DATSUN B110 1973 Service Repair Manual

STEERING

DESCRIPTION

The

steering
system
consists

of

recirculating
ball

type

gear
box

and

parallelogram
linkage

These

systems
give
good

response
light
handling
and

utmost
durability
Moreover
the

steering
linkage
is

equipped
with
a
torsion

rubber

system
idler
arm
which

absorbs
shock
from
the

wheel

Check
the
lubricant
of

gear
box

every
10
000

km
6
000
miles
and

replenish
recommended
oil
as

required

The

steering
linkage
should
be

greased
up
with
wheel

bearing
grease
every
50
000
km
30
000
miles

All

necessary
service

procedures
for
the

steering
lock

system
are
described
in
the

BODY
ELECTRICAL

SECTION
of
this
manual
and
therefore
no
instruction
is

given
here

STEERING

CONTENTS

REMOVAL

DISASSEMBL
Y

Ball
nut

assembly
ST
2

ST
3

ST

4
INSPECTION
AND
REPAIR

ASSEMBL
Y
AND
ADJUSTMENT

INSTALLATION
ST
4

ST
5

ST
7

1

Steering
gear
housing

2
Shaft

steering
sector

3
Screw

adjusting
roller
shaft
4
Cover

sector
shaft

5
Shim
worm

bearing

6

Comp
jacket
column
7

Assembly
column

steering

8

Assembly
bearing
steering
worm

9

Assembly
nut
ball

Fig
ST
1

Steering
gear
components

ST
1

Iii

I
o

t

I

I

CHASSIS

Fig
ST
2

Steering
wheel

REMOVAL

1
Remove
the

horn

ring
and

remove
the

steering
wheel

nut
and

pull
out
the

steering
wheel

by
the
use

of
a
Steer

ing
wheel

puller
ST27180000
3
Remove
the
turn

signal
and

lighting
switch

com

pletely

4
Remove
the
hand
lever

assembly
from

the
control

rod

assembly
by
unscrewing
the

fIxing
bolts

5
Remove

two

fIxing
bolts
used
to
secure
the

steering

column
to
the
instrument

panel

ST27180000

Fig
ST

3

Removing
steering
wheel
lock
nut

Note
The

horn

ring
can

be

easily
removed

by
two
bolts

2

Remove
the

steering
column
shell

Fig
ST
4

Removing
steering
column

upper
side

ST
2

STEERING

6

Remove
six

bolts
used

to
secure
the

steering
column

hole
cover
to
the

dash
board

Fig
ST
5

Removing
steering
column
hole
cover

7
Remove

the
shift
rod
and

select
rod
from
the

change

lever
and
select
lever
after

removing
the

cotter

pin
from

the
trunnion

8
Disconnect
the

gear
arm
from
the

crOSS
rod

9
Remove

three
bolts
used
to

secure
the

steering
gear

housing
to
the

body

Fig
ST
6

Removing
steering

gear
assembly

10

Pull
the

steering
gear
and
transmission

control

toward
the

engine
compartment

11
Remove
the
transmission
control
from
the

steering

gear
assembly
as
outlined
under
Transmission

control
DISASSEMBLY

1
Remove

the

steering
gear
arm

fIxing
nut
and

pull
out

the

gear
arm

using
a

Steering
Gear

Arm
Puller

ST27140000

2
Remove
the

drain

plug
and
drain
the
oil
from

the

steering
gear
housing

3
Loosen
the

adjusting
screw
nut
and

turn
the
sector

shaft

adjusting
screw
a

few
turns
counterclockwise

Remove

four
sector
shaft

cover

fIxing
bolts
and

pull

the
sector
shaft
cover
with

sector
shaft
from
the

gear

housing

t

I

gJ

I

I

Fig
ST
7

Removing
sector

shaft
cover

4
Remove

four
fIxing
bolts

securing
the

column

jacket

to
the

gear
housing
and

pull
out
the
main
column

jacket

assembly
from
the

gear
housing

Fig
ST
8

Removing
main
column

ST
3

CHASSIS

Note
Be
careful
not
to
allow
the
ball

nut
running
down

to
either
end
of

the
worm

The
ends
of
the
ball

guides
will

be

damaged
if

the
nut
is
allowed
to

rotate
until

stopped
at
the
end
of

the
worm

5
Pull
out
the
column

assembly
from
the
column

jacket

6
Remove
the

sector
shaft
oil
seal

7
Take
out
the

rear

bearing
outer
race
from
the

column

jacket
using
a

puller

8

Take
out
the

bearing
inner

races
from
the
front
and

rear

worm

bearings

9
Remove
the

column
shaft

bearing

Ball
nut

assembly

If
the
ball
nut

assembly
or

column
is

defective

recommend
the
column

assembly
to
be

replaced
because

assembly
and

adjustment
of
the
column

assembly
are

very

difficult

However

for

your
reference

disassembly
assembly

and

adjustment
are
described
as
follows

Disassembly

L
Remove
the

damp
of
the
ball

guide
lube
and

withdraw
the
ball

guide
tube
out
of
ball
nut

2
Turn
the

nut

upside
down
and

rotate
the

column

back
and
forth
until
all

38
balls
are

dropped
out
of

ball

nut
With
the
balls
removed
the
nul
can
be

pulled

endwise
off
the
column

Note
Be
careful
not
to
lose
the
balls
and
make
sure
that

total
number
of
balls
is
60
balls
7
32
in
dia

l

Inspection

Check
ball

guide
tubes
for

damage
at
the
ends

where

they
pick
up
the

balls
from
the
helical

path
Replace

guide
tubes
if

damaged
Assembly
and

adjustment

1
Assembie
the
ball

nut
on
the

worm
with

the
ball

guide
hole

up

2

Drop
19
balls
into

each
of

two
hoies
on
the

same

side

of
ball

nul

Turn

the
column

gradually
away
from
the

hole

being

filled

Continue
until
all
38
balls
are
installed

Note
I
n
cases
where
the
balls
are

stopped
by
the
end
of

the
column
hold

down
these
balls

already
dropped

into
the
ball

nut
with
the
blunt

end
of

a
clean
rod

or

punch
and
turn

the
column
in
the
reverse

direction
a
few
turns

The

filling
of
the
circuit
can
then
be
continued

It

may
be
o

ry
to
work
the
column
back
and

forth

holding
the
balls
down
first
in

one
hole
then

the
other
to
close

up
the

space
between
the
balls

and
fill
the
circuit

completely
and

solidly

3

Place

remammg
22
balls

in
halves
of
ball

guide

tubes
11
each
of

two
halves

4

Close
this

half
of

guide
tube
with
the
other

half

Hold
the

two
halves

together
and

plug
each

open
end

with
vaseline
so
that
balls
will

not

drop
out
while

installing

5

Push
the

guide
tubes
into
the

guide
holes
of
the

ball

nut

6

Assemble
the

ball

guide
tube

clamp
to
the

ball
nut

INSPECTION
AND
REPAIR

I
Measure
axial

clearance
between
the
steel
balls
and

ball

nut
and
if
the

clearance
is

more
than
0
08
mm

0
0031

in

replace
the

parts
as
a

complete
unit

2

Inspect

gear
teeth
of
sector
shaft
and
ball

nut
for

wear

or

damage
If
there
is

any
sign
of

damage
replace

3

Inspect
bearings
for
wear
or

chip
Replace
bearings
as

required

4

Inspect
the
serration
of
sector

shaft
and

colunm
for

wear

ST
4

STEERING

ASSEMBLY
AND

AD
JUSTMENT

Tightening
torque
1
5
to
2
5

kg
m

110
8
to
18
1

ft
lb

II

1
r
I
II

U
J

Standard
shim
O
5mm
0

0197
in

1

Press
in
oil
seal

into
the

housing
Tightening
torque
1
7

to
2
8

kg
m
12
3

to
20
2
ft
Ib

Tightening
torque
2
0

to
3
0

kg
m

14
5
to

21
7
ft
Ib

Clearance

of

adjusting
screw

to
sector
shaft
0
05

mm

0
0020
in

L

Apply
grease
here

I
when

assembling

Pitman
arm

Tightening
torque
14kg
rn

101
ft
Ib

Fig
ST

9
Sectional
view

of
steering
gear

Note

Apply
chassis

grease
to
the
oil
seal

lip
before

assembling

2
Insert

the
column

assembly
into
the

column

jacket

completely
and
install

them
with
worm

bearing
shims

to

the

gear
housing
by
four

flange
fixing
bolts
Tightening

torque
is
1
5
to
2
5

kg
m

10
8
to
18

1

ft
lb

3

If

replacement
of
column

bearing
assembly
is
nece
r

sary
a
new

bearing
assembly
should
be
filled
with

bearing

grease
and
then
cemented
to

the
column

ST
5

I

CHASSIS

4

Adjust
the

preload
of
the
worm

bearing
by
selecting

the
thickness

of
he

worm

bearing
shim
five
kinds
0
05

to
0
20

mm
0
0020
to
0

0079
in
so
that
the
initial

torque
of
the

steering
wheel
is
2
0

to
5
0

kg
cm
27
8

to

694
in
oz
without
sector
shaft

J

Fig
ST
10

Measuring
initial

tunring
torque

Note

Apply
oil
on
the
worm

bearings
The

turning

torque
wheel
in
motion
should
be
100
to
250

gr

13
5
to
8

8
oz
at
20
em
7
874
in
radius
of
the

steering
wheel
As
to
the
standard
number
of
worm

bearing
shims
refer
to
the

following
table

Worm

bearing
shim

Thickness
mm
in

0
05
0
0020

0
07
0
0028

0
08
0
0031

0
10
0
0039

0
20
0
0079

5

Sector
shaft
lash

adjuster
end
clearance
Assemble

lash

adjuster
with

shim
in

the
slot
of
the

sector
shaft
end

Measure

clearance
0
05
mm
0

0020
in

To
obtain
this
clearance

five
various

thickness
shims

are
available
Adjusting
screw
shim

Thickness
mm

in

1
515
to
1
535
0
0596

to
0
0604

1
545

to
1
565
0

0608
to
0
0616

1
575
to
1
595
0
0620
to
0

0628

1

605
to
1

625
0
0632
to
0

0640

1
63510
1
655

0
0644
to
0
0652

Fig
ST
J
J

Checking
lash

adjuster
end
clearance

6
Assemble
the
sector

shaft
into

the

gear
housing

I
Rotate

worm

column

by
hand
unlil

ball
nut
is
in
the

center
of
its
travel
so
that
the

center
tooth

of

sector
shaft

enters
into

the
center

tooth

space
of

ball

nut

2

With

new

gasket
in

place
push
the

sector
shaft

cover
with
sector

shaft
in

place

After

making
sure
that

there
is
some

lash
between
the

rack
and

sector
teeth

tighten
side
cover

bolts

Tightening
torque
is
I
7
to
2

8

kg
m

I2
3
to
20
2

ft

lb

Note

Apply
oil
on
the
sector

shaft

3

Lock
the

adjust
screw
with

the

adjusting
screw
nut

temporarily

4
Move

the
sector
shaft

several
times
from
the

side
of

the

gear
arm
and
make

sure
it

turns

smoothly

5
Connect
the

gear
arm
to

the
sector
shaft
When

fitting
the

gear
arm

the

aligning
marks
on
the

gear
arm

and
sector

shaft
should
be

matched

correctly

ST

6

STEERING

6

Adjust
the
backlash
at

the
neutral

point
by
screwing

the

adjusting
screw
so
that
the
movement
of
the

gear
arm

top
end

radius
7
mm
5

00
in
is
within
0
1
mm

0
0039

in
and
lock

temporarily
by
the
nut

Fig
ST
12

Checking
backlash

Fig
ST

13

Adjusting
backlash
7
Fill

gear
oil
about
0
24
liter

I
2
US

pt
3
8

Imp
pt
into

assembly
through
f1ller
hole
and

install
a

mIer

plug

INSTALLATION

Installation
can

be

accomplished
in

the
reverse
order

of

removal

Pay
attention

to
the

following
points

I
Make

sure
that
the

steering
wheel

moves

smoothly

2

Check
the

alignment
of
the

steering
wheeL

3

Free
travel
of

steering
wheel

should
be
20

to
25
mm

0
787
to
0

984
in

COLLAPSIBLE
STEERING

CONTENTS

DESCRIPTION

STEERING
COLUMN

JACKET

TUBE

STEERING
POST
CLAMP
ST
8

ST
9

ST
10

ST
11
COLUMN
BEARING

DISASSEMBL
Y

INSPECTION

REASSEMBL
Y
ST
12

ST
12

ST
12

ST
13

ST
7

CHASSIS

I
l
I

I

2

fa

r

o

Fig
ST
14

Collapsible
steering

DESCRIPTION

This
column
is

designed
to
be

compressed
under
an

impact
When

an
automobile
is

being
driven
the
forward

movements
of
the

automobile
and
the
driver
constitute
a

form
of

energy
or

force
When
the
automobile
is
involved

in
a

head
on
collision
the

primary
force
forward
move

ment
of
the
car
is

suddenly
halted
while

the

secondary

force
the

driver
continues
in

the
forward
direction
A

severe
collision

generally
involves
these
two
forces

primary
and

secondary
The

secondary
impact
occurs

when
the
driver
thrusts
forward
onto
the

steering
wheel

and
column

The

collapsible
column
is

designed
to
absorb

primary

and

secondary
forces
to
the

extent
that

the

severity
of
the

secondary
impact
is

reduced

thereby
reducing
the
tenden
cy
to
move
rearward
into
the
driver
s

compartment
A

split
second
later
when
the
driver
is
thrown
forward
the

secondary

impact
this

energy
is
also

partially
absorbed

by
contraction
characteristics
of
the
column

When
the

collapsible
column
is

installed
in
a

car
it
is

no
more

susceptible
to

damage
than
an

ordinary
column

however
when
the
column
is
removed

special
care
is

required
in

handling
the

assembly
When
the

column
is

removed
from
the

car
such
actions
as
a

sharp
blow

on
the

end
of
the

steering
shaft

or
shift
levers

leaning
on
the

column

assembly
or

dropping
of

the

assembly
could
bend

the

steering
column

jacket
especially
the
bellows

part

which
absorbs
the

energy

ST
8

STEERING

CD

f
w

1
rI

r

EoJiI
c

@
j
@
3
2
j

Jl

1
Lower
column
shaft

2

Upper
column

shaft

3
Lower
column

tube

4
Jacket
tube
5

Plastic

pin

6
Column
collar

7

Column
bush
8

Washer

9

Snap
ring

10

Steering
post
clamp

Fig
ST
15

Collapsible
steering

STEERING
COLUMN

G

ZJ
3

4mi
t
i
r
M
m

i
i
Vtrt
J
trict

I
LoweI
column
shaft

2
Plastic

pin

13

I
Upper
column

shaft

14
I
Lower
column
tube

Fig
ST
16

Steering
column

ST
9

CHASSIS

The

construction
of
the

steering
column
is

as
such
that

the
lower
shaft

is
fitted
into
the

upper
tube
when
a

compressing
force
is

applied
to
the
lower

shaft

r

I

1
V

f

7
Steering
torque
is
transmitted

by
the
lower
shaft

and

upper
tube
The
lower
shaft

adopts
a

special
shape
a

circle
with
two

straight
cut

edges
and
the

upper
tube

interior
is

tightly
fitted

against
the

lower
shaft
exterior

toward
the

entire
area
In
addition
four

plastic
pins

completely
eliminate

gap
between
the
lower

shaft
exterior

and

upper
tube
interior

I

I
Jacket
lube

2
Shaft

stopper

I
3

I
Column
coUar

4

Column
shaft

When
a

compressing
force
is

applied
the
above

described

plastic
pins
are
cut
and
the
lower

shaft
is

fitted

into

the

upper
tube

When
the
lower

shaft
is

once
fitted

into

the

upper
tube
the

shaft
end

spreads
and
the
lower

shaft
cannot
be
withdrawn
unless
an

extremely
high
load

is

applied
Fig
ST
1
7

Shaft
stopper

Moreover

for
rearward
column
shaft

projection
the

collar
for

steering
lock
installed
on
the
shaft

runs

against

stoppers
in
three

places
on
the

jacket
tube
which
allows

the
column
shaft

fitting
and
thus
reaIWard

projection
is

prevented

Note
In
no
event
should
an

impact
or

large
power
be

applied
to
the
shaft

with
a
hammer
or
other
matter

during
disassembly
or

reassembly
The

column
shaft
lower
end
and

upper
end

are

supported

respectively
by
two

worm

hearings
and
a

colwnn

bushing

JACKET
TUBE

w
1

U
II
I

II

I

r

liJl
I
I
D

I
1

1
Mesh
tube

I
2
Jacket

tube

Fig
ST
18

Jacket
tube

ST
10