1973 DATSUN B110 roof

BODY

UNDERBODY
ALIGNMENT

CONTENTS

UNDERBODY
GENERAL
SERVICE

INFORMATION

ALIGNMENT
CHECKING
PROCEDURE
BF
9

BF
9

UNDERBODY
GENERAL

SERVICE

INFORMATION

Since
each

underbody
component
directly
affects
the

overall

strength
of
the

body
it
is
essential
that

proper

welding
sealing
and
rust

proofing
techniques
be
observed

during
service

operations

Whenever
the

body
is

repaired
be

sure
to
provide
the

repaired
body
parts
with

rust

proof

In
the

case
of
a

rust

proofmg
critical

underbody

component
it
is
essential
that
a

good
quality
type
air

dry

primer
such
as
corrosion
resistant
zinc
chromate
be
used

Do

not
use
combination

type
primer
surfacers

ALIGNMENT
CHECKING

PROCEDURE

Misalignment
in
the

underbody
affects
the
front

fender
door
trunk
lid

and
window

alignments
and
also

the
tail

gate
and
rear

body

opening
alignments
in
the

case

of
a
station

wagon
or
van

Underbody
misalignment

particularly
affects

the

suspension
system
thereby
causing

various

problems
that
arise
from

suspension
misalignment

It
is
essential
that

underbody

components
be

aligned

within
the

specified
dimensions

given
in

Figures
BF
13
14

and
IS

In

the
event
of

collision
damage
it
is

important
that

underbody
a1ignrnent
be

thoroughly
checked
and
if

necessary
realigned
to
the

specified
dirnensions

There
are

many
tools
that

may
be

ernployed
to
correct

collision

damage
such

as
frame

straightening
machines

external

pulling
equipment
other
standard

body
jacks
PRINCIPLES
OF
TRAMMING

CAR
PREPARATION

TRAMMING
SEQUENCE
BF
9

BF
10

BF
10

To
assist
in

checking
alignment
of
the

underbody

components
repairing
minor

underbody
damage
or

locating
replacement
parts
the

following
underbody

dimensions
and

alignment
checking
information
are

presented

PRINCIPLES
OF
TRAMMING

All
reference
locations
shown
in

Figure
BF
13
14
and

15

are

symmetrical
at
the
centerline
of
the
vehicle
For

example
wheo

performing
a
crosHheck
of
the

body
floor

panel
dimensions

Figures
BF
I3
14

and
IS
the

diagonal
measurement
should
be
the

same
in
boflii

directions
Cross

checking

operations
are
used
to
deter

mine
the

relationship
between
two
locations
on
the

underbody

To

measure
the

distance
between

any
two

reference

points
on
the

underbody
accurately
two

specifications

are

required

I
The

horizontal
dimension
between
the
two

points
to

be

measured

2
The
vertical
dimension
from
the
datum

line
to
the

points
to
be
measured
For
an

example
the

diagonal

measurement
calculated
on
a
horizontal

plane
between

reference

points
of
dimension
line
L
shown
in

Figure

BF
I3
is
631
3
mm
24

8
in
The

specifications
from
the

datum

line
have
a
vertical

height
difference
of
11
6

mm

0
456
in
between
the

forward
location
of
dimension

L

at
vertical
dimension
80
0
mm
3
150
in
and
the

rearward
location
of
dimension
L
at

vertical
dimension

91
6
mm
3
606
in
The

vertical

pointer
used
at
the

forward
location
should

be

positioned
so
as
to
extend

11
6

mm
0
456
in

further
from
the
tram
bar
than
the

BF
9

7
Remmre
three

screws
from

top
of
the
instrument

one
each
installation
bolt
frorn
both
sides
of
the
bottorn

and
two
bolts
used
to
secure
the
instrument

panel

together
with
the

steering
column
clamp

8

Raising
the
instrument

panel
slightly

pull
it
toward

rear
side
of
the

vehicle
and
remove
it

Note

Ensuring
that
all
cables
are
disconnected
remove

the
instrument

panel
slowly
aoo

carefully

REINSTALLATION

Reinstall
the
instrument

panel
in
reverse

sequence
of

removal
BODY

Fig
BF
90
Removing
instrument

panel
II

ROOM
TRIM

INSTALLING
HEAD
LINING

IA

P

AV

FRONT

A
A
IB
A

L

Adhesive

Detailed
view
of

A

portion

B
B

Be
sure
to
hook
the

clamp
securely

Fig
BF

91

Installing
head

lining

Note
Be

sure
to
install
the
roof
insulator
before

installing
the
head

lining
J

BF
43

mechanism
is
installed
on
the

steering
jacket
tube
When

the

key
is
set
to

Lock

position
and

removed
the

steering
lock

spindle
is

inserted
in
a
notch
in

the
collar

which

is

stationarity
set
on
the

steering
shaft
to
lock
the

steering
wheel

The

ignitiun
switch

is
installed
on
the

back
of

key

cylinder
with
a

attaching
screw
and

interchangeable

tf
iY
t

7

a

1

Ignition
switch

part

2

Key
cylinder

part

3

Steering
jacket
tube

4
Lock
collar
5
Lock

pindle

6

Steering
shaft

7
Self

shear

type
screw

8

Attaching
screw

Fig
BE
50

Steering
lock

Key

position

Terminal
OFFor

GARAGE
Lock
ON

ST
ART

B

Battery

IG

Ignition

S
Starter

R
Resistance
b

1

Steering
lock

replacement

For
the

purpuse
of

tamper
proof
the
self
shear

type

screws
are

used
and
their

heads
are
sheared
off
when

installed
so
that

the

steering
lock

system
cannot
be

removed

easily
Replace
the

steering
lock

proper
in

accordance
with
the

following
instructions
when

required

Loosen

two

attaching
screws
and
break
the

remaining

twu
self
shear

type
screws
with

a
drill

or
other

proper

tool

Now
remove
the

steering
lock

proper
from
the
BODY

BE
30
steering
jacket
tube
When

installing
a
new

steering
lock

proper
be

sure
tu

tighten
two
new
self
shear

type
screws

to
shear

off
their

heads

Warning
switch
and

warnmg
buzzer

Fig
BE
51

Warning
switch

The
circuit
of
this

warning
system
is
closed

when
the

door
is

opened
with
the

steering
unlocked
because
the

door
switch
and

warning
switch

are
connected
in
series

When
the
cicuit
is
closed
the

buzzer
sounds

When

replacing
the

warning
switch
disconnect

two

cables
remove
the

cap
loosen
two

attaching
screws
and

remove
the

warning
switch

The

warning
buzzer
is
installed

on
the

back

left
side

of
the
instrument

panel
with

two

attaching
screws

FUSE
WARNING

SWITCH

WARN

BUZZ
G

n

WITCH

t

Fig
BE
52
Circuit

diagram
for

warning
system