belt DATSUN 210 1979 User Guide

u

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O
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MAX
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1
I

I

11

1

i

MINij

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f

G

p

rl

MAX
ii
i

p

It

ot

MINi
II

L
Cooling
System

l

CQ074

Pressure
relief
valve

opens

f

C007S
Vacuum
valve

opens
INSPECTION

1
Check
the
amount
of

coolant
in
the

reservoir
tank
If
the
coolant
level

is

below

the
MIN
level
remove

the
re

servoirtank
ruler

cap
and
add

enough

oolant
to
reach
MAX

level

If
the
reservoir
tank
is

empty

check

the
coolantlevel
in
the

radiator

If
the
coolant
in

the
radiator
is

insuf

ficient

pour
it
into

radiator

up
to
the

radiator

cap
and

also

pour
it
into
the

reservoir

tank
until
MAX

level

If
the

coolant
in
the
reservoir
tank

d
ecreases

abnormally

rapid
check
for

a
leak
in
the

cooling

system

REMOVAL
AND

INSTALLATION

1
Reservoir
tank
is

only
inserted
to

reservoir
tank

bracket
and
can
be

easily
removed

To
install
reservoir
tank
reverse
the

order
of

remova

Fig
CO
12

Opefation
of
ReserVoir
Tank

SERVICE
DATA
AND

SPECIFICATIONS

Thermostat

Valve

opening

temperature
Oc
OF

Maximum

valve
lift

mmjOC
in
oF

Radiator

Type

Manual
transmission

Automatic
tralUJ1lission

Cap
relief

pressure
kg
cm2

psi

Testing
pressure

kg
cm
2

psi

Fan

Fan

belt
deflection

mm
in

cO

6
Temperate

type
Frigid
type
Tropical
type

82

180
88

190
76
5

I
70

8

95
8
loo
8
90

0
3
I

203
0
31j2
i
2

0
31
194

Corrugated
fm

type

Corrugated
fm

type
equipped
with
oil
cooler

0
9

I
3

1

6
23

8
to
12

0
31
to
0
47

Condition

Loss
of

water

Poor
circulation

Corrosion

Overheating

Over

cooling
Cooling
System

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Probable
cause

Damaged
radiator
seams

Leaks

at
heater
connections

or
plugs

Leak
at

water

temperature
gauge

Loose

joints

Damaged
cylinder
head

gasket

Cracked

cylinder
block

Cracked

cylinder
head

Loose

cylinder
head
bolts

Restriction
in

system

Insufficient
coolant

Inoperative
water

pump

Loose
fan
belt

Inoperative
thermostat

Excessive

impurity
in
water

Infrequent
flushing
and

draining
of

system

Inoperative
thermostat

Radiator
fin
choked
with
mud
chaff
etc

Incorrect

ignition
and
valve

timing

Dirty
oil
and

sludge
in

engine

Inoperative
water

pump

Inoperative
torque
coupling
or

tem

coupling

Loose
fan
belt

Restricted
radiator

Inaccurate

temperature
gauge

Impurity
in
water

Inoperative
thermostat

Inaccurate

temperature
gauge

CO
7
Corrective
action

Repair

Repair

Tighten

Tighten

Replace

Check

engine
oil
for

contamination
and
reml

as

necessary

Replace

Check

engine
oil
in

crankcase
for

mixing

with
water

by
pulling
oil

level

gauge

Replace

Tighten

Check
hoses
for

crimps
and
clear
the

system

of
rust
and

sludge
by
flushing
radiator

Replenish

Replace

Adjust

Replace

Use
soft
clean
water
rain

water
is
satis

factory

Cooling
system
should
be
drained
and
flush

ed

thoroughly
at
least
twice
a

year

Permanent
antifreeze

Ethylene
glycol
base

can
be

used

throughout
the

seasons
of
the

year
and

change

periodically
at

intervals

recommended

Replace

Clean
out
air

passage
thoroughly
by
using
air

pressure
from

engine
side
of
radiator

Adjust

Refill

Replace

Replace

Adjust

Flush

radiator

Replace

Use
soft
dean
water

Replace

Replace

Emission
Control

System

r

@
@
CD

L

I

1
Air

pump
drive
hub

5
V
ne

2

Housing
6
Carbon
shoe

3
Rotor

rins
7
Shoe

spri
ng

4

End
cover
8

Stripper

with
needle

bearing
9
Rotor
shaft

Anti
backfire
A
B
valve

This
valve
is
actuated

by
intake

manifold
vacuum
to

prevent
backfire

in
the

exhaust

system
at
the

initial

period
of
deceleration

At

this

period
the
mixture
in
the

intake
manifold

becomes
too
rich
to

ignite
and
burn
in

the
combustion

chamber
and

burns

easily
in

the
ex

haust

system
with

injected
air

in
the

exhaust
manifold

The
A

B
valve

provides
air
to
the

intake
manifold
to

make
the
air

fuel

mixture

leaner
and

prevents
backfire

To
in
take

manifold

vacuum

EC069

Fig
EC

15
A
B
Valve
10
Ball

bearing

11
Front

bearing
cOYer

12

Pulley

13

Pulley

for
air
conditioner

Check
valve

A

check
valve
is

located
in
the

air

pump
discharge
lines
The
valve

pre

vents
the

backflow
of
exhaust

gas

which
occurs
in

the

following
cases

I

When
the
air

pump
drive
belt

fails

2
When

relief
valve

spring
fails

1

11
rom

pump

1

Spring

2
Rubber
valve

3

Seat
SecondarY
air

4
J
Exhaust

gas

EC322

Fig
EC

16
Check
Valve

Air

gallery

The

secondary
air

fed
from
the
air

pump
goes

through
the
check
valve
to

the

air

gallery
in
the

cylinder
head
It

EC
lt
14
Inlet

cavity

15

Outlet
cavity

EC066A

Fig
EC
14
Air

Pump
two
vane

lype

is
then

distributed
to

each
exhaust

port
and

injected
near
the

exhaust

valve

0

iJl

Ai

gallery

2

Exhaust

port

3
Exhaust

manifold

EC316

Fig
EC

17
Air

Gallery

Air
pump
relief
valve

Non
California

models

The
air

pump
relief

valve
controls

the

injection
of

secondary
air
into

the

exhaust

system
when
the

engine
is

running
at

high
speed
under
a

heavily

loaded

condition
It

accomplishes
the

EC149A

Fig
EC

23

Removing
Air
Cleaner

Filter

Air

pump

1
Remove
air

hoses
from

air

pump

2
Remove
air

pump
pulley

3
Loosen
air

pump
adjusting
bar

mounting
bolts
and
air

pump
mount

ing
bolts
then
remove
air

pump
drive

belt

4
Air

pump
assembly
can
be
taken

out
from
bracket

5

Installation
is
in

the
reverse
se

quence
of
removal

Fig
EC
24

Removing
Air

Pump

Check

valve

1
Disconnect
air

hose
from
check

valve

2

Remove
check
valve
from

engine

cylinder
head

3

Installation
is
in

the
reverse
se

fluence
of
removal
Emission

Control

System

EC151A

Fig
EC
25

Removing
Check
Valve

A

B
valve

A
B
valve
is

located
at
the

rear
side

of
air

cleaner
Remove
air

hoses
and

vacuum
tube
A
B
valve
can
then
be

taken
out

EC152A

Fig
EC
26

Removing
A
B
Valve

Air

pump
relief
valve

Non
California
models

I

Loosen

clamp
of
air

hose
and

disconnect
air

hose
from
relief
valve

EC
13
2
Remove
screws

securing
relief

valve
to
air

cleaner
Relief

valve
can

then

be
taken

out
easily

3
Installation
is
in
the
reverse
se

quence
of

removal

EC153A

Fig
EC
27

Removing
Air

Pump

Relief
Valve

C
A
C
valve

California
models

C
A
C

valve
is
located
beneath
con

trol

device
bracket

Remove

clamps
and

disconnect

air

hoses
and
vacuum
tube

2

Remove
screws

securing
C
A

C

valve
Air
control
valve

can
then
be

taken
out

easily

3
Installation
is
in
the

reverse
se

quence
of
removal

EC154A

Fig
EC
28

Removing
C
A
C
Volvo

3
Check
air

injection
pump
belt

tension
and
adjust
to

specifications
if

necessary

4

Plug
up
air

discharging
hose

from

C
A
C
valve
California
models

y

o

EC144A

Fig
EC
44

Plugging
C
A

C
Value

Air

Discharging
Hose

California
model

S

Disconnect
air

supply
hose
at

check
valve

6
Insert

open
pipe
end
of
Air

Pump

Test

Gauge
Adapter
STl9870000
in

air

supply
hose

Clamp
hose

securely

to

adapter
to

prevent
it
from

blowing

out
Position
adapter
and
test

gauge
so

that
air
blast
emitted

through
drilled

pipe
plug
will
be

harmlessly
dissipated

7
Install
a
tachometer
on

engine

With
the

specified
engine
speed
ob

serye
air

pressure
A

produced
at
test

gauge

Air

pressure
A

More
than

100

mmHg
3
94

inHg

at
2
600

rpm

I

jff

100
m

Hg

f1

3
94

mHg

I

EC145A

Fig
EC
45

Testing
Air

Pump

8
If
air

pressure
does
not
meet

above

specifications
proceed
as

follows
Emission

Control

System

Non

California
models

1
Repeat
2

and
3
above

2
With

engine
speed
at
1
500

rpm

disconnect
tube

from

adapter
and

close
hole
of

test

gauge
with

finger
If

a

leaking
sound
is
heard

or

leaking
air

is
felt

by
finger
at
relief
valve
relief

valve
is

malfunctioning
Relief
valve

should
be

replaced
or

repaired

3
If
air

injection
pump
does

not

meet
minimum

requirement
of

pres

sure
test
it
should
be

repaired

California
models

Disassemble
the
air

pump
and
re

pair
it

Check
valve

Warm

up
engine
thoroughiy

2
Disconnect

hose

leading
to

check

valve
from
air

hose
connector

3
Check
hose

opening
for

any
indi

cation
of
exhaust

gas
leaks
If
leaks

are

detected

replace
check
valve

4
Race

the

engine
lightly
at
about

2
000

rpm
and
then

return
it
to

idling
Visually
check
the
hose
for

any

indication
of
exhaust

gas
leaks

before

the

engine
returns
to

idling
speed
If

leaks
are
detected

replace
check
valve

EC146A

Fig
EC
46

Checking
Check
Valve

Air
pump
relief
valve

After

completing
inspection
of
air

pump
check
air

pump
relief

valve
in

the

following
steps

I
Disconnect
hoses

leading
to
check

valve
and
air
control
valve
from
air

hose

connector
and
install

blind
c

p

to
the
connector

2
With

engine
running
at
about

3
000

rpm
under

no
load

place
your

EG
7
hand
on
the
air
outlet
of
air

pump

relief
valve
to

check
for

discharged
air

If

no
air
is
felt

replace
the

air

pump

relief
valve

G

EC575

Fig
EC
47

Checking
Air

Pump

Relief
Valve

Anti
backfire
valve

A
B

valve

I
Warm

up
engine
thoroughly

2
Disconnect
hose
from
air

cleaner

and

place
a

finger
near
the

outlet

3
Run

engine
at
about
3

QOO
rpm

under
no

load
then

quickly
return
it

to

idling
If

you
feel
a

pull
or
suction

force
on

your
finger
the
anti
backfire

valve
is

functioning
normally
If

no

suction
is

felt

replace
the
anti
backfire

valve

EC768

Fig
EC
48

Chocking
Anti

backfire

Valve

C
A
C
valve

California
models

I

Make
sure
that

C
A
C

valve
vacu

um

hose
and
air

hose
are

not
cracked

2
Warm

up
engine
throughly

3
With

engine
at
idle

place
your

fmger
over

relief
hose

opening
to

check
for

presence
of
air

4

With

engine
idling
disconnect

vacuum
hose
at
C
A

C
valve

Then
make

sure
that
air
is

discharg

ed
from

C
A
C
valve

C

A
C
valve
is

functioning

properly

if
air
is

discharged
from
it

REMOVAL

1

Disconnect

battery

negative

cable

2

Disconnect
two

lead
wires
and

oonnector
from
alternator

3

Loosen

adjusting
bolt

4

Remove
alternator
drive

belt

5

Remove

parts
associated
with

alternator
from

engine

6
Remove
alternator

from
car

DISASSEMBLY

I
Remove

through
bolts

Separate

front
cover
with
rotor

from
rear
cover

with
stator

by
lightly

tapping
front

bracket
with
a

wooden
mallet

rnJ

J

i

EE525

Separating
Front

COI
T

Fig
EE

31

2

Place
rear
cover
side
of

rotor
in
a

vise

with
soft

jaw
and

remove

pulley

nuts
Then
remove

pulley
and
fan

from
rotor
shaft

3

Remove

setscrews
from

bearing

retainer
and

separate
rotor
from
front

EE526

Fig
EE
32

Removing

Pulley
and
Fan

tr

s

0
27

Fig
EE
33
Removing
Rotor
Engine
Electrical

System

4
Pull

rear

bearfug
off
rotor

assem

bly
with
a

bearing
puller
or

press

EE037

Fig
EE
34

Pressing
Out

Rear

Bearing

I

EO

Fig
EE

35
Pulling
Out
Rear

Bearing

5

When

removing
IC

regulator

only

proceed
as
follows

I

Using

soldering
iron

disconnect

wire

connecting
diode

set

plate
to

brush
at
brush

terminal

2

Remove

bolt

securing
diode
set

plate
to
rear
cover
side
face

3

Remove
nut

securing
battery

terminal
bolt

4

To
facilitate
removal

s1ighly
lift

stator

coil

together
with
diode
set

plate
from

re
r
cover
Then
remove

screw

connecting
diode
set

plate
with

brush

5

Separate
stator
coil
and
diode

together
with

rear
cover
and

remove

brush
and

IC

regulator

6
Disconnect
stator

coil
lead
wires

from
diode
terminals
with

a

soldering

iron

Remove

screws

securing
brush
re

move
stator
from

rear
cover

EE648

Fig
EE
36

Removing
Stator

Coil

EE
14
7

Disconnect
wire
from
diode
tor

minal
at
brush
terminal
with

soldering

iron

Remove

brush

assembly
with
IC

regulator
by
loosening
screws

8
Remove
diode

holder

by
loosen

ing
screws

acefii
li

E
E649

Fig
EE

37

Removing
Diode
Holder

INSPECTION
AND

REPAIR

ROTOR
INSPECTION

I

Continuity
test
of
rotor
coil

Apply
tester
between

slip

rings
of

rotor
If

there
is

no

continuity
field

coil
is

open

Replace
rotor

assembly

Fig
EE

38

Continuity
Test

of

Rotor
Coil

2

Ground
test
of
rotor
coil

Check

continuity
between

slip
ring

and

rotor
core
If

continuity
exists

replace
rotor

assembly
because
rotor

coil

or

slip
ring
may
be

grounded

EE532

Fig
EE
39
Te

ting
Rotor
Coil

for
Ground

Engine
Electrical

System

TROUBLE

DIAGNOSES
AND

CORRECTIONS

I

BATTERY

Battery
is
not

charged
correctly

I

Correctly
adjust
belt
tension
of
alternator

2

Complete
connections
in

charging
system

3

Securely
connect

battery
terminals

Lighting
Joadtest

I
Make

sure
that

electrolyte
level
is
correct

2
Crank

engine
for

three
seconds
with

ignition
system
open

3
Turn
on

headlight
low
beam
for
one
minute

and
then
measure

specific

gravity
of

each
cell
of

battery

Specific
gravity
of
each
cell
is

less

than
1

200

N50Z
or
1

220

NS70

1
When

specific
gravity
can
not
be

raised
above
1

200

by
charging

the

battery
is
run
down
Specific
gravity
of

some
cells
is

above
1
200

N50Z
or
1

220

NS70
but
others

show
lower

specific
gravity

Unbalance
is
within

0
05

Discharged

battery
Charge
it

and

repeat

lighting
lood
test

Unbalance
is
within
0
05

Batter
is

satisfactory

EE
J4
Specific
gravity
of
each

cell
is

above

1

200

N50Z
or
1

220
NS70

Unbalance
of

specific
gravity
be

tween
cells
exceeds
0
05

I

Battery
is

run
down

Unbalance
of

specific
gravity
be

tween
cells
exceeds
0

05

I

Battery
is

run
down

Engine
Electrical

System

III

ALTERNATOR

Including
voltage
regulator

Condition

No

output

Excessive

output

Low

output

Noisy
alternator
Probable
cause

Sticking
brushes

Dirty
brushes
and

slip
rings

Loose
connections

or
broken
leads

Open
stator

winding

Open
rotor

winding

Open
diodes

Shorted
diodes

Shorted
rotor

Shorted
stator

Ground
BAT

terminal

Broken
fan
belt

Voltage
regulator
breakdown

Poor
connection
of
alternator

S
terminal

Open
diode

Loose
or
worn
fan
belt

Slicking
brushes

Low

brush

spring
tension

Voltage
regulator
breakdown

Dirty

slip
ring

Partial
hort

ground
or

open
in

stator

winding

Partially
shorted
or

grounded
rotor

winding

Open
or

damaged
diode

Loose

mounting

Loose
drive

pulley

Broken
ball

bearing

Improperly
seated
brushes

EE

36
Corrective
action

Correct
or

replace
bru
hes
and
brush

springs

Clean

Retigliten
or

older
connection

Replace
leads
if

necessary

Repair
or

replace
stator

Replace
rotor

Replace

Replace

Replace
rotor

Replace

Replace
insulator

Replace

Check

regulator

operation
and

repair
or

replace
a

required

Correct

Replace

Retighten
or

replace

Correct
or

replace
brushes
and

springs
if

necessary

Replace
brush

spring

Check

regulator
operation
and

repair
or

replace
as

required

Clean

Replace
tator

Replace
rotor

Replace
diode

Retighten
bolts

Retighten

Replace

Seat

correctly

REMOVAL

It
is
much
easier

to
remove

engine

and
transmission

as
a
single
unit
than

to

remove
alone
After
removal

engine

can
be

separated
from
the
transmission

assembly

WARNING

a
Place
wheel
chocks
in
fronl

of

front

wheels
and
in

rear
of

rear

wheels

b
Be
sure
to
hoist

engine
in
a
safe

manner

c
You
should
not
remove

engine

until
exhaust

system
has
com

pletely
cooled
off

Otherwise

you
may
burn

your

self
and
or
fire

may
break

out
in

fuel
line

Note
Fender
coven
should
be

used

to

protect
car

body

1
Disconnect

battery
ground
cable

from

battery
terminal
and
fusible
link

at
wire

connector

2
Remove
hood

as
follows

CAUTION

Have
an
assistant

help
you
so
as
to

prevent

damage
to

body

I
Mark
hood

hinge
locations
on

hood
to
facilitate
reinstallation

2

Support
hood

by
ltand
and
re

move
bolts

securing
it

to
hood

hinge

being
careful
not
to
let
hood

slip
when

bolts
are

removed
See

Fig
ER
2

3
Remove
hood
from
hood

hinge

f

Il

I

BF133A

Fig
ER
2

Removing
Hood

Remove

under
cover

Drain

radiator
coolant
and

engine
3

4

oil

5

Disconnect

upper
and
lower
hoses

from
radiator
and
disconnect
oil

cooler
hoses
automatic
transmission

only

6
Remove
four
bolts

securing
radia
Engine
Removal
Installation

tor

to

body
and
detach
radiator
after

removing
radiator
shroud

7

Remove
air
cleaner

assembly

from
carburetor
as
follows

1
Remove

fresh
air
duct
from
air

cleaner

2
Remove
hot
air
duct
from
air

cleaner

3

Loosen
air
cleaner
band
bolt

4
Disconnect
air

cleaner
to
air

pump
hose

at
air
cleaner

5

Disconnect
air
cleaner

ta
rocker

cover
hose

at
rocker
cover

6
Disconnect
air

cleaner
to
A
B

valve
hose
at
air

cleaner

7
Disconnect
air
cleaner
to
related

vacuum
hoses
at
air

cleaner

8
Disconnect
accelerator
control

wire
from
carburetor

9
Disconnect

the

following
cables

wires

and
hoses

Wire

to
auto
choke
heater

Wire
to

throttle

opener
cut
solenoid

or

throttle
switch

Wire

to
fuel
cut
solenoid

Wire
to

vacuum
switching
valve

High
tension

cable
between

igni

tion
coil
and
distributor

Battery
cable
to
starter
motor

Wire
to
distributor

Wire

to
thermal
transmitter

Wire

to
alternator

Engine
ground
cable
oil

pressure

switch
and

engine
harness
No
2

See

Fig
ER
3

o

1
Ground
cable

2

Engine
harness
No

2

3
Oil

pressure
switch

Fig
ER

3
EA368

Disconnecting
Cable
and

Wire

Fuel
hose

at
fuel

pump
and
fuel

return

hose
at
connection

Air

pump
air

cleaner
hose

Carbon
canister
hoses

Heater
inlet
and
outlet
hoses
if

so

equipped

ER
3
Vacuum
hose
of

brake
booster
at

intake
manifold

Air
conditioner

equipped

model

10
Remove

compressor
belt

To

remove
loosen
idler

pulley
nut

and

adjusting
bolt

1
Remove
air

pump

2
Remove

compressor
retaining

bolts
and
move

compressor
toward

fender
to
facilitate
removal
of

engine

Nole
Never

discharge
gas
from
com

pressor
while
work
is

being

per

formed

II

Compressor

EA478

Fig
ER
4

Location

of
Air

Compressor

3
Disconnect
vacuum
hose
of
air

conditioner
from
connector
of
intake

manifold

4
Remove

F
i

C
D

actuator
from

bracket

II
Remove
clutch

operating
cylin

der
from
clutch

housing
manual
trans

mission

only

dJ

Tightening
torque

Clutch

operating
cylinder

E
A3

to
clutch

housing

3
1

to
4
1

kg

22
to

30
ft
lbl

Fig
ER
5

Removing
Clutch

Operating

Cylinder

INSTALLATION

Install
in
the

reverse
order

of
re

moval

observing
the

following

Note

When

inslal1ing
be
sure
to

check
thaI
electrical
harnesses

are

connected
ly

1
When

installing
first
secure
rear

engine
mounting
member
to

body

2
Refer
to

applicable
section
when

installing
and

adjusting
any
parts

Adjust
clutch

pedal
free
travel
Re

fer

to
Clutch
Pedal
Free
Travel

Section
CL
for
installation
and

adjustment

Adjust
accelerator
control

system

Refer
to

Engine
Control

System

Section
FE
for

adjustment

For

installation
of
air
conditioner

compressor
and
belt

adjustment

Refer
to
Idler

Pulley
and
Com

pressor
Drive
Belt

for

adjustment

of
belt
tension

3
When

installing
exhaust
front

tube
on
exhaust
manifold
be
sure
to

use
new

gasket

4

When

installing
hood

following

engine
installation
be
sure
that

it
is

properly
centered
and
that
hood

lock

operates
securely
Refer
to
Hood

See

tion
BF

for

adjustment
Engine
Removal
Installation

ENGINE
MOUNTING

INSULATOR

FRONT
INSULATOR

Removal

Disconnect

battery
ground
cable

2

Suspend
engine
with
wire

or

chain

3

Remove
front

engine
mounting

insulator

lower
and

upper
nuts
on

both
sides

4
Make

sure
that
wire

or
chain
used

to

suspend
engine
is

positioned

prqper

ly
so
that
no
load
is

applied
to

insulators
and
remove
nuts

complete

ly

5

Lift

up
engine
and

separate
in

sulators

from

engine
mounting
rack

ets

Inspection

If
there
is

damage
deterioration
or

separation
of
bounded
surface
re

place

Installation

Install
front
insulators
in

reverse

sequence
of
removal

noting
the
fol

lowing

1
Do
not
confuse

right
and

left

insulators
R

right
side
or

L

left
side
identification
mark
is

stamp

ed
on
each
insulator

2
Install
front
insulator
so
that

ER
5
position
pin
is

projected
upward

3

Tighten
the

bolts
and

nut
correct

ly
and

securely
See

Fig
ER
I

REAR

INSULATOR

Removal

l

Support
transmission

weight
with

ajack

2
Remove

nuts

securing
rear

engine

mounting
insulator
to

mounting
mem

ber

3
Remove

bolts

connecting
rear
en

gine
mounting
insulator
to
transmis

sion

reaf
extension

housing

4

Jack

up
the

transmission
a
little

and

remove
insulator

Inspection

If
there
is

damage
deterioration
or

separation
of

mating
surface

replace

Installation

Install
rear

engine
mounting
mem

ber
and

insulator
in

reverse
order

of

removal

noting
the

following

I

Install
insulator
in

place
so

that

direction
of
mounted

insulator
is

same

as
that
in

Fig
ER

2

Tighten
nuts
and

bolts

correctly

and

securely
As
for

tightening
torque

see

Fig
ER
l