NISSAN 300ZX 1984 Z31 Heather And Air Conditioner Owner's Manual

PIPING, COMPRESSOR MOUNTING AND F.I.C.D.
Refrigerant Lines
10 20110-20.7-14)
Safety valve
Lm 20- 29 (2 0 - 30.14 - 221
m 14 - 18 I1 4.1 8,lO - 131
20 - 29 Low-prerrure (S”Ctl0”)
fYm 1 (20 30.14- service valve
25 -34 (2 5 - 35,18 -251
m N m lkg-m, ft-lb)
SHA246B 0 10-20 I1 0-20.7. 14)J
Compressor Mounting
h
5-7(05 07.36-511i
[91 19-25 I1 9- 25.14.18)
*Adjurting bar
PJ) 36 -49 I3 7.5 0,27.361
(91 19 -25 (1 9.2 5,14.18)
N rn (kg-m, ft-lbl (91 19-2511
Non-turbocharged model
SHA247B
HA-21
>
36.49 I3 7.50.27 - 361 ,
9 - 25.14- 181

PIPING, COMPRESSOR MOUNTING AND F.I.C.D.
Idle Speed Adju
FAST IDLE CONTROL DEVICE (F.1.C.D )
1
2
Run engine until it reaches operating tempera-
ture.
With air conditioning system
OFF (when com-
pressor
is not operating), make sure that engine
is at correct idle speed
3 With air conditioning system ON (Recircula-
tion switch
at "RECIRC" position, fan control
lever
at "HI" position), make sure that com-
pressor and
F I C D solenoid valve are func-
tioning properly
For non-turbocharged model,
set idle speed at
the specified value
For turbocharged model, make sure that idle
speed is at the specified value (Nonadjustable)
4
Non-turbocharged model
F I C D socket pin 0
solenoid valve
Turbocharged model
solenoid valve
SHA248B
ng and Checking
ENGINE IDLING SPEED
NO"-
model
Turbocharged
model Tranrmission turbocharged
When AIC 86 OFF
MIT rpm 650-750 650 - 750
650.750 600.700 AIT rpm at "0" range at "D" range
When AIC IS ON
MIT rpm 750-850 750 - 850
750.850 750.850 AIT rpm at "D" range at "0" range
HA-22

COMPRESSOR OIL--For MJS170
Checking and Adjusting
The oil used to lubricate the compressor is circulat-
ing with the refrigerant
Whenever replacing any component of the system
of
a large amount of gas leakage occurs, add oil to
maintain the original amount
of oil
Total amount of oil in the system:
150 mP (5.1 US fl 02, 5.3 Imp fl 02)
KV994A9690
KV992C50822 /
i;(V994A9690 SHAO17A
1
2
3
Connect oil separator KV994A9690 between
compressor discharge
side and condenser
Evacuate and charge the system
Operate compressor
at engine idling with air
conditioner
set for maximum cooling and high
fan speed
4 Stop compressor operation after 10 minutes
Never allow engine speed to exceed idling speed
CAUTION.
Do not continue compressor operation for more
than 10 minutes
5 Disconnect oil separator and connect refriger-
ant line
to original positions
6 Disconnect low flexible hose from compressor
suction
valve
7 Add new oil from compressor suction port
Amount of oil to be added:
120 mP (4.1 US fl oz,4.2 Imp fl 02)
Low pressure ride
SHA702
0 Oil remains unremoved in the system about 30
mP (1.0 US fl 02, 1 1 Imp fl 02).
8 After adding oil, rotate compressor clutch by
hand 5 to 10 turns
9 Connect refrigerant line and evacuate and
charge system
10 Conduct leak
test and performance test
11 Gradually loosen drain cap of oil separator to
release residual pressure Remove cap and drain
Oil
12 To prevent formation of rust and intrusion of
moisture or dust, perform the following before
placing oil separator kit into storage
1) Cap each opening of flexible hose and double
union securely
2) Cap oil separator, evacuate it from service
valve, and charge refrigerant
HA-23

COMPRESSOR OIL-For MJS170
Condition Amount of oil to be added mP IUS fl 02. Imp fl 02)
Replacement of compressor
Replacement of evaporator
Replacement
of receiver drver (liquid tank)
There is no sign of oil leakage
from condenser
1 Remove all oil from new and old compressors *
2 Charge new compressor with the same amount of
oil as was in the old compressor
80 (2 7,2 8)
Oil need not be added
Oil need not be added
Replacement Of ‘Ondenser There are evidences of a large
amount of
oil leakage from
condenser 60 (2 0.2 1)
There is no sign of oil leakage
There are evidences of a large
amount of
oil leakage 70 (2 4, 2 5) hose or pipe
Oil need not be added
There is no sign of oil leakage
There are evidences
of a large
amount
of oil leakage
Gas leakage
* Remove compressor oil as follows
1. With the compressor upside down, completely
drain the
oil through the suction port (from
the embossed letter
“s” mark side)
Oil need not be added
70 I2 4, 2 5)
2 When the oil stops flowing out, rotate the
clutch hub
two or three times to completely
drain the
oil
HA-24

COMPRESSOR-Model MJS170
HA-25,

COMPRESSOR-Model MJS170
Leak Test
EVACUATE AND CONDUCT LEAK TEST
7 KV994C1552
SHA907A
Clutch Replacement
When removing shaft nut, hold clutch hub with
Tool
Tool No.: KV99412302 (J24878-1)
Using Tool KV994C5780, clutch hub can be
removed easily

SHA268A
When assembling clutch hub, adjust hub-to-
pulley clearance with shims
SHA272A
SHA908A
BREAK-IN OPERATION
When replacing compressor clutch assembly, do
not forget break-in operation, accomplished by
engaging and disengaging the clutch about thirty
times Break-in operation
raises the level of trans-
mitted torque
HA-26

COMPRESSOR-Model MJS170
Shaft Seal Replacement
Before disassembling, be sure to measure the
amount of
oil
After assembling, charge with the same amount
of new oil
When removing seal seat
Apply pressure with refrigerant
KV994C15527
SHA033A
SHA274A
0 With Tool KV994C1 143, depress carbon seal
and hook the case of shaft seal
yKV994C1143
0 When installing shaft seal
1) Cap Tool KV994C5784 to the top end of corn-
pressor shaft
2) Using Tool KV994C1 143, insert shaft seal with
shaft
seal case and shaft cutout aligned
Apply force to turn the
seal somewhat to the
left and right insure that shaft seal seats prop-
erly in the shaft cutout
AC037
HA-27

COMPRESSOR-Model MJS170
Valve Re
Using Tool KV99412330, remove rear cover
yKV9941 2330
SHAO38A
Using Tool KV994C5785, remove rear cylinder
head
SHA909A
When assembling
1) Front cover must be installed so that the cut-
out portions of front cover and
shell are
aligned
For this purpose, install front cover on cylinder
head
so that angle between threaded hole in
front cover and low pressure side refrtgerant
passage in cylinder head
is about 60"
acement
k
Refrigerant parrage
SHA276A
HA-28

COMPRESSOR-Model MJS170
-Valve Replacement (Cont’d)-
2) When installing shell on cylinder, adjust post-
tion
of shell so that suction inlet of shell opens
in the same direction
as suction slot of cylinder
assembly
Then, make sure swash plate is
visible in suction inlet by removing suction
valve
Refrigeranr parsage (low presure sidel
SHA277A
HA-29

A/C ELECTRICAL CIRCUIT (Manual)
Schematic
I, AYlllWfB 1 - tl I' SHA249B
HA-30