1969 DATSUN B110 brake fluid

r
Brakes

Moreover
In
order
to

prevent
brake

squeahng
a
shIm

IS
Inserted
behind
the

pad

BRAKE
PAD

Replacement

Jack

up
front
UnIt
of
the
vehicle
and
remove

the
front
wheel

Remove

clip
from
the

retaining
pin
and

sup

porting
the
brake

pad
remove
the

retaining

pin
and
COil

spring

Unhook
the

hanger
spring
and
Withdraw
the

brake

pad
and
shim
With
a

pair
of

phers

Note
When
the
brake

pad
IS
removed
do

not

depress
the
brake

pedal
or
otherWise

the

piston
will
come
out

Inspection

Clearance
between
the
brake

pad
and
rotor
IS

adjusted
automatically
Check
the
brake

pad

Fig
115

WIthdraWing
brake

pad
and
shIm
for

wear
after
the
first
6
000
miles

driVing

and

every
3
000
miles
thereafter

Clean
the
brake

pad
With
carbon

tetrachloride

or

gasohne

When
011
and
or

grease
IS

heavIly
stlcked
on

the

pad
or
when
deteriorated
or
deformed
due

to

overheating
replace
the

pad
With
a
new

one

When
thickness
of
the
friction
material

pad

IS
less
than
0
0630
In

replace
Replace
when

total

pad
thIckness
IS
less
than

0
2402
In

Note

Replace
pads
as
a
set

Replacement

at

only
one

position
may
cause
uneven

brake
effect
It

IS
recommended
that

rotation
of

pads
be
made

periodically

Check
the
rotor

Reinstallation

Clean
the

calipers
and

piston
pad
installing

parts

Note
Do
not

use
mineral
oil
Be
careful

not
to

apply
oil

on
the
rotor

Depress
the

pIston
Into
the

cyhnder
so
that

new

pad
can
be
Installed

Note
a
Note
that
brake
fluid

may
over

flow
from
the
reservoir
It
is
recommen

ded
that

operation
be
carried
out

by

loosening
the
breather
to
release
brake

fluid

b
The

piston
can
be

easily
pushed
in

by

hand
But
if

pushed
excessively
the

Fig
116

DepreSSion
piston
A
and
B
Into

cylinder

88

Brakes

DIsassembly

Remove
mud
and
other
contamInations
from

the

caLiper
as

embly
before
dlsa

sembly

DraIn
bl
ake
fluId

flOm
the
wheel

cylinder

Loosen
the

aIr
bleeder
and

depres
the

pistons
A
and
B
Into
the

cylInder
See

FIg

125

Secure

the

yoke
In
a
vIse
and

tap
the

yoke

head

with
a
hammer
The

cylinder
body
can

then
be

removed
from
the

yoke
When

remOVIng
the

cylinder
body
be
careful
not
to

allow

the

piston
A

comIng
out
from
the

cylIn

der

FIg
121

TapPing
yoke
head

5

I

B

Q
Retamlng
nng

J
Boot

Fig
122

Cylinder

body
and

piston
Remove
the

bIas

nng
from
the

piston
A

Remove
the

retaInIng
nngs
and
boots
from

the

pistons
A

and
B

Depress
and

remove
the

piston
from

the

cylin

der

Remove
the

piston
seal
from

the

cylinder

Note
Remove
the

p1ston
seal

carefully

w1th

fmgers
so
that
the

cylinder
wall
is

not

damaged

Remove

the

yoke
prIng
and

yoke
bias

sprIng

from
the

yoke

Inspection
and

Repair

Thoroughly
clean
all
dIsassembled

parts
and

check
them
for
the

follOWIng
Items

Note
When

cleaning
rubber

parts
use

alcohol
or
brake
fluid
If
rubber

parts
are

cleaned
wIth

mmeral
Oil

they
will
be

detenorated

Calzpers

If
the

cylInder
wall
IS

damaged
or
worn

replace
If
the

cylinder
wall
IS
rusted

or

foreIgn
matters

are
accumulated
on
the

cylIn

der
wall

carefully

polIsh
wIth
fine

emery

paper
so
that

the

cylInder
wall
IS
not

damaged
If

rusted
or

roughened
excessively

replace

Pad

See

paragraph
covenng

replacement
of

pad

PIston

Replace
If

unevenly
worn

damaged
and

or

rusted

Note

The

piston
slidmg
surface
is

plated

Thus

do
not

use

emery
paper
although

rusted
or

foreign
matters
are
sttcked

on

the

sliding
surface

Seals

Prlmanly
replace
both

pIston
and
dust
seals

whenever

overhauling

n

Brakes

Adjusting
shIm
thickness
for
selectIOn

o

0197
In

00315
In

o

0630
In

Note
When

adjusting
be
sure
to
use
ad

Jusbng
sh1ms

having
same
th1ckness
for

upper
and
lower

brake
master

cylinder

IOstallahon
bolts

Upon

completIOn
of

adjusting
shIm

adjust

ment

tighten
the

stopper
down
to
such

an
ex

tent
that

heIght
of
the

pedal
head
IS

5
57

pO
0787

In
and

tighten
the
lock
nut

becurely

Free
travel
of

the
brake

pedal
IS
0
197
to

0591
tn
and
the

stroke
IS
4

72
In

Hand

Brake

Turn

the

turn
buckle

properly
and

adjust

hand

brake
lever

operatmg
stroke

correctly
so

that

operatmg
stroke
IS
3

091
m

16
notches
at

operatIng
force

of
243
to
331
Ib

Upon
com

pletIOn
of

adjustment
be
sure

to

tIghten
the

lock
nut

Upon

completIOn
of
the

adjustment
release

the
hand

brake
lever
and
make

sure
that
the

rear
wheels

are
not

braked

Normal
btroke

3091
In
6

notches

Fig
144

AdJusting
turn
buckle
LImIted
stroke

535
tn
10
notches

The
term
Stroke

means

heIght
from
the

standard

posItIon
8
7
In
above

the
hand
brake

lever
fulcrum

Note

Readjust
hand
brake

stroke
when
it

reaches

the
hmited
stroke
5

35
in

10

notches

BLEEDING

HYDRAULIC

SYSTEM

BleedIng
the

hydrauhc
brake

system
deserves

much
attentIOn

as
It

IS
an
e
senttal
factor
for

regular
servICe
brake

operatIon

As
a
matter

of
fact

durmg
the
brake

serVice

air
IS

lIkely
to

creep
Into
the
CirCUIt

WIth
the

result
that
the
flUId
actIon

IS
altered

and
the

brake

pedal
becomes

spongy
at
the

travel
end

Bleedmg
should
be
carned
out
at
first

WIth

the
master

cylmder
then
from
the

longest

lIne
from
the
master

cylmder
and
then
fimsh

up
With
the
shortest

Note

Always
clear

away
any
dirt
around

master

cylinder
reservoir

cover
before

removing
cover
for

any
reason
Never

depress
pedal
while

brake
drums

are

removed
unless
bleeder

valve
IS

open

Top
up
the

reservOIr
master

cyltnder
With

flUId
of
the

recommended

type

Fig
145

Connecting
Vinyl
hose

to
air
bleeder
rear

79

Brakes

Thoroughly
Wipe
the
bleeder

screw
and
from

any
mud

or
dust

present
so
that
the
outlet

hole

IS
free
from

foreign
matter

Attach
a

VInyl
hose
to
the
wheel

cyhnder

bleeder

screw

Dip
the
end
of
the

VInyl
hose
In

a

Jar
contaInIng
some
brake
flUId

Depress
the
brake

pedal
two
to
three
times

and

keep
the

pedal
fully
depressed

With
the
brake

pedal
fully
depressed
loosen

the
bleeder
screw
exhaust

air
and

rettghten

the
bleeder
screw

qUIckly

Return
the
brake

pedal
slowly

Repeat
the

operatIons
above

Air
WIll
no

longer
come
out
from
the
bleeder

screw
but

brake
flUId

comes
out
When
atr

stIll
eXists
In

brake
flUId
It

appears
whIte
due
to

aIr
bub

ble
Conduct
aIr

bleedIng
on
other
wheel

cyhnders

In
the

same
manner

Note
a
Check
the
reservoir
for
fluid
level

during
bleeding
operation

b
FlUid
withdrawn
in
the

operation
should
not
be
used

refilling
bleeding

again
for

c
When
the
master

cylinder
is
dIsassem

bled

or

replaced
conduct
air

bleeding
on

the
wheel

cylinder
which
is
located
most

near
the
master

cyhnder

d

Ordinarily
air

bleeding
is

performed
in

the

following
sequence

Rear
left
Rear

right
Front
left
Front

right

e
Do
not
return

the
brake

pedal
before

retightening
the
bleeder
screw

TROUBLE
SHOOTING

Condition
Probable
cause

Corretttve
dellon

Spongy
pedal
Au
In
brake
lines
Bleed

Ihoroughly

Swollen
hose
due
to
detenoratlOn
or
use
of

Replace
ho
e
md
bleed
the

system

poor
qualIty
brake
flUid

Use
of
a

brake
flu
d
wIth

a

bOilIng
pomt

Change
wIth
the

spectlied
brake

flUId
dnd

which
15
too

low
bleed

system

ReservOir

filler

cap
vent
hole

clogged
Tins
Clean

reserVOIr
filler

cap
and
bleed
the

promotes
a
Vdcuum
In
master

cylinder
that

system

suckS
In
air

through
rear
seal

Pedal

Yields
under
Detenorated
check
valve
Fit
a
new

check
valve
and
bleed
the

system

shght
pressure

ExterIlalleaks
Check
master

cyhnder
plpmg
and
wheel

cylInder
for
leaks

and
make

necessary
re

pairs

Master

cyhnder
leaks

through

pnmary
cap
Overhaul
master

cyhnder

80

Brakes

Excessive

pedal

travel

All
b
rakes

drag

One
brake
drdgs

Unbalanced
brdkes

Excessive

pedal

pressure
required

poor
brak
es

Brake
chatter

squeak
or

squeal
System
hds
not
been
bled

Improperly
adjusted
clearance

FlUid
level
In

master

cylinder
IS
too
low

Thermal

expansIOn
of
drums
due
to

Qver

hea

lmg

lnsuffiuent
shoe
to
drum
clearance

Weak
shoe
return

springs

Brake
shoe
return
no

free
travel

Seized
master

cylinder
piston

Loose
or

damaged
wheel

bedfmgs

Weak
broken
or
unhooked
brake
shoe

return

spnngs

InsuffiCient
clearance
between
brake
shoe

and
drum

Grease
or
011
on

hnmgs

Seized

piston
In
wheel

cylInder

Tires

Improperly
mtl
lted

Loose
wheel

bearing

Front

suspension
faulty

Grease
mud
or
w
tter
on

Lmmgs

Full
area
of

Immgs
not

Lontaclmg
drums

SLOTed
brake
drums

Dust
on
drums
or
oIl

soLled

Immgs

Weak

shoe
return

springs

Drum
out
of
round

Worn

Itmngs
Bleed
the

system

Adjust
shoe
to
drum
clearance

Full

up
wIth

specIfied
brake
flUId

Bleed
the

system
If

requIred

Allow
drums
to

cool
off
Check
brake
shoe

lImngs
and
drums

Replace
damaged
parts

Adjust
cledrance

Replace
the

spnngs

Adjust
pedal
height

SerVJce
the
master

cyhnder

repla
e
the

pISton
and
bleed
the

syslem

Adjust
Of

replace
wheel

beanngs

Replace
spnng

Adjust
brakes

Clean
brake
mechamsm

repldce
hnmg
and

correct
cause
of

grease
or
011

getllng
on

Lmmg

SerVIce
the
wheel

cyhnder
and
bleed
the

system

Inflate
tires
to
correct

pressure

Adjust
wheel
bearing

Thoroughly
check
and

adlust
all

front
sus

pensIOn
components

Remove
drums
Clean
and

dry
hrongs
or

replace

Replace
shoes

Reface
drums
and
mstall
new

IImngs

Remove

and
clean
drums

thoroughly

ElImmale

oIl
leak

Check

spnngs
and

replace
as

required

Turn
drums
on
lathe

Replace
hrungs

II

Clutch

Pedal
lever
bush

Fulcrum

pedal
pIn
etc

Remstallation

Reinstall
the
clutch

pedal
In

reverse

sequence

of
removal

Adjustment

Adjust
pedal
pad
heIght
to

565
In
Without

stopper
The

adjustment
IS
made

by
selectmg

and

applYIng
shlm
s

haVing
adequate

thIckness

Be
Ule
to

use
shIms

haVIng
same
thIckness

for
both

upper
and
lower

Next

adjust
the

pedal
stopper
properly
so
that

the

pedal
pad
height
IS
557
In
and

secure
the

pOSitIOn
WIth
lock
nut

Note
Make

sure
that
chaSSIS

grease
has

been

applied
to
the
CG
marked

portions

two

places
Grease
if

reqUired

CLUTCH
MASTER
CYLINDER

Removal

DIsconnect
the

push
rod
from
the
cleVIS

DIsconnect
the
clutch
lIne
from

the
master

cylinder
and
draIn
flUid

Remove
the

ecunng
bolts
and
remove
the

master

cyhnder
assembly
from
the
vehIcle

DIsassembly

Remove
the
filler

cap
and
draIn
flUId

Pull
back
the
dust
cover

and
remove
the

snap

rIng
The

stopper
push
rod

pIston
assembly

pnmary
cup
and
return

sptlng
assembly
can

be
removed

Inspection

Thoroughly
clean
all

parts
With
brake
flUId

before

InspectIOn

Check
the

cyhnder
and

piston
for
uneven

wear

or

damage
Replace
If

required

When
clearance
between
the

cylinder
and

pIston
IS
more
than
O
0059
In

replace
the

cyhnder

102
Replace
the

pIston
cup
pnmanly
whenever

the
master

cyhnder
IS
dIsassembled
It
must

also
be

replaced
when

wear
or
deformatIOn

due
to

fatIgue
or

damage
IS
found

Check
the
dust

cover
OIl
reservOIr
filler

cap

and
clutch
lIne
for

damage
or
deformatIOn
If

abnormal
condItIOn
IS
found

replace
With
new

one

Reassembly

Reassemble
the
master

cylInder
assembly
In

reverse
sequence
of

dIsassembly
notIng
the

follOWIng
matters

The

pIston
cup
should
be
soaked
In
brake
flUId

before

reassembly
Install
the

pIston
cup

carefully
so
that
It
IS

correctly
faced

Apply
brake
flUId

suffiCIently
to
the

cyhnder

and

pIston
and
assemble
them

Reinstallation

ReInstall
the
master

cyhnder
assembly
In

reverse

sequence
of
removal
and

adjust
as

follows

Adjust
the

pedal
heIght
by
changmg
the

push

rod

length

Bleed
air
out
of
the

hydrauhc
system

BLEEDING
CLUTCH
SYSTEM

Remove
the
bleed
screw
dust

cap
from
the

operatIng
cyhnder

Open
the
bleed
screw

approximately

three

quarters
of
a
turn
Attach

a
tube

Immer

SIng
the

open
end
mto

a
clean
contaIner
which

contaInS
a
small
amount
of
brake
flUId

Fill
the
master

cyhnder
reservOIr
With
the

recommended
flUId

Depress
the
clutch

pedal
qUIckly
while

keepIng
It
down

retighten
the
bleed

screw

and
allow
It
to
return

slowly
Repeat
thiS

pumpIng
actIOn
unttl
the
flUId

entenng
the

contaIner

IS
free
from
air
bubbles

Screw

up
the
bleed
screw
on
a
down
stroke
of

the

pedal
remove
the

bleec
t1
1
nd

rel1lace

the
dust

cap

Transmission

AUTOMATIC
TRANSMISSION

The
model
3N71B

automatic
transmiSSIOn
IS

a

fully
automatic
Unit

consisting

pnmanly
of

3
element

hydrauhc
torque
converter
and
two

planetary
gear
sets
Two

multiple
disc
clut

ches
a

multiple
disc

brake
a
band

brake
and

a
one

way

sprag
clutch

provide
the
fnctlon

elements

reqUired
to
obtain
the
deSired

fun

tlon
of

the
two

planetary
gear
sets

The
two

planetary
gear
sets

give
three
for

ward

ratIOs
and
one
reverse

Changing
of
the

gear
ratIOs
IS

fully
automatic

In
relation
to

vehicle

speed
and

engine
torque
Input

Vehicle

speed
and

engine
mamfold

vacuum

Signals
are

constantly
fed
to
the
transmiSSIOn

to

prOVide
the

proper

gear
ratIO

for
maximum

effiCiency
and

performance
at
all
throttle

openmgs

The
Model

3N71B
has
SIX
selector

poSitIOns

P
R
N

D
2
1

p
Park

pOSitIOn

posItively
locks
the
out

put
shaft
to

the
transmiSSIOn

case

by
means
of

a

lockmg

pawl
to

prevent
the
vehicle
from

rollmg
either

directIOn

ThiS

pOSitIOn
should
be
selected
whenever
the

dnver

leaves
the
vehicle

The

engme
may
be
started
m
Park

pOSition

R
Reverse

range
enables

the
vehicle

to

be

operated
m
a
reverse
direction

N
Neutral

pOSitIOn
enables
the

engine
to

be
started
and

run
Without

dnvIngthe
vehicle

0
Drive

range
IS
used

for
all
normal

driVing
conditions
Dnve

range
has
three

gear

ratios
from
the

startmg
ratIO
to
direct
dnve

2
2

range
prOVides
performance
for

dnvIng
onshppery
surfaces

2

range
can
also

be

used
for

engine

brakmg

2

range
can

be
selected
at

any
vehicle

speed

and

prevents
the
transmlsslOn

from

shifting

out
of
second

gear

108
Rg
162
Idenllflcatlon

number

I
1

range
can
be

selected
at

any
vehicle

speed
and
the
transmiSSIOn
will
shift
to
second

gear
and

remain
m
second
until
vehicle

speed

IS
reduced
to

approximately
25
to
31
MPH

1

range
posItion
prevents
the
transmiSSIOn

from

shlftmg
out

of
low

gear
ThiS

IS

par

tlcularly
benefiCial
for

mamtamIng
maximum

engine
brakmg
when

continUOUS
low

gear

operation
IS
deSirable

The

torque
converter

assembly
IS

of
welded

constructIOn
and
can
not
be
dlssassembled
for

service

FlUld
Recommendatwn

Use
automatic
transmiSSIOn
flUid

haVing

DEXRON
IdentificatIOns

only
m
the
3N71B

automatic
transmiSSIOn

denttficatwn
Number

Stamped

posttwn

The

plate
attached
to
the

rIght
hand
Side
of

transmission
case
as
shown
m

Figure
161

denttficatwn
of
number

arrangements

See

Page
109

RECOMMENDATIONS

Due
to
the

compleXity
of

setting
up
a

disassembled
transmissIOn
as
well

as
the

special
tools

necessary
It

IS
recommended

thaL
nternal

epalrs
be
left
to

a

fully

eqUip

ped
shop

Specifications

RECOMMENDED
LUBRICANT
SPECI
f
ICATIONS

Item
SpeCificatiOnS
Remarks

SAE
ClaSSIfIcatIon
Furthermore
refer
to

GasolIne

engme
011

SD
or
SE
SAE
recommended

VISCOSity

table
See

Page
GI
5

Transmission

and
API
GL4

0

steenng

l

Dlfferenllal
I

API
GLS

Automallc

TIM
flUId

Type
DEXRON

MultIpurpose
grease
NLGI2
LIthIUm

soap
base

Brake
and

clutch
flUId
OOT3

Antifreeze
coolant
Long
LIfe
Coolant

130