brakes DATSUN 210 1979 Service Manual

Automatic

Transmission

TROUBLE
DIAGNOSIS
AND
ADJUSTMENT

Since
mo
automatic

transmission

troubles

can
be

repaired
by
simple

adjustment
do

not
disassemble
im

media

tely

Firstly
inspect
and

adjust
the
auto

D1
3tic
transmission
in

place
utilizing

the
Trouble

Shooting
Chart

If
the
trouble

can
not
be
solved

by

this

procedure
remove
and
disas

semble
the
automatic
tlllnsmission

It

is
advisable

to
check

overhaul
and

repair
each

part
in
the

order
listed
in

the
Trouble

Shooting
Chart

In
the
Trouble

Shooting
Chart

the

diagnosis
items

are

arranged
ac

cording
to

difficulty
from

easy
to

difficult
therefore

please
follow
these

items
The
tlllnsmission
should
riot

be

removed
unless

necessary

2
Tests

and

adjustments
should
be

inade
on
the
basil
of

standard
values

and
the
data
Should

be
recorded

INSPECTION
AND

ADJUSTMENT

BEFORE

TROUBLE
DIAGNOSIS

TESTING
INSTRUMENT
FOR

INSPECTION

I

Engine
t

chometer

2
Vacuum

gauge

3
Oil

pressure
gauge

It
is
convenieni

to
install
these

instruments

in
a

way
that
allows
meas

urements
to

be
made
from
the
driver
s

seat

CHECKING

OIL
LEVEL

In

checkIng
the
automatic
transmis

sion
the
oil
level
and
the
condition
of

oil
around
the
oil
level

gauge
should
be

examined

every
S
ooo
Ion
3
000

miles
This
is

an

easy
and
effective

trouble

shooting
procedure
since
some

changes
in

oil
condition
are
often

linked
with

developed
troubles
For
instance

Lack
of
oil
causes
defective

opera

tion

by

making
the
clutches
and

brakes

slip
resulting
in

severe
wear

This
is

because
the
oil

pump
sucks

air

causing
oil

foaming
thus

rapidly

deteriorating
the
oil

quality
and

pro

ducing
sludge
and
varnish

Excessive
oil
is
also
bad
because
of

oil

foaming
caused

by
the

gears
stirring

up
the
oil

During

high
speed
driving

excessive
oil
in

the
transmission

often

hlows
out
from
the

brealher

Me

urlns
011
level

To
check
the
nuid

leyel
sian
Ihe

engine
and
run
it

until
normal

operat

ing

temperatures
oil

temperature
SO

to
800C

122
to
1160F

Approxi

mately
ten
minute
of

operation
will

raise

the

temperature
to

this

range

and

engine
idling
conditions

are
stabi

lized
Then

apply
the
brakes
and

move
the

transmission
shift
lever

through
aU
drive

positions
and

place
it

in

park
P

position
In
his

inspec

tion

the
car
must
be

placc
d
on
a
level

surface

The
amount
of
the
oil
varies
with

the

temperature
As
a
rule
the
oil
level

must
be

measured
after
its

tempera

ture
becomes

sufficiently

high

I
Fill

the
oil
to
the
line
H
The

difference
of

capacities
between
both

H
and

L
is

approximately
0
4

liter
J
U
S

pt
Y
Imp
pt
and

therefore
do
not

fill

beyond
the
line

H

2
When

topping

up
and

changing

oil
care
should
be
taken
to

prevent

mixing
the
oil

with
dusl
and
water

In

pectlns
oU
condition

The
condition
of
oil

sticking
to
the

level

gauge
indicates
whether
to
OVOl

haul
and

repair
the
transmission
or

luok
for
Ihe
defective

part

If
the
oil
has
deteriorated
to
a

varnish
ike

quality
it

causes
the

con

trol
valve
to
stick
Blackened
oil
indi

cates
a
burned
clutch
brake
band
etc

AT
39
In
these
cases
the
transmission
must

be

repaired

CAUTION

I
In

checking
oil
IlVal
use

special

piper
Cloth

tohandla
the
18V81

llIugi
Ind
be
careful
not
to
let
the

scraps
of

paper
end
cloth

stick
to

the

IlIUp

b
U
lutomatic
transmission
fluid

having
OEXRON
ida
ons

only
in
the
3N71
B
eutomatic
trans

mission

c

Pay
IttBntion
blcau
the
oil
to
be

used
differs
from
that
used
in
the

Nissen
Full
Autometic

TllInsmis

sion
3N71A
N8V8r
mill

thl
oils

Note
Insert

the

gauge
fully
and
take

it
out

quickly
before

splesbing
oil

edheres
to
the

gauge
Then
observe

the
level

INSPECTION
AND
REPAIR

OF
OIL
LEAKAGE

When
oil

leakage
takes

place
the

portion
near
the

leakage
is
covered

with
oil

presenting
difficulty
in

detecting
the

spot
Therefore
the

places
where
oil
seals
and

gaskets
are

equipped
are
enumerated
below

Converter

housing

Rubber

ring
of
oil

pump
housing

Oil
seal
of
oil

pump
housing

Oil
seal
of

engine
crankshaft

Bolts
of
converter
housing
to
case

2
Transmission
and
rear
extension

Junction
of
transmission
and
rear

extension

Oil
cooler
tube
connectors

Oil
pan

Oil

pressure
inspection
holes
See

Fig
AT
81

Mounting
portion
of
vacuum
dia

phragm
and
downshift
solenoid

Breather
and
oil

charging
pipe

Speedometer
pinion
sleeve

Oil

seal
of

rear
extension

To

exactly
locate
Ihe

place
of
oil

leakage
proceed
as
follows

Automatic
Transmission

r

TROUBLE
SHOOTING
CHART
FOR
3N71B

AUTOMATIC
TRANSMISSION

he
number
shown
below
indicates
the

sequence
in

which
the
checks

should
be
taken

up

Trouble

ABeD
EFGH
I

J
K
L

MNOP
In
n

q
r
e
t
u
v

wxy

Engine
does

not
start
in
N
P

2
3
1

ranges

Engine
starts
in
other

lange
than
N

1
2

and

P

Sharp
shock
in

shifling
from
N
10

2

I
1
3
4

@

0

range

Vehicle

will
not

run
in

D

range
bul

1
2

3

@

runs
in
2
I
and
R

ranges

Vehicle
will

not
run
in
0
I
2

ranges
but
runs
in

R

ronge
1
2

4
5
6
3

7

@
@

C1u
ch

slips

Vcrypoor
acc
ler
t

n

Vehicle
will
nol
run
in

R

range
but

runs
in
Dn

2
and
I

ranges
1
2
3

5
6
4

@@

@
@

C1urch

slips
Very
poor
cceleralion

I

Vehicle
will
not
run
in

any
range
I
2
3
5

16
4
@

@

Clutches
or
brakes

slip
somewhat

I
2
6

3
5
7
4

1
@@

in

starting

Vehicle
runs
in
N

wnge
I
3
2

I@

Maximum

speed
not

attained

I

2
4

5
7
6
3
8

@@@lNl

Acceleration

poor

Vehicle
braked
when

shifting
into

312
I

@
@
@

OR

range

Ex
cessive

creep

I
I

I
I

No

creep
at
all
I
2

I
3
5
4

@@
@

Failure
In

dlilnge

gear
fHlIll
nd

I
2

3
5
6
7
4

@
@

to

3rd

Fililurc
10
l

h

mgc

gC
lr
frolll
ISf

I
2
3
5
6

817
4

@
@
@

III
2nd

Too

high
a

gear
change

point
from

15
to
2nd
from

2nd

to
I
2
3
5
6

4

3rd

Gear

change
directly
from
Ist
to

2

4
3
1

@
@

3rd

occurs

AT46

INSTALLATION
INSTRUCTIONS

Typical
Glrllng
B
ake
Pad

SYIlem

Girling
disc
brakes
are

very
similar
to
ATE
disc
brakes

except
that
the

piston
seal
does

not

pul
the

piston
and
brake
pads

away
from
the
rotor
In
the

Girling
System
with

the

pistons
i

the

relaxeilposition
the

pad
just
touches
the

rotor

Ped
Removal

1
Raise
the
car

alid
removiHire
and
wheel

2

Girling
disc
brake

pads
ere
held
in

piece
either

by
a
retainer

plates
or
b
retainer

pins
Retainer

plates
are
boiled
to

the
caliper
housing
and

need

only
to

be
loosened

and

roteted
out
of
the

way
Some
models
use
anti
raWe

springs
which
must

be

replaced
whenever
new

pads
ere
installed
The
retainer

pins
are

held
in

place
by

hairpin
type
spring
clips
There
are
two

types
of
breke

pads
used
with
the
retainer

pins
One
is

cut

away
for
the

pin
end
the
other
is
drilled
These

padS
ere

definitely

not

interchengeable

3
Remove
the
reteiner

4

Lift

padS
up
and
out
of
the

celiper

Pad

Installation

1
Attach

a

piece
of
hose
to
the
bleeder
screw
and

place
the

hose
into
a
container

2

Open
bleeder
screw
one
turn
and
with
even

pressure
push
the

pistons
down

to
the

bottom
of
the

caliper
bores

3
Tighten
the
bleeder
screw
and
remove
the

piece
o
hose
This

procedure
makes

room
for
the

added
thickness
of
the

new

linings

4

Reposition
the

pad
retainer
and
the
anti
rattle

spring
i

used
and

tighten
the
bolts

or

replace
the

retaining
pins
and
screw
them
with
the

hairpin
Iips

5
Check
to
be
sure

you
have

a

high
hard

pedal
then
test
the
car

See
Instructions
On
Back
of
Ball
For
Correct

Usage
of
EMP

Gh11ng
dlac
brall

Ilmple
to
art
lc

Depending
III

ppU

aUon
atalnln

pilla
nd

clip

may
blt

placed
by
larga
QU

pin

Form
No
91

Brake

System

TROUBLE

DIAGNOSES

AND
CORRECTIONS

Condition

Excessive

pedal
travel

Spongy
pedal

Poor

braking
effect
Probable
cause

Low
brake
fluid

level
or

empty
master

cyUnder
reservoir

Leakage
in

master

cylinder

Deteriorated

check
valve

Air
in

system

Faulty
brake

adjustment

Excessive
lateral

play
on
disc
caused

by

loose
or
worn
wheel

bearings
or

steering

parts

Low

fluid
level
in
master

cylinder

Air
in

system

Faulty
brake

adjustment

Reservoir
fIller

cap
vent
hole

clogged

Swollen
hose
due

to
deterioration

or
use
of

poor
quality
hose

Distored

brake
shoes
or

excessively
worn

or

cracked
brake
drum

Soft
or
swollen

caliper
seals

Use
of
a

brake
fluid

with
too
low

boiling

point

Fluid

leakage
in
brake
lines

Low

brake
fluid
level
or

empty
master

cylinder
reservoir

Air
in
brake

lines

Excessive
shoe

to
d
rum
clearance

Grease

oil
mud
or
water
on

linings
or

pads

Deterioration
of

linings
or

pads

Local
fit

of

linings
or

pads

Linings
or

pads
excessively
worn

Master

cylinder
or

wheel

cylinders
in

poor

condition

Frozen
or

seized

caliper
pistons
on
disc

brakes

Finding
mechanical

linkage
at
brake

pedal

and
shoes

BR
19
Corrective
action

Fill
and

bleed
as

necessary
Test

for
source

of

leakage

by
examining
all
lines

connec

tions
and
wheel

cylinder

Overhaul
master

cylinder

Replace
check

valve
and
bleed

system

Bleed

system

Adjust
shoe
to
drum
clearance

Inspect

auto

adjuster
operation

Replace
or

adjust

faulty
parts

Top
with
fluid
and

inspect
for

leakage

Correct
as

necessary

Adjust
shoe
to
drum
clearance

Inspect

auto

adjuster
operation

Clean
and
bleed

system

Replace
hose
and
bleed

system

Replace
faul

ty
parts

Drain

hydraulic

system
flush
with
alcohol

and

replace
all
seals

Replace
with

specified
brake
fluid
and

bleed

system

Check
master

cylinder
p
pmg
and

wheel

cylinder
for
leaks
and

repair

Fill
and
bleed

as

necessary

Bleed

system

Adjust

Clean
brake
mechanism
and
check
for

cause

of

problem
Replace

linings
or

pads

Replace

Shave
or

replace

Replace

Repair
or

replace

Disassemble

caliper
and
free

up
as

required

Free

up
as

required

Condition

Unbalanced
brakes

Brakes
fade

Brakes

drag
Brake

System

Probable

cause

Improper
tire
inflation

Improp
r

adjustment
of
shoe
to
drum
clear

ance

Grease
oil
mud
or
water
on

linings
or

pads

Mud
in
brake
drum

Deterioration

oflinings
or

pads

Excessi
wear
of

linings
or

pads

Wheel

cylinder
in

poor
condition

Poor

sliding
condition
of
brake
shoe

Looseness
of

cylinder
body
or

back

plate

securing
bolts

Scored
or

out
f
round

drums

Sticking
wheel
cylinder

cups

Deformation
of
back

plate

Incorrect

adjustment
of
wheel

bearings

Incorrect

adjustment
of
wheel

aligoment

Looseness
of
leaf

spring
securing
U
bolts

Brake
fluid

has
too

low

boiling
point

Use
of

improper

linings
or

brake

linings
are

contaminated

Brake
drums
are

out
f

round

Hydraulic
connections
master

cylinder
and

wheel

cylinders
are
corroded
or

damaged

Bleed
screw
is

open

Pedal

linkage
is

binding
or

push
rod

adjust

ment
is
too

long

Master

cylinder

compensator
part
is

ob

structed

Seized
master

cylinder

piston

Poor
shoe
condition

Poor
wheel

cylinder
condition

Deformation
of

piston

cups

Poor
condition
of

caliper
because
of

faulty

piston
seals

Excessive
runaut
of
rotor

Hand
brake

will
not
return

Clogged
m

ter

cylinder
return

port

BR
20
Corrective
action

Inflate

to
correct

pressure

Readjust

Clean
brake
mechanism
and

check
for

cause

of

problem
Replace

linings
or

pads

Clean

Replace

Replace

Repair
or

replace

Adjust

F
ten
or

replace

Recondition
or

replace
brake
drum
as
re

quired
Check
for

improper

lining
contact

with

dflllll
and

grind
lining
if

necessary

Recondition
or

replace
cylinder

Replace

Adjust
or

replace

Adjust

Tighten
or

replace

Drain
and
fill

system
with

appr
d
fluid

Replace
linings

Repair
or

replace
as

necessary

Repair
as

necessary

Close
screw

and
bleed

system

Lubricate

linkage
check

pedal
return

spring

for
condition
and

adjust
push
rod
as
neces

sary

Blowout

foreign
matter
with

compresSed

air

Disassemble

master

cylinder
and

replace

piston
Bleed

system

Clean
and

repair

Repair
or

replace

Replace

Replace
piston
seals

Turn
rotor
on
lathe
or

replace

Check
and

repair

Clean

Condition

Brakes

drag

Brake
chatters

Brake

squeals

Pedal

pulsates

Rear

lock

under

light
brake

pedal
force

Rear

lock

under

heavy
brake

pedal
force
Brake

System

Probable
cause

Clogged
brake
lines

Incorrect

adjustment
of
wheel

bearings

Improper
shoe
to
drum
clearance

Weak
shoe
return

springs

No

free
travel
in

brake
shoe
return

Groove

or
out
of
round
brake
drum

or
rotor

Loose

or
bent

support
plate

Distorted

brake

shoes
or

pads

Grease
or

brake
fluid
on

linings

Dirty
or
scored

brake
drums

Distorted
brake
shoes

or
bent

support
plate

Weak
or
broken
brake
shoe

retaining
spring

or
return

spring

Glazed
or

contaminated
brake

lining

Out
of
round
or
off
center
drum

On

disc
brakes
lateral
runout
of
brake

rotor

is

excessive

Excessive
variation
in

thickness
of
brake

rotor
surfaces

Improper
tire

pressures

Excessive

wear
of

tires

Faulty
NP
valve

Improper
tire

pressures

Excessive
wear
of
tires

Poor

front

braking
effect

Grease
oil
mud

or
water
on

linings

or

pads

Excessive
wear

of

linings
or

pads

Local
fit
of

linings
or

pads

Master

cylinder
or

wheel

cylinder
in

poor

condition

BR
2t
Corrective
action

Check
and
clean

Adjust
or
repair

Adjust

Replace

Adjust

pedal
height

Grind
or
replace
as

required

Tighten
support
plate
bolts
to

specified

torque
or

replace

plate

Replace
as

necessary

Replace
linings

Blowout

assembly
with

compressed
air

or

refinish
drum

Replace
faulty
unit

Replace
if

faulty

Cam

ground
lining
to
elilninate

glaze
If
it

doesn
t

replace
linings

Turn
drum
or

replace
as

necessary

Check
with
dial
indicator

turning
disc

by

hand
If
runout
exceeds

specifications
re

place
disc

Measure
around
disc
face
with
micrometer

Replace
disc
as

required

Check
and

adjust

Check
and

replace

Replace

Check
and

adjust

Check
and

replace

Clean
or

replace

Replace

Shave
or

replace

Repair
or

replace