wheel MAZDA 232 1990 Suplement Owner's Manual

H OUTLINE
OUTLINE
OUTLINE OF CONSTRUCTION
A hydraulic clutch control mechanism is used.
The basic construction is the same as that of 323 2WD model, but there is no interchangeability of parts
except for the release cylinder.
1. An assist/return spring is used on the BP DOHC Turbo model to reduce the required clutch pedal effort..
2. The hydraulic clutch master cylinder for the 8P DOl-lC Turbo model has a built-in check valve.
3. To improve clutch operation feeling and increased parts life, a friction plate and needle roller bearings
are used between the release fork and the release bearing.
93GOHX-704
SPECIFICATIONS
Hem
Clutch control Engine/Transaxle
BP SUHC BP DOHC Turbo
GSMX-R
Hydrautic
Clutch cover
Type
Set load
N (kg, lb) Diaphragm spring
3,846 (392, 862) 5,494 (560, I ,232)
Outer diameter 1
mm (in) 225 (8.858) 230 (9.055)
I 1 nner diameter mm (in)
I 150 (5.906)
I 155 (6.102) I
CI utch disc
Pressure plate side
mm {in) 4.1 (0.161) 3.2 (0.126)
Thickness f
Flywheel side
mm (in) 3.5 (0.138) 3.2 (0. f 26)
I Type I Suspended
I
Clutch pedal LHD 6.55 Pedal
ratio
RHD 6.7
Full stroke mm (in)
I 135 (5.32)
I
Height (With carpet) mm [in)
I I 96-204 (7.72-8.03)
I
Master cylinder Inner diameter
mm {in)
I 15.87 (0.625)
Release cylinder inner diameter
mm (in)
I - 19.05 (0.750)
I
Clutch fluid SAE J1703 or FMVSSI 16 DOT-3
93GOHX-705
H-4

SUPPLEMENTAL SERVICE INFORMATION, TROU8LESHOOTlNG GUIDE H
SUPPLEMENTALSERVICE INFORMATION
The following points in this section are changed in comparison with 323 Workshop Manual (1206IO-89F).
Troubleshooting guide
Clutch fluid (with ABS)
l Replacement
Clutch pedal (BP DOHC Turbo) Clutch release cylinder (with ABS) l Air bleeding
Clutch unit
l Removal I Inspection I installation
Clutch master cylinder
(BP DOW Turbo or with ABS) l Removal I Inspection I installation
93GOHX-710
l Removal I Inspection I Installation (BP DUHC Turbo)
l Air bleeding (with ABS)
l Overhaul (BP DUHC Turbo)
TROUBLESHOOTING GUlDE
Problem
Possibte Cause Remedy Page
Slipping
Clutch disc facing worn excessively
Replace U-l 9
Clutch disc facing surface hardened or oifed
Repair or replace H-l 9
Pressure plate damaged Replace H-19
Diaphragm spring damaged or weakened
Replace H-l 9
Insufficient clutch pedal piay
Adjust H-12
Clutch pedal sticking
Repair or replace U-11
Flywheel damaged
Repair or replace H-19
Faulty
Excessive runout or damaged clutch disc
Replace H-19
disengagement
Clutch disc spiines rusted or worn ’
Remove rust or replace H-l 9
Clutch disc facing oiled
Repair or replace H-19
Diaphragm spring weakened
Reptace H-19
Excessive clutch pedal ptay
Adjust -
Insufficient clutch fluid
Add fluid H-10
Leakage of clutch fluid
Locate and repair or -
replace
Clutch vibrates
Clutch disc facing oiled
Repair or replace H-l 9
when accelerating
Torsion rubbers weakened
u-19 Clutch disc facing hardened or damaged Replace
Repair or replace H-19
Clutch disc facing rivets loose
Replace H-l 9
Pressure plate damaged or excessive runout
Replace H-l 9
Flywheel surface hardened or damaged
Repair or replace H-19
Loose or worn engine mount
Tighten or replace -
Clutch pedal
sticking Pedal shaft not properly lubricated
Lubricate or replace H-l 1
Asistireturn spring damaged or poor adjust
Replace or adjust H-11, 12
Abnormal noise
Clutch release bearing damaged
Replace N-1 9
Poor iubrication of release bearing sleeve
Torsion rubbers weakened Lubricate or replace H-19
Replace u-t9 Excessive crankshaft
end play
Repalr -
Pilot bearing worn or damaged
Replace H-79
Worn pivot points of reiease fork
Repair or replace H-19

H CLUTCH FLUID (WITH ABS)
CLUTCH FLUID (WITH ABS)
PREPARATION
SST
49 0259 770B
For
Wrench, flare nut
m air
bleeding
1
93GOHX-714 93GOHX-712
REPLACEMENT
Note
l A common reservoir is used for the clutch and brake
system fluids.
l The fIuid in the reservoir must be maintained at 314
tevet or higher during replacement.
Caution
l Be careful not to spill the fluid on a painted surface.
If this should happen, wash it off immediately.
l Do not mix different brands of fluid.
l Do not reuse the clutch fluid that was drained.
1. Drain the brake fluid from the master cylinder by pumping
it through a wheel cylinder bleed screw.
2. Remove the bleeder cap from the clutch release cylinder
and attach a vinyl hose to the bleeder plug.
93GOHX-77 3
3. Place the other end of the vinyl hose in a clear container.
4. Fill the reservoir with new fluid to the MAX mark.
5. Slowly pump the clutch pedal several times.
6. With the clutch pedal depressed, loosen the bleeder screw
with the SST to let the fluid escape. Close the bleeder screw
with the SST.
7. Repeat Steps 4 and 5 until only clean fluid is seen.
8. Tighten the bleeder screw.
Tightening torque:
5.9-8.8 Nom (60-90 cm-kg, 52-78 in-lb)
9. Add fluid to the MAX mark.
IO. Slowly pump the clutch pedal several times.
Verify that there is no fluid leakage.
11.
Check operation of the clutch system.
12. Bleed and check operation of the brake system.
(Refer to Section PJ

H CLUTCH UNIT
PREPARATION
SST
49 E301 060
Brake, ring gear
For removal and
i nstaI\abon of
c!utch cover and
flywl-leel
49 E301 062
Collar
(Part
of 49 E301 060) For
removal and
installation of
cIutch cover and
flywheel
49 1285 071 For
I removal of blot
Puller, bearing
Lj , - e bearing
49 0823 U72A 1 For
I installation of pilot 49 E3OI 061
Body
(Part
of 49 E301 060)
49 SE01 310
Centering tool,
clutch disc
49 1285 073
Chuck
(Part of
49 1285 071)
Installer 1 eccentric
shaft bearing @@D bearing -
For
removal and
installation of
dutch cover and
flywheel
For
support and
alrgnment of
clutch disc 7
For
removal of pilot
bearing
93GOHX-726
H-18

t .-
1
CLUTCH UNIT H
REMOVAL I fNSTALLATION
l Remove the clutch release cylinder with the clutch pipe connected.
- Do not remove the pilot bearing if not necessary.
f . Remove in the order shown in the figure, referring to Removal Note.
2. Instal! in the reverse order of removal, referring to Installation Note.
-761 BP SOHC
,E+--l BP DOHC TURBO
-; (MORI Wl-llTE TA No.2 OR
B EQUIVALENT ORGANIC
MOLYBDENUM GREASE)
1. Clutch release cylinder
2. Transaxle
Service ~......-...tl.*I.*-......*,,.**..l....... Section J3
3. Bout
4. Release bearing
5. Clutch release fork
6. Clutch cover
Removal Note _....._._._.-..._....___.._. page H-20
lnstaflation Note .._.......-..._.. . .._..._. page H-21 7. Clutch disc
Removal Note . . . . . . . .._...
Installation Note.. . . . . . . . . .
8. Pilot bearing
Removal Note . . . . . . . . . .._.
1 nstatlation Note.. . . . . __ . _.
9. Flywheel
Removal Note . . . . . . . . . . . . .
Installation Note . . . . . . . . . . . *..*.
w....
*.*..
-....
. . . . .
. . . . ..*.a.*.
page H-20
.,..I.._ page H-21
.**-. ..- page H-20
.,..... -
page H-21
. ..*.-.- page H-20
_...a-.. page H-20
H-19

C1UTCf-f UNtT
9MUOHX-032
I
03UOf-lX-028
I
93GOHX-729
I
i
Removal Note
Clutch cover and disc
1. Install the SST.
2. Loosen each bolt one turn at a time in a crisscross pattern
until spring tension is released. Then remove the ciutch cov-
er and disc.
Pilot bearing
1. Remove the pilot bearing with the
SST if necessary.
Flywheel
Note
l After removing the flywheel, inspect for oil leakage
past the crankshaft rear oil seal.
If necessary, replace the oil seal.
1. Hold the flywheel with the SST.
2. Remove the flywheel.
Instalfation Note
Flywheel
1 -Wipe the bolts clean and apply sealant to the bolt threads.
2. Install the flywheel and SST.
3. Tighten the bolts evenly and gradually in the pattern shown.
Tightening torque:
96403 Nmm (9.8-10.5 m-kg, 71-76 ft.lb)
PiIot bearing
Note
l Install the pilot bearing ftush with the flywheeL
I_ Install the new bearing with the SST.
03UOHX-030
H-20

CLUTCW UNIT
Clutch disc
1. Clean the clutch disc splines and main drive gear spIines;
then apply organic molybdenum grease.
2. Hold
the clutch disc in position with the SST.
Clutch cover
1. Install the SST.
2. Align the
dowel holes with the flywheel dowels.
3. Tighten the
botts evenly and gradually in the pattern shown.
Tightening torque:
18-26 N-m (1.8-2.7 m-kg, 13-20 ft-lb)
EWOHX-040
Ii-21

J3 OUTLtNE
OUTLINE OF CONSTRUCTION
l Full-time 4-wheel drive, incorporating a viscous coupling is used on the BP DUHC Turbo model. BP SUHC
engine equipped models are fitted with an electronically controlled, lockable center differential.
With this system all driving conditions are easily contended with; from good roads to bad roads and
ad-
verse weather conditions.
l The transaxle and transfer unit were developed based on the GSM-R type transaxle.
The transaxle, center differential, viscous coupling, and front differentia! are a single, compact unit.
l The center differential employs a planetary carrier. system and a viscous coupling, and functions to distrib-
ute the driving force to the front and rear differentials as needed.
Through the use of this center differential, tire scuffing common to 4-wheel drive vehicles during tight cor-
nering, is eliminated.
l The speedometer driven gear (for detection of vehicle speed) is installed in the transfer carrier and detects
the speed of the rear wheels.
l Lubrication oil of the transaxle and transfer unit and of the carrier is contained separately.
93GOJ3-704
J3-4