1969 DATSUN B110 Service Repair Manual

Brakes

groove
of

pIston
goes
insIde
of
seal
as

shown
in

Figure
117
and
the
seal
will
be

damaged
When
the

piston
is

pushed
ex

cesslvely
mto
the

cylinder
remove
the

brake

assembly
disassemble
It

push
out

the

piston
to
the
arrow
direction
as

shown
in

Figure
117
and
reassemble

Install

pad
and
antt

squeal
shim
assemble

the
anti

squeal

spring
and

retaining
pin
and

ecure
them
with

cltp

Install
the
shim

so
that
the

arrow
mark

pOints
the
rotor
forward

rotating
directIOn

Apply
the
COIl

spring
to
the

retaining
pin

which

IS
distanced
from
the

atr
bleeder

111
PlSton
seal

I
2

I
Normal

position
I

Fig
117
Piston

pushIng
In

posllIon

FIg
118
Arrow
mark
on
shim

78
When
the

pad
IS
Installed

depress
the
brake

pedal
several
tl
mes
so
as
to
settle
down
the

pad
In

the

posltton

CALIPER

Removal

Remove
the
brake

pad

DIsconnect
the
brake
tube
from
the
wheel

cyltnder

Remove
the
strut

assembly
and
knuckle
arm

installatIOn
bolt
so
as
to
ease
removal
of
the

cahper
assembly
installatIOn
bolt

Remove
the

cahper
assembly
installatIOn
bolt

and

separate
It

from
the
strut

assembly

Fig
119
RemOVing
strut
assembly
and
knuckle
arm
in

stallatIon
bolt

Fig
120

RemOVing
caliper
assembly
Installallon
bolt

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

Note
The

piston
seal
affects
not

only

Ieakmg
but
also

piston
return

For
this

reason

replace
the

piston
seal
even
If
the

damage
IS
minor

Rotor

Check
the
rotor

and
If
It

shows
cOl
e
ex

cesslvely
out
of
round
and

so
forth

recon

ditIOnIng
by
machInIng
l
l

requIred
If

any
ab

normal
condItIOns
such

as
crack

dl
ltortlOn

and

excessIve
deflectIOn

replace
the
rotor

Standard
rotor

thlckne
ls

03740
In

Fig
123

MeaSUring
deflectoon
of
diSC

Fig
124

Installing
bias

ring
mto

piston
A

72
LImIt
of
I

econdltlOntng
lotOl
In

thlcknes
l

o
3307
In

DeflectIOn
of
the
rotor

Below
0
0012
In

Reassembly

Apply
the
rubber

grea
le
to

cylinder
bore
and

Install
the

pIston
seal

Insert
the
bIas

rIng
to

pIston
A
so
that
the

roundl
lh

portIon
of
bIas

ring
comes
to
the
bot

tom
of

pIston

A

PISTON
B

PISTON
A

Fig
125
Piston
A
and
B

Fig
126

Installing
boot

Brakes

Note

Be
careful
not
to

confuse
the

piston

A

with
B

Apply
rubber

grease

hghtly
to
the

shdlng
par

tlon
of

p1ston
and
Insert

the

piston
Into
the

cyhnder

Note
When

insertmg
the

piston
be

careful
not
to
insert
too
far

Install

the

boot
and

retaining
nng

Install

so
that
the

yoke
groove
of
bIas

nng
of

piston
A

COinCide
wIth
the

yoke
groove
of

cyhnder

YOKE
SPRING

Fig
127

Installation
of
yoke

spnng
1

Fig
128
InstallatIOn
of

yoke

spnng
2
Install

so
that
the

projected
portIOn
of

yoke

spnng
faces

to
diSC

as
shown
In

Figures
127

and
128

Install
the
bias

spring
to

yoke
so
that
the
bias

spring
comes
to
the

aIr
bleeder

Side
of

cyhn

der

Apply
the

brake

grease
to
the

yoke

shdlng

portIOn
of

cylinder

With
the

yoke

spring
Inserted
to

cylinder

groove

hghtly
correct

poSitIOn
of
the
bias

spnng
so
that
the

groove
of

biaS

spring
COin

Cides
With

yoke

Fig
129

Correctmg
bias

spnng
POSItion

Fig
130

Measunng
startmg
torque

73

Brakes

c

Fig
131
Rear
brake
construction

Assemble
the

cylIndel
body
and

yoke
by
tap

ping
the

yoke
lIghtly

Apply
the
brake

grease

fully
to
the

yoke

slIding
groove
of

cylInder

I
nstall
the
air
bleeder

Reinstallation

Reinstall
the

calIper
assembly
In

reverse

sequence
of
removal

After

the

pad
IS
Installed

completely
bleed

the

hydraulIc
line
and
measure
the
rotatton

torque
of
diSC

Starting
torque

780
In

Ib

At
the
hub
bolt

345

Tightening
torque

CalIper
assembly
installatIOn
bolt

33
3
to
44
1
ft
lb

Brake
tube
flare
nut

connected
to
wheel

cylIn

der

108
to

13
0
ft
lb

REAR
BRAKE

Removal

and

Disassembly

Jack

up
the

rear
slde
of
the
vehicle

support

With

a
stand
and

remove
the
wheel

74
Loosen
the
hand
brake
Wire

remove
the
cleVIS

pin
from
the

rear
wheel

l
ylInder
lever
and

disconnect
the
hand
brake
wIre
Remove
the

return

spnng
pull

spnng

Remove
the
brake
drum
Remove
the
shoe

retainer
and
retUl
n

spnng
and
remove
the

brake
shoe

assembly

DIsconnect
the
brake
tube
from
the
wheel

cylinder

Remove
the
dust

cover

adjusting
shims
and

plates
The
wheel

cylInder
can
then
be

removed

eaSily

Flg
132

RemOVing
hand
brake
vme

Brakes

Return

spnng
dimensIOns

Wire
dla
x
free

length

Load
x

length

actIve
turns

Cylmder

o
0787
x
4
69
III

sIde
33
4lb
x
5
22
m

28

Adjuster

00787
x
2

736
m

sIde
19
6
lb

x
3
020
III

20

1
Brake
moes

2
Shoe
retamer

Fig
133
Rear
drum
brake

Fig
134

Removmg
brake
disc
Remove
the

adjuster
assembly

Remove
the

flange
bolt
from
the
rear
axle

housing
remove
the

rear
axle
shaft
The

brake
disc

can
then
be
removed

together
wIth

the

rear
axle
shaft

Inspection

For
the

rear
brake

inspectIOn
the
instructIOns

for
front
drum
brake

apply

Reassembly
and
Reinstallation

Rea
semble
and
reinstall
the
rear
brake
In

reverse

sequence
of
dl

assembly
and
removal

noting
the

follOWing
matter

Measure
the
wheel

cylinder
shdlng
resistance

With
the
brake
tube
dIsconnected
as

shown
In

Figure
136
and
make
sure
that
the

slIding

resIstance
1
In

range
from
4

409
to

15432
Ib

Note
When

sliding
IS

improper
the
brake

shoe
does
not
return

smoothly

Tighten
the
brake
diSC
installatIOn
bold

flange

bolt
10
8
to
14
5
ft
Ib

T1ghten
the

adjuster
assembly
installatIOn
bolt

116to
159ft
Ib

HAND
BRAKE

Removal

Loosen
the
turn
buckle

adjusting
nut
and

separate
the
front
cable
from
the

rear
cable

CYLINDER
SIDE

306

j
E

i
1
205
58
2
283

J

1192
469

FREE
LENGTH

ADJUSTE
R
51
DE

12
0472

2

11
0433

42
1654

69
5
2
736

UNIT
mm
0

FREE
LENGTH

Fig
135

75

Brakes

Remove
the
lock

plate
located

Immediately
III

front
of
the
turn

buckle
remove
the

clip
III

the

passenger
compartment
SIde
and
discon

nect
the
front
cable

I
Spong
balancer

G
Wheel

cyhnder

FIg
136

Measunng
slidIng
resistance
Remove
the
hand
brake
lever
cover
Remove

the
lever

assembly
wIth
the
front
cable
con

nected
toward
the

passenger
compartment

SIde

Remove
the

hanger
strap
installatIOn
bolt

withdraw
the
lock

plate
from
the
axle

hOUSIng

bracket
umt

and
disconnect
the

rear
cable

Loosen
the

hanger
strap
umt
nut
and

separate
the

parts
Into
nut

hanger
strap

washer
and
bracket
DIsconnect
the
wheel

cylinder
lever
SIde
brake
cable

Note
Do
not

remove
the
dust
cover
from

the
cable
but
leave
it
installed
on
the

cable

Inspection

Check
the
cable
for

damage
and
other
defec

tlve
condlttons
and

replace
If

reqUIred

Replace
If

shdIng
part
IS
worn

excessively

1

Hand
brake
It
ver

2
able

J

Clip

4
Lock

plate
5
Turn
hUlkle
Hand
brake

adJU
h
r

6
CabJc

7
abk
8
Han
er

trap

9
Return

sprmg

10
Cable
shank

II
Hand
brake
lever

lover

FIg
137
Hand
brake

construction

78

Brakes

Make

sure
that
the
hand

brake
lever
can
be

operated

smoothly
and
that
the
ratchet

pawl

and
teeth

are
not
worn

unusually
or

damaged

With
the
hand
brake

lever

pulled
depress
the

push
button
and

make
sure
that
the

pawl

disengages
the
teeth
when

the

push
button
IS

depressed
0
1969
to

0
2362
In

completely

Make

sure
that
the
cable
dust

cover
1S
not

damaged
or

warped

FIg
138
Removing
turn

buckle

I
Front
cabl

2
Cover

CI
H
nd
brok
1

Ye

Fig
139

Removing
hand
brake
lever
Reinstallation

Remstall
the
hand
brake
m

reverse

sequence

of
removal

notmg
the

folloWIng
matters

Be
careful
not
to

damage
or
tW1St
the
dust

cover

TIghten
the

hanger

strap
and
the
cable

con

nectmg
nut
to

5
8
to

7
2

ft
lb

When

adJustmg
rear
brake
shoe
clearance
be

sure
to
loosen
the

mner
cable

sufficIently

Grease
the

shdmg
parts
w1th
multI

purpose

grease
MIL
G
2108
or

G10924l

o
Lock

plate

Fig
140

Disconnecting
rear
cable
from
rear

axle

housing

i

O
j

0

I
J

i

Ii

0

j

0

0

V

I
Dust

cover

Hanger
strap
washer

Bracket
I

Fig
141

Hanger
strap
mounted
on
rear

axle

hOUSing

77