1973 DATSUN B110 water pump

through
all
drive

positions
and

place

the
lever
in

park
P

position
In
this

inspection
the
car
must
be

placed
on
a

level
surface

The
amount
of
the
oil

varies
with

the

temperature
As
a
rule
the
oil

level

must
be

measured
after
its

tempera

ture
becomes

sufficiently
high

I
Fill
the
oil

to
the
line
H

The

difference
of

capacities
between
both

H

and
L

is

approximately
0
4

liter
7
8

U
S

pt
3
4

Imper

pt
and

therefore
take

care
not
to
fill

beyond

the

line
H

2
At
the
time
of
the

above

topping
up
and

changing
of
oil
care

should
be
taken
of
to

prevent
mixing

the
oil
with
dust
and

water

2

Inspecting
oil
condition

The
condition
of
oil

sticking
to
the

level

gauge
indicates
whether
to
over

haul
and

repair
the
transmission

or

look

for
the

defective

part

If
the

oil
has
deteriorated
into

a

varnish
like

quality
it

causes
the
con

trol
valve
to

stick
The
blackened
oil

gives
the

proof
of
the
burned
clutch

brake
band

etc
In

these
cases
the

transmission
must
be

replaced

Notes
a
In

oil
level

checking
use

special

paper
waste
to

handle

the
level

gauge
and
take

care

not
to
let
the

scraps
of

paper

and
cloth

tick
to
the

gauge

b
Insert

the

gauge
fully
and

take

it
out

quickly
before

splashing
oil
adheres
to
the

gauge
and
theu
observe
the

level

c

Use
automatic
transmission

fluid

having
DEXRON

iden

tIficatIon

only
in
the
3N71
B

automatic
transmission

d

Pay
atteutIon

because
the

oil
to

be
used
dIffers
from
that

i

used

in
the
Nissan
Full

Automatic

Transmission

3N7IA

Never
mix
the
oil
with

that
CHASSIS

Inspection
and

repair
of
oil

leakage

When
oil

leakage
takes

place
the

portion
near
the

leakage
is
covered

with
oil

presenting
difficulty
in
de

tecting
the

spot
Therefore
the

places

where
oil

seals
and

gaskets
are

equipped
are

enumerated
below

I
Converter

housing

The
rubber

ring
of

oil

pump
hous

ing

The
oil

eaI
of
oil

pump
housing

The
oil

seal
of

engine
crankshaft

The
bolts
of
converter

housing
to

case

2

Transmission
and
rear
extension

Junction
of
transmission
and
rear

extension

Oil
tube
connectors

Oil

pan

Oil

pressure
inspection
holes
Refer

to

Figure
AT

112

The

mounting
portion
of
vacuum

diaphragm
and

downshift
solenoid

Breather

and
oil

charging

pipe

Speedometer
pinion
sleeve

The
oil
seal

of
rear
extension

To

exactly
locate

the

place
of
oil

leakage
proceeds
as
follows

Place
the

vehicle
in
a

pit
and

by

sampling
the

leaked
oil
examine

whe

ther

it
is
the

torq
le
converter
oil
or

not

The

torque
converter
oil

assumes

color
like
red
wine

when

shipped

from
the

factory
so
it
is

ea

ily
distin

guished
from

engine
oil

or

gear
oil

Cleanly
wipe
off
the

leaking
oil
and

dust
and
detect

the

spot
of
oil

leakage

Use
nonflammable

organic
solvent

such
as
carbon

tetrachloride
for

wip

ing

Raise
the

oil

temperature
by

op

erating
the

engine
and

shift
the

lever

to
0
to

heighten
the

oil

pressure

The

spot
of
oil

leakage
will
then

be

found

more

easily

Note

A

the
oil

leakage
from
the

breather
does
not
take

place

except
when

running
at

high

speed
it
is

impossible
to
locate

the

spot
of

leakage
with
vehicle

stalled

AT
50
Checking
engine
idling

rprn

The

engine
idling
revolution
should

be

properly

adjusted

If
the

engine
revolution
is

too
low

the

engine
does
not

operate
smoothly

and
if

too

high
a

strong
shock
or

creep
develops
when

changing
over

from
N

to
D
or

R

Specified

idling
speed

650

rpm
at
D

position

800

rpm
at
N

position

Checking
and

adjusting
kick

down
switch
and

downshift

solenoid

When
the

kick
down

operation
is

not
made

properly
or

the

speed
chang

ing
point
is
too

high
check
the

kick

down
switch

downshift
solenoid
and

wiring
between
them

When
the

igni

tion

key
is

positioned
at
the

1st

stage

and
the

accelerator

pedal
is

depressed

deeply
the
switch
contact
should
be

closed
and
the

solenoid
should
click

If

it

does
not
click
it

indicates

a
defect

Then
check

each

part
with

the

testing

instruments

See

Figure
AT
I09

0
0

1
M

r

7

I

Y

ATl08

Fig
A
T
l

09

Downshift
solenoid

Note

Watch
for
oil

leakage
from

transmission
case

BODY
ELECTRICAL

heater

unit
on
the
dash

board
and

remove
the

heater
unit

carefully
panel

8
Rernove
two

self

tapping
screws
from
back
of
the

instrument

panel
and
remove
the

defroster
nozzle

7

When

removing
the
heater

control
from
the
instru

ment

panel
remove
the
control

knob
and
loosen
two

screws
used
to
install

the
heater
control
on
the
instrument
9
The
heater
unit
is
installed
in
reverse

sequence
of

removal

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Condition
Probable
cause

Hot
air
does
not

come
out

Motor
does

not

operate
Open
or
short
circuit
of
feed

har

ness

Defective
switch

Defective
motor

Fan
cannot
be

rotated

smoothly
by
hand
Motor

journal
is
out
of
lubricant

or

stick

Hot
air

dose
not
come

out
nevertheless
fan
is

rotating
Slow
rotation

of
fan

Loose
fan

installation

Air

temperature
is
low

Hot

water
does

not
cir

culate
Defective
water

pump

Bent
or

clogged
of

connecting
hose

Defective
hot

water
cock

Air
is

left
in
the
hose

Water

temperature
is
too

low
Defective
thermostat

Water

leakage
from

heater
Defective
water
hose

Loose

clipping
of

water
hose

Improper
soldering
of
heater
core

Defective
defroster
Disconnected
defroster
hose

Bent
or
broken
defroster
hose

BE
35
Corrective
action

Check

and

repair
wiring
harness

Conduct

continuity
test
and

if

required
replace
switch

Replace
motor

Lubricate

journal

Replace
motor

Replace
motor

Repair

Repair
water

pump

Repair
or
clean

piping

Repair

Purge
air

out
of
hose

Replace
thermostat

Replace
water
hose

Retighten
clip

Solder

leaking
position

Correct
connection

Correct
or

replace

Air
intake

system
in

trouble

Overheating

Overcooling

Others

NOISY

ENGINE

Car

knocking

Car
knock
when

coasting
ENGINE

Diny
ur

clogged
fuel
strainer

Fuel

pump
will
not
work

properly

Clogged
carburetor

jets

Clogged
air
cleaner

Air

inhaling
from
manifold

gasket
or
carbu

retor

gasket

Insufficient
coolant

Loosened
fan
belt

Worn
or
defective
fan
belt

Defective
thermostat

Defective
water

pump

Clogged
or

leaky
radiator

Defective
radiator
filler

cap

Air

mixing
into

cooling
system

Improper
grade

engine
oil

Incorrect

ignition
timing

Defective
carburetor

lean
mixture

Defective
thermostat

Low

octane
fuel

Improper
tire

pressure

Dragging
brake

Slipping
clutch

Overloading
to

engine

Carbon

knocking

Timing
knocking

Fuel

knocking

Preignition
misusing
of

spark
plug

Incorrect
throttle

opener
adjustment

Trouble
in
PCV
valve

ET
30
Replace

Repair
or

replace

Disassemble
and
clean

Replace
element

Replace
gasket

Replenish

Adjust

Replace

Replace

Replace

Flush

repair
or

replace

Replace

Retighten
each

part
of

cooling
system

Replace
with

proper
grade
oil

Adjust

Overhaul
carburetor

Replace

Replace
with

specified
octane
fuel

Adjust
to

the
specified

pressure

Adjust

Adjust

Use

right

gear
in

driving

Disassemble
cylinder
head
and
remove

carbon

Adjust
ignition
timing

Use

specified
octane
fuel

Use

specified
spark
plug

Adjust
throttle

opener

Replace
PCV
valve

EMISSION
CONTROL
AND

TUNE
UP

Mechanical

knocking

Crankshaft

bearing

knocking

Connecting
rod

bearing

knocking

Piston
and

cylinder

noise

Piston

pin
noise

Water

pump
noise

Others
Defect
or

malfunction
of

ignition
system

spark
plug
high
tension
cable
breaker

point
ignition
coil
etc

This

strong
dull
noise
increases
when
the

engine
is
accelerated
To
locate

the

place

calise
a
misfire

on
each

cylinder
If
the
noise

stops
by
the

misfire
this

cylinder
generates

the
noise

This
is
a
little

higher
pitched
noise

than
the

crankshaft

knocking
and
also
increases

when
the

engine
is
accelerated
Cause
a

misfire
on
each

cylinder
and
if
the
noise

diminishes
almost

completely
this
crank

shaft

bearing
generates
the

noise

When

you
hear
an

overlapping
metalic
noise

which
increases
its

magnitude
with
the
revo

lution
of
the

engine
and

which
decreases
as

the

engine
is

warmed

up
this
noise
is
caused

by
the

piston
and
cylinder
To
locate
the

place
cause
a
misfire
on
each

cylinder

This
noise
is

heard
at
each

highest
and

lowest
dead

end
of
the

piston
To
locate

the

place
cause
a
misfire
on
each

cylinder

This

noise

may
be

caused

by
the
worn
or

damaged
bearings
or

by
the
uneven

surface

of

sliding
parts

An

improper
adjustment
of
the
valve
clear

ance

Noise

of
the

timing
chain

An

excessive
end

play
on
the
crankshaft

Remarks

Disengage
the
clutch

slightly
and

this

noise
will

stop

Wear
on
the
clutch

pilot
bushing

Remarks
This
noise
will
be
heard
when
the

clutch
is

disengaged

ET
31
Adjust
or

replace
ignition
syste
m

This
is

caused

by
the
wom
or

damaged

bearings
or

unevenly
worn
crankshaft

Renew
the

bearings
and

adjust
o

change
the

crankshaft

Check
the
lubrication

system

Same
as
the

case
of
crankshaft
bear

ings

This

may
cause
an
abnormal

wearing

of
the

cylinder
and
lower

compression

which
in

turn
will

cause
a

lower

output
power
and
excessive

consump

tion
of
oiL

Overhaul
the

engine

This

may
cause
a

wear
on
the

piston

pin
or

piston
pin
hole

Renew
the

piston
and

piston
pin
as

sembly

Replace
the

water

pump
with
a
new

one

Readjust

Adjust
the
tension

of
the
chain

Disassemble
the

engine
and
renew
the

main

bearing
bushing

Renew
the

bushing
and

adjust
the

drive
shaft

ENGINE
MECHANICAL

I

I
J

I

v

Fig
EM
13

Engine
on

engine
stand
DISASSEMBLY

1
Mount

engine
assembly
on

engine
stand

I
Remove
the

engine
mounting
bracket
R
H

2
Install
the

engine
attachment

3
Mount
the

engine
on
the

stand

Engine
stand

ST050
10000

Engine
attachment

ST05270000

2
Remove
the
alternator

and

engine
mounting
bracket

L
H
side

3
Remove
the

crankshaft

pulley

4
Remove

the
oil

pump
together
with

the
oil
ftIter

Fig
EM
14

Oil

pump
removal
5
Remove
the

high
tension
cable
with
the

distributor

cap
on

6
Remove
the

spark
plugs

7
Remove
the

distributor

assembly

8
Remove

the
carburetor

9
Remove

the
rocker
cover

10
Remove

the
thermostat
housing

Fig
EM
15

Thermostat

housing
removal

I
L
Remove

the
manifolds

Fig
EM
16

Manifolds
removal

12
Remove

the
water

pump

EM
5

ENGINE

l
JJ

l

Ii

Fig
EM
t7
Water

pump
r
1

13
Remove
the

fuel

pump

14
Remove
the

rocker
shaft

assembly
and

push
rods

Fig
EM
18

Rocker

shaft
assembly
removal

IS
Remove
the

cylinder
head

assembly

Fig
EM
19

Cylinder
head
bolts
removal

sequence
16
Invert
the

engine

17

Remove
the
oil

pan
and
oil
strainer

Fig
EM
20

Oil
stromer
removal

18
Remove
the

timing
chain
cover
and
the
chain

tensioner

19

Remove
the
crankshaft
and
camshaft

sprockets

together
with
the

timing
chain

Fig
EM
21

Timing
chain
cover
removal

20
Rotate
the

engine
a

quarter
turn
and
remove
the

piston
and

connecting
rod

assembly
Take
off
the
con

necting
rod

bearings
at
the
same
time
and

keep
them
in

order

EM
6

ENGINE
MECHANICAL

20
Install
the

push
rods

21
Install
the
rocker
shaft

assembly
and

tighten
the

rocker
shaft
bracket
bolts
to
the

specified
torque

Tightening
torque

2
0
to
2
5

kg
m
15

to
18

ft
Ib

Note

Tightening

operation
should
be
made

gradually
in

separating
two
or
three

stages
and

outwardly
from

the
center
bracket

Fig
EM
B
RockeT

shaft
installation

22
Install
the

intake
and
exhaust
manifolds

Tightening
torque

0
9

to
I
4

kg
m
6
5
to
10

ft
lb

Fig
EM
B4

Installation

of
intake
and

exhaust

manifolds

23

Adjust
valve
clearance
with

the

specified
di

mensions
Fig
EM
85
Valve
clearance

adjustment

Intake
at
cold

rom
in
0
35
0
0138

Exhaust

at
cold

rom

in
0
35
0
0138

24
Install
the
rocker
cover
and
carburetor

assembly

25

Install
the

water

pump
and
thermostat

Tightening
torque

0

9
to
I
4

kg
m

6
5
to
10
ft
lb

26
Install
the
crankshaft

pulley

Tighten
the

crank

pulley
bolt
to
the

specified

torque

Tightening

torque

15
to
16

kg
m

109
to
116

ft
lb

Tightening
tOI
q
e
15

JP
16

g
m

10l
to
11
ft
Ib

Fig
EM
B6

CTankshaft
pulky
installation

EM
31

Water

pump

knocking

II
Other
mechanical

trouble

Sticked

valve

Seized

valve

seat

Excessively
worn

cylinder
and

piston
ENGINE

MECHANICAL

Improper
shaft
end

play

Broken

impeller

Improper
valve
clearance

Insufficient
clearance
between

valve
stem

and

guide

Weakened
or
broken
valve

spring

Biting
or

damage
ofvalve

stem

Poor
fuel

quality

Improper
valve

clearance

Weakened
valve

spring

Thin

valve
head

edge

Narrow
valve
seat

Overheat

Over

speeding

Sticked

valve

guide

Shortage
of

engine
oil

Dirty

engine
oil

Poor

oil

quality

Overheat

Wrong
assembly
of

piston
with

connecting
rod

Improper
piston
ring
clearance

Dirty
air

cleaner

Too

rich
mixture

Engine
over
run

Slicked
cho
e
valve

Over

choking

EM
39
Replace

Replace

Adjust

Clean
stem
or

ream
the

guide

Replace

Replace
or
clean

Use

good
fuel

Adjust

Replace

Replace
valve

Reface

Repair
or

replace

Drive
under

proper
speed

Repair

Add
or

replace
oil

Check
oil
level

on

daily
basis

Clean
crankcase

replace
oil

and

re

place
oil
fIlter
element

use

right
oil

Repair
or

replace

Repair
or

replace

Adjust

Clean

periodically

Adjust

Drive

correctly

Clean
and

adjust

Start
in

correct

way