1990 MAZDA 232 battery

D
D
SUPPLEMENTAL SERVICE iNFORMATION, COMPRESSION 82
SUPPLEMENTAL SERVICE INFORMATION
The following points in this section are changed in comparison with Workshop Manual [Europe (7 203~IO-899,
Australia (I 204-1 U-89F) 1.
Compression
l Inspection
Engine
l Removal
l Engine stand mounting
l Engine stand dismounting
l Ins:attaIion 93GQ32-77 I
COMPRESStON
If the engine exhibits low power, poor fuel economy, or poor idle, check the following:
1. Ignition system (Refer to Section G.)
2. Compression
3. Fuel system (Refer to Section F3.)
93G032-774 93GO32-712
1NSPECTION
1. Verify that the battery is fully charged. Recharge it if
necessary.
2. Warm up the engine to normal operating temperature.
3. Turn the engine OFF.
4. Remove all of the spark plugs.
5. Disconnect the ignition coil connector.
6. Connect a compression gauge to the No.7 spark plug hole.
7. Fully depress the accelerator pedal and crank the engine.
8. Record the maximum gauge reading.
9. Check each cylinder in the same manner.
Compression:
1,059 kPa (IO.8 kg/cm2, 154 psi)-300 rpm
Minimum:
785 kPa (8-O kg/cm2, 114 psi)-300 t-pm
Allowable difference between cylinders:
196 kPa (2.0 kglcm2, 28 psi) max.
IO. If the compression in one or more cylinders is low, pour a
small amount of engine oil into the cylinder and recheck
the compression.
(1) If the compression increases, the piston, piston rings,
or cylinder waII may be worn.
(2) If the compression stays tow, the valve may be stuck
or seating improperly.
(3) If the compression in adjacent cylinders stays low, the
cylinder head gasket may be defective or the cylinder
head distorted.
1 I. Connect the ignition coit connector.
12. Apply antiseize compound or molybdenum-based lubricant
to the spark plug threads.
73. Install the spark plugs.
Tightening torque:
15-23 N-m (1.5-2.3 m-kg, If-17 ft-Ib)
82-11

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

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.

INSTALLATION
93G082-7ti
HERE
/+Ju 7
93GOB2-74!
Caution
l Position the hose clamp in the original location on
the hose, and squeeze it lightly with large pliers to
ensure a good fit.
Accelerator cable
1. Install the accelerator
cable.
Tightening torque
@): 7.8-l 1 N4m (80-l 10 cm-kg, 69-95 in-lb)
2. Adjust the cable deflection by turning nuts @ .
Deflection: I-3mm (U&4--0.12 in)
Battery carrier and battery
1 . Install the battery carrier.
Tightening torque:
7.8-l 1 N4m (80-I IO cm-kg, 69-95 in-lb)
2. Install the battery and the battery cover.
3. Install the battery bracket.
Tightening torque:
2.9-5.9 N.m (30-60 cm-kg, 26-52 in-lb)
4. Connect the positive battery cable.
Air cleaner assembly
1. Install the air cleaner assembly.
Tightening torque:
19-25 N-m (1.9-2.6 m-kg, 14-19 ft-lb)
2. Connect the airflow sensor connector.
3. Connect the hoses shown in the figure.
Strut tower bar
I. Instail the strut tower bar.
Tightening torque:
88-108 Narn (9.0-11 .U m-kg, 65-80 ft-lb)
Undercover and side cover
1. Install the undercovers and side covers.
93GOB2-746
82-33

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

FAN MOTOR, WATER THERMOSWITCH E
93GOEX-71:
93GOEX-714
93GOEX-720
tNSPECTlON
Single-speed Type (For BP SOW MTX)
I. Verify
that the battery is fully charged.
2. Disconnect the fan motor connector.
3. Connect the battery and an ammeter to the fan motor
con-
nector.
4. Verify that current is as specified.
Current (A): 6.6 k 1
5. If current is not within specification and/or the fan does not
turn smoothly, replace the fan motor.
Two-speed Type (Except BP SUHC MTX)
I. Verify that the battery is fully charged.
2. Disconnect the fan motor connector.
3. Connect the battery and an ammeter to the fan motor con-
nectors for low-speed inspection.
4. Verify that the fan motor operates smoothly at the standard
cu vent.
Current (A): 8.8 + 10% max.
5. Connect the battery, an ammeter, and switch to the fan mo-
tor connectors for high-speed inspection.
6. Verify that the fan motor operates smoothly
at the standard
current or less with the switch ON.
Current (A): 13.3 + 10% max.
7. If not as specified, replace the fan motor.
WATER THERMOSWITCH
(BP DOHC TURBO)
INSPECTlUN
I . Place the switch and a thermometer in water.
2. Heat the water gradually and check continuity of the switch
with an ohmmeter.
Coolant temperature OC (OF) 1 Contrdy
I
More than 97 (207) Yes
Less than 90 (194)
NO
3. If not as specified, replace the water thermoswitch.
93GOEX.715

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

FAN RELAY E
FAN RELAY(BP DOHCTURBO)
REMOVAL / INSPECTION
1. Disconnect the negative battery cable.
2. Remove the fan relay.
No.2 FAN REUY
w. . . . . . .TYPE 1
@AND @ . . . TYPE 2
INSPECTDN
f . Check continuity as shown with an ohmmeter.
I
Terminal COMlLJlty
A-C No
B-D
Yes 2. Apply 12V between terminals B and D.
Check for continuity between terminals A and C.
3. If not as specified, replace the fan relay.
E-13