1977 DATSUN PICK-UP steering

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

REMOVAL

1

Removing
flare

nuts
on

both
ends

and

clips
effects
the

removal
of

brake

tube
and
brake
hose

2

Rear
brake
hose
can
be

removed

by
disconnecting
the
tube
and
then

turning
round
the
hose

Note
When

removing
brake
tubes
and

hoses

use
Flare
Nut

Torque

Wrench
GG943IOOOO

Never
use

an

OpeD
end

or
an

adjust

able
wrench

INSPECTION

1
Examine

all
hoses
for
swell

rubbing
marks
or
ozone
cracking

re

placing
those

found
with

any
of
above

badly
beyond
use
Also

inspect
end

fittings
and
be
sure
that
no
fluid
leak

through
staked
end

has
taken

place

replace
if

necessary
Hose

with

badly

rusted

fitting
should

also
be

replaced

with
a
new
one

2

Clean
all
tubes

to
remove
dust

and

dirt
with

isopropyl
alcohol

check

ing
for

collapse
wear

cracking
swell

or

rusting
Replace
if
foun
d

with

any

of
wove
Use
care
not
to

damage

brake
tubes

while

operation

Check
if
tubes

are

clamped
secure

ly

Mter
all

brake
lines

have
been

installed

retighten
aU
connections
if

necessary
to

assist
in

obtaining
correct

torque
In

retightening
at
front
wheel

cylinder
first
remove
hose

clamp
and

loosen
flare
nut
on

opposite
side
to

avoid

twisting
hose

Hold

pedal
as
far
downward
as

possible
80

kg
176
lb
or
more

examining
evidence
as
to
whether
fluid

is

leaking
through
brake

lines
or

con

nections

Leakage
in

any
manner
can

not
be

permitted
here
In

case
fluid

leaks

tightening
to

specified
torque

tighten
additionally
up
to
2
5

kg
m

J
8
ft
lb
Under

no
circumstances

should
not

be

tightened
over
2
5

kg
m

18
ft
Ib

torque
since
this

elongates

end

fitting
making
it

impossible
to

reuse
brake
tube

Under
no
circumstances
should
rear

brake
hose
and
3

way
connector
be

retightened
over

specified
torques
In
Brake

System

stead

replace

copper
washer
with
a

new
one

after

checking
for

sign
of

damage
on

seating
surface
Never
reuse

an
old

copper
washer

INSTALLATION

Brake
hose

Front
brake

hose

In

installing
brake
hose
first

jack

up
vehicle

to
take
off
the

weight
of

vehicle
from

wheels
so
that

suspension

is
in
rebound

Steering
wheel
should

also
be

kept
in

straight
ahead

position

To
connect
brake

line
first

connect

brake

hose
to
wheel

cylinder
with
the

specified
torque

Tightening
torque

1
7
to
2

0

kg
m

12
to

14
ft
Ib

Then
secure

brake
hose
to
the

bracket
with
lock

plate
so
as
not
to

twist
or

abnormally
bend
the
hose

Note

After

connecting
brake
hose

at

both
eiuIs

pay
keen
attention
not

to
twist
the
hose
when
additional

tightening
is

required

Fig
BR

12
Front
brake

hose

Rear

brake
hose

First
secure
rear
brake
hose
to

3

way
connector
on
rear
axle
case
to

the

specifications
Mter

connecting

hose
do
not

tighten
it

at
3

way

connector

additionally
since
this

oper

ation

causes
hose
to
be
twisted

Tightening

torque

I
7

to
2
0

kg
m

12
to
14
ft
Ib

BR
8
Fig
BR
13
Rear
brake
ho
e

After
brake
hose
has
been
installed

check

to
be

sure
that
there
is

enough

clearance
between
hose
and

adjacent

parts
to
avoid
contact
with
other
ones

The
check
should
be
carried
out
while

moving
wheel

up
and
down

through
its

full

stroke
and

rotating
steering
wheel

between
two
extreme
lock

positions

The
wow
clearance
must
be
as

follows

Hose

to

rotating
or

mOving
parts

such
as
tire
and

rim

40
mm
1
57
in

and
more

Hose
to

stationary

part

2S

mm
0

98
in
and
more

In

case
that
the

above
clearance

cannot
be
obtained
it

may
be
caused

by
the
hose

twisted

Accordingly

carry
out
the
correction
with
hose

connection

again
following
the
above

instructions

Brake
tube

In

installing
a
brake
tube
use
care

to
locate
its

end

squarely
on

mating

seat

noting
the
fact
that
nut
can
be

turned

freely
by
a

light
finger
twist

Then

tighten
to
correct

torque
with
a

Brake

Pipe
Torque
Wrench

GG943
10000

Tightening
torque
Flare
nut

1
5
to
1

8

kg
m

11
to

13
ft
Ib

In
addition
care
should
also
be

exercised
to
avoid

damaging
or
col

lapsing
brake
tube

during
operation

Be
sure
to
make

enough
clearance

between
all
tubes
and
other

adjacent

parts
to
avoid
contact

In

installing
tube

through
hood

ledge

grommet
be
sure
to

position
it

at
the

center
of

grommet

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

SERVICE

MANUA
L
4

DATSUN
PICK
UP

MODEL
620
SERIES

I
NISSAN

I

NI55AN

MOTOR
CO
LTD

TOKYO
JAPAN
SECTION

ST

STEERING

SYSTEM

STEERING

SERVICE
DATA
AND

SPECIFICATIONS

TROUBLE
DIAGNOSES
AND

CORRECTION

SPECIAL
TOOLS
ST
2

ST

8

ST
9

ST
10

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