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

A/C ELECTRICAL CIRCUIT (Manual)
Wiring Diagram
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HA-31

A/C ELECTRICAL COMPONENTS (Manual)
Time while applying voltage
(12V) to the terminals
between @and
@ (Sed
Inspc
Resistance between
@and
@
622)
SUPER HEAT SWITCH
a Dip the temperature sensor of the super heat
switch in
a container filled with cold water and
increase the temperature of the water The
switch should turn
"ON"
Do not allow the switch to get into water.
Wipe water from temperature sensor section
after checking
it
NOTICE
a
a
Super heat s.wlch
Thermometer
Ohm range __ - - ._ .- - -- .. . . ".
' ' ' ' Super hear switch Below 16'C 161°F) OFF Above approximately 27 5-C (82°F) ON
hb
SHA251B
More than 175 Less than 400
Less than 105 I co
SHA252B
VACUUM TANK
To intake manifold TO As To heater t,,t unit (An room) To warer cock
To vacuum pump
@ Magnet valve
Check valve (One way 1 )
SHAZ53B
Solenoid valve check for water cock
SHA254B
HA-32

A/C ELECTRICAL COMPONENTS (Manual)
Inspection (Cont'd)
Applied voltage to
solenoid (V)
0
1 Disconnect vacuum hose @
2 Disconnect vacuum hose 3 and connect hose
@ instead Suck in through hose @ to con-
firm that
air does not flow through the hose
and that check
valve is closed
While sucking vacuum hose
0, change voltage
to solenoid to check for openclose operation
of solenoid valve
3 ~~
Operation of solenoid
valve
Close
12 1 Open ~ ~~ ~
Pressure
switch check for turbocharged model
I Pressure I Resistance In1 I
Atmospheric
presswe
Vacuum pressure
more than 46 7 kPa 1350 mmHg, 13 78 mHg1
SHAZ55E
1. Disconnect vacuum hose @ from the terminal
and connect
a vacuum handy pump with the
same terminal
2. Check pressure switch using a vacuum handy
pump.
VACUUM PUMP MOTOR
1 Turn ignition switch "OFF" Disconnect
vacuum hose
@ (Refer to "Pressure Switch
Check") from vacuum tank and connect
it
again
2 Make sure air conditioner switch is "OFF"
3 Turn ignition switch "ON" (Do not start the
engine)
4 Push cruise control main switch to make sure
vacuum pump starts. (A sound should
be heard
from the pump
)
5 The vacuum pump is operating properly if it
stops within 20 seconds after it has started
6 If it fails to stop within 20 seconds, and
vacuum hoses are in good order, it is malfunc-
tioning
SOLENOID VALVE
Perlorm operational check, referring to the "Table
of operation of solenoid valve in Air Flow (page
HA-3) and Wiring Diagram (page HA-8 or HA-31)
HA-33

LOCATION OF A/C ELECTRICAL COMPONENTS
LSolenoid valve bracket
ACC relay
Condenser
,-Condenser fan motor
SHAZ56B
HA-34

SERVICE DATA AND SPECIFICATIONS (S. D. S.)
General Specifications
COMPRESSOR
Model MJS170
Type Swash plate
Displacement
cm' lcu mllrev 170 110371
Cvllnder bore x stroke mm linl 40 0 x 22 6 I1 57 x 0 891
Clockwse
(viewed
from drive end1 Direcrion of rotafion
Type of driving belt HA type [Cogged belt1
LUBRICATING OIL
Model MJSl70
Type SUNISO 5GS
Capacitv
mP IUS fl OT, Imp fl OLI
Amount Of 011 in the system
Residual 011 level in the
operation and draining
0811
150 15 1.5 31
ryrrem (After 011 return 120141.421
REFRIGERANT
Type R-12
Capacity kg IIbI 09-1 1120-241
ENGINE IDLING SPEED
Non-
model
Turbocharged
model Traosmt6iton turbocharged
When AJC IS OFF MIT rpm 650 750 650 - 750
650 - 750 600.700
'pm at "D', range at "D" range
When AIC 81 ON MIT rpm 750-850 750 - 850
750.850 750.850
'IT at "D" range at "D" range
--Inspection and Adjustment -
COMPRESSOR
Model MJS170
0 5 -0 8 I0020 -00311 Clutch hub to pulley clearance mm lml ~~
BELT
TENSION
Belt deflection I [Apploed Pressure 1s 98 N I10 kg, 22 Ibll
0 4331 0 3541
SHA252B
HA-35

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Tightening Torque
COMPRESSOR INSTALLATION
Compressor bracket to 30 40 3 1 .4 1 22 30
cylinder block
Compressor to compressor 30 40 3141 2230
bracket
Compressor shafl nut 19 21 19-21 14 15
Compressor rear cover 19 21 1921 1415
fixing bolt
REFRIGERANT LINE
When connecting lines made of different material, basically use the lower tightening torque of the two ~~
Union
type (pipe to pipe) Material
Pipe 0 D
mm (in) Steel or copper Aluminum
Nm kg m ft Ib Nm kgm ft-lb ro
6 11/41 10 20 10 20 7 14 - - -
8 15/16) 15-25 15-25 11 18 10 20 10-20 7 14
10 13/81 15 25 15-25 11 18 10 20 10 20 7 14
12 11/21 20 29 20-30 14 22 15 25 15-25 11 18
16 15/81 25 34 25-35 18-25 20-29 20 30 14 22
SHA669A 19 13/4) 25-34 25-35 18 25 20-29 20 30 14-22
Union type (hose to hose) Malerial
Pipe 0 D rnm Iin) Steel or copper Aluminum
Nm kg-m fl-lb Nm kg m ft-lb
6 11/41 10-20 10-20 7-14 - - -
8 15/161 15-25 15-25 11-18 10-20 10 20 7 14
10 13/81 15 25 15-25 11-18 10-20 10 20 7 14
12 11/21 2534 25-35 18-25 20-29 2030 1422
SHA670A I5I8) 25-34 25-35 18-25 20 29 20-30 14-22
HA-36

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Tightening Torque (Cont'd)
Union type (hose to pipel
a Use tightening torcue for flexible hose
SHA671A
Plate type Bolt tYlX Tightening torque
Bolt Nominal Pitch diameter Nm kg-m ft-lb mm (in1 mm lini Grade 112e
M6 6 0 10 2361 1 0 10 0391 3 -4 03-04 22 29
4T M8 80103151 125100492) 8-11 08-11 58 80
M10 10 0 1.3 3941 1 5 IO 0591 16 22 1622 1216
M6 6 0 IO 2361 1 0 IO 0391 6 - 7 06 07 43-51
7T M8 80 10 3151 1 25 I004921 14 18 14-18 1013
M10 100103941 15100591 25 35 26-36 19-26
.3
HA-37'

SPECIAL SERVICE TOOLS
Special tool or a commercial equivalent
Tool number
(Kent-Moore
No )
Tool name
KV99412302
(J24878-1)'
Clutch hub wrench
KV994C5780
(-1
Clutch hub puller
KV994C1143
(-1
Shaft seal remover and
installer
KV994C5784
( - 1.
Shaft seal pilot
KV994 12330
( - )*
Allen socket
KV994C5785
Cylinder head remover
( - )"
KV994A9690
Oil separator kit
(&)
KV992C5079
(-1
0 KV992C5081
(-1
Adapter connector A -
@ KV992C5082
(-)
Adapter connector B
KV994C1552
(-1
Charge nozzle
Tool
0
Tool number
(Kent-Moore
No )
Tool name
KV994C4548
(-)
Blind cover set
0 KV994C4531
(-)
Blind cover
@ KV994C4532
(-)
Gasket
@ KV994C4533
(-1
Gasket (Useless)
@ KV994C4534
(-)
Gasket (Useless)
@ KV994C4559
(-)
Bolt
Tool
HA-38