brakes DATSUN PICK-UP 1977 Service Manual
[x] Cancel search | Manufacturer: DATSUN, Model Year: 1977, Model line: PICK-UP, Model: DATSUN PICK-UP 1977Pages: 537, PDF Size: 35.48 MB
Page 312 of 537
![DATSUN PICK-UP 1977 Service Manual
Automatic
Transmission
TROUBLE
DIAGNOSIS
AND
ADJUSTMENT
INSPECTION
AND
ADJUSTMENT
BEFORE
TRQUBLE
DIAGNOSIS
TESTING
INSTRUMENT
FOR
INSPECTION
CHECKING
OIL
LEVEL
INSPECTION
AND
REP DATSUN PICK-UP 1977 Service Manual
Automatic
Transmission
TROUBLE
DIAGNOSIS
AND
ADJUSTMENT
INSPECTION
AND
ADJUSTMENT
BEFORE
TRQUBLE
DIAGNOSIS
TESTING
INSTRUMENT
FOR
INSPECTION
CHECKING
OIL
LEVEL
INSPECTION
AND
REP](/img/56/56909/w960_56909-311.png)
Automatic
Transmission
TROUBLE
DIAGNOSIS
AND
ADJUSTMENT
INSPECTION
AND
ADJUSTMENT
BEFORE
TRQUBLE
DIAGNOSIS
TESTING
INSTRUMENT
FOR
INSPECTION
CHECKING
OIL
LEVEL
INSPECTION
AND
REPAIR
OF
OIL
EAKAGE
CHECKING
ENGINE
IDLING
REVOLUTION
CHECKING
AND
ADJUSTING
KICKDOWN
SWITCH
AND
DqWNSHIFT
SOLENOID
N
J
J
CII
Q
t
L
8li
p
JYSTMs
T
OF
MANUAL
LINKAGE
CHECKING
AND
ADJUSTING
INHIBITOR
SWITCH
STALL
TEST
STALL
TEST
PROCEDURES
JUDGEMENT
Since
most
automatic
transmission
troubles
can
be
repaired
by
simple
adjustment
do
not
disassemble
im
mediately
Firstly
inspect
and
adjust
the
auto
matic
transmission
in
place
utilizing
the
Trouble
Shooting
Chart
If
the
trouble
can
not
be
solved
by
this
procedure
remove
and
disas
semble
the
automatic
transmission
It
is
advisable
to
check
overhaul
and
repair
each
part
in
the
order
listed
in
the
Trouble
Shooting
Chart
I
In
the
Trouble
Shooting
Chart
the
diagnosis
items
are
arranged
ac
cording
to
difficulty
from
easy
to
difficult
therefore
please
follow
these
items
The
transmission
should
not
be
removed
unless
necessary
2
Tests
and
adjustments
should
be
made
on
the
basis
of
standard
values
and
the
data
should
be
recorded
INSPECTION
AND
ADJUSTMENT
BEFORE
TROUBLE
DIAGNOSIS
TESTING
INSTRUMENT
FOR
INSPECTION
I
Engine
tachometer
2
Vacuum
gauge
ROAD
TEST
VEHICLE
SPEED
AT
GEAR
SHIFT
CHECKING
SPEED
CHANGING
CONDITION
CHECKING
ITEMS
DURING
SPEED
CHANGE
SHIFT
SCHEDULE
LINE
PRESSURE
TEST
LINE
PRESSURE
governor
feed
pressure
JUDGEMENT
IN
MEASURING
LINE
PRESSURE
At
49
TR6
uBLE
SHOOTINC
CHART
INSPECTING
ITEMS
TROUBLE
SHOOTING
CHART
FOR
3N71B
AUTOMATIC
TRANSMISSION
TROUBLE
SHOOTING
GUIDE
FOR
3N71B
AUTOMATIC
TRANSMISSION
CONTENTS
AT
4B
AT
48
AT
4B
AT
49
AT
49
AT
49
AT
49
AT
50
AT
50
AT
50
3
Oil
pressure
gauge
It
is
convenient
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
o
illevel
and
the
condition
of
oil
around
the
oil
level
gauge
should
be
examined
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
faulty
operation
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
blows
out
from
the
breather
Measuring
011
level
To
check
the
fluid
level
start
the
engine
and
run
it
until
normal
operat
T
AO
AT
51
AT
51
AT
52
AT
52
AT
52
AT
52
AT
53
AT
3
AT
53
AT
53
AT
54
AT
57
ing
temperatures
o
temperature
SO
to
800C
122
to
l760F
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
all
drive
positions
and
place
it
in
park
P
position
In
this
inspec
tion
the
car
must
be
placed
on
a
level
surface
The
amount
of
the
oil
varies
with
the
temperature
As
a
rule
the
oil
level
must
be
measured
after
its
temper
ture
becomes
sufficiently
high
1
Fill
the
oil
to
the
line
H
The
difference
of
capacities
between
both
H
and
L
is
approximately
0
4
liter
Ji
V
S
p
Y
Imp
pl
and
therefore
do
not
to
fill
beyond
the
line
H
2
When
topping
up
and
changing
oil
care
should
be
taken
to
prevent
mixing
the
oil
with
dust
and
water
InspectIng
011
condition
The
condition
of
oil
sticking
to
the
level
gauge
indicates
whether
to
over
haul
and
repair
the
transmission
or
look
for
the
faulty
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
Page 318 of 537
![DATSUN PICK-UP 1977 Service Manual
Automatic
Transmission
TROUBLE
SHOOTING
CHART
FOR
3N718
AUTOMATIC
TRANSMISSION
The
number
shown
beluw
indicates
the
sequence
in
which
the
checks
should
be
taken
up
Trouble
AB DATSUN PICK-UP 1977 Service Manual
Automatic
Transmission
TROUBLE
SHOOTING
CHART
FOR
3N718
AUTOMATIC
TRANSMISSION
The
number
shown
beluw
indicates
the
sequence
in
which
the
checks
should
be
taken
up
Trouble
AB](/img/56/56909/w960_56909-317.png)
Automatic
Transmission
TROUBLE
SHOOTING
CHART
FOR
3N718
AUTOMATIC
TRANSMISSION
The
number
shown
beluw
indicates
the
sequence
in
which
the
checks
should
be
taken
up
Trouble
ABeD
EFGHIIJKL
MNOP
tnnqr
stuv
wxy
ngine
does
not
start
in
N
P
ranges
2
3
1
Engine
starts
in
other
range
than
N
and
P
1
2
Sharp
shock
in
shifting
from
N
to
0
range
Vehicle
will
not
run
in
D
range
bul
I
TUns
in
2u
l
and
R
ranges
2
4
@
3
5
6
3
7
@
@
2
1
3
Vehicle
will
not
run
in
0
1
2
ranges
bul
runs
in
R
range
1
2
Clutch
slips
Very
poor
acceleration
4
Vehicle
will
nol
run
in
R
range
bul
runs
in
0
2
and
I
r
nges
1
2
Iukh
slips
Very
poor
acceleration
3
5
6
4
@@
1
@
@
Vehicle
will
not
run
in
any
range
1
2
3
5
6
4
1
@
@
Clutches
or
brakes
slip
somewhat
1
2
6
I
3
5
7
4
@@
in
starting
Vehicle
runs
in
N
range
I
3
2
Maximum
speed
not
allained
1
2
4
5
7
6
3
8
OO
I@
Acceleration
poor
Vehicle
braked
by
Ihrowing
Icver
inlo
3
2
1
@
I
@
R
range
I
Excessive
creep
1
No
creep
al
all
I
2
3
5
4
@@
@
1
Failure
10
dumge
gear
from
2nd
I
2
3
5
6
8
7
4
@
@
to
3rd
Failure
tllchJllgC
gear
from
1
1
1
2
3
5
6
8
7
4
@
@
@
to
2ud
Too
high
a
gear
change
poinl
from
I
sC
to
2nd
from
2nd
to
1
2
3
5
6
4
1
3rd
Gear
change
directly
from
lsl
to
2
4
3
1
@
@
rd
occurs
AT
54
Page 377 of 537
![DATSUN PICK-UP 1977 Service Manual
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
th DATSUN PICK-UP 1977 Service Manual
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
th](/img/56/56909/w960_56909-376.png)
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
Page 378 of 537
![DATSUN PICK-UP 1977 Service Manual
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
Adjusti DATSUN PICK-UP 1977 Service Manual
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
Adjusti](/img/56/56909/w960_56909-377.png)
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
Page 397 of 537
![DATSUN PICK-UP 1977 Service Manual
Condition
Excessive
pedal
travel
Spongy
pedal
Poor
braking
effect
Brakes
drag
Brake
Syst
em
TROUBLE
DIAGNOSES
AND
CORRECTIONS
Probable
cause
Low
brake
1uid
level
or
empty
ma DATSUN PICK-UP 1977 Service Manual
Condition
Excessive
pedal
travel
Spongy
pedal
Poor
braking
effect
Brakes
drag
Brake
Syst
em
TROUBLE
DIAGNOSES
AND
CORRECTIONS
Probable
cause
Low
brake
1uid
level
or
empty
ma](/img/56/56909/w960_56909-396.png)
Condition
Excessive
pedal
travel
Spongy
pedal
Poor
braking
effect
Brakes
drag
Brake
Syst
em
TROUBLE
DIAGNOSES
AND
CORRECTIONS
Probable
cause
Low
brake
1uid
level
or
empty
master
cylinder
reservoir
Leakage
in
master
cylinder
Deteriorated
check
valve
Air
in
system
Faulty
brake
adjustment
Low
1uid
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
Distorted
brake
shoes
or
excessively
worn
or
cracked
brake
drum
Soft
or
swollen
caliper
seals
Use
of
a
brake
1uid
with
too
low
boiling
point
Fluid
leakage
in
brake
lines
Low
brake
1uid
level
or
empty
master
cylinder
reservoir
Air
in
brake
lines
Excessive
shoe
ta
drum
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
Binding
mechanical
linkage
at
brake
pedal
and
shoes
Clogged
brake
lines
Incorrect
adjustment
of
wheel
bearings
Improper
shoe
t
drum
clearance
Weak
shoe
return
springs
No
free
travel
in
brake
shoe
return
BR
22
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
Top
with
1uid
and
inspect
for
leakage
Correct
as
necessary
Adjust
shoe
to
drum
clearance
Inspect
aut
adjuster
operation
Clean
and
bleed
system
Replace
hose
and
bleed
system
Replace
faulty
parts
Drain
hydraulic
system
flush
with
alcohol
and
replace
all
seals
Replace
with
specified
brake
1uid
and
bleed
system
Check
master
cylinder
pIpIng
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
Free
up
as
required
Check
and
clean
Adjust
or
repair
Adjust
Replace
Adjust
pedal
height
Page 398 of 537
![DATSUN PICK-UP 1977 Service Manual
Condition
Brake
chatters
Brake
squeals
Pedal
pulsates
Brakes
fade
Brakes
drag
Unbalanced
brakes
Brake
System
Probable
cause
Groove
or
out
of
round
brake
drum
Loose
or
bent
DATSUN PICK-UP 1977 Service Manual
Condition
Brake
chatters
Brake
squeals
Pedal
pulsates
Brakes
fade
Brakes
drag
Unbalanced
brakes
Brake
System
Probable
cause
Groove
or
out
of
round
brake
drum
Loose
or
bent](/img/56/56909/w960_56909-397.png)
Condition
Brake
chatters
Brake
squeals
Pedal
pulsates
Brakes
fade
Brakes
drag
Unbalanced
brakes
Brake
System
Probable
cause
Groove
or
out
of
round
brake
drum
Loose
or
bent
brake
disc
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
Brake
fluid
has
too
low
boiling
point
Use
of
improper
linings
or
brake
linings
are
contaminated
Brake
drums
are
out
of
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
Hand
brake
will
not
return
Clogged
master
cylinder
return
port
Improper
tire
inflation
Improper
adjustment
of
shoe
to
drum
clear
anee
Grease
oil
mud
or
water
on
linings
or
pads
Mud
in
brake
drum
Deterioration
of
linings
or
pads
Excessive
wear
of
linings
or
pads
BR
23
Corrective
action
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
eliminate
glaze
If
it
doesn
t
replace
linings
Turn
drum
or
replace
as
necessary
Drain
and
fill
system
with
approved
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
Check
and
repair
Clean
Inflate
to
correct
pressure
Readjust
Clean
brake
mechanism
and
check
for
cause
of
problem
Replace
linings
or
pads
Clean
Replace
Replace