1977 DATSUN PICK-UP steering wheel

DESCRIPTION

MAINTENANCE
AND
SERVICE

TIRE
INFLATION

TIRE
REPAIR

WHEEL
REPAIR

WEAR

DESCRIPTION

The

620
series
models
are

equipped

with

4lV
14

wheels
with
25

mOl
0
98

in

offset
All
tires

are
tubeless
Wheel

and
Tire

WHEEL
AND

TIRE

CONTENTS

WT2

WT
2

WT2

WT2

WT
2

WT
2
TIRE

ROTATION

CHANGING
TIRE

INSPECTION

WHEEL

BALANCE

WHEEL
AND

TIRE

Tire
size

Model
Tire
size
Wheel
size

All

models
6

00
I
4
6PR

Tubeless
4UJ
14

Tire

pressure

Unit

kgl
em
2

psi

Vehicle

speed
km
h

MPH
Under

Over

100
km
h
100
km
h

Model

60

MPH
60
MPH

Front

1
5
21
1
8

26

Unloaded

Rear
175

25
2
25
32

All

models

Front

1
5

21
1

8
26

Loaded

Rear
3
0

42
3
15
4S

Note
Tire
inflation

pressures
should

be
measured

when
tires
are
cold

MAINTENANCE
AND

SERVICE

TIRE

INFLATION

Correct
tire

pressure
is

very
im

portant
to
ease
of

steering
and

riding

comfort

This
also
reduces

driving

sound

to
a
minimum

resulting
in

longer
tire

life
that
is

overinflation
or
underinflation

promotes
wear
at

cen

ter
tread
or

shouider
of
tire

If

aU
tires
are

inspected
frequently

and
maintained

correct
tire

pressure
it

is

possible
to

detect

sharp
material

in

the
tread

Also
the
above
check

avoids

abnormal
wear
which
invites
serious

problem
If
tires
indicate

abnormal
or

uneven

wear
the
cause
of

problem

should
be
detected
and
eliminated

After

inflating
tires

leakage
in
valve

should
be

checked
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
valve

caps

firmly
by
hand

WT
2
WT3

WT3

WTA

WTA

WT
4

TIRE
REPAIR

In
order

to

inspect
a
leak

apply

soapy
solution
to
tire
or

submerge
tire

and
wheei

in
the

water
after

inflating

tire
to

specified

pressure
Special
in

spection
for

leaks
should
be
carried

out
around
the
valve
wheel
rim
and

along
the
tread

Exercise
care
to
bead

and
rim
where

leakage
occurs

Wipe

out
water
from

area
which

leaks
air

bubbles
and

then
mark
the

place
with

chalk

After

removing
the
materials
which

caused

puncture
seal
the

point
When

repairing
the

puncture
use
the

tire

repair
kits

which
are
furnished
from

tire
dealers

following
the
instructions

provided
with
the

kits
In

case
that
a

puncture
becomes

large
or
there
is

any

other

damage
on
the

tire
fabric

repair

must
be

carried
out

by
authorized

tire

dealers

WHEEL
REPAIR

Inspect
the
wheel
rim

flange
for

bend

or
dents

The

flange
should
be
cleaned

by
a

wire

brush
when
rust
is
found

on
the

flange
Furthermore
if
excessive

pitting
occurs

on
the

rim
eliminate
it

with
a
file

WEAR

Missilgnment

When
the
front
wheels

align
in

excessive
toe
in
or

toe
out
condition

tires

scrape
the

tread
rubber
off
The

wear
of
tread

appears
feathered

edge

4
To

jack
up
rear

place
jack
under

rear

axle
case
close
to
the
side

of
rear

spring
after

applying
parking
brake

and

blocking
front
wheels

WH077

Fig
WT
7

Jacking

up
rear
side

S

Remove
wheel
nuts
and
wheel

from
drum

6
To

install
wheel

reverse
the

above

steps

Tighten
wheel
nuts
in
criss
cross

fashion
to
8

0
to
9
0

kg
m

S8
to
6S

ft

Ib

Note
Nerer

get
under
the
vehicle

while
it

is

supported
only
by
the

jack
Always
use
S8

fety
stands
to

support
the

side
member
of

body

construction
when

you
must

get

beneath
the
vehicle

INSPECTION

WHEEL
BALANCE

The

wheel
arid
tire

asSembly
should

be

kept
balanced

statically
and

dynam

ically
Wheel
and
Tire

Proper
tire

balance
is

necessary

when

driving
the
vehicle

at

high

speeds

Consequently
the

wheel
and

tire

assembly
should
be

properly
re

balanced
whenever

puncture
is

re

paired

The
wheel
and

tire

assembly
be

comes
out
of
ba1ance

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
vehicle
shake
and

steering

malfunction

To

correct
unbalance

use

proper

wheel
balancer

Maximum

allowable

unbalance

177

gr
cm
2
5
in

oz

10

gr
O
3S
oz
at
rim

circumferences

Balance

weight

10
to
60

gr
O
3S

to
2
12

oz

at

10

gr
0
3S

oz
intervat

Note
Be

sure
to

place
the
correct

balance

weights
on
the

inner

edge

of
rim
as

shown
in

Figure
WT
S

00
not

put
more
than
two

weights

on
each

side

WHEEL
AND
TIRE

In

order
to
ensure

satisfactory

steering
condition
as

well

as
maximum

tire
life

proceed
as
follows

Check

wheel
rim

for
rust

distor

tion
cracks

or
other
faults

WT
4
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

run
out

Lateral
run
Qut
limit

Less

tltan
1
5
mOl
0

059

il
total

indicator

reading

WTOO5

Fig
WT

B
Whetl

rim
run

out
check

points

Note
In

replacing
tire

t
e

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

replacement
device

whenever

tire
is
removed

2

Discard
when

any
of

the
follow

ing
problems
occur

1

Broken
or

damaged
bead
wire

2

Ply
o

treairsepanitiori

3

Cracked
or

damaged
side

wall

etc

Condition

Wheel
wobbles

Unevenly
or

excessively
worn

tire

Tire

squeals
Wheel
and
Tire

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Probable

cause

Improper
tire

pressure

Damaged
tire

or
distorted
wheel

rim

Unbalanced
wheel

Loose
wheel
nuts

Worn
or

damaged
wheel

bearing
or
excessive

play
of
wheel

bearing

Improper
front
wheel

alignment

Worn

or
damaged
ball

joint

Excessive

steering
linkage

play
or
worn

steering

linkage

Loose

steering
linkage
connection

Broken

suspension
spring

Damaged
shock

absorber

Improper
tire

rotation

Improper
tire

pressure

Unbalanced
wheel

Improperly
adjusted
brake

Improper
wheel

alignment

Excessively
distorted
or

improperly
installed

suspension
link

High
speed
on

curves

Sudden
start

and

improper
speed
due
to

rapid
acceleration

or

improper
brake

ap

plication

Improper
tire

pressure

Improper
front
wheel

alignment

Distorted
knuckle
or

suspension
link

WT
5
Corrective
action

Measure
and

adjust

Repair
or

replace

Balance

Tighten

Correct

play
or

replace
wheel

bearing

Align

Replace

Adjust
Or

replace

Tighten
nuts
to
rated

torque
or

replace

worn

parts
if

any

Replace

Replace

Conduct
tire

rotation

periodically

Measure
and

adjust

Balance

or

replace

Adjust

Align

Repair

replace
or
if

necessary
reinstall

Reduce

speed

Follow
correct
and

proper
driving
manner

Measure
and

adjust

Align

Repair
or

replace

STEERING
SYSTEM

STEERING

CONTENTS

DESCRIPTION

STEERING
GEAR

Remo
al
and
installation

Disassembly
and

assembly
ST
2

ST
3

ST
3

ST
4
Inspection
and

repair

STEERING
LINKAGE

Removal
and
installation

Inspection
and

repair
ST
5

ST
6

ST
6

ST
7

DESCRIPTION
The
other

end
of
the

cross
rod
is

linked
to
the
idler

arm

connecting

with
the
side

member
located
on
the

opposite
side
of

the

steering

gear
The

two
side
rods

serve
to
connect

the

steering
gear
arm
and
idler
arm
to
the

both

knuckle
arms

right
and
left
hand

sides

With
this
construction

even
if
the

left

andlor

right
wheel
moves
vertical
The

steering
gear
used
on
this

model
series
vehicles
is

e
same
re

circulating
type
This

steering
gear
is

designed

especially
for

easy
operation

and

high

durability

The

steering
linkage
is

of
a

relay

design
of
which

gear
arm
is

connected

to
one
end
of
the

adjustable
cross
rod
ly
and

independently
steering
can
be

safely
maintained

Steering
wheel
rotation
is
converted

to

gear
arm
motion
in

proportion
to

the

gear
ratio

by
the

steering

gear
The

gear
arm
motion

operates
the
side
rod

on
the
same
side
At
the

same
time

the
idler
arm
is
moved

through
the

cross
rod
and
the

opposite
side
rod
is

also
moved

1

Steering
column

shaft

2

Steering
column

jacket

3

Steering
wheel

4
Column

clamp

S
Post

gro
llmet

6

Steering
gear
arm

sr
2
7
Cross
rod

8
Cross
rod
socket

9
Idler
arm

assembly

10
Side
rod

11

Steering
gear
assembly

ST528

Fig
ST

I
Structural
u
w

of
teeriTl
l
tem

STEERING
GEAR

Removal
and

installation

Removal

I
Disconnect

battery
ground
cable

from
the
terminal

2
Remove

horn

pad
by

unscrewing

two
bolts
from
the
rear
side
of

steering

wheel
bar

Note
Be

sure
to

punch
mark
with

0
on
the

top
of

steering
column

shaft

Fig
ST

3
R

moving
horn

pad
STEERING
SYSTEM

A

@

@l
@

J
i

u
p

I

1

jj

ST199

Sector
shaft

adjusting

screw

2

Filler

plug

3
Sector
shaft
cover

4

Sector
shaft

adjusting

screw
shim

5

Gear

housing

6
Sector
shaft

7

Oil
l

8
Gear

housing
bushing

3
Remove

steering
wheel
with

Steering
Wheel
Puller

ST27I80001

after

backing
off

steering
wheel

fIXing

nut

Fig
ST
4

Removing
teering
wheel

Note
Be
sure
not
to
hammer
the

special
tool
while

removing

4

Remove

upper
and
lower

steering

column
shell

covers

S
Remove
turn

signal
switch
as

sembly

ST3
9
Worm

assembly

ball

nut
assembly

10
Worm

bearing
adjusting

shim

11
Column

jacket

12

Steering
column
shaft

13
Column

jacket
bushing

14

ring

15
Worm

bearing

Fig
ST
2
Sectional
view

of
steering

gear

6
Remove
column

clamp
fixing

bolts

c
@

I

f
c

I

1
I

1

i

T201

Fig
ST
5
Removing
column

clamp

7
Remove
four
bolts

securing
steer

ing
post
grommet
to
dash

panel

8
Remove
nut

securing

gear
arm
to

sector
shaft
and
then
withdraw

gear

arm
with
the
use
of
Pitman
Arm
Puller

ST2902000I

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

I

J

L6

3

4

5
1

Apply
recommended

grease
to

screw

bushing
interior

plain
bushing

interior
dust
seal
inside
and

bushing

sliding
surface
of
idler
ann

Screw

bushing
tightening

torque

12

kg
m

87
ft
lb

2

Before

installing
idler
arm
assem

bly

replace
f
iller

plug
with

grease

nipple
and

apply
recommended

grease

to
idler

ann

through
this

grease
nipple

until

grease
is
forced

out
at
the

lower

end
of

the
dust

seal

lip
Remove

grease

I

8
I

II

I

I

FIODt

Inspection
and

repair

Ball

joint

1
When
ball
stud
is

worn
or
axial

play
is
too

excessive

replace
cross
rod

socket
or
side

rod
with
a
new
one

2
When

dust
cover
is

broken
or

defonned

be
sure
to

replace
with
a

new
one

Axial
end

play
0
1
to
0
5

mm

0
004
to
0
020
in

Initial

swing
torque

S
to
15

kg
cm
70
to
209
in
oz
STEERING
SYSTEM

nipple
and
reinstall

filler

plug

3
In

installing
idler
arm

assembly

make

sure
that
the

standard

dimension

A
is

adjusted
correctly

Standard
dimension

A

137
8
to

139
8

mm

S

42S
to
S
504

in

See

Figure
ST

14

Furthermore
be

sure
to

install

washers

correctly
See

Figure
ST
IS

Spring
washer

Frame

Plain
washer

Weld
nut

Self

locking
nut

ST212

Fig
ST
15
Locations

of
washers

Initial

swing
torque
5

to
15

kg
cm

70
to
209
in
oz

ST213

ST
7
sary
To
renew

grease
remove

grease

nipple
cap
and

apply
recom

mended

grease
to
ball

joint

through

grease
nipple
until

grease
is
forced

out
at
the

grease
vent
hole

Idler
arm

3B8embly

Remove
old

grease
and
dirt
and

check
idler

ann

assembly
for
wear

deformation
and

damage

CrOBS
rod
side
rod

and

gear
arm

Check
them
for

bending
damage

and
crack
and

replace
as

necessary

Inspecting
steering
system
on

the
vehicle

which
comes
into

collision

Steering
system
is

very
important

for

driving
a
vehicle
When
the

vehicle

comes
into

collision

especially
the

front
of
the

vehicle
is

damaged
special

inspection
should

be
done

for
the

following
matters

If

any
component
parts
of

steering

system
is

found

to
be

damaged
re

place
them

with
new
ones

1

Steering

angles
correctness

Inspect
side

rods
and

cross
rod
for

bend
and
sector
shaft

for
distortion

2

Level
of

steering
wheel
bar
with

the
front

wheels
in

a

straight
ahead

position

If
its
deflection
is

more
than
about

90

degrees
the

bend
or
distortion
of

sector
shaft

and
column
shaft
can
be

seen

3
Noise

during

operation
of

steering

wheel

Inspect
column
shaft

and

jacket

tube
for
bend

4
Smooth

operation
of

steering

wheel

Inspect
sector

gear
for

breakage

ball

nut
screw
for
dint
and
column

shaft

for
bend

S
Gear
arm

breakage

6
Gear

housing
breakage

In
addition

inspect
gear
housing

f

IXing
bolts
for
looseness

7
Distortion
of
sector
shaft
serra

tion

8
Sector

gear
breakage