1973 DATSUN B110 height

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

Tool
number

Tool

name

STl9
I
50000

Anti

dieseling

solenoid

spanner

Clutch
tool

ST20610000

Clutch

aligning

bar

ST20101000

Clutch

assembly

base

plate

ST20059001

Clu
tch

assembly

distance

piece
SERVICE
EQUI

PMENT

Figure

mm
inch

12

10
4721

0
o

8

C
307

l
j

@@

SE
4
Description

For

installing
the
anti

dieseling

solenoid

spanner

For

centering
the
clutch
disc

For

measuring
the

diaphragm

spring
height
Use
with
the

distance

piece

For

measuring
the

diaphragm

spring
height

Use
with
the

base

plate
S
M
reference

page
See

Fig
No

Page
EF
12

Page
ET
9

Fig
CL
14

Fig
CL
5

Fig
CL
5

Tool
number

Tool
name

ST20105000

Diaphragm
adjust

wrench
SERVICE
EQUIPMENT

Figure

mm
inch

Manual
transmission
tool

ST22350000

Main
shaft

bearing

drift

ST23030000

Counter
shaft

bearing

press

stand

ST23050000

Counter

gear

height

gauge

SE
5
Description

For

measuring
the

diaphragm

spring
height

For

assembly
of
the
main

shaft

bearings

For

assembly
of
the
counter

shaft

bearings

For

measuring
the
counter

bearing
height
from
the
trans

mission

case
rear
end
S
M

reference

page
See

Fig
No

Fig
CL
7

Fig
TM
36

Fig
TM
39

Fig
TM
30

Fig
TM
31

Tool
number

Tool
name

ST30600000

Drive

pinion

bearing
drift

ST31121000

Heigh
t

gauge

ST31122000

Dummy
shaft

ST3154llllUll

Drive

pinion

flange
wrench

ST3250S000

Side

bearing

adjust
weight
SERVICE
EQUIPMENT

Figure

mm

inch

15516
101

36114171dia

31
1
220
dia

70

2
756

cHa

r

84
513
271

20
O
Je7l
diil

L

9I17510Y

sE
lO
Description

For

installing
the
drive

pinion

rear
bearing
inner
race

For
height
adjustment
of

the

drive

pinion

For

height
adjustment
of
the

drive

pinion

For
removal
of
the
dri
ve

pinion
nut

For

determining
the
side

bearing
adjust
shim
S
M

reference

page
See

Fig
No

Page
PD
II

Fig
PD

22

Fig
PD
23

Fig
PD
22

Fig
PD
23

Fig
PD
12

Fig
PD
25

ENGINE

3
Connect
a
3

way
connector
a

manometer
and
a

cock
or
an

equivalent
3

way
change
cock
to
the

end

of
the

vent
line

4

Supply
fresh
air
into
the

vapor
vent
line

through
the

cock
little

by
little

until
the

pressure
becomes
368

mm

Aq
14
5
in

Aq

5
Shut
the
cock

completely
and

leave
it
that

way

6
After
2
5
minutes
measure
the

height
of
the

liquid

in
the
manometer

7
Variation
of

height
should
remain
within
254

mmAq
1
0
in

Aq

8
When
the
filler

cap
does
not
close

completely
the

height
should

drop
to
zero
in
a

short
time

9

If
the

height
does
not

drop
to
zero
in
a

short
time

when
the

filler

cap
is
removed
it
is
the
cause
of
the

stuffy
hose

Note
In

case
the
vent
line
is

stuffy
the

breathing
in

fuel

tank
is
not

thoroughly
made
thus

causing

insufficient

delivery
of
fuel
to

engine
or

vapor

lock

It
must
therefore
be

repaired
or

replaced

3

way

connector

Cock

Air

Manometer
Vapor
liquid

seearator

Flow

guide
valve

E

CQ29

Fig
ET
40

Checking
evaporative
emission
control

system

Checking
flow

guide
valve

I
Disconnect
all
hoses
connected
to
the

flow

guide

valve

2
While
lower

pressure
air
is

pressed
into

the
flow

guide
valve
from
the
ends
of
vent
line
of

fuel
tank
side

the
air
should

go
through
the
valve
and
flow
to

crankcase

side
If
the
air
does
not
flow
the

valve
should

be

replaced
But
when
the
air
is
blown
from

crankcase

side
it
should
never
flow

to
the
other

two
vent
lines

3
While

the
air
is

pressed
into

the
flow

guide
valve
from
the
carburetor
air

cleaner
side

it
flows
to
the

fuel

tank
side
and
or

crankcase
side

4

This
valve

opens
when
the

inner

pressure
is
10

mmHg
0
4
in

Hg
In

case
of

improper

operations
or

breakage
replace
it

From

carburetor

air
cleaner

From
fuel
tank

i

I
I

ti

i

i

1
1

i
To
ran
kcase

E
C030

Fig
ET
41
Flow

guide
valve

Checking
fuel
tank

vaCCUID
relief

valve

operation

Remove
fuel
filler

cap
and
see
if
it
functions

properly

as

follows

Wipe
clean
valve

housing
and
have
it
in

your
mouth

2

Inhale
air
A

slight
resistance

accompanied
by
valve

indicates
that
valve
is
in

good
mechanical
condition
Note

also
that

by
further

inhaling
air
the
resistance
should
be

disappeared
with
valve
clicks

3

If
valve
seems
to
be

clogged
or
if
no
resistance
is
felt

replace
cap
as
an

assembled
unit

T

1i
v

rUr1f
AlI
j

r
I
r
tLMJJl

rr
L

cc

11

J
v

II

4J
L

Valve
I

valve
seat

Spring
Valve

housing

Fig
ET

42
Fuel

filler
cap

ET
24

ENGINE
MECHANICAL

Bendin9
limit
0
05mm
0
0020
in

Standard
0
of5mm
0
0006
in

or
less

Fig
EM
44

Camshaft
bend
check

Standard

height
of
cam

mm
in
36
45
to
36
55

I
435
to
I
439

Wear

limit
of
cam

height

mm
in
0
5
0
0197

Allowable
difference
in

diame

ter
maximum
worn
and
mini

mum
worn

parts
of
camshaft

journal
mm
in
0
03

to
0
07

0
0012
to
0
0028

Maximum
tolerance
in

journal
diameter

mm
in
0
1

0
0039

Camshaft
end

play

mm
in
0
02

to
0
08

0

0008
to
0

0031

CYLINDER
BLOCK

Check
the

cylinder
head

visually
for
defects
such
as

cracks
and
flaws

2

Measure
the

top
of
the

cylinder
block
cylinder
head

mating
face
for

warping
If
the

warp
exceeds
the
limit

correct
it

EM
15
Standard
Maximum

tolerance

Surface
flatness
less
than

mm
in
0
05
0
0020
0
1
0
0039

Distortion
limit
0
10mm
0
0039
in

Standard
0
05mm
0

0020

inLor
less

Fig
EM
45

Cylinder
block

surface
check

3
Measure
the

cylinder
bore
for
out
of
round
and
wear

with
a
bore

gauge
If
wear
or
out
of
round
is
excessive

rebore
the

cylinder
walls

by
means
of
a

boring
machine

Wear
limit
0
2mm

0

0079

Fig
EM
46

Measuring
the

cylinder
bore

4
When
wear
or

out
of
round
is
minor
and
within
the

limit
remove
the

step
from
the

topmost
portion
of

the

cylinder
by
the
use

of
a

ridge
reamer
or
other
similar
tooL

ENGINE

Fig
EM
75
Piston
and

connecting
rod

assembly
installation

Notes
8

I
nsert

the

pistons
in
the

corresponding
cyl

inders

b

Apply
engine
oil
to

parts
as

requried

c

Arrange
pistons
so

that
the
F
mark
on
the

piston
is
faced
to

the
front
of
the

engine

d
Install

piston
rings
at
180
to
each
other

avoiding
to
fit
them
in
the
thrust
and

piston

pin

axial
directions

Fig
EM
76

Connecting
rod

cap
installation

Note

Arrange
connecting
rods
and

connecting
rod

caps

so
that
the

cylinder
numbers
are
faced

toward
the

same
direction

EM
28
q

Install

the

connecting
rod

cap

Tightening

torque

32
to
3
8

kg
m
23
I

to
7
S
ft
lb

10
Make

sure
that
end

play
of
the

connecting
rod

large

end
is

correct

Big
end

play

j

I

Fig
EM
77

Big
end

play
check

Big
end
end

play
0
2

to
0
3

0

0079
to
0
0118

11
Install
the
camshaft
and

crankshaft

sprockets

temporarily
for

adjustment
of
the
tooth

height
by

using

adjusting
washers

Height
difference

mm
in
less
than
O
S

0
0197

Adjusting
washer

thickness
mm

in
O
IS
0
006

Fig
EM
78

Adjusting
sprocket
tooth

height

ENGINE

SPECIFICATION

a
Valve
mechanism

Valve
clearance
Hot

Intake
mm
in

Exhaust
0
35
0
0138

0
35
0
0138

Valve
clearance
Cold

Intake

Exhaust
mm

in

0
25
0
0098

0
25
0
0098

Valve
head
diameter

mm
in

Intake
35
1
378

29
1
142
Exhaust

Valve
stem
diameter

mm
in

Intake
7

970
to
7
985

0
3138
to
0
3144

7

945
to
7

960
0
3128
to
0
3134

Exhaust

Valve

length
mm
in

Intake

Exhaust
102
35

to
102
65
4
030
to
4

041

102
35

to
102

65
4
030

to
4
041

Valve

spring
assembled

height
111m

kg
in
lb
8
5
0

3346

46
5
1
831

30
2
58
5
1
I99

129

38
7
23
9
1
524
52
7

5
0
Valve
lift

mm
in

Valve

spring
free

length
mm

in

Valve

spring
loaded

length
mm

kg
in
lb

Valve

spring
effective
turns

Valve

guide
length
111m

in
4
100
0

1614

26
4
1

031
1

53
2
087
Valve

spring
wire

diameter
mm

in

V
alve

sp
g
coil
diameter

inm
L

Valve

guide
height
from

head

surface
111m

in
18
0
709

Valve

guide
inner
diameter

mm
in

Intake
8
015

to
8
000
0
3156
to
0
3150

Exhaust
8
015
to
8
000
0
3156
to
0

3150

EM
34