MAINTENANCE
Replace
any
wiring
harness
which
is
cracked
deteriorated
or
poorly
in
sulated
Always
replace
wire
with
those
of
the
same
diameter
Do
not
use
wire
of
smaller
diameter
Where
necessary
securely
retain
wire
harnesses
with
clips
or
tapes
so
that
they
will
not
be
frayed
or
worn
by
vibration
Notes
a
Repair
or
replace
any
electrical
part
which
is
questionable
or
likely
to
cause
a
short
circuit
When
disconnecting
battery
cables
always
disconnect
ground
cable
be
fore
positive
cable
Clean
battery
and
terminals
before
connecting
cables
then
connect
positive
cable
and
ground
cable
in
that
order
Apply
a
coat
of
grease
to
terminals
to
prevent
rust
formation
b
Do
not
attempt
to
conduct
a
con
tinuity
test
with
a
screwdriver
or
service
tools
always
use
test
lead
wires
c
Do
not
ground
terminals
when
circuits
are
open
or
unloaded
always
use
a
test
lamp
12V
3W
or
circuit
tester
as
a
load
MAIN
RELAY
Removal
and
Installation
The
main
relay
is
attached
to
the
cooling
unit
I
Disconnect
battery
ground
cable
2
Disconnect
main
relay
lead
wires
at
connector
3
Remove
cooling
unit
assembly
Refer
to
Removal
and
Installation
under
Cooling
Unit
4
Remove
the
screw
securing
main
relay
to
cooling
unit
and
detach
main
relay
5
To
install
main
relay
reverse
the
order
of
removal
Inspection
To
check
continuity
in
relay
circuit
use
a
test
lamp
or
an
ohm
meter
Continuity
between
points
3
and
4
should
exist
Air
Conditioning
When
a
12
volt
d
c
is
applied
across
points
3
and
4
continuity
between
points
I
and
2
should
also
exist
CD
00
COMPRESSOR
RELAY
Removal
and
installation
Disconnect
compressor
relay
lead
wires
at
connector
2
Remove
two
screws
securing
com
pressor
relay
to
receiver
dryer
and
detach
compressor
relay
3
To
install
compressor
relay
reo
verse
the
order
of
removal
@
I
ul
CDe
JOO
ID
IDe
@e
L
AC465
Fig
AC
42
Main
relay
Inspection
Using
a
test
lamp
or
an
ohmmeter
make
sure
that
compressor
relay
con
tacts
open
and
close
con
tinuously
Continuity
always
exists
between
points
3
and
4
When
current
flows
through
points
3
and
4
points
1
and
2
close
This
causes
current
to
flow
through
1
and
2
FAN
SWITCH
Removal
and
installation
1
Disconnect
battery
ground
cable
2
Remove
screws
securing
console
box
Withdraw
console
box
forward
and
disconnect
lead
wire
connector
3
Detach
switch
knob
4
From
rear
side
of
console
box
remove
screws
securing
switch
and
remove
switch
5
To
install
fan
switch
reverse
the
order
of
removal
AC
31
i
t
v
J
AC489
Fig
A
C
43
Compressor
relay
AC771
Fif
AC
44
Removing
fan
switch
GENERAL
DESCRI
PTION
Special
Tools
play
very
important
role
in
the
maintenance
of
vehicles
These
are
essential
to
the
safe
accu
rate
and
speedy
servicing
The
working
times
listed
in
the
col
umn
under
FLAT
RATE
TIME
in
FLAT
RATE
SCHEDULE
are
com
puted
based
on
the
use
of
Special
Tools
The
identification
code
of
mainte
nance
tools
is
made
up
of
2
alpha
betical
letters
and
8
digital
figures
The
heading
two
letters
roughly
classify
tools
or
equipment
as
fol
lows
STOOOOOOOO
KVOOOOOOOO
Special
Tool
Special
Tool
Recently
established
Engine
Overhauling
Machine
General
Gauge
Hand
Tool
EMOOOOOOOO
GGOOOOOOOO
HTOOOOOOOO
HOW
TO
READ
SPECIAL
TOOL
LIST
APPLIED
VEHICLE
OR
UNIT
In
this
column
word
All
is
given
for
tools
applicable
to
all
vehicle
mod
els
and
unit
types
treated
in
this
manu
al
for
tools
applicable
only
to
particu
lar
models
or
units
those
vehicle
models
or
unit
types
are
indicated
NEWLY
ADDED
X
put
in
this
column
shows
newly
added
tools
Service
Equipment
SERVICE
EQUIPMENT
CLASS
Indicated
in
this
column
are
classi
fication
ftg1ll
es
in
accordance
with
Classification
of
Speciai
Tool
REMARKS
As
regards
special
tools
which
are
also
applicable
to
models
other
than
those
dealt
ith
U
this
m
inual
this
coluITUl
names
those
other
models
CLASSIFICATION
OF
SPECIAL
TOOL
I
Inspection
and
minor
repairs
11
General
disassembly
and
assembly
Ill
Special
disassembly
and
assembly
A
Important
a
Exclusive
with
no
alternative
b
Parts
will
be
damaged
if
repaired
without
special
tool
c
Gauges
B
General
To
facilitate
servicing
I
Inspection
and
minor
repairs
a
Inspection
and
maintenance
b
Unit
replacement
c
Minor
unit
disassembly
SPECIAL
TOOL
SET
See
attached
tool
list
The
set
is
available
for
new
and
other
dealers
who
must
go
through
initial
preparation
SET
77
620NA
KV00102000
This
set
is
designed
for
the
chassis
and
body
of
the
620
models
without
regard
to
their
destination
SE
2
Classification
Important
General
2
3
4
5
6
11
General
disassembly
and
assembly
General
disassembly
such
as
engine
transmission
and
differential
111
Special
disassembly
and
assembly
a
Disassembly
of
exclusive
parts
such
as
automatic
transmission
and
electrical
accessories
b
Special
work
such
as
boring
and
welding
c
Work
very
rarely
required
SET
3N71B
KV0010l000
This
set
is
designed
for
use
on
the
3N71B
automatic
transmission
It
con
sists
of
the
same
service
tools
as
those
previously
available
separately
