1990 MAZDA 232 oil

lNSTAL&ATlON B2
03UOSX-839
93G032-76:
9313082-738
/
\ I
Crossmember
1. Install the crossmember.
Tightening torque:
93-107 Nm (9.5-l I .9 m-kg, 69-79 f&lb)
A/c compressor
1. Install the A/C compressor.
Tightening torque:
24-35 Nom (2.4-3.6 m-kg, 17-26 ft-lb)
P/S oil pump and bracket
I. Install the P/S oil pump and bracket.
Tightening torque:
37-52 Nm (3.8-5.3 m-kg, 27-38 ft-lb)
Drive belt
I. Install the P/S and/or A/C drive belt.
2. Adjust the drive belt deflections. (Refer to page 82-2)
Air pipe
1. Install a new gasket and install the air pipe.
Tightening torque:
19-25 N-m (1.9-2.6 m-kg, 14-19 Mb)
Intercooler and air pipe assembty
t . Lift the intercooler and air pipe assembly from the bottom
of the vehicle, and install hose @ in pipe @ .
2. Install and tighten the mounting bolt and nut.
Tightening torque:
7.8-l 1 Nom (80-l 10 cm-kg, 69-95 in-lb)
3. Tighten hose clamp 0.
B2-31

B2 INSTALLATION
93GOB2-74 1
93GOB2-743
82-32
4. Connect the air pipe to the throttle body, and tighten the
hose clamp.
5. Connect air hose @ to the wastegate diaphragm,
and se-
curely tighten the hose clamp.
6. Install nut @
Tightening torque:
19-25 Narn (1.9-2.6 m-kg, 14-19 ft-lb)
7. Install the intercooter bracket and tighten nuts @J .
Tightening torque:
7.8-l 1 Narn (80-I IO cm-kg, 69-95 in-lb)
Air pipe and air bypass valve assembly
1. Connect the air pipe to the turbocharger, and securely tight-
en the hose clamp.
2. Install and tighten the bolt @ .
Tightening torque:
7.8-l 1 Nom (80-I 10 cm-kg, 69-95 in-ib)
3. Connect air hose @and Q1 and securely tighten the hose
clamps.
Battery duct
1. install the battery duct.
Radiator and tooting fan assembly
1. Install the radiator and cooling fan assembly.
Tightening torque:
7.8-l 1 Nm (80-l 10 cm-kg, 69-95 Mb)
2. Connect the tooting fan connector.
3. Connect the radiator switch connector.
4. Connect the oil cooler hose.
5. Connect the coolant reservoir hose.
6. Connect the upper and lower radiator hoses.

82 INSTALLATION
Steps after installation
1. If the engine oil was drained, refill with the specified amount and type of engine oil.
2. Fill the radiator with the specified amount and type of engine coolant.
3. Fill the transaxie with the specified amount and type of transaxle oil. (Refer to page J3-36.)
4. Connect the negative battery cable.
5. Start the engine and check the following:
(I) Engine oiI, transaxle oil, and engine coolant for leakage
(2) Ignition timing and idle speed
(3) Operation of emission control system
6. Perform a road test.
7. Recheck the engine oil and engine coolant levels.
93G032-747
-
BZ-34

D OUTLINE
OUTLINE
BUTLINE OF CONSTRUCTION
The
lubrication system of the 323 4WD engine is the same as for the 2WD model.
The Bf DOHC turbocharged engine oil circulation path is different than that of the BP DOtiC non-turbocharged
engine
because of the turbocharger lubrication.
LlJBRICATtON ClRCUlT 93GODX-702
o-2 93GODX.70:

RADIATOR AND COOLING FAN
The radiator and cooling fan specifications are revised.
Specifications
r
EnginelTransaxle BP SOHC 1 BP DOHC Turbo
ATX I
Item MTX MTX 1 Radiator I
Width 647 +
+
Core size
mm (in) H etght 390 t *-
Depth 16 25 e
Fm pnch
mm (in) 1.3 t c
Heat dissipaton capacity kcallh
38,800 43,800 C
Type -
Double tube - Transaxle oil cooler
Heat dissipation capacity
-
kcal/h I 1,650 -
Cooling fan
Number of biades
4 5 +
Outer drameter
mm (in> 320
340 C
Capacity
w-v 80-12 160-12 c
Current
A
1 I 6.6 * 1 Hi : 13.3 + 7 0% max. + Lo: 8.8 + 10% max.
93GOEX-708
OIL COOLER (ATX
;ECTION A-A
4WD MODEL ZWD MODEL
I
DEPTH E-7

E RADIATOR THERMUSWlTCki
RADIATOR THERMOSWITCH (BP DUHC TURBO)
REMOVAL I INSPECTION I INSTALLATION
I. Disconnect the negative battery cable.
2. Remove in the order shown in the figure.
3. Install in the reverse order of removal, referring to InstaHation Note.
7.8-13 H-m
(80-l 10 cm-kg, 69-95 h-lb)
(80-110 cm-kg,
69-95In4b)
REPLACE 1. Resonance chamber
2. Radiator cowling mounting bolts
3. Radiator thermoswitch connector
03WEX-027 4. Radiator thermoswitch
Inspection . . . . . . . . * . . . . . . . . . . . . . ..-. -.*,.a..- . . . . . . .I. below
Installation Note _.,............................._. below
1NSPECTlON 1. Place the switch and a thermometer in engine oil.
Warning
l Do not heat the engine oil above 12O*C (248OF) 2. Heat the engine oil gradually and check continuity of the
switch with
an ohmmeter.
Engine oil temperature “C (*F) Continuity
More than 105 (221) Yes I
t Less than 96 (205) No
1
3. If not as specified, replace the radiator thermoswitch.
Installation Note
Radiator thermoswitch
Caution
l Do not use an impact wrench for installation. 1. Install the radiator thermoswitch along with a new gasket.
Tightening torque: 5.9-12
Nom (60-120 cm-kg, 52-104 in-lb) 93GOEX.721 E-12

Fl FUEL SYSTEM
Transfer Pump Csntrol
OutIine
The fuel tank is built with separate right and left sections to accommodate the installation of the propeller
shaft. As fuel is pulled from the right side of the tank, the transfer pump pumps the fuel from the left to the
riuhf (fuel pump) side to balance the fuel level.
FUEL IN 1EFT TANK
4x4 CONTROL UNIT
(FUEL PUMP CONTROL
UNIT)
TRANSFER / TRANSFER PUMP
PUMP SWITCH: OFF
NO FUEL IN LEFT TANK
4x4 CONTROL UNIT
(FUEL PUMP CONTROL
UNIT) / TRAtdFER PUMP
TRANSFER PUMP SWITCH: ON
Fuel in left tank
The transfer pump switch is OFF, and the transistor within the fuel pump control unit is ON.
As a result, current flows to the coil, the switch is switched ON, and the transfer pump is activated.
No fuel in left tank
The transfer pump switch is ON, and the transistor within the fuel pump control unit is OFF.
As a result, the current to the coil is interrupted, the switch
is switched OFF, and the transfer pump is stopped.
When in this condition, if the vehicle were driven on a rough road surface, the fuel level would vary up and
down and fuel pump would switch ON and OFF.
The transfer pump would then operate excessively, shortening the pump life. In order to prevent this, a ten-
second delay circuit is provided within the fuel pump control unit.
Fl-8

TROUBLESHUOT1NG GUIDE F2
;TEP
14
15
16 Change fuel and check if condjtjon improves INSPECTION
Check if resistance of rgnrtm
coil IS OK’
Resistance (at 20°C [SS*Fj):
Primary coil winding _....-.. Cl.81 -0.99Q
Secondary coil winding.,.. IO-16 kQ ACTION
Yes Go to next step
PRIMARY COIL
WINDING SECONDARY COIL
WIND tNG
Check fur correct engine compressron”
Yes Go to next step
Engine compression:
785 kPa (8.0 kg/cm2, 1 I4 psi)-300’ rpm L 1
No Check engine condition *
l Worn p&ton, piston rings or cylinder
wall
l Defective cylinder head gasket l Distorted cylinder head l Improper valve seating
l Valve sticking in guide
Yes Change fuel to another brand
No
I I Try known good ECU and check if con-
dition imDroves
* Refer to 323 Workshop Manual [ 1203-lo-89F (Europe) or 1204-l O-89F (Australia)l.
93GOF2-74 6
F2-35