MAZDA 232 1990 Suplement Repair Manual

B2 OUTLINE
PISTON
BP TURBO
V
, J
I BP NON-TURBO
Because of the addition of the turbocharger, the piston crown recess is increased to lower the compression ratio.
B2-8

,
OUTLfNE 82
BP NON-TURBO
The flywheel is shaped differently to accommodate the redesigned clutch disc and clutch cuver.
82-9

82 OUTLINE
CAMSHAFT
IDENTlFlCA~lON MARK
/
EXHAUST
IDENTlFlCATlON MARK
INTAKE
IN
EX BP TURBO
BP26
8P26 BP NON-TURBO
BP05
BP06
TDC
EXHAUST OPEN
The camshaft valve timing specifications are different to improve engine power.

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

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 REMOVAL
Step 2
1. Disconnect the harness connectors shown in the fiuure.
ALTERNATOR OIL PRESSURE SWITCH
\. PRESSURE REGULATOR
STARTER
CObjTROL VAVLE
E-SPEED CONTROL
CTOR
KNOCK SENSOR
SWITCH
03 w 08X-80’
Step 3
I. Disconnect the hoses shown in the figure.
-
------a-
93GOB2-720
82-14

REMOVAL B2
_. OWOBX-07I
03UOBX-845
SteD 4 Removal note
Fuel hose
Warning
l Keep sparks and open flame away from the fue!
area.
Caution
l Cover the hose with a rag because fuel will spray
out when disconnecting.
l Plug the disconnected hoses to avoid fuel leakage-
1. Disconnect the fuel hoses.
Heater hose
Caution
l Do not lose the heater hose joint O-rings and spacer
when removed.
1. Depress the heater hose retainer and remove the heater
hose.
GASKET, REP
OTTER PIN, REPU\CE
91Gr-P7-771 J
-.,-1w- IL .
1. Speedometer cable 6. Driveshafts
2. Select and shift cables Removal Note ._.....*., * . . ..- *...- I..... page BZ-16
3. Front exhaust pipe 7. Propeiler shaft
4. Stabilizer Removal Note . . . . . . . _ . , . . . _. . . . . . . . . _. . . . . page L- 5
5. Tie-rod end
Removal Note . . . . . . . . . . . . . . . . . . . . . . . .._. page BZ-16
B2-15

B2 REMOVAL
93ECB2-025
c
Removal note
Tie-rod end
1. Remove the cotier pin and loosen the nut until it is flush with
the end of the ball joint stud.
Caution
l Do not reuse the cotter pin.
2. Separate the ball joint from the knuckle arm with the SST.
Driveshaft
1. Remove the joint shaft.
2. Remove the lower arm bali joint clinch bolt.
Caution
l Do not damage the ball joint dust boot.
3. Pry the lower arm downward to separate it from the knuckle.
Caution
l Do not damage the oil seat.
1
03tiOBX-81:
Bz-t6
4. Separate the driveshafi from the Vansaxle.

REMOVAL B2
Step 5
1. Engine mount member 5, No.3 engine mount
rubber
Removal Note . . . . . . .._.._...._....-.__._.._-_..-.* below 6. No.4 engine mount rubber and bracket
2. No.2 engine mount rubber and bracket 7. Alternator and drive belt
3. Clutch release cylinder 8. I ntercooler brat kets
Removal Note _._...._.._.._.....,,....__ page B2-18 9. Engine and transaxle assembly
4. Dynamic damper Removal Note . .._.................--.-..
page 62-f 8
Removal note
Engine mount member
1. Suspend the engine with a chain hoist.