRECTIONS

Condition

Heavy
steering

Loose

steering

PuU
to
one

side

Steering
shock
Probable
cause

Low
tire

pressure

Incorrect

front
wheel

alignment

Lack
of

lubricant

Firm

sticking
of

the
ball

joint
and
strut

bearing

Improper
adjustment
and

damage
of

steering

gear
housing

Hard

locking
of

column

bearing

Incorrect
front

wheel

bearing
adjustment

Loose

steering
linkage
connections

Loose

steering
gear
housing

mounting

Incorrect

adjustment
of

adjust
nut

Incorrect
tire

pressure

Incorrect
front
wheel

alignment

Incorrect

front
wheel

bearing
adjustment

Unequal
brake

adjustment

Weak
front

suspension
units

Deformation
or

improper
fitting
of
sus

pension

Incorrect
front
wheel

alignment

Loose
front
wheel

bearings

Loose

steering
linkage
connection
and

trans

verse
link

Incorrect

adjustment
of

ball
nut

Wheels

out
of

balance

ST
18
Corrective

action

Inflate

tires
to

recommended

pressure

Adjust
to

specifications

Lubricate

steering
gear
and
ball

joints
or

replace
worn
ball

joint

Replace

Adjust
or

replace
according
to
instructions

Lubricate
with

bearing

grease

Adjust
or

replace
as

required

Inspect
replace
worn

parts
if

any
and

tighten
nuts
to
recommended

torque

Tighten
mounting
bolts

to

proper
torque

Adjust
according
to

instructions

Inflate
to
recommended

pressure

Inspect
and

correct
front
wheel

alignment

Adjust
bearings
according
to

instructions

Adjust
brakes

Replace

Check
correct
or

replace

Inspect
and
correct
front
wheel

alignment

Adjust
bearings

Inspect
replace
worn

parts
if

any
and

tighten
nuts
to

proper
torque

Adjust
steering
gear
according
to

in

structions

Inspect
and
correct
wheel

balance

pointer
used
at
the
rearward
lut
atiol1

With
the

proper

scttings
the

tram
bar
will
be
on
a

piane
parallel
to
that
of

the

body
The

exception
to
this
would
be
wht
n
one
of
the

reterence
locations

is
induded

in
the

misaligned
area
then

the

parallel
plane
between
the

body
and

the
tram
bar

may

not

prevail
After

completiun
of
the

repairs
the

tram

gauge
should
be
set
at
the

specitled
dimension

to
check

the

accuracy
of
the

repair
operation

CAR

PREPARATION

Preparing
the
car
for
the

underbody
alignment
check

involves
the

following

Place

the
car
on
a
level
surface

2
The

weight
of
the
car

should
be

supported
at
the

wheel

locations

3
A

visual

damage
inspection
should
be
made

to

eliminate

unnecessary
measuring
Obviously
damaged
or

misaligned
areas

may
often
be
located

visually
BODY

TRAMMING
SEQUENCE

The

tramming
sequence
will
varv

depending
upon
the

nature
and

IOl
atiun
uf
the

misaligned
area
Priur
to

performing
any

tramming
uperation
the
h

uracy
of

refereJlce

points
to
be
used

must
be

determined
A

measurement

that

originates
from
a
reference

point

included

in
a

damaged
area

will

produce
untrue
results

and

confuse
the
evaluation

of
the

underbody
condition

Unlike

the
conventional

type
of
frame

design
the
unitized

type
of

body
construction

seldom

develops
the
condition

of

diamond
in
the
floor

pan
area
as
a
result

of
front
or

rear
end

collision
Therefore

underbody
alignment

checking
can

usually
originate
from
the

body
floor

pan

area
If

inspection
indicates
that
these

locations
have
been

disturbed

and
are
not
suitable

for

measuring
one
of

the

undamaged

suspension
locations
should
be
used

as
an

initial

reference

point
If

a
rare
situation

should
exist

where
all
of

these
lucalions

are

not
suitable
as

reference

points
repair

operations
should

begin
with
the

body
floor

pan
area
All

other

underbody
components
should
be

aligned

progressively
from
this
area

MEMO

BF

10

CLUTCH

Operating
cylinder
clutch

Operating
cylinder
diameter

T
Ilhtening
torque
19
05
mm
0
750
in

Clutch

assembly
securing
bolt
1
5
to
2
2

kg
m

10
8
to
15
9

ft
Ib

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Condition

Noises
audible

on

pedal

depression

Noises
audible

on

pedal
release
Probable
cause

Excessively
worn

damaged
or

poorly
lubri

cated
release

bearing

Seized
release

bearing
and

diaphragm

spring

fingers

Insufficient

pedal
free
travel

Weakened

unhooked
or
broken
clutch

pedal

return
and
control

springs

Weakened
clutch
withdrawal
lever
return

spring
broken
or
unhooked

Excessive

play
between
clutch
disc
hub
and

drive
shaft

spline

Misalignment
of
clutch
disc
to

flywheel

causes

slight
movement
of

disc
hub
in

respect
of

facings

This
noise
is

especially
audible
with

engine

idling
or

at
low

speed

Broken
or
weakened
clutch
disc
cushion

springs

Insufficient

pedal
free
travel

Weakened
unhooked
or
broken
clutch
con

trol
and

pedal
return

prings

CL
13
Corrective
action

Replace
the

bearing
which

being
cased

cannot
be

greased
inside

Replace
the
release

bearing
Clean

diaphragm

spring
fingers
with
metal
brush
and
smooth

out

bearing
contact
faces
with
felt

polishers

Readjust
pedal
free
travel

correctly

Set

springs
in

position
or

replace
them
if

weakened
or

snapped

Replace
the

spring
or
hook
it

up
as

required

Replace
the
clutch
disc
and

ensure
that

clearance
between

hub
of
new

clutch
and

drive
shaft
is

within
0
50
mm
0

0197
in

endwise
and
0

20
mm
0

0079
in
crosswise

When
clearances
exceed
above
limits

replace

the
drive
shaft
also

Set
level
of
clutch
disc
with
clutch
disc
in

place
on

drive
shaft
set
it
under

slight

rotation
and
check
for
no
run

out

using
a

scriber

Replace
the
clutch
disc

Set

pedal
free
travel

correctly

Check
the

springs
for
correct

position
and

replace
them
if

necessary

CLUTCH

Clogged
vent
hole
in
reservoir

cap
promotes

vacuum

in
master

cylinder

allowing
air

to

inf1ltrate

past
the
seal

Abnormal

lining
wear

Insufficient

pedal
free
travel

The
clutch

grabs

The
clutch

slips
Driver

steps
unnecessarily
on

pedal
this

causes
lin

jog
wear

and

damage
to
release

bearing

Weakened

or

snapped
pressure
springs

Incorrectly
installed

linings

Oil
or

grease
on

flywheel
pressure
plate
and

linings

Loose

disc

linings
due

to

poor
rivet

tightness

Clutch
disc

hub
does
not

slide

freely
on

drive
shaft

spline

Warped
or
cracked

pressure
plate

Misalignment

Stiffened

hydraulic
control
mechanism

Wom
out

lining

Insufficient
clutch

pedal
return

travel
due

to
the
control
and

pedal
return

springs
being

weak
or

misadjusted

Weakened
or
broken

diaphragm
spring

Oil
or

grease
on

linings

eLl5
Clean
reservoir

cap
unclog
the
vent

hole
and

bleed

the

system

Adjust
clutch

pedal
free
travel

correctly

Advise
driver

to
discontinue

wrong

practice

and

step
on

clutch

pedal
only
when
ne

cessary

Check

pressure
springs
for
tension
as

speci

fied
and

replace
springs
if

they
are

unserviceable

Replace

linings
with
new
ones

and
install

them

correctly
Check
clutch
disc
for
center

alignment

Remove
cause

of

leakage
clean

flywheel
and

pressure

plate
thoroughly
replace
linings

If

linings
are
not
worn

replace
defective

rivets

Otherwise

replace
linings
and
clench

rivets

securely

Remove

any

foreign
matter
or

dirt

deposits

from
shaft

splines
When
trouble
is

still

present
replace
damaged
parts

Replace
pressure

plate

Locate
the
defective

point
and
if

possible

adjust
alignment
or

replace
distorted

parts

Check

spring
tension

If

necessary
take

down

pedal
and

lubricate

components

Install
new

linings
and

make
sure
tha

t
the

clutch

disc

pressure
plate
and

flywheel
are

not

damaged

Locate

cause
of
failure
and

replace
defective

springs

Overhaul
clutch
and

replace
springs

Remove
cause
of

leakage
and

replace
linings

if

cleaning
is

ineffective