1977 DATSUN PICK-UP steering

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

Available
worm

bearing
adjusting

shim

No
Thickness

mOl

in

I
0
762
0
0300

2
0
2S4
0
0100

3
0
127
0
0050

4
O

OSO
0
0020

5

Adjust
the
worm

bearing

preload

with

Preload

Gauge
ST3127S000

by

selecting
suitable

bearing
shims
so
that

the
initial

turning

torque
of

steering

column
is

the

specified
value

Initial

turning
torque
of

steering

column
shaft

New
worm

bearing

4

0
to
6
0

kg
em

S6
to
83
in
oz

Used
worm

bearing

2
4
to
4
4

kg
em
33
to
61
in

oz

6

Insert

adjusting
screw
into
the

T

shaped

groove
at
the
sector
shaft

head

and

adjust
the
end

play
between

sector
shaft
and

adjusting
screw
until

it
is
within
0

01
to
0
03
mm

0
0004

to
0
0012
in

by
choosing
suitable

adjusting
shims

Available
sector
shaft

adjusting

screw
shim

No
Thickness
mOl
in

I
1
57S
0
0620

2
1
550
0
0610

3
1
525
0
0600

4
I
S00
0
OS91

S
1
475
0

0581

6
I

4S0
0
0571

7
Rotate
ball
nut

by
hand
until
it
is

in

the
center

of
its
trovel
then
install

sector
shaft

together
with

adjusting

screw
in

gear
housing
ensuring
that

the
center

gear
of
sector
shaft

engages

with
that
of
ball
nut
STEERING
SYSTEM

8

Install
sector
shaft
cover

to

gear

housing
Be
sure

to

apply
sealant
to

each
face
of
sector
shaft
cover

packing

when

installing
cover

9

By
turning

adjusting
screw
coun

terclockwise
attach
sector
shaft
cover

to

gear
housing
and
then

temporarily

secure
it
with
its

fixing
bolts

10
Pull
sector
shaft
toward

cover

approximately
2
to
3
mOl

0
08
to

0
12
in

by
turning

adjusting
screw

counterclockwise
and
tighten
sector

shaft
cover

fixing
bolts
to
l
S
to
2
5

kg
m

11
to
18
ft
Ib

II
Push
sector
shaft

against
ball
nut

gear
by

gradually
turning

adjusting

screw

clockwise
until

sector
shaft

gear

lightly
meshes
with
ball
nut

gear
and

then

temporarily
secure

adjusting

screw
with
lock
nut

12
Install

gear
arm
to
sector
shaft

and
move

sector
shaft
several
times

from
the
side
of

gear
arm
and

make

sure
that
it
turns

smoothly

13

Adjust
the
backlash
at
the
neu

tral

position
of

gear
arm

by
turning
in

or
out

adjusting
screw
so

that
the

movement
of
the

gear
arm

top
end
is

less
than
0
1
mOl
0
004
in

0

ST207

Fig
ST
10
Mea

uring
backlash

14
Turn

adjusting
screw
approxi

mately
1
8
to
1

6
turn
clockwise
and

then

retighten
lock

nut
to
3

0
to
4
0

kg
m
22

to
29

ft
Ib

IS
Fill
recommended
gear
oil

ap

proximately
0
33
liter
X

U
S

pI

X

Imper
pt
into

gear
assembly

through
the
filler
hole
and
install
filler

plug

ST
5
Inspection
and

repair

Wash
clean
all
the
disassembled

parts
in
solvent
and
check
for
condi

tions

Sector

shaft

1

Check

gear
tooth
surface
for

pit

ting
burrs
cracks

or

any
other
dam

age
and

replace
if

faulty

2
Check
sector
shaft
for
distortion

of
its
serration

and
if

necessary
re

place
In

this
case
be
sure
to
check

gear
housing
for
deformation

Steering
column
shaft

assembly

1

Inspect
the
ball
nut

gear
tooth

surface
and

replace
if

pitting
burrs

wear
or

any
other

damage
is
found

2

Ball
nut

must
rotate
smootWy
on

worm

gear
If

found
too

tight
assem

bly
should
be

replaced
Check

as
fol

lows

Move

ball
nut
to
either
end
of

worm

gear
and

gradually
stand
steer

ing
column
shaft

assembly
until
ball

nut
moves
downward
on
worm

gear

under
its

own
weight
In
the
above

test
if
ball
nut
does
no
move

freely

over
entire

stroke
assembly
may
be

damaged
Replace
with

a
new
one
as

an

assembly

Note
In

this

inspection
be
careful

not
to
dama
e

ball
nut

guide
tube

Bearings
and

bushings

I

Replace
worm

bearings
if

pitting

wear

or

any
other

damage
is

found
on

them

2

Repiace
column

bushing
which
is

excessive
worn
or
deformed

3
If
sector
shaft

bushings
in

gear

housing
are
found
worn
or

damaged

replace
as
an

assembly
of

gear
housing

and

bushing

Oil
seal

gasket
and

O

ring

Do
not
reuse
above

parts
which
are

removed
once

Be

sure
to
use
new

parts
at
each

reassembly

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

STEERING
SYSTEM

9
Column

shaft

breakage
on

the

welded
section

In

addition

inspect
column
shaft

for

scratch
10
Deformation
of

body
construc

tion

and
frame

Inspect
the
installation

portion
of
steering

system
on
the

body
construe

tion
and

frame
for
deformation

or

any

other

faulty
conditions

SERVICE
DATA
AND

SPECIFICATIONS

SPECIFICA
nONS

Gear

type

Gear
ratio

SERVICE
DATA

Standard
thickness
of

worm

bearing

adjusting
shims

mOl

in

Initial

turning

torque
of

steering
column

New

worm

bearing
kg
em
in
lb

Used

worm

bearing
kg
em
in
lb

End
clearance

of
sector
shaft

adjusting
screw
rom
in

Backlash

at
the

gear
arm

top
end
rom
in

Oil

capacity
t

U
S

pt
Impel

pt

Bail

joint
axial
end

play
rom

in

Standard
cross

rod

length
rom

in

Toe
in

rom
in

Steering
arigle

Inner

wheel

Outer
wheel

Tightening

torque

Steering
column

jacket
to

gear

housing

Sector
shaft

cover

Sector
shaft
lock
nut

Gear

housing

Gear
arm

Steering
wheel

Bail
studs
of
cross
rod

Ball
studs
of
side
roo

Knuckle

arm
side

Gear
or

idler
arm

side

ST
8
Recirculating
ball

type

19
8
I

1
5

0
OS9

4

0
to
6
0
3
5
to
S

2

2
4

to
4
4

2
1

to
3

8

om
to
0

03
0
0004
to

0
0012

o
to
0
1

0
to
0
004

0
33
J

X

0
1
to
0
5

0
004
to
0
020

516

20
31

I

to
S

0
04
to
0

20

35030

to
36030

30030

to
31030

Unit

kg
m
ft
lb

1
5

to
2
S

II

to
18

I

S
to
2
S

I
I

to
18

3

0
to
4

0

22
to
29

4

6
to
5
3
33

to
38

13
to
IS
94

to
108

7
to
7
S

SI
to
S4

S
S

to
10
0
40
to

72

S

S
to
10

0

S
5

to
10
0
40
to

72

40
to

72

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

STEERING

SYSTEM

SPECIAL
SERVICE
TOOLS

No
Tool
number

tool

name
Description

Unit
mOl
in
For

use

on
Reference

page
or

Figure
No

ST27I80001

Steering
wheel

puller
This
tool

is
used
to

drive
out

steering
wheel

All

Fig
ST4

models

Caution
Do

not
hammer

on

steering
column
shaft

o
v

J

SE
116

2

ST29020001

Pitman
arm

puller
This
tool

is
used
to
remove

steering
pitman
arm
from

steering

sector

shaft
Fig
ST
6

SE401

3
ST3I

27S000
This
tool
is

used
to
measure

the
worm

bearing
preload

All

Page
ST
5

Preload

gauge
models

GG91030000

Torque

D

wrench

I

2
HT62940000

IJ

Socket

t

Y
ID

adaptor

114
3

8
Go

3

HT62900000
318
1
2

Socket

adaptor

4

HT72520000
This
tool
is

used
to

remove
ball

joint

All

Page
ST
6

Ball

joint
models

remover
620

B210

710

610

SE399

ST
10