1973 DATSUN B110 brake

r
jWW

5

jJ
S
L
l

J

J

DATSUN
1200

MODEL
8110

SERIES

I
NISSAN

I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
SECTION

BR

BRAKE

BRAKE

SERVICE

DATA
AND

SPECIFICATIONS

TROUBLE

DIAGNOSES
AND

CORRECTIONS
BR
1

BR
23

BR

24
GI

DESCRIPTION

BRAKE

PEDAL

Removal

Inspection

Reinstallation

TANDEM
MASTER

CYLINDER

Removal

Disassembly

Inspection

Reassembly

Reinstallation

SINGLE
MASTER
CYLINDER

Removal
and

disassembly

Inspection

Reassembly
and
reinstallation

BRAKE
LINE

Removal

Inspection

Reinstallation

Brake
line

pressure
differential

warning
light
switch

FRONT
DRUM
BRAKE

cr

I

1
0

I

I

CD
BRAKE

BRAKE

CONTENTS

BR
2

BR
2

BR
2

BR
2

BR
2

BR
3

BR
3

BR
3

BR
3

BR
4

BR
4

BR
4

BR
5

BR
5

BR
5

BR
5

BR
5

BR
6

BR
6

BR
7

BR
8
Removal

and

disassembly

Inspection

Reassembly
and
reinstallation

FRONT

DISC
BRAKE

Brake

pad

Caliper

assembly

Reassembly

Reinstallation

REAR
BRAKE

Removal

and

disassembly

Inspection

Reassembly
and
reinstallation

HAND

8RAKE

Removal

Inspection

Reinstallation

ADJUSTMENT

Brake
shoe
clearance

Brake

pedal

height

Hand
brake

Bleeding
hydraulic
system

@

7

o

i

1

Brake
hose

2
Brake

master
cylinder

3

3
way
connector

4

Hand
brake
lever
5

Brake
hose

6
3

way
connector

7

Hanger
strap

8
Turn

buckle

Fig
BR

l
Brake

system

BR
BR
8

BR
9

BR
9

BR
lO

BR
Il

BR
12

BR
14

BR
16

BR
16

BR
17

BR
17

BR
18

BR
18

BR

19

BR
19

BR
20

BR

20

BR
20

BR
21

BR
21

BR
22

CHASSIS

DESCRIPTION

The
Datsun
1200

series
new
models

adopt
a

hydraulic

brake

Dis
brake
or
two

leading
shoe

type
drum
brake
is

used
for
the
front

wheels
and

leading
trailing
shoe

type

drum
brake
is
used
for
the

rear
wheels

With

adoption
of
the

disc
brake

safety
at

high
speed

range
driving
is
further

improved

For
the

master

cylinder
either

single
type
or
tandem

type
is
used

There
are
two

types
of
tandem

type
master

cylinder
one
is
for
disc

brake
and
the
other
for
drum

brake
Under
the

standard

specifications
h0wever
the

tandem

type
master

cylinder
is

used
for
disc
brake
and

single
type
is
used
for
drum

brake

The
tandem

master

cylinder
provides
a
dual

brake

system
improving
safety

The
hand
brake
is
of

a
mechanical

type
which
brakes

the
rear

wheels

through
the
control
lever

and
steel
wire

The

control
lever
is
located
between
the
driver
and

assistant
seats
and
can
be

operated
easily

BRAKE
PEDAL

The

steering
colunm
bracket

supports
the
brake

pedaL

The
brake

pedal
is
instaUed
on
the

steering
column

bracket
with
a
fulcrum

pin
The
brake

pedal
arm
and

brake
master
cylinder

push
rod
are

joined
with
a

clevis

pin
The

stop
lamp
switch

opposes
the
brake

pedal
arm

bracket
and

operates
as

the

pedal
arm
moves

t

2

3
Stop
lamp
switch

Brake

pedal
stopper

Brake

pedal
arm
4
Clevis

pin

5
Push
rod

6
Fulcrum

pin

Fig
BR
2
Brake

pedal
installation
Removal

Unhook
the
rerum

spring

Remove
the

spring
pin
from
the
clevis

pin
which
is

used
to
connect
the
master

cylinder
push
rod
to

the
brake

pedal
arm
remove
the

clevis

pin
and

separate
the

push

rod
from
the

pedal
arm

3
Remove
the

fulcrum

pin
which
is
used

to
connect
the

pedal
arm
to
the

bracket
and

separate
the

pedal
arm
from

the
bracket

@

mm
l6
qf

@

@

t

Spring
pin
5
Nut
9
Return

spring

2

Clevis

pin
6

Spring
washer
10
Brake

pedal
arm

3
Washer
7
Nut
It
Brake

master

4

Spring
lasher
8

Fulcrum
shaft

cylinder

Fig
BR
3
Brake

pedal
components

tandem

type
master

cylinder

Inspection

1

Check
sliding
parts
for
wear
and
the

return

spring
for

weakness

2
Check
the
brake

pedal
for
bending

warping
and

crack

3

Check
other

parts
for
serviceabilities

Reinstallation

Reinstall
the
brake

pedal
in
reverse

sequence
of

removal

noting
the
following
matters

1
Grease

sliding

parts
and
retum

spring
hook
with

multipurpose
grease
MIL

G
2108
or
G
10924

2

Tighten
the
fulcrum

pin
installation
nut
to
2

1
to

2
9

kg
m

15
2
to
21
0
ft
lb

BR
2

BRAKE

TANDEM
MASTER
CYLINDER

The

tandem
master

cylinder
allows
either
front
or
rear

brake

displaying
sufficient

braking
effect

although
a

trouble
occurs
in
one
side
of
either

front
or

rear
brake

improving
driving
safety
The

tandem

type
master

cylinder
is
manufactured

by

NABCO
or
TOKlCO
When

disassembling
and

reassem

bling
be

careful
not
to
mix
the
individual
manufacturer
s

parts

t

I

Fig
BR
4
Cross
sectional

view

of
tandem

type

master

cylinder

Removal

L
Remove
the

clevis

pin
and

separale
the

brake

pedal

from
the
master

cylinder
push
rod

2
Disconnect
the
brake
tube
from
the

master
cylinder

3
Remove
the
master

cylinder
installation
bolt

remove

the

master

cylinder
shim

and
remove
the
master

cylinder

assembly
from
the

body

Disassembly

L

Drain
brake

fluid
and

remove
the

stopper
bolt

2

Remove
the
dust
cover

remove
the

snap
ring
and

stopper
ring
and
remove
the

push
rod

assembly

3

Take
out
the

piston
mechanism

components
in

order

of
the

primary
piston
assembly

secondary
piston
assem
bly
and

piston
spring

4
Remove
the
valve

cap
and

remove
the
valve
as

sembly

Note
Disassemble
the
master

cylinder
carefully
so
that

the

sliding
surface
of
the

piston
and

piston

cup
are

not

damaged
Do
not

remove
the
fluid
reservoir

unless

really
necessary
Moreover
do

not
remove

the

piston
cup
unless
the

piston
is

replaced

Inspection

Thoroughly
clean
all

disassembled

parts
check
for

wear

damage
and
other
defective

conditions
and

replace

if

necessary

Note
Do
not
clean
rubber

parts
with
mineral
oil
since

they
are
deteriorated
Use
brake

fluid
or
alcohol

When
aloohol
is
used
however
do

not
immerse

BR
3

CHASSIS

Ii

t

L

1

J

rJ
I

e

i
L
rubber

parts
und
alcohol

long
than
30
seconds

After
the

parts
are
cleaned

dry
them
with
com

pressed
air

Check
the

cylinder
and

piston
for

damage
and

uneven
wear
on
the

sliding
surface
and
for

other
defective

conditions

Replace
as

required

2

Replace
if
the

cylinder
and

piston
clearance
is

more

than
0
15

mm
0

006
in

3
In

principle
replace
the

piston
cup
packing
and

valves

with
new
ones
whenever

the
master

cylinder
is

disassembled
Be

sure
to

replace
if

damaged
worn

weakened

or

expanded

4
Check

the
return

springs
for
wear

damage
and
other

defective
conditions
and

replace
as

required

5

Replace
others
if

deformed

damaged
or
defective

Reassembly

Assemble
the
master

cylinder
in

reverse

sequence
of

SINGLE
MASTER
CYLINDER

s
m

e
disassembly
noting
the

following
matters

Apply
brake

fluid
to
the

component
parts
such
as

cylinder
bore

piston
etc
and

carry
out

the

operations

carefully
so
that

the

component
parts
are
not

damaged
or

no
dust
and
other

foreign
matters
enter
the

cylinder
and

brake
fluid
reselVoir

Moreover
for
rubber

parts
such
as

piston
cup
etc

apply
rubber

grease
slightly

Tightening
torque

Valve

cap

2
5

to
3
5

kg
m

I8
to
25
3

ft
Ib

Bleeder
screw

0
5

kg
m
3
6
ft
lb

Stopper
bolt

0
5
to
0
3

kg
m
l
I
to
2

2ft
lb

Reinstallation

Reinstall
the

master

cylinder
in

reverse

sequence
of

removal
After
air

bleeding
make

sure
that

no
brake
fluid

leaks
from
the
circuit
For
the

pedal
height
adjustment

refer
to
lhe

paragraph
pedal
adjustment

r
11L

y

Fig
BR
5
Cross

sectional
view

of
single
master

cylinder

BR
4

Removal
and

disassembly

The

single
master

cylinder
is
removed

and
disassembled

in
the
same

manner
as
the
tandem

type
master

cylinder

Inspection

Refer
to
the
section

covering
Inspection
of
tandem

type
master

cylinder

Reassembly
and
reinstallation

The

single
master

cylinder
is
reassembled
and

re
BRAKE

installed
in
the
same

manner
as
the

tandem

type
master

cylinder

BRAKE
LINE

The
bl1lke

pipe
adopts
a

double
wall
construction

steel

tubing
and
with
this
construction
lhe

rigidily
has
been

improved
Moreover
the

portion
of
brake
line
laid

beneath
the
vehicle

floor
is

galvanized
improving
the

corrosion
resistance

1

Bridge
tube
9
Brake
hose

2

Brake
tube
10

Bridge
tube

3
Brake
hose
11
Brake
tube

4
Brake
tube
12
Brake
hose

5
Brake
tube
13

Brake
tube

10
6
3

way
connector
14

3

way
connector

7
Brake
tube

15
Brake
tu
be

8
Brake
hose

Fig
BR
6
Brake

line

Removal

1
Remove

flare
nuts

from
both

ends
of
the
brake
tube

steel

tube
and
remove

clips
used
to
secure
the
brake

tube

on
the

paneL
The

brake
tube

can
be
removed

easily

I
1

I
Brake

master

cylinder

I
2

Front
3

way
connector

Fig
BR
7
Brake
tubes
around
master

cylinder

BR
5

CHASSIS

1

I
Front
3

way
connector

I
2

I
Brake

master

cylinder

I

Fig
BR
8
Front
3

way
connector

2
The
brake

hose
rubber
hose
is

used

at
the
front

strut

assembly
unit
and

fear
axle

housing
unit
Remove

the

flare
nut
from
the

brake
tube
and

remove
the
hose

I
r

I

I

l
j

u
l

I

J

II

V

r
1

0

l
I

l

I

I
Brake
hose

I
3

I
Rear
axle

hOUSing

2
Rear
3

way
connector

Fig
BR

9
Brake
hose
and
3

way
connector
around

rear
ax
Ie
housi

g

1
1
Brake
hose

I
2

I
Strut

assembly

Fig
BR
J
0
Brake
hose

around

front
strut

assembly
Inspection

L

Thoroughly
clean
the
brake
tube

and
brake
hose
and

check
them
for

collapsing
crack
scar
and
rust
brake

tube
and
for
weakness

expansion
wear
etc
brake

hose

Replace
if
defective

2
Remove

mud
and
dust

from
the

brake
tube

clip
unit

and
check
the

clip
If
the

clip
covering
vinyl
coating
is

torn

repair

Reinstallation

1
Provide

a
sufficient

space
between
the
brake
lines

and
other

parts
so
that
the
brake
lines

are
not
interfered

with
other

parts
due
to
vibration

during
driving

SHORT
NAIL

DOUBLECLI
S

t

LONG
NAI
L

BRAKE
TUBE

PANEL

CLIP

COATED

WITH

VINYL
BRAKE

TUBE

Fig
BR
l1
Brake

tube
installation

clip

2
When
the
brake
hose

is
disconnected
from
the
3

way

connector
on
the
rear
axle

housing
once
be
sure
to

replace
the

copper
packing
with
a
new
one

3
Be
careful
not
to

warp
or

twist
the
brake
hose
and

particularly
be
careful
not
to

interfere
the
brake
hose
with

tires

and

suspension
components

4

Do
not

tighten
the
brake
line
installation
flare
nut

forcedly
or

excessively

BR
6

Tightening
torque

3

way
connector
1
5

to
1
8

kg
m

10
8
to
13
0
ft
lh

1
5
to
1
8

kg
m

10

8
to
13

0
ft

lh

1
5
to
1
8

kg
m

10

8
to
13

0
ft

lb

0

7
to
0
9

kg
m

5
1
to
6
5

ft
1b
Master

cylinder

Brake
hose

Air
bleeder

5

Fill
the

master

cylinder
brake

fluid
reservoir
with

brake
fluid
and

perform
air

bleeding
complele1y

Note
a
Do
not
use

brake
fluid
other
than

specified

b
The

specified
brake
fluid
is
used
for

both

single

and
tandem

type
master

cylinders

6

Upon

completion
of
air

bleeding
make

sure
that
the

brake

operates
correctly
and
check
the
brake
tube
and

hose
connectors
for
fluid

leaking
Fully
depress
the

brake

pedal
continue
to

depress
the
brake

pedal
for
several

seconds
and
make
sure
that
no
brake

fluid
leaks
from

any

part
of
the
brake
line

Replace
defective

part
if

required

Brake
line

pressure
differential

warning

light
switch

A

warning
light
is

located
on
the
instrument

panel
to

warn
the
driver
when

a

pressure
difference
of
13

to
17

kg
cm2
185
to

2421bJsq
in
exists
between
the

front
and

rear
b
rake

systems

A

hydraulically
actuated

warning
light
switch

is
located

in

the

engine
compartment
Both
front
and
rear
brake

systems
are
connected
to
this
switch
assembly

When

a

pressure
difference
of
13

to
17

kgJcm2
185
to

242

lbJsq
in
occurs
between
the
front
and
rear

brake

systems
the
valves

will
shuttle
toward
the
side
with
the

low

pressure
The
valve
contacts
with
the
switch
terminal
BRAKE

the

ground
circuit

for
the

warning
light
is

completed
and

thus
the

warning
light
lights

In
this

case
correct
the

hydraulic
brake

problem
and

bleed
the
brakes

Check
the

warning
light
switch

assembly
for
a

proper

operation
Check
the
switch

assembly
for
fluid

leakage

Note
Do

not

attempt
to

repair
switch
for

any
reason

replace
switch

assembly
completely

1
To
front
brake

L
H

2

From
master

cylinder
F

3
From
master

cylinder
R
4
To
rear
brake
L
B
R
M

5
To
front
brake
R
H

Fig
BR
12

Warning
light
switch

r

I

@

I
I
3

I
Valve

assembly

4

Piston
load

spring
Wire
terminal

Brake
tube

Fig
BR
13
Sectional

view

of

warning
light
switch

BR
7