1977 DATSUN PICK-UP brake

Condition

Noise

Grating
tire
noise

Jumping
of

disc
wheeL

Excessively
or

partially
worn

tire
Front
Axle
Front

Suspension

Probable
cause

Loose

steering
gear
bolts

linkage
and

suspension

groups

Faulty
shock
absorber

Damaged
wheel

bearing

Worn

steering
linkage
and

steering
gear

Worn
of
loose

suspension
link
screw

bushing

Improper
air

pressure
of
lire

Incorrect
wheel

alignment

Deformed
knuckle

spindle
and

suspension
linkage

Rough
driving

Improper
air

pressure
of
tire

Unbalanced
wheels

Faulty
shock
absorber

Worn
tire

Deformed
wheel
rim

Improper
air

pressure
of
tire

Incorrect
wheel

alignment

Damaged
wheel

bearing

Incorrect
brake

adjustment

Improper
tire

shifting
rotation

Rough
and

improper
wiving
manner

FA
16
Corrective
action

Retighten

Replace

Replace

Replace

Replace

Adjust

Adjust

Replace

Avoid

rough
driving

Adjust

Adjust

Replace

Replace

Replace

Adjust

Adjust

Replace

Adjust

Adjust

Drive
more

gently

DESCRIPTION

The
rear
axle

assembly
is
of

the

semi

floating

type
in

which
the
vehicle

weight
is

carried
on
the
axle
shafts

through

bearings
enclosed
in
the

bear

ing
cages
on
outer

rear
axle

case
The

axle
case
is
a

pressed
steeJ

Banjo

type
housing

The

rear
axle

assembly
is

attached

to
the
frame

through
semi

elliptic
leaf

springs
and

telescopic
hydraulic
shock

absorbers

Rubber

bushings
at

either

end
of

the
leaf

springs
and
shock

absorbers

are

designed
to
absorb
vibra

tion
and
noise

The
rear

axle
shaft

splines

engage

the
differential

side

gears
with

a
float

ing
fit
The

outer
ends
are

supported

in
the

bearing
cages
by
tapered
roller

bearings

The

bearings
are
lubricated

by

wheel

bearing
grease
The
axle
shaft
oil

seals

are
located

outboard
and

inboard

of
the

bearing
The

bearings
are

se

cured

against
shoulders

on
the
shafts

by
press
fit

and
held
in

place
by
a

large
nuts

The

bearing
cages
hold
the

bearings

against
shoulders
on
the
axle

case

Whee
side
thrust
is
taken

at
the

wheel

bearings

through
the
thrust

block
so
an
axle
shaft

may
be

re

moved

simply
by

removing
the
bolts

holding
the
brake
disc
to
the

bearing

cage
and
the
rear
axle
case

REMOVAL
AND

INSTALLATION

REAR
AXLE

ASSEMBLY

It
is
not

necessary
to
remove
the

reaT
axle

assembly
for

any
normal

repairs

However
if
the

axle
case
is

dam

aged
the
rear
axle

assembly

may
be

removed
and

installed

using
the
fol

lowing
procedures

I

Raise
rear

of
vehicle

high

enough

to

permi
t

working
underneath

Place
a

jack
under
center
of
axle
case

so
it

just

starts
to

raise
rear
axle

assembly

Place
stands

solidly
under
frame

members
on
both
sides
Remove

rear

wheels
Rear
Axle
Rear

Suspension

2

Mark

relationship
across

propeller

shaft

flange
and

companion

flange
of

differential
carrier
so
that
the

original

combination
is
restored
at

assembly

3

Remove
bolts

retaining
center

bearing
bracket
and

connecting
shaft

to

companion
flange
Withdraw

pro

peller
shaft
sleeve

yoke
from

transmis

sion

by
moving
the

shaft
rearward

passing
it
under

rear
axle

4

Disconnect
rear
hand

brake
cable

Q
by

removing
adjusting
nut

@
three

clamps
ID
and

connector

@

Slide
front
cable

rearward
and

discon

nect
rear

cable

@
at
connector

ID
by

removing
three

clamps
ID

5

Disconnect

rear
brake

hose
at

frame

@
Cover
brake
hose

and

pipe

openings
to

prevent
entrance
of

dirt

6

Disconnect

shock
absorbers
at

lower
end

f
and

push
shock
ab

sorbers

up
out

of
the

way

7

Lower

jack
under

axle
case
Re

move
U

bolts

spring

clips
@
to

separate
axle
case
from

spring

8

Place
a

jack
under

center
of
axle

case
Pass
axle

case

through

space

above

spring
and
take
it

out
to
the

side

RA134

Fig
RA
3

Removing
rear

axle

assembly

9
Install

the
axle
case

assembly
in

the
reverse
order

of
removal

RA
3
RA312

Fig
RA
2
Under
view

Tightening
torque

U
bolt

Spring

clip

7
3
to

9
9

kg
m

53
to
72

ft
lb

Shock
absorber

lower
end
nut

1
6
to
2
2

kg
m

12to

16ft
Ib

Brake

pipe
flare

nut

I
S
to
1
8

kg
m

II

to
13
ft
Ib

Propeller
shaft
to

companion

flange
connecting
bolt

2
0
to

2
7

kg
m

14
to
20
ft
Ib

Center

bearing
bracket

fixin
holt

1
6
to
2
2

kg
m

12
to
16
ft
Ib

REAR
AXLE
SHAFT

AND

WHEEL

BEARING

I
Raise
rear
of
vehicle
and

support

under
axle
case
on
stands
Remove

rear
wheel

2
Disconnect

rear
hand

brake
cable

by
removing
adjusting
nut
and

clamps

3
Disconnect

brake
tube
at
rear

wheel

cylinder
Cover
brake

tube
and

wheel

cylinder
openings
to

prevent

entrance
of
dirt

4

Remove
brake

drum

Not

If
brake

drum
cannot
be

easily

removed
return

brake

adjuster

install

two
bolts

M8
x

I
2S
in

holes
on
the

flange
face
of
brake

drum
and

tighten
bolts

evenly
until

brake
drum
is
driven

out

5

Remove

nuts

retaining
wheel

bearing
cage
to
brake
disc

I

Jq
AA135

Fig
RA
4
Removing
nuts

AA418

Fig
RA
5

Removing
rear
axle

shaft

assem

bly

7

Remove
oil
seal
in

axle
case
if

necessary
and
install

new
seal
Insure

against

damaging
the

seal

lip
Rear
Axle
Rear

Suspension

8

Position

axle
shaft
in
vise

with

Rear

Axle

Stand
ST07630000

9
Unbend
lock
washer

with
a
screw

driver

Note
Do

not
use
used
lock

washer

again

RAl38

Fig
RA

6
Unbending
lock
washer

10
Remove
lock

nut

using
Rear

Axle

Bearing
Lock
Nut

Wrench

ST38020000

I

AA139

Fig
RA
7
R

mouing
lock
nut

II
Withdraw
wheel

bearing
to

gether
with

bearing
cage
and
brake

disc

using
Rear
Axle
Shaft

Bearing

Puller
HT72480000

HT72480000

r

t

Rvr

G

l
AA343

Fig
RA
8

Removing
bearing
o

12

Remove
oil
seal
in

bearing
cage

if

necessary

13

To
remove

wheel

bearing
outer

race

after
removed
oil
seal

apply
a

brass
drift
to
race

side
surface
and

withdraw
it

by
tapping
the

lop
of

drift
with

a
hammer

Installing
can
be

proceeded
in
the

reverse

order
of
removal

procedure
as

follows

RA
4
I
Fit

wheel

bearing
outer

race

by

tapping
with
a

brass
hammer

evenly

while

fitting

2
Install

a
new

oil
seal
in

bearing

cage
Lubricate

cavity
between
seal

lips
with

wheel

bearing

grease
after

fitting
seal

3
Place

bearing
cage
with
brake
disc

and

bearing

spacer
on
axle

shaft
and

fit

bearing
cone

To
install

bearing

cone

apply
a
brass
drift
to
race
side

surface
and

tapping
the

top
of
drift

with
a

hammer

AA141

Fig
RA
9

Installing
whetl

bearing

4
Place

bearing
lock
washer

Q
and

bearing
nut
lock
washer

@
on
axle

shaft

and

tighten
lock
nut

@
using

Rear

AJde

Bearing
Lock
Nut

Wrench

ST38020000

and
bend

up
lock
wash

er

Notes

a
Be

careful

to

place
the
faced

side
of

nut
to
washer
side
so

that
washer
is

not

damaged

b
Coincide
washer

lip
with
nut

groove

correc

ly
by

tightening
nul
and

bend
washer

carefuljy
so
that

lip

will
nol
be

damaged

Tightening

torque

IS
to
20

kg
m

J08
to
14S
ft
Ib

t
i

i

f

ifii
itf

L

4

S

11

iI
i

j

pu
y
J
t

Mf

i

I

AA142

Fig
RA
IO
Layout
of
ock
nut

DATSUN
PICK
UP

MODEL
620
SERIES

l
4ISSAN
I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
SECTION
BR

BRAKE
SYSTEM

GENERAL

DESCRIPTIDN
BR
2

ADJUSTMENT
BR
2

SERVICE
BRAKE
BR
4

HAND
BRAKE
BR
18

SERVICE
DATA
AND

BR
2D

SPECIFICATlDNS

TROUBLE
DIAGNDSES

BR
22

AND

CORRECTIONS

SPECIAL
SERVICE
TOOLS
BR
25

The
620

series
vehicles

are
equip

ped
with

hydraulic
brakes

on
the
four

wheels
and
mechanical
hand
brakes

on

the
rear
wheels
The
front
brake
is

the
uni
servo

type
and
the
rear
the

duo

servo
with
the
built
in

hand

BRAKE
PEDAL

FRONT
BRAKE

REAR
BRAKE

BRAKE
PEDAL

Qi

f

l

II

t

Unit

mm
in

I
Under
the
condition
that
the

push
rod
of
brake

lamp
swi

tch
is

pushed
in

position
the

height
of
brake

pedal
from
toeboard
to
148
mm
5
83

in

operating
the
switch

adjusting

nuts
Then

tighten
nuts

securely

Tightening
torque

1
2

to
1
5

kg
m

9
to
I
I
ft
Ib

2

Adjust
the

length
of

push
rod
Brake

System

GENERAL
DESCRIPTION

brake
The
mechanical
hand
brake
is

controlled

by
a
hand
brake
lever
locat

ed
in
the
driver

s

compartment

For
added

safety
the
tandem

I
1lI3ter

cylinder
Master
Vac
and

Nissan
Load

Sensing
Valve
N

L
S
V

ADJUSTMENT

CONTENTS
are
standard

equipment
on
all
models

The
Master
Vac
is
installed
to
increase

braking
force
The
N
L

S
V
ensures

greater
safety
and

reliability

BR
2

BR
2

BR
3
HAND

BRAKE

Parking
brake

BLEEDING
HYDRAULIC
SYSTEM
BR
3

BR
3

Free

height

Full
stroke
at

pedal
pad
A
148

5
83

B
134

10
140

5
28
to
5
51

C
43
to
49

1
69

to
1
93
Depressed
height

1
Push
rod

adjusting
nut

2
Switch
adjusting
nuts

3
BraKe

lamp
switch

BA765

Fig
BR
l

Adjusting
brake

pedal

with
its

adjusting
nut
so
as
to
become

0
6
to
1
2
mOl
0
024
to
0

047
in
in

play
Then

tigh1en
nut

securely

Tightening
torque

1

6
to
2

2

kg
m

12

to
16
ft
lb

Note
Take
care
not
to
allow
the

push

rod
to

get
into
master

cylinder
in

free
condition

BR

2
3
After
completing

adjustment

operate
brake

pedal
several
times
to

ensure
that
it
travels
over
its
entire

stroke
of
137
mm
5

39
in

smoothly

without

showing
squeak
noise
twist

ing
or
interference

FRONT
BRAKE

1
Raise

vehicle
until
wheel
clear

floor

2

Remove
rubber
boot
from
brake

disc

3

Ughtly
tap
adjuster
housing
and

move
it

forward
Turn
down

adjuster

wheel
with
a

screwdriver
and

spread

brake
shoes

Stop
turning
adjuster

wheel
when
a
considerable

drag
is
Jelt

and
lock

up
brake
drum

Note
For
both

right
and
left
brakes

brake
shoes

spread
when

adjuster

wheel
is
turned
downward

4
Return

adjuster
wheel
12
ratches

to
obtain
correct
clearance
between

brake
drum
and
brake
shoes
Turn

brake
drum
and
make
sure
that
brake

drum
turns
without

dragging
when

brake
shoes
interfere
with
brake
drum

then

readjust
clearance

5

Install
rubber
boot

Fip
BR
2

Adjusting
front
brake

REAR
BRAKE

With
hand
brake

fully
released

adjust
rear
brake
shoe
clearance
For

the
service

procedures
refer
to
Front

Brake

Fig
BR
3
Adjusting
rear
brake

HAND
BRAKE

Parking
brake

I
Raise

vehicle
until
rear
wheels
are

clear
of
the
floor

2

Apply
hand
brake
lever

operate

lock
nuts
to
be
80
to
100

mrn
3
lS
to

3
94
in

in
hand
brake
lever
stroke

and
tighten
lock
nuts

securely

Applying
force
to
hand
brake

lever

20

to
30

kg
44

to
661b
Brake

System

1
t

0
t

6

0

I

o

nJ
c

BA655

Fig
BR
4

Adjusting
lock
nut

3

Fully
release
hand
brake
and

rotate
rear
wheels
No

drag
should
be

present

Notes

a
Before

adjusting
hand
brake
com

plete
the

adjustment
of
rear
brakes

b
After

adjusting
hand
brake

operate

the
brake
lever
to
make
cable

stable

c
Hand
brake
must
be

operated

smoothly
while

being

pulled
and

released
Make
sure

that
no
abnor

mal
noise
dragging
twisting
or

other
faulty
condition
occurs

BLEEDING

HYDRAUL
Ie
SYSTEM

Hydraulic
brake

system
must
be

bled
whenever

any
line
has
been
dis

connected
or
air
has

entered
into

system

When

pedal
action
has
a

spongy

feel
it
is
an
indication
that
air
has

entered
the

system

Bleeding
the

hydraulic
system
is

an

essential

part
of

regular
brake
service

BR
3
I

Clean
all
dirt
around
master

cyl

inder
reservoir

I
remove
cap
and

top
up

reservoir

with
recommended
brake

fluid

2

Thoroughly
clean
mud
and

dust

from
bleeder
valve

so
that
outlet

hole

is

free
from

any
foreign
material

Install
a

bleeder
hose
on
bleeder
valve

Place
the
other
end
of
hose
in

a

container

filled
with
brake
fluid

3

Depress
brake

pedal
two
or
three

times
then

keep
pedal
fully
depressed

4

With
brake

pedal
fully
depressed

open
bleeder
valve
to

expel
air

Notes

a

Pay
attention
to
brake
fluid
level
in

master

cylinder
reservoir

during

bleeding

operation

b
Do
not

reuse
brake
fluid
drained

during
bleeding

operation

c

Bleed
air
as
follows

1
Master

cylinder
front

2
Master

cylinder
rear

3
N
L
S
V

front

4
Front

wheels

S
Rear

wheels
left
one
first

6
N
L

S
V

rear

7
N
L

S
V
center

d
Exercise

care
not
to

splash
brake

fluid
on

exterior
finish
as
it

will

damage
the

paint

5

Close
bleeder
valve

quickly
as

brake

pedal
is
on
down
stroke

6
Allow
brake

pedal
to
return
slow

ly
with
bleeder
screw
closed

7

Repeat
bleeding
operations
until

no
air

bubbles
show
in
hose

Notes

a
Brake
fluid

containing
air
is

white

and

has
visible
air

bubbles

b
Brake
fluid

containing
no
air

nms

out
of
bleeder
valve
in
a

solid

stream
free
of
air

bubbles

8

Repeat
above

steps
on
the

re

maining
brake
lines

to

expel
all
air

Brake

System

SERVICE
BRAKE

CONTENTS

BRAKE
PEDAL

REMOVAL

INSPECTION

INSTAllATION

MASTER

CYLINDER

REMOVAL

DISASSEMBl
Y
AND
ASSEMBLY

INSPECTION

INSTAllATION

BRAKE
LINE

REMOVAL

INSPECTION

INSTAllATION

N
L
S
V

DESCRIPTION

N
L
S
V
TEST

FRONT
BRAKE
BR
4

BR
4

BR
4

BR
4

BR
5

BR
5

BR
6

BR
6

BR
5

BR
7

BR
B

BR
B

BR
B

BR
9

BR
9

BR
9

BR
lO

BRAKE
PEDAL

REMOVAL

Remove

pedal
return

spring

I

2

3

4
REMOVAL

DISASSEMBl
Y
AND

ASSEMBLY

INSPECTION

INSTAllATION

REAR

BRAKE

REMOVAL

DISASSEMBLY
AND
ASSEMBLY

INSPECTION

INSTAllATION

MASTER
VAC

DESCRIPTION

INSPECTION
OF

OPERATION

REMOVAL

DISASSEMBLY

INSPECTION

ASSEMBl
Y
AND

ADJUSTMENT

INSTAllATION
BR
lO

BR
1O

BR
lO

BR
ll

BR
12

BR
12

BR
13

BR
13

BR
13

BR
14

BR
14

BR
14

BR
16

BR
16

BR
17

BR
17

BR
IB

b

i
t

I
Fulcrum

pin

2
Return

spring

3
Pedal

bushings

4
Clevis

pin

5
Brake

pedal
5

BR766
BR657

Fig
BR
5
Broke

pedal
mounting

2
Remove
cotter

pin
from
clevis

pin
and

separate
pedal
from
Master

Vac

push
rod

3
Remove
fulcrum

pin
and

pedal
INSPECTION
Fig
BR
6
Broke

pedal

INSTALLATION

Check
brake

pedal
for
the

following

items

servicing
as

necessary

I
Check

pedal
bushing
for

wear

deformation
or

damage

2
Check

pedal
shaft

sleeve
for
wear

or
roughness

3
Check
for

bent
brake

pedal

4

Check
for

fatigued
return

spring
Note
Loosen
fulcnun

pin
clockwise
Install
b
rake

pedal
in
the
reverse

sequence
of
removal

paying
attention

to
the

following
instructions

1
Insert
fulcrum

pin
into
hole
in

brake

pedal
and
bracket
from

right

side

2
Install
clevis

pin
from
left
hand

side

BA
4

3

Hook
return

spring
to

brake

pedal

assembly
from
accelerator

pedal
side

4

Apply
a

coating
of
recommended

multipurpose
grease
to
the
inner
and

outer
faces
of

pedal
bushing
clevis

pin
and
hooks

of
return

spring

Charge
the
clearances
in

bushings
with

grease

Grease

m
n

L

g

U

BR298

Fig
BH

7
Greasing
place

5

lnstali
brake

lamp
switch

6

Adjust
the
brake

pedal
after
in

stallation
Refer
to
the

instructions

under

Adjustment

Tightening
torque

Fulcrum

pin

1

9
to
2
4

kg
m

14to

17ft
ib

MASTER
CYLINDER

The
diameter
of

cylinder
is
19
05

mm

y
in
for

all
models

The
tandem

master

cylinder
contains
two
fluid

reservoirs
which

connect
the

front
and

rear
brake

lines

independently

Braking
force
is

constantly
main

tained
when
failure
occurs
in
either

the
front
brake

system
or

the
rear

brake

system
Failure
in
the

front

brake

system
will
leave
the

rear
brake

still

operative
or

failure
in
the
rear

brake

system
will
leave
the
front
brake

system
still

operative

The
reservoir
is

eq
ui

pped
with
a

retention

cap

To
remove
this

cap
proceed
as

follows

I
Tum
retention

ring
fully
in
the

REMOVE
direction

2
Pull
out
retention

cap
Brake

System

To
install
it

proceed
as
follows

I
Turn
retention

ring
used
in
the

retention

cap
fully
in

the
REMOVE

direction

Tokico

@

1tr

I

I

I
j
1

Nabco

BR926
2

Align
the

projection
in
retention

cap
with
the
slit
in
the
reservoir
tank

and

push
retention

cap
in
the
tank

3
Turn
retention

ring
fully
in
the

TIGHTEN
direction

00
CD
1
Reservoir

cap

2

Reservoir
tank

3
Secondary

piston
return

5pring

4

Stopper
screw

5

Secondary

piston

6
Primary

piston
return

spring

7
Primary

piston

Fig
BR
B
Sectional
view

of
tandem
master

cylinder

o

BR658

Fig
BR
9
Master

cylinder

BR
5
REMOVAL

1
Disconnect

front
and
rear

brake

tubes
from

master

cylinder

Notes

a
When

removing
brake
tubes
use

Flare
Nut

Torque
Wrench

GG94310000

Never

use

open
end
or

adjustable

wrench

b
When

disconnecting
brake
tubes
be

sure
to
use
a

container
to
receive

draining
brake
flnid
Use
of

rags
is

also

suggested
to

keep
adjacent

parts
and
area
clean

2
Remove
master

cylinder
securing

nut
Then
master

cylinder
can
be

taken

out