NISSAN 300ZX 1984 Z31 Engine Lubrication And Cooling System User Guide

COOLING SYSTEM -Thermostat-
Description (Bottom by-pass coolant flow)
- water OUtkt Coalant flow out
through water Outlet Thermostat
Open A few
r) close Much
SLC565
Disassembly and Assembly
CAUTION:
Drain coolant from drain cocks on cylinder block side and radiator.
Remove radiator shroud, cooling fan and water suction pipe securing bolt, then remove thermostat.
Always replace with new gasket.
After installation. run engine for
a few
and check for leaks. minutes,
SLC555 16.21 N m (1 6.2 1 kg-m, 12.15 ft-lbl
LC-11

COOLING SYSTEM -Thermostat-
inspection
1 Check for valve seating condition at ordinary
temperatures
It should seat tightly
2 Check valve opening temperature and rnaxl-
mum valve lift
I Standard
76 5 (170) Valve opening temperature
OC (OF)
I 10/90 (0 39/194) Maximum valve lift
mmIoC (dF)
SLC556
3 Then check if valve closes at 5°C (9°F) below
valve opening temperature
LC-12

COOLING SYSTEM -Radiator-
Disassembly and Assembly
Before removing radtator, remove front bumper assembly
Always replace with new gasket and O-ring
When filling radiator with coolant, refer to MA section
&em 3.4 10 3.0 4.2 2.2 9) .f' - Water outlet Reservoir tank
Mounting rubber
+Drain plug
Clamp @ 3- 5 IO 3- 0 5.22.3 6)
N rn lkg-m. ft Ibl
SLC557
LC-13

COOLING SYSTEM -Cooling Fan-
-Disassembly and Assembly
(91 6-10
7 (06 - 10.4 3- 7 21
i(916.10 106-1 0.43-72)
(91 N rn lkg-m, ft-lbl SLC558
Inspection
Check fan coupling for oil leakage or bent bimetal.
SLC072
LC-14

COOLING SYSTEM -Electric Cooling Fan for Turbocharger-
Disassembly and Assembly
7 AW condmoner condenser
Refer to HA section for electric circwt
Inspection
Check water temperature switch for proper opera-
tion
Operating temperature
OFF + ON 100°C (212°F)
I I
I
SLC559
LC-15

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Engine Lubri
Oil pressure check
Engine rpm Approximate discharge
Dresure kPa
Ikdcm’, DII)
600 78 (0 8,ll I
1,200 196 (2,281
2,000 294 (3,431
4.000 392 14.571
011 pump
SLC573
Unit mm Inn1
Height H, H*
Except turbo model 18 5 IO 7281
Turbo model 15 5 IO 6101 21 5 (0 846)
12 5 IO 4921
Unit mm lml
0 11 -0 20 IO 0043 -0 0079) Body to Outer gear
clearance @
inner gear to CreKent clearance @
Outer gear to crescent
clearance
@
Housing to mnergear
0 12 -0 23 10 0047 -0 00911
0 21 -0 32 (0 0083 -0 01261
005-009 100020-000351 Clearance 0
0 05 0 11 (0 0020 - 0 0043) Housing to outer gear
clearance
@
Oil pressure regulator valve
Valve spring free length xxxxx mm On1
Valve spring assembly length
Opening pressure
373.412
xxxxx mm/N lmm/kg, dlbl
kPa Ikglcrn’. Pril/rpm 13 8.4 2. 54 - 601/2,000 rpm
tion System
Tightening torque
Unlt Nm kg-m it-lb
011 Pumpsecuring bolt M6
M8
011 pump cover screw
Regulator
valve cap bolt
081 strainer bolt
M6
M8
011 pressure switch
Turbocharger
Oil inlet tube to
cylinder block
011 inlet tube to turbocharger
011 outlet pipe to
turbochar~er
6-7
12.16
4-5
39 -49
63-83
16-21
10
- 16
15-20
8 11
8-11
06-07
12-16
04-05
4-5
0 64 -0 85
16-2
1
10-16
15-20
08-1 1
08-1 1
43-51
9-12 29-36
29-36
46-61
12-15
7-12
11 14
58 80
58-80
LC-16

SERVICE DATA AND SPECIFICATIONS (S. D.S.)
Engine Cooling System
Radiator
Unit kPa lkg/cm'. psi1
Cap relief pressure
Leakase terr mesure
59 98106 10.9-141
157
I1 6.231 ~~ ~
Thermostat
Standard
76 5 I1701 Valve opentng temperature
Maximum
valve lift
"C I'FI
mmPC Id FI 10190 IO 39/194) ~ ~~~
~ ~
~
Fan coupling
Cut Off point rpm LOW 750
Hlgh Except turbo model 2.450
Turbo model 2.700
Low+ Hightemperature'C I'FI 60.70 1140.1581
Temperature switch (Turbocharged model)
Operatmg temperatwe
OFF - ON "C I'FI 100 (2121
Tightening torque
Unit Nm kgm ft-lb
Water pump securing bolt 16 -21 1621 12-15
Thermostat housing 16-21 16-21 12-15 securing bolt
Water inlet securing bolt
16. 21 16-21 12-15
Water outlet securing bolt 16.21 16-21 12-15
Coolant filler housing bolt 3 - 4 03-04 22-29
Radiator securing bolt 3 -4 03-04 22-29
Radiator hose clamp 3-5 03-05 22-36
Cooling fan securing bolt 6 - 10 06-10 43-72
Fan Coupling securing bolt 6 - 10 06-10 43-72
_- LC-1 f

SPECIAL SERVICE TOOLS
Tool number
(Kent-Moore
No ) Tool name
EG17650300 Radiator cap tester adapter
(-)
LC-18