1977 DATSUN PICK-UP suspension

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

No
Tool
number

tool

name

ST35380000

King
pin
bush

drift

2

HTS6802000

King

pin
bush

reamer
Front
Axle
Front

Suspension

SPECIAL
SERVICE
TOOL

22
2

dia

0
874

SE234

FA
17
Description

Unit

mOl

in

This
tool
is

used
to
drive
out

king

pin
bushing

This
tool
is

used
to
correct

king
pin
bushing
For

use

on

620

620
Reference

page
or

Figure
No

Page
FA
4

Page
FA
S

DATSUN
PICK
UP

MODEL

620
SERIES

I
NISSAN

I

NISSAN
MOTOR
CO

LTD

TOKYO
JAPAN
SECTION
RA

REAR

AXLE

REAR

SUSPENSION

REAR

AXlE
AND

RA
2

REAR

SUSPENSION

SERVICE
DATA
AND

RA
7

SPECIFICATIONS

TROUBLE

DIAGNOSES

RA

8

AND

CORRECTIONS

SPECIAL
SERVICE

TOOLS
RA
9

Rear
Axle
Rear

Suspension

REAR
AXLE
AND

REAR
SUSPENSION

DESCRIPTION

REMOVAL
AND
INSTALLATION

Rear
axle

assembly

Rear
axle

shaft
and
wheel

bearing

Rear
axle

case

Rear

spring

1
1

1
Air

breather

2
Thrust
block

3
Nut

T

3
1
to
4

1

kg
m

22

to
30
ft
lb

4

Shock
absorber

mounting
rubber

bush

5

Rear

spring
clip
V
bolt

6
Rear
axle
oil
seal

spacer

7
Rear
axle

shaft
oil
seal

Supply
wheel

bearing
grease
to

oil
seal

lip
when

assembly

8
Rear
axle

bearing
lock
nut

T
15
to
20

kg
m

10810

145
ft
b

9
Rear
axle

bearing
lock
washer

10
Plain
washer

11
Rear
axle

bearing
cage

12
Road
wheel
bolt

13
Road
wheel
nut

T

8t09kg
m

58
to

65
fl
Ib
CONTENTS

RA
3

RA
3

RA

3

RA
4

RA
5

RA
5
Shock
absorber

tNSPECTION

Rear
axle
shaft

and
wheel

bearing

Rear
axle

case

Rear

spring

Shock
absorber
RA

6

RA
fJ

RA
6

RA6

RA
fJ

RA
fJ

4

I
J

i
I

L
J

@

14
Wheel

bearing

15
Rear

axle

bearing

grease
seat

Supply
wheel

bearing
grease
to

oil

seal

lip
when

assembly

16
Rear
axle

bearing

spacer

17
Rear
axle

shaft

18
Grease
catcher

19

Bearing
cage
bolt

20
Rear
axle
case
end

shim

21
Nut

T
5
4

to
6
4

kg
m

391046
ft
lb

22
Rear

spring
pad

23
Rear

spring

24
Nut

T
7
3
to
9
9

kg
m

53

to
72
ft4b

25
Nut

T
1
610
2

2kg
m

12
to
16
fHb

26
Shock
absorber

rubber
bush

27
Shock
absorber

Fig
RA
I

RA

2
o

RA132

28
Rear
axle
case

29
Filler

ptug

T

6toIOkg
m

43
to
72
ft4b

Oil

capacity
about
1
0
liter

1

US
qt
7
8

Imp
qt

30
Drain

plug

T

6to

10kg
m

43
to
72
fHb

31
Nut

T
11
5
to
13
0

kg
m

83
to
94
fHb

32
Rear

spring
rear
bush

33
Rear

spring

34
Rear

spring
shackle

35
Nut

T
1
1
5
to

13
0

kg
m

83
to

94
fHb

36
Rear

spring

37
Rear

spring
front
bush

38
Rear

spring
front

pin

T

Tightening
torque

Crou
uctional
view

of
rear
a
xl
and

uapension

DESCRIPTION

The
rear
axle

assembly
is
of

the

semi

floating

type
in

which
the
vehicle

weight
is

carried
on
the
axle
shafts

through

bearings
enclosed
in
the

bear

ing
cages
on
outer

rear
axle

case
The

axle
case
is
a

pressed
steeJ

Banjo

type
housing

The

rear
axle

assembly
is

attached

to
the
frame

through
semi

elliptic
leaf

springs
and

telescopic
hydraulic
shock

absorbers

Rubber

bushings
at

either

end
of

the
leaf

springs
and
shock

absorbers

are

designed
to
absorb
vibra

tion
and
noise

The
rear

axle
shaft

splines

engage

the
differential

side

gears
with

a
float

ing
fit
The

outer
ends
are

supported

in
the

bearing
cages
by
tapered
roller

bearings

The

bearings
are
lubricated

by

wheel

bearing
grease
The
axle
shaft
oil

seals

are
located

outboard
and

inboard

of
the

bearing
The

bearings
are

se

cured

against
shoulders

on
the
shafts

by
press
fit

and
held
in

place
by
a

large
nuts

The

bearing
cages
hold
the

bearings

against
shoulders
on
the
axle

case

Whee
side
thrust
is
taken

at
the

wheel

bearings

through
the
thrust

block
so
an
axle
shaft

may
be

re

moved

simply
by

removing
the
bolts

holding
the
brake
disc
to
the

bearing

cage
and
the
rear
axle
case

REMOVAL
AND

INSTALLATION

REAR
AXLE

ASSEMBLY

It
is
not

necessary
to
remove
the

reaT
axle

assembly
for

any
normal

repairs

However
if
the

axle
case
is

dam

aged
the
rear
axle

assembly

may
be

removed
and

installed

using
the
fol

lowing
procedures

I

Raise
rear

of
vehicle

high

enough

to

permi
t

working
underneath

Place
a

jack
under
center
of
axle
case

so
it

just

starts
to

raise
rear
axle

assembly

Place
stands

solidly
under
frame

members
on
both
sides
Remove

rear

wheels
Rear
Axle
Rear

Suspension

2

Mark

relationship
across

propeller

shaft

flange
and

companion

flange
of

differential
carrier
so
that
the

original

combination
is
restored
at

assembly

3

Remove
bolts

retaining
center

bearing
bracket
and

connecting
shaft

to

companion
flange
Withdraw

pro

peller
shaft
sleeve

yoke
from

transmis

sion

by
moving
the

shaft
rearward

passing
it
under

rear
axle

4

Disconnect
rear
hand

brake
cable

Q
by

removing
adjusting
nut

@
three

clamps
ID
and

connector

@

Slide
front
cable

rearward
and

discon

nect
rear

cable

@
at
connector

ID
by

removing
three

clamps
ID

5

Disconnect

rear
brake

hose
at

frame

@
Cover
brake
hose

and

pipe

openings
to

prevent
entrance
of

dirt

6

Disconnect

shock
absorbers
at

lower
end

f
and

push
shock
ab

sorbers

up
out

of
the

way

7

Lower

jack
under

axle
case
Re

move
U

bolts

spring

clips
@
to

separate
axle
case
from

spring

8

Place
a

jack
under

center
of
axle

case
Pass
axle

case

through

space

above

spring
and
take
it

out
to
the

side

RA134

Fig
RA
3

Removing
rear

axle

assembly

9
Install

the
axle
case

assembly
in

the
reverse
order

of
removal

RA
3
RA312

Fig
RA
2
Under
view

Tightening
torque

U
bolt

Spring

clip

7
3
to

9
9

kg
m

53
to
72

ft
lb

Shock
absorber

lower
end
nut

1
6
to
2
2

kg
m

12to

16ft
Ib

Brake

pipe
flare

nut

I
S
to
1
8

kg
m

II

to
13
ft
Ib

Propeller
shaft
to

companion

flange
connecting
bolt

2
0
to

2
7

kg
m

14
to
20
ft
Ib

Center

bearing
bracket

fixin
holt

1
6
to
2
2

kg
m

12
to
16
ft
Ib

REAR
AXLE
SHAFT

AND

WHEEL

BEARING

I
Raise
rear
of
vehicle
and

support

under
axle
case
on
stands
Remove

rear
wheel

2
Disconnect

rear
hand

brake
cable

by
removing
adjusting
nut
and

clamps

3
Disconnect

brake
tube
at
rear

wheel

cylinder
Cover
brake

tube
and

wheel

cylinder
openings
to

prevent

entrance
of
dirt

4

Remove
brake

drum

Not

If
brake

drum
cannot
be

easily

removed
return

brake

adjuster

install

two
bolts

M8
x

I
2S
in

holes
on
the

flange
face
of
brake

drum
and

tighten
bolts

evenly
until

brake
drum
is
driven

out

5

Remove

nuts

retaining
wheel

bearing
cage
to
brake
disc

I

Jq
AA135

Fig
RA
4
Removing
nuts

AA418

Fig
RA
5

Removing
rear
axle

shaft

assem

bly

7

Remove
oil
seal
in

axle
case
if

necessary
and
install

new
seal
Insure

against

damaging
the

seal

lip
Rear
Axle
Rear

Suspension

8

Position

axle
shaft
in
vise

with

Rear

Axle

Stand
ST07630000

9
Unbend
lock
washer

with
a
screw

driver

Note
Do

not
use
used
lock

washer

again

RAl38

Fig
RA

6
Unbending
lock
washer

10
Remove
lock

nut

using
Rear

Axle

Bearing
Lock
Nut

Wrench

ST38020000

I

AA139

Fig
RA
7
R

mouing
lock
nut

II
Withdraw
wheel

bearing
to

gether
with

bearing
cage
and
brake

disc

using
Rear
Axle
Shaft

Bearing

Puller
HT72480000

HT72480000

r

t

Rvr

G

l
AA343

Fig
RA
8

Removing
bearing
o

12

Remove
oil
seal
in

bearing
cage

if

necessary

13

To
remove

wheel

bearing
outer

race

after
removed
oil
seal

apply
a

brass
drift
to
race

side
surface
and

withdraw
it

by
tapping
the

lop
of

drift
with

a
hammer

Installing
can
be

proceeded
in
the

reverse

order
of
removal

procedure
as

follows

RA
4
I
Fit

wheel

bearing
outer

race

by

tapping
with
a

brass
hammer

evenly

while

fitting

2
Install

a
new

oil
seal
in

bearing

cage
Lubricate

cavity
between
seal

lips
with

wheel

bearing

grease
after

fitting
seal

3
Place

bearing
cage
with
brake
disc

and

bearing

spacer
on
axle

shaft
and

fit

bearing
cone

To
install

bearing

cone

apply
a
brass
drift
to
race
side

surface
and

tapping
the

top
of
drift

with
a

hammer

AA141

Fig
RA
9

Installing
whetl

bearing

4
Place

bearing
lock
washer

Q
and

bearing
nut
lock
washer

@
on
axle

shaft

and

tighten
lock
nut

@
using

Rear

AJde

Bearing
Lock
Nut

Wrench

ST38020000

and
bend

up
lock
wash

er

Notes

a
Be

careful

to

place
the
faced

side
of

nut
to
washer
side
so

that
washer
is

not

damaged

b
Coincide
washer

lip
with
nut

groove

correc

ly
by

tightening
nul
and

bend
washer

carefuljy
so
that

lip

will
nol
be

damaged

Tightening

torque

IS
to
20

kg
m

J08
to
14S
ft
Ib

t
i

i

f

ifii
itf

L

4

S

11

iI
i

j

pu
y
J
t

Mf

i

I

AA142

Fig
RA
IO
Layout
of
ock
nut