1968 DATSUN 510 brake pads

16

CHAPTER

TIlREE

sary
Also
check
all

parts
for

mlSaltgnment
and

uneven
wear

TRANSMISSION

1

Difficult
to
mesh

gears

Make
certam
the

clutch

pressure
plate
and
re

lease

beanng
are
m

good
condItion
The
trouble

can
be

caused

by
worn

gears
shaft
and
or
bear

mgs
DISassemble
and

repaIr
as

requIred
Also

can
be
caused

by
msufficlent

operatmg
stroke

due

to
worn
or
loose

sltdmg
parts
or
a
defective

synchronIZer
DIsassemble

carefully

InSpect
and

replace
as

requIred

2
Gears

slip
out

of
mesh

Generally
thIS
trouble
occurs
when

the
mterlock

plunger
check
ball
and

or

spnng
IS
weakened

or
worn
The
trouble
can

also
be
caused

by
worn

fork
rod
ball

groove

damaged

bearings
or
dam

aged

gears
DIsassemble

carefully
mspect
and

replace
as

required

3
NOIse

If
nOISes
are
heard

wIth
the

engme
idlmg
and
the

clutch

disengaged
the
nOIse
IS

probably

conung

from
the

transmISSIOn
Several
Items

can
cause

nOISes

either

smgly
or
m
combmatIon

Check
the

qualIty
and

quantity
of
lubrIcant

in
the
trans

mISSIon

Replace
or

replenISh
as

necessary
Worn

bearIngs
wIll

usually
produce
a

lugh
humming
at

hIgh
speed
and

a

cycltc
knockIng
sound
at
low

speed
Worn

or

damaged
splInes
and

bushmgs

will
also
cause

nOIse

BRAKES

1
Brake

pedal

goes
to

floor

There

are
numerous
causes
for
thIS

includIng

excessIvely
worn

Itnmgs
aIr
in
the

hydraultc

sys

tem

leaky
brake
lmes

leaky
wheel

cylmders
or

leaky
or
worn

master

cylmder
Check
for
leaks

and
thIn
brake

linmgs
Bleed
and

adjust
the

brakes
If

thIS
doesn
t
cure
the
trouble

rebwld

wheel

cylmders
a
nd
or
master

cylmder

2

Spongy

pedal

Normally
caused

by
aIr
m
the

system
blee
d
and

adjust
the
brakes

3

Brakes

pull

Check

brake

adjustment
Also
check
for
contam
inated

brake

Itmngs
from
leaks

leaky
wheel

cyltnders
loose

caltpers
frozen

or
seIZed

pIstons

and
restrIcted
brake
lmes

or
hoses
In
addItion

check
front
end

alignment
and

suspensIOn
dam

age
such
as
broken
front

or
rear

sprmgs
shocks

etc
Check
condItIon

of
tIres

4
Brakes

squeal
or
chatter

Check
brake

lmmg
thickness

and
brake
drum

roundness
Ensure

that
the
shoes
have
cham

ferred
ends

and
are
not
loose

Inspect
the
condI

tion
of

the
rotors
on
the
front
wheel
dISC

brakes

to
make

certain

they
are
not
scored

or

damaged

Clean

away
all
dIrt
on
shoes

pads
rotors

or

drums

5

Draggmg
brakes

Check

brake

adjustment
includmg
handbrake

Check
for
broken
or

weak
shoe
return

springs

swollen
rubber

parts
due
to

unproper
brake
flUId

or
other
contammatIon

Clean
or

replace
de

fectIve

parts

6
Hard

pedal

Check
brake

linmgs
for

contammation
Also

check
for

restrIcted
brake
lines

and
hoses

7

High
speed
fade

Check

for
dIstorted
or
out
of
round
drums

and

contamInated
brake

lmmgs
Make

certam
the

recommended
brake
flUId
IS

used
Dram
entIre

system
and
refill
If
In
doubt

8

Pulsatmg
pedal

Check
for
dIStorted
or
out
of
round
drums

or

rotors
Check
for

excessIVe
brake

dISC
run
out

STEERING
AND

SUSPENSION

NOTE
Unusual

steermg
pullmg
or

wandermg
IS

usually
caused

by
bent

or
otherwise

mIsaligned

suspenszon

parts
Because

of
the

speCialized
equIp

ment

reqUired
to
evaluate
and

correct

these

faults
It
IS
recommended

t
tat

servIce
to

the

steermg
and

suspension

system
be

referred
to

your
Datsun

dealer

oca

quallfied
specrallst
m

thiS

field

1
VibratIOn

felt
m

steermg
wheel

VIbratIon
can
be
caused

by
several

thmgs
includ

ing
lll1proper
aIr

pressure
m
tIres

uneven
wear

DIFFERENTIAL
REAR

AXLE
AND
REAR

SUSPENSION

161

T
8

0
to
9

0

kg
m
57
8
to
65
11b

ft

@

T
2
8

to
3
9

kg
m

20
2
to
28
2
Ib

ft

Apply
grease
on
the

surface
of
the
collar

when

replacing
oil
seal

Brake
tube

T
1

7
to
2
0

kg
m

23
3

to
14
5
Ib

ft

Tread

1260

Use
the
shims
to

adjust
the

gap
C

between

the
wheel

bearing
and
the

recess
in
the
axle
tube
end
The

gap
should
be
beteewn
0
to
0
1
mm

0

to
0
0039

in

12

Fill
the
differentIal

housmg
With

specmed

lubncabng
011

REAR
SUSPENSION

WAGON

The
rear

suspensiOn
consists
of
semi
elhpnc

leaf

spnngs
hydraulJc
shock
absorbers
and
rub

ber

bumpers
Iso
clamp
deVices

are
used
for

attaching
the
axle

housmg
to
the

spnng
The

leaf

spnngs
shock

absorbers
and
rear
axle
hous

mg
are
mounted
on
rubber

bushmgs
at
each
end

See

Figure
22
REAR
SPRING

REMOVAL

INSPECTION
REPAIR

AND

INSTALLATION

WAGON

1
Jack

up
the
center
of

the
rear
axle
until
the

wheels
are
off
the

ground

Support
th
e
rear
end

With
stands

2
Remove

spare
tIre

3

Disconnect
shock
absorber
bottom

end
from

spnng
lower
seat

4

Loosen
rear

spring
U

bolt
nuts
Remove

bolts

bumper
assembhes

spring
seat
location

plates
and
seat

pads

5
Remove

four

fiXing
bolts

holdmg
the
front

bracket

See

Figure
29

l

6
Lower
the
rear

spnng
and
the
bracket
from

the

body

7
Remove
rear
shackle

upper
and

lower
nut

8

Separate
front
bracket
from

spnng
by
remov

mg
front

pms

9
Exanune
the

spring
leaves
for
fractIires

cracks
or
other

damage
Replace
as

reqwred

10
Check
front

pm
shackle

U
bolts
and

spnng

seat
for
wear
cracks

and
other

damage
Replace

1f
defects
are
found

11

Inspect
all
rubber

parts
for
wear

damage

and

general
condil1on

Replace
as

reqUired

12
Install
the

rear

spnngs
in
the
reverse
of

removal

13

See
that

bumper
is

properly
installed
The

elongated
flange
of

the
rubber

bumper
should

face
the
rear

190

CHAPTER
FOURTEEN

Master

Cylinder
Assembly
and
Installation

I
Assemble
the
master

cyhnder
m
the

reverse

order
of

dIsassembly

2
Pnor
to

assembly
soak

piston
cap
m
brake

flwd

Install

piston
so
that
It
seats

firmly
on
the

piston

cup

3
Coat
the

cyhnder
bore

and

pISton
assemblies

With
clean

brake
flwd
before

assembly

4
When

assembly
IS

complete
mount
master

cylmder
on
dash

wall
and
hook

connecting
rod

to
brake

pedal
Replace
return

sprmg
Fill
the

reservOir
With

clean
brake
flUid

5
If

aIr
has

seeped
mto
the
brake
Imes
bleed

the

brakes
as
descnbed
later
m
thIS

chapter

FRONT
DISC
BRAKES

SEDAN
AND

WAGON

Brake

Pad

Replacement

Pad
wear
should
be
checked

every
4
000

nuIes
Clearance
between

the

pad
and
the
rotor

IS

adjusted

automatIcally
and
therefore
IS
not
a

wear
mdlcator

Pad
thiCknesS
IS
checked

by
re

movmg
the
antI

rattle

clJp
When
the

pad
hning

becomes

worn
to

0
04

Imm
replace
all

pads
on
the

front
wheels

I
Remove

the
hub

cap
loosen
the
hub
nuts

jack

up
the
vehicle

support
with

stands
and

remove
the
front
wheels

2
Remove

the
antI
rattle

clJp
from

the

caliper

plate
as
shown
m

Figure
S

jty

3
Loosen
the
bleed
screw
Pull
the

calJper
plate

outward
4
Push
the

pISton
m

approximately
0
157
in

4mm

as
shown

m

Figure
6

5
The
outer

plate
should

be
loose

enough
to
be

removed
See

Figure
7

6

Dra
y
the

calJper
plate
rlfward

and
remove

the
inner

pad

7

Wipe
exposed
surface
of

piston
thoroughly

8
Push
the

piston
mto
the

cyhnder
bore
untJI

the

new

pads
can
be
mstalled
onto
the

calJper

plate

9
After

instl
llatIon
test
the
brakes
at
slow

speed
to
make
certam

they
are
fitted

properly

and
that

no
au
entered
the

hydraul1c
hnes
Bleed

the
brake

system
If

required

Front
Disc
Brake
Removal

I
Jack

up
the
vehicle

place
It
on
stands
and

remove
the
wheels

P

BRAKES
191

2
Disconnect
the
front
brake
hose
from
the

brake
tube
See

Figure
8
and

plug
the
brake

hne
to
avoid
flwd

loss

3
Screw
out
the
bolts

fixing
the

calJper
to
the

knuckle

flange
and
remove
the

calJper
assembly

as
shown
m

Figure
9

4
Remove
the

spmdle
nut
and
the
dISC
hub

Separate
the
rotor
from
the
hub

assembly
See

Figure
10

Front
Disc
Brake

Disassembly

Figure
11
next

page
IS
an

exploded
diagram

of
the
front
disc
brake

assembly
Refer
to

figure

and
follow
the

followmg
procedures

I
Remove
the
antI
rattle

clip
from
the

calJper

plate
and
remove
the
brake

pads
4

2
Remove
the
tension

spnngs
and

pull
the

cyhnder
out
of
the

caliper

plate
3
Remove
the

piston
by
applymg
air
or

hy

draulJc

pressure
to
the
flwd
mlet
hole
Remove

the
rubber
seal
from
the

groove
on
the

cyhnder

Remove
the
retamer
and

Wiper
seal
The

pISton

can
now
be
removed

Front
Disc
Brake

Inspection
and

Repair

I
Check
the

cyhnder
assembly
for

leakage
and

damage
Replace
If
defects
or

damage
are

apparent

2
Check
the
disc
brake

pads
for
wear
and

cracks

Replace
all

pads
If
It
IS

necessary
to

replace
any

fi

3
Check
the

caliper
for

damage
Replace
as

reqUIred

4
Check
the
rotor
for
scratches

sconng
and

general
conditIon
The
rotor
can
be
resurfaced
If

defects
are
found
Standard
rotor
thiCknesS
IS

o
0394
m

IOmm
The
hm1t
of

reconditIOning

thickness
IS
0
331
m
8
4mm

Replace
rotors
If

recondltIomng
limits
have
been
reached

5
Check
the
rotor
for
TWlout

usmg
a
dial

gauge
as
shown
m

Figure
12
Rnnout

ot
the

rotor
should
be
less
than
0
0024

m
0

06DlIll

BRAKES

ZOI

Cross
Rod

Removal

Wagon

I
Remove
the

pull
off

spnngs
at
each
end
of

the

cross
rods

2

RelI
ove
clevis

pms
and

cross
rods

Rear
Cable

Removal

Pick
op

1
Remove

cleVIS

pm
and

disconnect

equalizer

from

equal1zer
link

2
Remove
lock

plate
1
and
cable

spring
2

as
shown

ill

Figure
24

3
Remove
both

rear
brake
drums
DISConnect

rear
cable
from

toggle
lever
3

Separate
cable

connecting
flange
4
from
brake
dIsc
See

Figure
25

4
Remove
rear
cable

Handbrake

Inspection
and

Repair

1

Inspect
all

cables
and

parts
for

damage
ex

cessive

elongation
and

general
wear

Replace
as

reqUlred
I

2

Inspect
ratchet

pawl
and
teeth
on

control

stem
for
excessive

wear

Replace
as

reqUIred

3
Check

springs
for

weakness

Replace
as

reqUIred

Handbrake

Installation

I

Install

parts
of
the
handbrake

system
m
the

reverse
of

removal
Make
certam
all

connections

are

tight

2
Lubncate
all

slIdmg
parts
With

muItl

purpose

grease

Front
Brake

Adjustment
Sedan
and

Wagon

AdJustment
of
the

front
dIsc
brake
units
18

not

reqwred
as
it

18
made

automatIcally
Re

place
the
front
dISC
brake

pads
and
rebwld
the

pISton
assemblJes
If
the

brakes
are

defective

Front
Brake

Adjustment
Pick

up

I
Refer
to

Figure
26
Jack

up
vehicle
to
lIft

wheel

requiring

adJustment

2

Remove
rubber
boot

from

brake
disc

3

Lightly
tap
adJuster

housmg
and
move
It
for

ward
Turn

adJuster
wheel

with
a
screwdriver

and

spread
brake
shoes

Stop
turnmg
adJuster

wheel
when

a

considerable

drag
is

felt
on
brake

drum

NOTE
For

both

left
and

right
brakes

brake
shoes

spread
when

adJuster

wheelIS

turned
downward

4
Return

adJuster
wheel
12
ratchet
teeth
to

obtam
correct
clearance

between
brake
drum

and

shoes

5

Turn

brake
drum
to
make

sure
that
drum

turns
Without

draggmg
If

draggmg
exists

readJust