fuel tank capacity DATSUN B110 1969 Service Repair Manual

Fuel

Sptem

Testing

A
fuel

pump
IS

operatIng
properly
when

1tS

pressure
IS
Within

specifications
and
ItS

capacIty
IS

equal
to

the

engine
s

reqUIrements

at
all

speeds

Pressure
and

capacity
must

be
determined

by

two
tests
With
the

pump
mounted
on
the

engIne
Be

sure
that

there
IS

gasohne
m

the

tank

when

conductIng
these

tests

Fig
89
Pull

rod
removal
StatIc

Pressure
Test

The
static

pressure
test
IS
conducted

as

follows

Disconnect
the
carburetor

fuel
line
at
the

car

buretor

Install
the

necessary

adapter
and
tee

fitting

to
the
fuel
Ime
and
attach

a
SUitable

pressure

gauge

Start

and
run

engme
at

varymg
speeds

The

readIng
on
the

gauge
IS

the
static

fuel

pressure
and

thIS

should
remam
wlthm

the

follOWing
Itmlts

2
61b

sq
m

Pressure

below
the
lower
hmlt

IndlCates
ex

treme

wear
on

one

part
of
a
small
amount

of

wear
on
each

working

part

They
also
md1cate
a

ruptured
dIaphragm

worn

warped
dirty
or

gummmg
valves
and

seats

or
weak

dIaphragm
return

spring

Pressure
above

the

upper
hmlt

Indicates
an

excessIVely
strong
dIaphragm
that

IS
too

tight

ThIS

condItIOn

reqUIres
removal
of
the

fuel

pump

assembly
for

replacement
or

repair

I

V
lvc
llllh

2

PdlklOg

3
Retamer

4

Stre

5

p

6

Ga
ket

7
Screw

8
Washer

prln

9
Rocker
Jrm

10
Rocker

pm

II

Ro
ker
fm

pTln

12

Spdcer

13

Diaphragm
assembly

14

15
Retiuner

16

Diaphragm
sprtng

17
Washer

5PIlllg

18
Nul

19
Washer

plalO

20
Ga
ket

21

Spacer

22

Complete
body
lower

23
Connector
anlet

24
Connector
outlet

Fig
90
Structure

of
fuel

pump

51

Fuel

Sptem

Capacity
Test

The

capaclty
test

IS
used

only
when
the
statIc

plessure
IS

wlthm

specIficatIOns
The

capacity

test

IS
conducted

as
follows

Disconnect
the
fuel

p1pe
at
the
carburetor

Place
a
bUltable

contamer
at
the
end
of
the

pIpe

Start
the

engme
and
run
at
1

000

rpm

The

pump
should
delIver
1
US

pt
of
fuel
In

one
mmute
or
less

If

no

gasolme
or

only
a
lIttle
flows
flOm

open

end
of

pIpe
the
fuel

pIpe
IS

clogged
or
the

pump
I

malfunctlOntng
Before

removing
the

pump
remove
the

gas
tank

cap
dIsconnect

both
Inlet
dnd
outlet

pIpes
and
blow

through

them
wIth
an
aIr
hose
to
make

sure
that

they

are
clear

Thl
wIll
elImmate

pOSSible
clogged
gas

tramer
In

the
fuel
tank
Reconnect
the

pIpes

to
the

pump
and
rete
t
flow

Removal
and

DisassenbIy

Remove
the
fuel

pump

assembly
by
un

screwmg
two

mounting
nuts
and
dIsassemble

In
the

follOWing
order

Separate
the

upper

body
and
the
lower

body

by
unscrewmg
the

body
set
screws

Take
off
the

cap
and
the

cap

gasket
by

I

emOVIng
the

cap
screw

Unscrew
the
elbow
and
the
connector

Take
off
the
valve
retainer

by
unscrewmg
two

valve
retamer
screws
Two
valves
are

eaSIly

removed

To
remove
the

diaphragm
diaphragm
sprmg

lower

body
seal
washer
and
lower

body
seal

from

the
lower

body
press
down
the

dIaphragm
counter
to
the
force
of
the

dIaphragm
spring
and
while

dOIng
thIS
cant

the

dIaphragm
so
that
the

rectangular
part
m

the
lower
end
of
the

pull
rod
IS

unhooked
from

the
rocker
arm
lInk

Inspection

Check
the

upper
and

lower
bodIes
for
cracks

2
Check
the
valve

assembly
for
wear
of
the

valve
and
valve

sprmg
Blow
the
valve
assem

bly
by
breath
to
examme
ItS
functIOn

Check

the

dIaphragm
for
small
holes
cral
ks

and

wear

Check
the
rocker

dl
m

for
wear

at
the

portIOn

In
contact
With
the
camshaft

Check
the
rocker
arm

pin
for
wear

since
a

worn

pm
may
cause
011

leakage

Check
all
other

components
for

any
abnor

mahtIes
and

replace
With

new

parts
as

requIred

Assembly

Assembly
IS
done
In

reverse
order
of
disassem

bly
For

reassembly
and
remstallatlOn
the

followmg
matters
should
be
noted

Use
new

gasket

Lubricate
the
rocker
arm
link
rocker
arm

pm

and
lever

pm
before
mstallatlOlI

To
test

the
functIOn

poSItIOn
the
fuel

pump

assembly
about
33ft
above
fuel
level
WIth
a

pipe
connecting
the
fuel

pump
and
the
fuel

filter
and

operate
the
rocker
arm

by
hand
If

fuel
IS
drawn

up
soon
after

the
rocker
arm
IS

released
the
functIOn

of
the

pump
IS

satIsfactory

CARBURETOR

Description

The
carburetors

are
of
a
downdraft

type

whIch

IS

deSIgned
and
bUIlt
to

Increase

power

and
fuel

economy
as
well

as
to
reduce
the

em1SSlon
of
exhaust

gases

These
carburetors

present
several
dIstinct

features
of

Importance
to
the

car
owners

A

summary
of
features

IS
as
follows

Secondary
throttle
valve

IS

operated
by
throt

tie
lever
The

hIgh

power
and

good
ac

celeratIon

are

gained
With

combmatlOn
of

the

auxlhary
valve

Acceleratmg
pump
glves
excellent
ac

celeratIon

Specifications

ALTERNATOR

Make
and

type

NonunaJ

output
VA

Pole

Revolution

rpm

No
load
mmunum

revolu
bon

rpm

Output
current
A
V

rpm

Weight
kg
lb

Applied
regulator
HITACHI
LTl3S
13B

12
35

NegatIve
ground

1

000
to
13
500

less
than
I

000

more
than
28

14
2
500

34
7
5

TLI
Z
57

APPROXIMATE
REFILL
CAPACITY

Dter
USA
measure

lmp
measure

Sedan
40

t
10

X
gal
8Y
gal

Fuel

tank

Coupe
38
t
10

gal
8

gal

with
heater
49
t
5
X

qt
4

X

qt

Coohng
system

without
heater
42
t
4

yt

qt
3

X

qt

Od

pan
27
t
2X
ql
2

qt

Od
filter
054
t
IX

pt
I

pi

Transmission
case
Manual
12
t

2X

pt
2X
t

Automatic
55
t

5X

qt
4X

ql

Dlfferenttal
case
o
75

t
I

pI
IX

pI

Steenng

gear
box
024
L

X

pi
X
pt

H3