steering wheel adjustment DATSUN PICK-UP 1977 Service Manual

Front
Axle

Front

Suspension

FRONT
AXLE
AND

FRONT
SUSPENSION

CONTENTS

GENERAL
DESCRIPTION

FRONT
AXLE

REMOVAL
AND
INSTALLATION

WHEEL
BEARING
ADJUSTMENT

DISASSEMBLY
AND
ASSEMBLY

INSPECTION

SHOCK
ABSORBER

REMOVAL
AND
INSTALLATION

INSPECTION

STABILIZER

REMOVAL
AND
INSTALLATION

INSPECTION

TENSION
ROD
FA
2

FA
3

FA
3

FA
4

FA
4

FA
5

FA
8

FA

8

FA
8

FA
8

FA
8

FA

8

FA
8
REMOVAL

AND
INSTALLATION

INSPECTION

TORSION
BAR

SPRING

REMOVAL
AND

INSTALLATION

INSPECTION

UPPER
AND
LOWER
LINKS

FjEMOVAL
AND

INSTALLATION

DISASSEMBLY

AND
ASSEMBLY

INSPECTION

ADJUSTMENT

VEHICLE
POSTURE

WHEEL

ALIGNMENT

STEERING
ANGLE

GENERAL
DESCRIPTION

uUl
FA

8

FA

9

FA

9

FA
9

FA

9

FA
10

FA
l0

FA
ll

FA
ll

FA
Il

FA
ll

FA

12

FA
12

FA224

Fig
FA
j
SectionallJiew

of
fronta
xle
and

fron
t

suspension

FA
2

WHEEL
ALIGNMENT

Correct
front
wheel

alignment

attains

proper
vehicle

handling
charac

teristics
and
the
least

steering
effort

with
a
minimum
amount
of
tire
wear

Before

adjusting
front
wheel

align

ment
make
sure
to

carry
out
a

pre

liminary
inspection
of
the
front
end

parts
for
the

following
conditions

1
Tire

pressure
and

balance

2
Wheel

bearings
and
nuts

3

Steering

gear
play

4

Steering
gear

housing
at
frame

S

Steering
linkage
and
connections

6
Shock
absorber
action

When

using
the

equipment
for
front

wheel

alignment
inspection
follow
the

inst

c
tions
furnished

with
the

equip

ment
Furthennore
the

inspection

should
be
made
with
the

vehicle
level

and
at

curb

weight

Camber
and

caster

Measure
camber
and
caster

and

adjust
them
in

accordance
with

the

following
procedures
if

necessary

Both
camber
and
caster

are
ad

justed
by
increasing
and

decreasing

thickness

of

adjust
shim

inserted
be

tween

upper
link

spindle
and

upper

link

mounting
bracket

To

adjust
caster

make
a

difference

between

thickness
of
front

and
rear

shims

By

adding
a
shim

I
mm
0

039

in

at
front
side

caster
will
be
de

creased

by
33

At
the

same
time

camber

will
also
be

decreased

by
6
S

To

adjust
camber
add
or
remove
an

equal
amount
of

shims
to
front

and

rear
sides

By

adding
a

pack
of
shims
I

mOl
0
039
in

thick
at
both

sides

camber

will

be
decreased

by
13

Shims

are
available
in
I

mm
0
039

in
2

mOl
0
079
in
and
4

mOl
0
157

in

thickness
Front
Axle
Front

Suspension

FA243

Fig
FA

25

Adjustingcamberand

cCJ
ter

Notes

a
Do
not
make
difference

between

front

and
rear
shims

in
thickness

beyond
2
mm

0
079
in
on
a

upper

link

spindle

b

Umit
shim
thickness
for

anyone

stack
within
6

nun
0

236
in

c
Do
not

use
shims
for

anyone
stack

more
the
2

sheets

Toe
in

Measure
toe
in

and

adjust
if
neces

sary
For

adjustment
carry
out
the

follOWIng
procedures

Turn

steering
wheel
to

straight

ahead

position
with
front
wheels
in

the
same

position
Then
check

steer

ing
gear
straight
ahead

position

Loosen
lock
nuts

@
left
hand

thread
and

ID
right
hand
thread

and
turn
cross
rod

CD
to

adjust
toe
in

Turn

cross
rod
to
forward

direction
as

shown

by
arrow
and
toe
in
is

reduced
When

cross
rod
is
turned
to

opposite

side
toe
in
is
increased

After

correct
toe
in
is

obtained

tighten
lock
nut

to
8

0
to
10

0

kg
m

S8
to

72
ft
Ib

r
J

r

CD

0

HI

r
I

e

f

FA244

Fig
FA

26

Adju6ting
toe
in

STEERING
ANGLE

Check

steering
angle
and
use
the

follow

ng
procedures
if

necessary

Loosen
lock
nut
at

stopper
bolt
and

adjust
steering
angle
with

stopper
bolt

Mter

obtaining
correct

steering

angle

secure
lock
nut

firmly

FA245

Fig
FA

27

Adjusting
steering
angle

Model
Item

All

models

mOl
in
1
2
to
3
0
079
to

0
118

Toe
in

degree
2

10
to
16

Camber

lOIS
Io

Caster
10SO

4S

I
60IS

Kingpin
inc

inal10n

I
Inner
wheel

360
10

Steering
angle

I
Outer
wheel

310
10

1
The

extreme
front
and

rear
of
the
tire

center

Unladen

2
The
total

angle
of

the
both
tires

FA
12

Front
Axle
Front

Suspension

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Condition

Vibration
shock
and

shimmy

ing
of

steering
wheeL

Vehicle

pulls
to
right
or
left
Probable
cause

Vibration
Too

much
backlash
of

steering

gear
wear

of
each

part
of

linkage
and
vibration
of
front

wheels
are
in

many
cases
transmitted
to
the

steering
wheel
This
is

Very
much
noticeable
when

traveJling
over
bad
roads
and
at

higher

speeds

Shock
When

the
front
wheels
are

travelling
over

bumpy
roads
the

play
of
the

steering
linkage
is

transmitted
to
the

steering
wheel
This
is

especially

noticeable
when

travelling
rough
road

Shimmy
Abnormal
vibrations
of
the
front

suspen

sion

group
and
the
whole

steering

linkage
which

occur
when

a

specific
speed
is
attained

Improper
air

pressure
of
tire

Unbalance
and
deformation
of
roadwheel

Unevenly
worn
tire
or

insufficient
tightening

Improperly
adjusted
or

worn
front
wheel

bearing

Faulty
wheel

alignment

Worn
or
loose

suspension
link
screw

bushing

Damaged
idler
arm

Insufficiently

tightened
steering
gear
housing

Worn

steering
linkage

Improper
steering
gear
adjustment
insufficient
back

lash

Faulty
shock
absorber
or
loose
installation

Unbalanced
vehicle

posture

When

driving
with
hands
off
the

steering
wheel

on
a

fiat
road
the
vehicle

gently
swerves
to

right
or

left

Note
A

faulty
rear

suspension
may
also
be
the
cause

of
this
condition
and
therefore
see
also
the

chapter
dealing
with
the
rear

suspension

Improper
air

pressure
of
tire

or
insufficient

tightening

of
wheel
nu
ts

Difference
in

height
of

right
and
left
tire
treads

Incorrect

adjustment
or
abrasion
of
front
wheel

bearing

Weakened
front
torsion

spring
or
deviation
from

standard

specification

Improper
wheel

alignment

Worn

or
loose

suspension
link

screw

bushing

FA
14
Corrective
action

Adjust

Correct
the
unbalance

or
re

place

Replace
or
tighten

Adjust
or

replace

Adjust

Replace

Replace

TIghten

Replace
ball

joint

Adjust

Replace
or

tighten

Adjust

Adjust
or

tighten

Replace
tires

Adjust
or

replace

Replace

Readjust

Replace

Condition

Vehicle

puBes
to

right
or
left

Instability
of
vehicle

Stiff

steeirng
wheel

Excessive

steering
wheel

play

Noise
Front
Axle

Front

Suspension

Probable
cause

Deformed
of

steering

linkage
and

suspension
link

Unbalanced

vehicle
level

Improper
air

pressure
of
tire

Worn
or

loose

suspension
link
screw

bushing

Incorrect
wheel

alignment

Worn
or
deformed

steering

linkage
and

suspension

link

Incorrect

adjustment
of

steering
gear

Deformed
unbalanced
wheel

Check

and
correct
in
the

following
manner

Jack

up
front

wheels
detach
the

steering
gear
and

operate
the

steering
wheel
and

a

If
it
is

light
check

steering
linkage
and

suspension

groups

b
If
it
is

heavy
check

steering

gear
and

steering

column

groups

Improper
air

pressure
of
tire

Insufficient
lubricants
or

mixing
impurities
in

steering

linkage
or

excessively
worn

steering

linkage

Insufficient
lubricant
in

gear
box
or
contaminated

lubricant

Unsmooth

king
pin
damaged
part
Or
insufficient

lubrication

Worn

or

incorrectly
adjusted
wheel

bearing

Worn

damaged

steering
gear
and

bearing

Incorrectly
adjusted

steering
gear

Deformed

steering
linkage

Incorrect
wheel

alignment

Interference
of

steering
column
with
turn

signal

switch

Incorrectly
adjusted
steering
gear

Worn

steering
linkage
idler

arm

Improperly
fitted
of

gear
box

Incorrectly
adjusted
wheel

bearing

Worn
or
loose

suspension
link

screw
bushing

Improper
air

pressure
of
tire

Insufficient

lubricating
oil
and

grease
for

suspension

link
screw

bushing
and

steering
linkage
or
their

breakage

FA

15
Corrective
action

Replace

Correct

the
unbalance

Adjust

Replace

Adjust

Replace

Adjust

Correct

or

replace

Adjust

Replenish
grease
or

replace

the

part

Add

or

replace
gear
oil

Replace

Replace
or

adjust

Replace

Adjust

Replace

Adjust

Adjust

Adjust

Replace

Retighten

Adjust

Replace

Adjust

Replenish
lubricating
oil
and

grease
or

replace

Condition

Noise

Grating
tire
noise

Jumping
of

disc
wheeL

Excessively
or

partially
worn

tire
Front
Axle
Front

Suspension

Probable
cause

Loose

steering
gear
bolts

linkage
and

suspension

groups

Faulty
shock
absorber

Damaged
wheel

bearing

Worn

steering
linkage
and

steering
gear

Worn
of
loose

suspension
link
screw

bushing

Improper
air

pressure
of
lire

Incorrect
wheel

alignment

Deformed
knuckle

spindle
and

suspension
linkage

Rough
driving

Improper
air

pressure
of
tire

Unbalanced
wheels

Faulty
shock
absorber

Worn
tire

Deformed
wheel
rim

Improper
air

pressure
of
tire

Incorrect
wheel

alignment

Damaged
wheel

bearing

Incorrect
brake

adjustment

Improper
tire

shifting
rotation

Rough
and

improper
wiving
manner

FA
16
Corrective
action

Retighten

Replace

Replace

Replace

Replace

Adjust

Adjust

Replace

Avoid

rough
driving

Adjust

Adjust

Replace

Replace

Replace

Adjust

Adjust

Replace

Adjust

Adjust

Drive
more

gently

ST202

Fig
ST
6

Withdrawing

gear
ann

Note

Before

removing
steering

gear

arm

scribe
match
marks
on
arm

and

housing
so

that

they
can

easily

be

replaced
in
their

original
posi

tions
at

assembly

9
Remove
three

bolts

securing

steering
gear
housing
to
frame

10
Withdraw

steering
gear
assembly

toward

engine
compartment

Installation

Install

steering

gear
assembly
in
the

reverse
order

of
removal

observing
the

following
instructions

I
When

installing

steering

gear

housing

securing
bolts
insert
two
bolts

through
gear
housing
to
frame

2
When

installing
steering
gear
arm

align
four

grooves
of

gear
arm

serra

tions

with
four

projections
of
sector

shaft
serrations

3

Tightening
torque

Steering
gear

housing

4

6
to
S
3

kg
m
33
to
38
ft
lb

Gear
arm

13

to
IS

kg
m
94

to
108
ft
lb

Steering
wheel

7

0
to

7
S

kg
m
51

to
54

ft
Ib

4

With
front
wheels
set
in

a

straight

ahead

position
make

sure
that

punch

mark
on
the

upper
end
surface

of

steering
column
shaft
is

at
the

center

of
the

upper
side
in
its

installing

portion

S
When

installing
steering
wheel

apply
grease
to

sliding
parts

6
After

installing
make

sure
that

steering
wheel
turns

smoothly
STEERING
SYSTEM

Disassembly
and

assembly

Disassembly

I
Drain

oil
in

steering
gear
housing

by
unscrewing
fIller

plug

2
Place

steering
gear
assembly
in
a

vise

securely

3

Loosen
lock
nut
and
turn

sector

shaft

adjusting
screw
a
few

turns
coun

terclockwise

Remove
sector
shaft
cover

by
un

screwing
four

fixing
bolts

rn

ST203

Fig
ST
7

Remouing
sector

haft
couer

4

Turn

sector
shaft

adjusting
screw

a

few
turns
clockwise

and

pull
sector

shaft
cover

together
with
sector
shaft

from

gear

housing

ST204

Fig
ST
B

PuUing
out

ector

haft

S

Separate
sector

shaft

adjusting

screw
and

shim
from
cover

6
Remove

jacket
tube

by
unscrew

ing
three

fixing
bolts

7

Remove

steering
worm

assembly

from

gear

housing

8

Detach

worm

bearings
and

worm

bearing

adjusting
shims
from

worm

gear
assembly
and
column

jacket

Note
Be

careful
not
to
allow
ball

nut

to

run
down
to
the

worm
end
If

ball

nut
rotates

suddenly
to

the

worm

end
the
ends
of
ball

guides

may
be

damaged

ST
4
9

Pry
out
sector
shaft
oil

seal
from

gear

housing
and

discard
it

10
Remove

O

ring
from
the

rear

cover
of
column

jacket
and

discard
it

11

Remove
column

jacket
bushing

Notes

a

Do
not

remove
sector
shaft

bushing

from

housing
If

necessary
replace

as
a

gea2

nousing
assembly

b
Do

not
disassemble

ball
nut
and

worm

geir
If

necessary

replace

them
with
new
ones
as
a

worm

gear

assembly

Fig
ST
9

Removing

steering
worm

assem

bly

Assembly
and

adjustment

Apply
recommended

gear
oil
to
all

disassembled

parts

1

Fit
column

jacket
bushing
to

column

jacket
in

place

Note
When

fitting
apply
adhesive
to

bushing
exterior
and

grease
to
in

terior

2
Fill
the

space
between
new
sector

shaft
oil
seal

lips
with

grease
and
fit
it

to

gear

housing

3
Place

steering
worm

assembly
in

position
in

gear

housing
together
with

worm

bearings

4

Install
column

jacket
on

gear

housing
with
O

ring
and

worm

bearing

shims

Be

sure
to

install
thicker
shims
to

the

gear

housing
side

Standard
shim
thickness

1
5
mOl
0
OS9
in

Tightening

torque

1
5
to
2
S

kg
m
11
to

18
ft
Ib

STEERING
LINKAGE

Removal
and

installation

Removal

I
Jack

up
the

front
of
vehicle
and

support
it

on
the

safety
stands

2
Remove

cotter

pins
and

nuts
fas

tening
side
rod

ball
stud
to
knuckle

arms

3

To
detach
side
rod
ball
studs

from
knuckle
arms
insert
Ball
Joint

Remover
HT72520000
between
them

and

separate
them

by
striking
the

top

of
this
tool

with
a
hammer
If
this

operation
must
be
done
without
this

tool

strike
the
knuckle
arm
boss
with

a

hammer

backing

up
the

opposite
side

of
it
with
a

large
hammer

and
bail
stud

is
freed
from

knuckle
arm
Must
not

strike
the
baIl
stud
head
the
ball

socket
of

side
rod
and
side

rod
with
a

hammer

and
so
on
in

this

operation

Fig
ST
11
Ball

joints

Ic
ann
side

4

Remove
riut

securing
gear
armOD

sector
shaft

and
remove

gear
arm
with

the

use
of
Pitman
Arm

Puller

ST29020001

See

Figure
ST
6

S

Remove
idler
arm

assembly
from

frame

by
backing
off

fixing
bolt
and

nut

Ffa
ST
12

Removing
idler

ann
STEERING

SYSTEM

6
Cross
rod
both

side
rods

and
the

adjacent
parts
can
then
be
freed
from

the

vehicle
as
an

assembly

7

Then

separate
the
ball

joints
of

steering

linkage
assembly

following
the

procedure
for
removal
of
the
side

rods

ball

joints
at

knuckle
arm

sides

Assembly

Install

steering
linkage
in

the
reo

verse

sequence
of

removal

observing

the

following
notes

Tightening
torque

Ball

stud
S
S
to

10
0

kg
m

40
to
72
ft
lb

Idler
arm

assembly

3
2
to
3
7

kg
m

23
to
27
ft
lb

Cross
rod

adjust
bar
lock
nut

8
to
10

kg
m

72

fL
2
f
2
When

cross
rod
sockets

and
cross

rod
are

separated
adjust
cross
rod

length
correctly

Adjustment
should
be
done
be

tween
the
centers
of
ball

joints
at
the

both
end
of
cross
rod

assembly

Standard
cross
rod

length

516

rom
20
31
in

3

Adjust
toe
in

and

steering

angle

The

procedures
of
toe
in

and
steer

ing

angle
adjustments

Ie
described
in

Section
F

A

Toe
in

1
to
5
mm

0
04
to
0
20
in

Steering
angle

Inner
wheel
3S030
to

36030

Outer
wheel
30030

to
31030

5t6
mm
20
31
in

1
Cro
s
rod

2
Side
rod

3
Cross
rod
socket

4
Idler
arm

assembly

5

Gear

housing

assembly
Mter

adjustment
of

toe
in
be
sure

that
dimension
A

at

both
ends
of
cross
rod
is
not

less
than
20
nun
0
79
in

Idler
ann

assembly
ST210

Fig
ST
13

Adjusting
cross
rod

assembly

@

1
Idler

body

2
Collar

welded
to

idler

body

A

3
Plain

bushing

4

Screw

bushing

T529

ST
6
Fig
ST
14

Sectional
W

of
idler
arm
as
sembly

STEERING
SYSTEM

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Condition

Steering
wheel
moves

heavily

Steering
wheel
turns

but

sluggishly

Vehicle

pulls
to
one

side
Probable
cause

Wheel

alignment
out
of

specifications
or
air

pressure
in
tires

too
low

Steering

linkage
out
of

adjustment

Steering
column
out
of

alignment

Wheels
out
of

alignment
or
air

pressure
in

tires

too
low

Damaged
steering
linkage

Wheels
out

of

proper
alignment

Wheel

bearing
out
of

adjustment

Damaged

steering
linkage

ST
9
Corrective
action

Align
or

inflate
tires

to
correct

pressure

Adjust
and

see
relative

topic
under
Front

Suspension

Repair

Repair
or
inflate
tires

to
correct
air

pressure

Replace
and
see
relative

topic
under
Front

Suspension

Align

Adjust

Replace
and

see
relative

topic
under
Front

Suspension