Nissan 300zx Heater Air Condition HA 1987 Owner's Manual
AIR
CONDITIONER
-
SECTION
CONTENTS
GENERAL DESCRIPTION
AIR FLOW AND COMPONENT LAYOUT (Manual)
LOCATION OF VACUUM COMPONENTS
CONTROL..
HEATER ELECTRICAL CIRCUIT
DESCRIPTION -Air conditioner (Manual)
DISCHARGING, EVACUATING, CHARGING AND CHECKING
A/C PERFORMANCE TEST (Manual)
PRECAUTIONS FOR REFRIGERANT CONNECTION..
PIPING, COMPRESSOR MOUNTING AND F.1 C.D.
COMPRESSOR
COMPRESSOR -Model MJS170
A/C ELECTRICAL CIRCUIT (Manual)
A/C ELECTRICAL COMPONENTS (Manual)
LOCATION OF A/C ELECTRICAL COMPONENTS (Manual).
TROUBLE DIAGNOSES (Manual)
. . ...... .
OIL
-
For MJS170
,.....
.. . ...
.
.........
..
. . . . . ... . ......
.
. . , .
,
...
. . .
. . . . .
. . . . . . . . . . . . .
. . . . . .
.....
...
HA
.. . .
......
...
I
. . . . .
......
...
,
. . . . . .
I
,
. .. .. ..
HAHA- 3
HA- 5
..HA-
HA- 7
HA- 9
HAHA- 16
HA- 18
HA- 19
HA- 21
HA- 23
HA- 20
HA- 30
HA- 32
..
.
HA- 33
2
6
10
DESCRIPTION - Air conditioner (Auto)
AIR FLOW AND COMPONENT LAYOUT (Auto)
LOCATION OF VACUUM COMPONENTS (Auto)
A/C PERFORMANCE TEST (Auto)
A/C PERFORMANCE TEST (Auto)/PIPING (Auto)
A/C ELECTRICAL CIRCUIT (Auto)
A/C ELECTRICAL COMPONENTS (Auto)
LOCATION
SELF-DIAGNOSING SYSTEM OF TROUBLE (Auto)
TROUBLE DIAGNOSES (Auto)
SERVICE DATA AND SPECIFICATIONS
SPECIAL SERVICE TOOLS
OF
A/C ELECTRICAL COMPONENTS (Auto)
. . ... .
(S D S)
. . . . .
.
.
...
. . . . . . .
. . . .
,
.
,
. . . . . . .
.
.
,
..
.... .
. . . . . . .
.
. . .
.
.
.
. . .
HA- 65
HA-
85
HA- 87
HA- 88
HA- 89
HA- 90
HA-
94
HA- 95
HA- 98
HA-102
HA-131
HA-1
34
-
~
-
GENERAL DESCRIPTION
Continuously Variable
Air Flow Control
The fan control amplifier, which utilize transistor
circuits, continuously controls the
out by the blower, allowing for selection of the desired air flowrate The fan control amplifier
housed
ing plate
the
in the blower motor unit The heat-radiat-
of
the amplifier
air
flow to effectively cool the transistors
To
blower
relay
_._-
To
conrrol
~
unit
is
placed in the stream of
air
flow blown
BLOWER
1
is
MOTOR
AT
-Device for Distributing
to the Feet during "FACE
A
vacuum actuator
tion device to remove the hot air directed to the
floor area and distribute
ture to the driver's compartment. When the vacuum switch
(or. part of the cool
air conditioning systems) taken in the vehicle
bypassed to the shower duct on the driver's side
through the operation of the actuator
is
Five-way
turned
Center
is
used in the cool-air distribu-
the
"ON",
air
on models equipped with
duct
7
,-Ventilator bypass
Cool
Air
MODE"
optimum air tempera-
part of the outside air
duct,
-
is
FAN
CONTROL
AMPLIFIER
SHA2558
IDriver
oldel
-Vacuum
4
Vacuum
(Floor
switch
ventilator
Open-Close)
hose
HA-2
AIR
FLOW
AND COMPONENT
Air
Flow
LAYOUT
(Manual)
I
I
HA-3
SHA231B
AIR
FLOW AND COMPONENT LAYOUT
Component Layout
(Manual)
HA-4
SHA790B
LOCATION
OF
VACUUM COMPONENTS
HA-5
SHAZ338
CONTROL
Heater and Air Conditioner Control Removal
PROCEDURES
Remove each screw in the number order shown in the following illustration.
console
finwher
Radlolalr
conditioner
bracket
f
SHAZ340
HA-6
HEATER ELECTRICAL CIRCUIT
Schematic
POTENT10
BALANCE
RESISTOR
IF
TEMPERATURE
SETTING
POTENT10
~ ~~~
!z
z
3
0
a
+
z
8
BATTERY
L
BLOWER
MOTOR
2g5
y
FUSIBLE
LINK
RELAY
BLOWER
I
0
k
2
z
0
k
z
0
I
I
I
Fat
Far
For
ventilator door actuator
-
For defroster
-
D S V V
D S V
V
P
water
cock
intake actuator
door
actuator
(For air
mix
(For
air
mix
FAN
RHEOSTAT
SIV
8
S/V
2
SIV
door)
SIV
door)
SIV
SIV
I
4
5
6
7
HA-7
HEATER ELECTRICAL CIRCUIT
Wiring
Diagram
u>
c
<E
34
HA-8
20
-.
=r
0:
cu
SH
A8
178
DESCRIPTION-Air Conditioner (Manual)
Refrigeration Cycle
Condenset
Safety
valve
Discharger refrigerant to
atmosphere at pressures
above
appiox
1%
540
kPa
3.727
psi1
138
--
-
/w
Low-pressure switch
Turns
OFF
12
kg/cm'.
at pressures
28
psi1 cutting compressor power supply
kg/cm',
The valve cannot be reused
Receiver drier
below
kPa
'
Expansion
Delivers
evaporator to facilitate refrigerant
evaporation and
of refrlgeranl passmg the orbflce
valve
sprayed refrigerant to the
controls
the amount
Blower motor
J
SHA606B
HA-9
DISCHARGING, EVACUATING, CHARGING AND CHECKING
Precautions
WARNING.
Always be careful
come in contact with your skin.
Always wear
around
the
system
Keep refrigerant containers stored below 50°C
(122°F)
and never drop from
Work in well-ventilated
gas
evaporates quickly and breathing may be-
come difficult due to the lack of oxygen.
Keep refrigerant away from open flames because poisonous
burns.
Do
not
use
steam to clean surface of condenser
or evaporator.
compressed
air
Compressed air must never
dirty line Clean with refrigerant gas
Do
not
use
manifold gauge whose press point
shape
is
different Otherwise, insufficient
evacuating may occur
that
refrigerant does not
eye
protection when working
high
places
area
because refrigerant
gas
will be produced
Be
sure to
use
cold water or
be
used to clean
if
it
a
Slowly open the
ant If they
are
opened quickly, compressor oil will
also be discharged
To
low-pressure
service
valve
Discharging
valves
to discharge only refriger-
To
high
service
pressure
valve
i
SHA2408
NG
Do
not over-tighten service valve cap
Do
not allow refrigerant to rush out Other-
SHA979A
wise, compressor oil will be discharged along
with refrigerant
HA-IO
DISCHARGING, EVACUATING, CHARGING AND CHECKING
-Evacuating the System-Step one-
1
Start pump, then open both valves and run
pump for about 5 minutes
To
To
low-pressure
service
valve
Vacuum pump
2
When low gauge has reached approx.
(760
mmHg,
both valves of gauge and stop vacuum pump
Let
it
stand for 5 to
and confirm that the reading does not rise
29 92
inHg), completely close
10
minutes in this state
high-pressure
serwce
wive
SHA2418
101
3 kPa
--Charging-Step one
1
Evacuate refrigerant system
Refer to "Evacuating the SystemStep One".
2
Close manifold gauge valves securely and disconnect charging hose from vacuum pump
3
Purge air from center charging hose
1)
Connect center charging hose to refrigerant can
through can top
2)
Break seal of refrigerant can and purge air
Ciore
II
C
3
rzs
Close
a. The low-pressure gauge reads lower
(25
mmHg,
elevation. Perform evacuation according
following table.
Elevation
m
(ft)
0
(01
300
(1.0001
600
(2.0001
900 (3.000)
'
Values
show
The rate of ascension
b
should
inHg) in five minutes.
reading
be
less than
0.98
inHg) per
Vacuum
I
I
of
the
low
of
3.3
300
m
of
system'
kPa
(mmHg, mHg)
101 3 (760.29 92)
98 0 (735.28 941
94 6 (710.27 95)
91 3 (685.26 971
pressure gauge
the
lowpressure gauge
kPa
(25
mmHg,
by
3.3
(1.000
to
0.98
kPa
ft)
the
4
Charge refrigerant into system
WARNING:
Ensure
1
that
engine
I
Open high-pressure valve
charge refrigerant into system.
To
lowgrerrure
service
valve
is
off.
To
service
of
manifold gauge and
hjghpressure
valve
@
SHA2428
HA-I
RHAZ78
1
DISCHARGING, EVACUATING, CHARGING AND CHECKING
-Charging-Step one (Cont'd)-
CAUTION:
If charging liquefied refrigerant into the
with the can turned upside down
ing
time, charge refrigerant only through
to
reduce charg-
pressure (discharge) service valve. After charging,
the compressor should always
be
turned
times manually.
To
lowpressure
IerVlCe
valve
system
several
To
high-pressurt
service
valve
SHA244B
high-
Charging-Step two
Refer to "Charging step one" of Nos. 2 through
When refrigerant charging speed slows down,
4
close high-pressure valve of manifold gauge and
open low-pressure valve
charge
it
while running the compressor for
of charging
Run
at ldllng
lBelow
1,500
rpml
To
low-pressure
IelYlCe
Yalw
of
manifold gauge and
To
high-pressure
service
Valve
4.
ease
II
2)
When low-pressure gauge reading
(1
0
kglcml,
14
psi), completely close high-
is
98
kPa
pressure valve of manifold gauge and stop
charging
-Evacuating the System-Step two
1
Close manifold gauge valve securely and disconnect charging hose from refrigerant can
2
Connect center charging hose to vacuum pump
3.
Start pump, then open both
pump for about
20
minutes
valves
and run
4
Fan
lever,
@
Maximum
mode and temperature
cool
and speed
U
5
Start Engine - Air conditioning system
maximum temperature
speed Open low-pressure valve on gauge
with can
glass Charge
in
upright position,
IS
complete when sight glass
set,
maximum blower
and
monitor
dial
SUA2450
ON,
set,
sight
IS
clear
Cycling clutch systems will produce bubbles
sight glass
seconds after clutch engages
bubbles continue, and,
when
clutch engages. Therefore, allow
to
if
so,
add refrigerant to
determine
in
5
if
clear sight glass.
WARNING.
Never charge refrigerant through high-pressure side
(discharge side)
of system since
refrigerant back into refrigerant can and can
this
will force
may
explode.
SHA2418
HA-I
2
DISCHARGING, EVACUATING, CHARGING AND CHECKING
)
two
(Cont'd)
Charge refrigerant while controlling low-pres-
6
at
275
kPa
(2
8
sure gauge reading
psi) or
less
by turning in or out low-pressure
kg/cm2,
40
valve of manifold gauge
Be
sure
to
purge air from charging hose when
replacing can with
a
new one.
In low ambient conditions in order to reduce
charging time, warming of the refrigerant can will
increase internal pressure
CAUTION.
Do
not increase can temperature beyond
(
104"
F).
40°C
WARNING:
Do
not heat can directly. There
is
danger of
it
exploding.
7
Charge the specified amount of refrigerant into
system by weighing charged refrigerant with
scale
sure
Overcharging will cause discharge pres.
to
rise
Refrigerant amount:
0.9 - 1.1
The state of
be used for checking whether
charged refrigerant
charged refrigerant can
kg
(2.0.2.4
the
bubbles in sight glass should only
is
small
Ib)
the
amount of
or
not.
The amount
be
correctly judged by
means of discharge pressure
RHA504
of
Gas
burner
Immerse
to
for
about
a
short
in
water
40°C
tme
heated
1104'Fl
RHA556
8
After charging, be sure to install valve cap on
service valve
9
Confirm
checking with
When refrigerant charging
that
there
are
a
leak detector
no leaks in system by
is
performed with
charging cylinder, charging station, or automatic charging equipment, engine off, charge
only through high side, after specified refrigerant amount has entered the system, close high
pressure valve on gauge
turn to idle speed, operate AIC
set
Start
at
engine
maximum
temperature setting, high blower. Observe sight
glass to confirm complete charge.
Overcharging will result
in
increased high
pressures,
and reduced performance
a
re-
HA-I
3
DISCHARGING, EVACUATING, CHARGING AND CHECKING
Checking Refrigerant Level
CONDITION
Doorwindow
0
AlCswitch
Amount
Check item
Temperature of high
and
~n
sight
low
glass
pressure
pressure IlneB
State
01
refrigeranl
Open
ON
Almost
no
refrigerant
hlmort
no
difference be-
tween high pressure and
low
pressure ride
temperature
3ubbler flow continu
wily
Bubbles
isappear
!hka
mist will
'etrlgerant
and
something
flow
IS
nearly
will
when
gone
Insufficient
ligh pressure side
nd
low
pressure side
airly
cold
'he bubbler are seen
t
lntervak
econdr
ID
of 1 2
TEMP lever position Max COLD
FAN lever position
Check
sight
glass
after a lapse of about five
4
minutes
Suitable Too much refrigerant
warm
IS
Umort transparent
3ubbles may appear when
!wine speed
owered
rlo
clear difference
is
raised and
exists
:,om
No
bubbler
between
lhew
two
can
be
seen
condl-
AC256
Pressure
a.
of
system
Repa,,
The bubbles seen through the sight glass are
influenced by
itgh pressure side
iormally
;top comprsnor
nsdiately
the
ambient temperature Since
low
overall check
the bubbles are hard to show up
tively low temperatures below
is
possible
that
a slightly larger amount of refrigerant would be filled,
to the sight glass. Be
amount when
it
sure
exceeds
IS
ab-
om-
and conduct
in
compara-
20°C
(68°F).
if
supplied according
to recheck the
20°C
(68°F).
ACZ57
loth pressure
nd
low pressure rider are
lightly
:heck for
a~r
ar
Nnd
chaw swem
low
gar
required,
on
hogh
leakage re-
replmh
b.
it
In
HA-I
4
lath
low
md
mrmal
pressure^
on
pressure rider are
higher temperature
high
I
Both pressures
and
low
abnormally high
Otrcharge refrigerant from
service
pressure slde
the
bubbles are easy to
AC258
on
pressure rides
valve
of
low
hlgh
are
show up
When
the bubbles
the
refrigerant
screen
will
IS
normal
in
the receiver drler
appear even
In
this
IS
clogged,
if
the amount of
case, the outlet
side pipe of the receiver drier becomes considerably cold
DISCHARGING, EVACUATING, CHARGING AND CHECKING
Checking
ELECTRIC L EAK-DETECTOR
The leak detector
small amounts of halogen
In
order to use
manufacturer's manuals and perform the specified
maintenance and inspections
is a delicate device that detects
the
device properly, read the
SHA733A
Refrigerant
Leaks
UNION
PLATE TYPE
TYPE
RHA279
GENERAL PRECAUTIONS
LEAK DETECTOR
Place the probe on connection fitting and wait for
5
seconds or more
As to check cooling unit, wait for
more
WARNING:
FOR
HANDLING
10
seconds
or
As detector's meter moves even slightly, keep the
probe
as
still
as possible for one more minute
NOTICE.
When fixing single bolt flange, place
opposite side of the
fitting
the
probe on
MEASUREMENT STANDARD
If
any reaction
nominal sensitivity of
year, that portion found leaking must
The nominal sensitivity of the detector
determined under the assumption that
leaking
cordingly, the quantity of
can amount to five to ten times the indicated
value Generally speaking, leakage of
200
g
(5
insufficient cooling
Oil deposited during assembling must
off before inspection Refrigerant easily
dissolves in oil, and the presence of oil can
cause an error in measurement
This precaution
used vehicle for refrigerant leakage.
If any trace of oil
nection fittings,
refrigerant
gas
29
is
noted using a detector having
15
to 25 g
is
collected by the detector. Ac-
to
7
05
02)
is
important when checking
IS
noted
it
is
is
leaking
(0
53
to
be
repaired.
gas
actually leaking
of refrigerant can cause
at
and around con-
a
sure indication
0
be
RHA280
88
oz)/
all
150
wiped
that
a
IS
the
to
a
HA-I
5
TEST CONDITION
A/C
PERFORMANCE
Performance Chart
TEST
Testing must be performed
Vehicle location
Doors
Door window
Hood
TEMP
Mode switch position.
Recirculation switch position
FAN speed
Engine speed
Time required before starting testing after
air
TEST READING
Recirculating-to-discharge
Inside air (Recirculating air) at blower assembly inlet
Relative humidity
lever position
conditioner
%
starts
as
follows.
operating
air
temperature table
At
temperature
OC
(OF1
Indoors or in the shade (in a well ventilated place)
Closed
Open
Open
Max. COLD
*.
,f
(Face)
RECIRC ON
MAX
1,500
More than
HI
rpm
10
minutes
Discharge air temperature at center ventilator
'C
(OF)
50.60
60 - 70
I
I
-
20 (68)
25 (77)
30
(86)
35 (95)
40 (104)
20 (68)
25 (771
30
(86)
35 (951
40 (104)
I
I
45-50 (40-41)
86-95 (47-49)
127-141 (55-57)
16
7
-
18 6 (62 - 651
208-231 (69-74)
50-55 (41-42)
9 5.10 5 (49- 511
14 1 . 15 5 (57 - 60)
186.20 5 (65-69)
231 -254(74-781
HA-I
6
A/C PERFORMANCE TEST
Performance Chart (Cont‘d)
(Manual)
Ambient
a. The pressure will change in the following
air
temperature to compressor pressure table
Ambient air
Relative
humidity Air temperature
%
I
I
50.70
I
manner with changes
When blower speed
will drop
When
the
relative humidity
discharge pressure will drop
in
conditions:
is
low, discharge pressure
OC
(OF)
20 (68)
25(77)
40(104)
of
intake air
~
I I
I
is
low,
High pressure (Discharge side)
kPa (kg/crn’, psi)
853 . 1,049
(8
7.10 7, 124.152)
(106-130, 151 -185) (09-1.1. 13-16)
1,2164,491
-
15 2, 176 .216)
(12 4
-
1,393
(14 2.174, 202 -247)
1,579 - 1,932
(161 -197, 229-280)
b. The temperature will change in the following
1,706
manner with changes in conditions.
When the ambient
outlet air temperature will become low.
Low
I
I
air
pressure (Suction side)
kPa (kg/cm*, psi)
59 - 78
(06-08. 9-111
88.108
(11-14, 16-20)
(14-17, 20-24)
157 - 196
(1 6 - 2
temperature
0,
23 - 28)
is
low, the
HA-I
7
____
PRECAUTIONS FOR REFRIGERANT CONNECTION
WARNING:
Gradually loosen discharge side hose fitting, and
move
it
after remaining
pressure
has
been
released.
re-
When replacing or cleaning refrigerant cycle com-
ponents, observe the following
Do
not leave compressor on
down for more than
10
its
minutes,
side or upside
as
compressor
oil will enter low pressure chamber
When connecting tubes, be sure to use
a
torque
wrench
Torque
wrench
T
~~
NG
NG
-Inflated
OK
portton
SHA897A
S
H
A896A
After disconnecting tubes, plug
all
openings immediately to prevent entrance of dirt and moistu
re
Plug
SHA058
After inserting tube into union until O-ring
IS
no more visible, tighten nut to specified torque
n
"
Do not reuse used O-ring
When connecting tube, apply compressor oil to
Be
portions shown in illustration
careful not
to apply oil to threaded portion
O-ring must
closely attached
to
inflated por-
be
tion of tube
HA-I
..
After connecting line, conduct leak
make sure that there
tions When the
is
gas
leaking point
no leak from connec-
test
IS
found, dis-
connect that line and replace the O-ring Check
fit
for further use and then tighten connections
to
seal
seat for the specified torque
8
SHA898A
and
PIPING, COMPRESSOR MOUNTING
Refrigerant Lines
(01
10 20110-20.7 141
(01
10-20 I1 0-20.7 -141
I
120-30.14-2
AND
F.I.C.D.
(01
20 -29 l20.30,14 -22)
(01
14- 18 (1 4 - 18.10.131
Low
pressure ISuction)
service valve
High pressure (Discharge1
service valve
(01
14-18114-18.10-1
(01
5-7(05-07.36-511
(01
14- 17 I1 4-1 7,10-121
25
Compressor Mounting
-34
12 5 -3 5.18- 25)
(01
36 -49 I3 7
(01
N
m
-
50,27
(kg-m,
'.
ft-lb)
SHA2468
361
(01
N
m
Non-turbocharged
Ikg-m.
(01
36-49 13 7.50.27 -361
(01
19 -25
(1
ft-lbl
model
9 -2 5,14.181
HA-19
36.49
I3
7.5 0.27
-
361
SHA247B
PIPING, COMPRESSOR MOUNTING AND F.I.C.D.
Idle Speed Adju
FAST IDLE CONTROL DEVICE (F.I.C.D.)
1
Run engine until
ture.
2.
With
air
conditioning system OFF (when com-
pressor
is
With air conditioning system
3
is
not operating), make sure that engine
at
correct idle speed
tion switch
lever
at
"HI"
pressor and F
tioning properly
For non-turbocharged model,
4
the specified value
For turbocharged model, make sure that idle
speed
is
at
the specified value (Non-adjustable)
Non-turbocharged model
it
reaches operating tempera-
ON
(Recircula-
at
"RECIRC"
position, fan control
position), make sure that com-
I C D
solenoid valve
set
idle speed
are
func-
at
ng and Checking
ENGINE IDLING SPEED
Transmission turbocharged
When AIC
When A/C
IS
1s
OFF
ON
MIT
A/T
rDm
TDm
Refer to
150.850
150.850
at
"N"
NO".
model
MA
rmoe
Turbocharged
secfm
model
750.850
750
-
at
"N"
~
850
range
Turbocharged model
-
SHA2238
SHA248B
HA-20
COMPRESSOR
OIL-For
MJS170
Checking
The oil used to lubricate
ing
with the refrigerant.
Whenever replacing any component of the system
of
a
large amount of
maintain the original amount of oil.
Total amount
150
1KV994A9690
I-)
1
Connect oil separator KV994A9690 between
compressor discharge side and condenser
Evacuate and charge the system
2
Operate compressor
3
conditioner
fan speed
4 Stop compressor operation after
Never allow engine speed
CAUTION:
Do
not continue compressor operation for more
than 10 minutes
me
of
(5
set
the
compressor
gas
leakage occurs, add oil to
oil in the system:
1
US
fl
02.5.3 Imp
KV992C5082
{-I
at
engine idling with air
for maximum cooling and high
to
exceed idling speed.
is
fl
02)
10
minutes
circulat-
’
SHA017A
Adjusting
ai
8
9
10
11
12
1)
2)
Law
pressure
gh
pressure
ride
Oil remains unremoved
me
(1.0USfloz.1.1 Impfloz).
After adding oil, rotate compressor clutch by
hand
5
to
10
turns
Connect refrigerant line and evacuate and
charge system
Conduct leak
Gradually loosen drain cap of oil separator to
release residual pressure Remove cap and drain
Oil
test
in
the
and performance
ride
system
test
SHA702
about
30
To prevent formation of rust and intrusion of
moisture or dust, perform the following before
placing oil separator kit into storage
Cap each opening of flexible
union securely
Cap oil separator, evacuate
valve,
and charge refrigerant
hose
and double
it
from service
5
Disconnect oil separator and connect refrigerant line to original positions
6 Disconnect low flexible hose from compressor
suction
7
Add new oil from compressor suction port
Amount of oil to
120
valve
be
mi?
(4.1 USfl 02.4.2
added
Impfloz)
HA-21
IF
OIL SEPARATOR
Add
oil
in
accordance
Replacement of compressor
COMPRESSOR
Checking and Adjusting (Cont'd)
IS
NOT
AVAILABLE
with the
~~
Condition
table
below
OIL-For
Amount of
1
Remove
2
Charge new compressor with the same amount of
oil
as
MJS170
oil
to be added mP
all
oil
from new and old compressors
was in the old compressor
(US
fl
02.
Imp
fl
04
*
Replacement of evaporator
Replacement of receiver dryer (liquid tank)
There
is
no sign of
from condenser
Replacement
Replacement
hose or pipe
Gas leakage
Remove compressor
1.
With the compressor upside down, completely
drain the
the embossed letter
Of
'Ondenser
of
flexible
oil
as
oil
through the suction port (from
There are evidences
amount of
condenser
There
There are evidences
amount
I
There
There are evidences
amount of
follows
"s"
mark side).
oil
is
no sign
of
oil
is
no sign of
oil
leakage from
leakage
leakage
of
oil
of
oil
of
oil
of
leakage
a
large
leakage
a
large
leakage
a
large
I
I
I
I
2.
When the oil stops flowing out, rotate the
clutch hub
EO
(2
7,2
6)
Oil
need not be added
Oil
need not be added
60
(2 0.2
1)
Oil
need not be added
70
(2.4, 2.5)
Oil
need not be added
70
(2 4, 2
5)
two
or three times to completely
drain the oil
COMPRESSOR-Model
MJS170
-
'"
HA-23
SHA906A
COMPRESSOR-Model
Leak Test
EVACUATE AND CONDUCT LEAK TEST
KV994C1552
MJS170
e
When assembling clutch hub, adjust hub-to-
pulley clearance with shims.
SHA272A
Clutch Replacement
When removing shaft nut, hold clutch hub with
Tool.
Tool
NO.:
KV99412302
e
Using Tool, clutch hub can be removed easily.
(J24878-1)
SHA907A
SHA908A
BREAK-IN OPERATION
When replacing compressor clutch assembly, do
not forget break-in operation, accomplished by
engaging and disengaging
times Break-in operation raises the
mitted torque
the
clutch about thirty
level
of trans-
SHA268A
HA-24
COMPRESSOR-Model
Shaft Seal Replacement
MJS170
Before disassembling, be sure to measure the
amount of oil
After assembling, charge with the same amount
of new
oil.
&b
SHAO33A
With Tool, depress carbon seal and hook the
case
of shaft seal.
When removing
Apply pressure with refrigerant.
seal seat
KV994C15527
1
-
)
KV994C45d
I-)
SHA274A
When installing shaft seal
1
)
Cap Tool to the top end of compressor shaft
Tool
number:
2)
Using Tool, insert shaft seal with shaft seal
and shaft cutout aligned
Apply force to turn the seal somewhat to the
left and right Insure that shaft seal
erly in the shaft cutout.
Tool
number:
KV994C5784 (533212)
seats
KV994C1143 (J9392-01)
SHA275A
case
prop-
HA-25
AC037
COMPRESSOR-Model
MJS170
Using Tool, remove rear cover
-
KV99412330
Using
Tool,
remove rear cylinder head
Valve
I
Re
SHA038A
Refrigerant
(low
pressure1
parrage
When assembling
1)
Front cover must be installed
out portions of front cover and shell
aligned
For this purpose, install front cover on cylinder
head
so
that
angle
between threaded hole in
front cover and low pressure side refrigerant
passage in cylinder head
is
about
so
that the cut-
60"
SHA909A
are
-Suct,on
-
Slot
SHA2?6A
HA-26
COMPRESSOR-Model MJS170
-Valve Replacement (Cont’d)
2)
When installing shell on cylinder, adjust posi-
tion
of
shell
so
that suction inlet
in the same direction
as
suction slot of cylinder
assembly Then, make sure swash plate
visible in suction inlet by removing suction
valve
of
shell opens
IS
efrigerant
(low
pressure
passage
ride)
SHA277A
HA-27
HJllMS
A/C ELECTRICAL CIRCUIT
Schematic
DNIlHOll
(Manual)
A
I
P
1
I
HA-28
+"
SHA792B
A/C ELECTRICAL CIRCUIT
Wiring Diagram
(Manual)
HA-29
SHA7938
A/C ELECTRICAL COMPONENTS
(Manual)
VACUUM
switch
@
@
To
TANK
water
Magnet
Check
cock
valve
valve
To
manifold
(One
intake
To
way
TO
vacuum
4)
As
pump
Solenoid valve check for water cock
To
heater
lnsp
SHA2538
:ion
1
Disconnect vacuum hose
Disconnect vacuum hose @ and connect hose
2
@
instead. Suck in through hose
firm that
air
does not flow through the hose
and that check valve
3.
While sucking vacuum
to solenoid to check for openclose operation
of solenoid valve.
solenoid
Pressure switch check
(VI
12
for
@
@
IS
closed
hose
@,
change voltage
valve
Close
I
turbocharged model
Open
to con-
hitel
SHA254B
Pressure
Atmospheric
Vacuum
mors
I350
Disconnect vacuum hose @ from the terminal
1
and connect
pressure
than
46 7 kPa
mmHg,
13
78
inHg1
a
vacuum handy pump with the
Resistance
In1
same terminal.
2.
Check pressure switch using a vacuum handy
pump
HA-30
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