1990 MAZDA 232 engine oil

B2 REMOVAL
REMOVAL
Warning
l Release the fuel pressure. (Refer to Section FZ.)
PROCEDURE
i. Disconnect the negative battery cable.
2. Drain the engine coolant and transaxle oil.
3. Remove in the order shown in the figure, referring to Removaf Note
Step 1
1. Strut tower bar
2. Undercovers and side covers
3. Air cleaner assembly
4.
Battery bracket
5. Battery cover
6. Battery
7. Battery carrier
8. Accelerator cable
9. Radiator hoses
10. Coolant reservoir hose
f I. Cooling fan connector
12. Radiator switch connector
13. Radiator bracket
14. Radiator and coofing fan assembly
15. Battery duct
16. Air pipe and air bypass valve
17. Intercooler and air pipe
Removat Note . . . . . . . . . . . . .._.. m _._._..., page 82-U
18. Air pipe and gasket
19. P/S and/or AK drive bett
20. P/S oil pump and bracket
Removal Note . . . . .._.__.....~..~........ page BZ-13
21. A/C compressor
Removal Note . . . . . .._................... page 82-I 3
22. Crossmember
02-12

REMOVAL B2
Removal note
intercooler and air pipe
I. Disconnect the hoses shown in the figure.
936032-718
2. Remove the nuts and the intercooler bracket shown in the
figure.
3. Loosen hose band @.
4. Remove bolt @and nut 0.
5. Remove the intercooler and air pipe downward.
RemovaI note
P/S oil pump
Caution
l Do not damage the hoses.
I _ Remove the P/S oil
pump with the hoses still connected.
2. Position the pump away from the engine and secure it with
wire.
93GO52-748
1 93GOB2~749
NC compressor
Caution
l Do not damage the hoses.
1. Remove the AC compressor with the hoses still connected.
2. Position the compressor away from the engine and secure
it with wire.
B2-13

B2 ENGINE STAND DISMOUNTING
93GOB2-7%
93AOB2-077
05WOBX-25
82-22 Water Bypass Pipe
1. Apply a small amount of engine coolant to the new O-ring.
2. install the O-ring on the pipe.
3. InstaIi the water bypass pipe.
A/C Compressor Bracket (if equipped)
1. Install the A/C compressor bracket.
Tightening torque
@: 19-25 N&m (1.9-2.6 m-kg, 14-19 ft-lb)
@: 37-52 Nom (3.8-5.3 m-kg, 27-38 ft-fb)
Exhaust Manifold and Turbocharger Assembly
I= Remove all foreign material from the exhaust manifold con-
tact surfaces.
2. Install a new gasket.
3. Instatl the exhaust manifold and turbocharger assembly.
Tightening torque:
38-46 N-m (3.9-4.7 m-kg, 28-34 ft-lb)
4. Connect the water hose to the water bypass pipe.
5. Connect the water hose and the oil pipe to the cylinder
block.
Tightening torque
@: 12-18 N-m (I -2-l .8 m-kg,
6. Connect the oil return hose to the oi 8.7-13 ft-lb)
I pan.
Exhaust Manifold Insulator
1. Install the exhaust manifold insulator.
Tightening torque:
7.8-I 1 Mm (80-I IO cm-kg, 69-95 in-lb)

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

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